Material Testing Machine

Abstract

To allow a testing condition to be branched into a plurality of testing conditions halfway through testing.SOLUTION: A tensile testing machine 1 comprises: a testing machine body 2 having at least one of detectors (14, 15, 19); and a control unit 51. The control unit 51 includes: a first branch setting unit 502 for setting a first branch condition CB1, at a first branch point BR1 where a testing condition CT is branched into two or more testing conditions CT, in association with detection results of the detector; a first condition setting unit 501 for setting a first testing condition CT1 that is a testing condition CT before the first branch point BR1; and a second condition setting unit 503 for setting a second testing condition CT2 that is a testing condition CT after the first branch point BR1.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a material testing machine. [Background technology]

[0002] Various techniques are known for setting test conditions in material testing machines. For example, the control device of a materials testing machine described in Patent Document 1 is a control device for a materials testing machine that performs materials testing by applying a test force to a test piece using a loading mechanism, and is equipped with a control unit that executes speed control that controls the loading mechanism that applies the test force to the test piece so that the speed indicating the amount of change per unit time in the displacement of the test piece matches a target speed value, and position control that controls the loading mechanism so that the displacement amount matches a target displacement amount value, and the control unit switches from speed control to position control when certain conditions are met. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2020-169836 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the conventional material testing machine described in Patent Document 1, etc., it was difficult to branch the test conditions into a plurality of test conditions during the test. In other words, it was difficult to set the test conditions so that the test conditions branch into a plurality of test conditions during the test.

[0005] The present invention has been made in consideration of the above circumstances, and has an object to provide a materials testing machine that makes it possible to set test conditions so that the test conditions branch off into a plurality of test conditions during the test. [Means for solving the problem]

[0006] A material testing machine according to an embodiment of the present invention comprises a testing machine main body having at least one detector, and a control unit, and the control unit comprises a branch setting unit that sets branch conditions at a branch point where test conditions branch into two or more test conditions in correspondence with the detection result of the detector, a first condition setting unit that sets first test conditions which are test conditions before the branch point, and a second condition setting unit that sets second test conditions which are test conditions after the branch point. Effect of the Invention

[0007] According to the material testing machine of the present invention, the test conditions can be set so that the test conditions branch off into a plurality of test conditions during the test. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a diagram showing an example of the configuration of a tensile testing machine according to an embodiment of the present invention. [Diagram 2] FIG. 2 is a diagram illustrating an example of a configuration of a control device according to the present embodiment. [Diagram 3] FIG. 11 is a screen diagram showing an example of a first test condition display screen that displays the first test condition. [Figure 4] FIG. 11 is a screen diagram showing an example of a first branching condition display screen that displays a first branching condition. [Diagram 5] FIG. 11 is a screen diagram showing an example of a second test condition display screen that displays second test conditions. [Figure 6] FIG. 11 is a screen diagram showing another example of the second test condition display screen that displays the second test conditions. [Figure 7] FIG. 13 is a screen diagram showing an example of a second branching condition display screen that displays a second branching condition. [Figure 8] FIG. 13 is a screen diagram showing an example of a third test condition display screen that displays a third test condition. [Figure 9] FIG. 13 is a screen diagram showing another example of the third test condition display screen that displays the third test condition. [Figure 10] 6 is a flowchart showing an example of a test condition setting process of a control unit according to the embodiment; [Figure 11]10 is a flowchart showing an example of a test condition display process of a control unit according to the embodiment. [Figure 12] 6 is a flowchart showing an example of a test execution process of a control unit according to the embodiment; DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] Hereinafter, the present embodiment will be described with reference to the drawings.

[0010] [1. Configuration of tensile testing machine] FIG. 1 is a diagram showing an example of the configuration of a tensile tester 1 according to the present embodiment. The tensile tester 1 of this embodiment applies a test force FP to a test piece TP to perform a tensile test to measure mechanical properties such as the tensile strength, yield point, elongation, reduction of area, etc. of a sample. The test force FP is a tensile force. The tensile tester 1 includes a tester body 2 that applies a test force FP to a test piece TP, which is a material to be tested, to perform a tensile test, and a control unit 3 that controls the tensile test operation performed by the tester body 2. The tensile tester 1 corresponds to an example of a "material testing machine".

[0011] As shown in FIG. 1, the testing machine body 2 is configured by forming a load frame on a base 26 with a pair of support columns 28, 29 and a yoke 13, and by fixing a crosshead 10 to the support columns 28, 29.

[0012] A hydraulic actuator 18 is disposed on the base 26, and a lower grip 22 for gripping the lower end of the test piece TP is attached to a piston rod 181 of the hydraulic actuator 18. In addition, an upper grip 21 for gripping the upper end of the test piece TP is attached to the crosshead 10 via a load cell 14.

[0013] The hydraulic actuator 18 extends and retracts a piston rod 181 by controlling the direction and amount of pressure oil by a servo valve 20. As a result, the distance between the upper grip 21 and the lower grip 22 extends and retracts, and a test force FP is applied to a test piece TP fixed between the upper grip 21 and the lower grip 22. The stroke of the hydraulic actuator 18, i.e., the displacement X of the test piece TP, is detected by a differential transformer 19 attached to the hydraulic actuator 18.

[0014] The load cell 14 is a sensor that measures a test force FP, which is a tensile load applied to the test piece TP, and outputs a test force measurement signal SG1 to the control unit 3. The differential transformer 19 is a sensor that measures the displacement X of the test piece TP and outputs a displacement measurement signal SG2 corresponding to the displacement X to the control unit 3. The load cell 14 corresponds to an example of a "detector." The differential transformer 19 corresponds to an example of a "detector."

[0015] A displacement sensor 15 is disposed on the test piece TP. For example, a dumbbell-shaped test piece formed with a constriction in the center is used as the test piece TP. The displacement sensor 15 is a sensor that measures an elongation measurement value ED by measuring the distance between a pair of reference points on the test piece TP, and outputs an elongation measurement signal SG3 to the control unit 3. The pair of reference points are disposed above and below the constriction area of ​​the test piece TP. The displacement sensor 15 corresponds to an example of a "detector."

[0016] The control unit 3 includes a signal input / output device 40 and a control device 50. The signal input / output device 40 constitutes an input / output interface circuit for transmitting and receiving signals between the testing machine main body 2, and in this embodiment has a first sensor amplifier 42, a second sensor amplifier 45, a third sensor amplifier 43, and a servo amplifier 44. The first sensor amplifier 42 is an amplifier that amplifies the test force measurement signal SG1 output by the load cell 14 to generate a test force measurement value FD, and outputs the test force measurement value FD to the control device 50. The second sensor amplifier 45 is an amplifier that amplifies the extension measurement signal SG3 output by the displacement sensor 15 to generate an extension measurement value ED, and outputs the extension measurement value ED to the control device 50. The third sensor amplifier 43 amplifies the displacement measurement signal SG2 output by the differential transformer 19, and outputs a displacement measurement signal A3 indicating the displacement measurement value XD to the control device 50 as a digital signal. The servo amplifier 44 is a device that controls the servo valve 20 under the control of the control device 50. The control device 50 calculates a command value dX of the displacement measurement value XD, and transmits a command signal A4 indicating the command value dX to the servo valve 20.

[0017] [2. Control device configuration] Based on an operation by a user, the control device 50 controls the operation of the testing machine main body 2. Furthermore, the control device 50 causes the testing machine main body 2 to execute a tensile test. In this embodiment, the “user” includes an operator who operates the testing machine main body 2 .

[0018] FIG. 2 is a diagram showing an example of the configuration of the control device 50 according to the present embodiment. The control device 50 includes a control unit 51 , an operation unit 52 , and a display unit 53 .

[0019] The operation unit 52 includes, for example, a keyboard, a mouse, and the like, and receives operations from a user and outputs an operation signal corresponding to the operation to the control unit 51. The display unit 53 includes an LCD (Liquid Crystal Display) 531 and displays various images on the LCD 531 according to instructions from the control unit 51 . The LCD 531 corresponds to an example of a "display."

[0020] The control unit 51 is configured by, for example, a personal computer, and controls the operation of the control device 50. The control unit 51 includes a processor 51A and a memory 51B. The processor 51A is composed of a CPU (Central Processing Unit), an MPU (Micro-Processing Unit), and the like. The memory 51B is configured with a read only memory (ROM), a random access memory (RAM), etc. The memory 51B may also include a hard disk drive (HDD) or a solid state drive (SSD). The memory 51B stores a control program.

[0021] The control unit 51 may also include programmed hardware such as a digital signal processor (DSP) or a field programmable gate array (FPGA). The control unit 51 may also include a system-on-a-chip (SoC)-FPGA.

[0022] As shown in FIG. 2, the control unit 51 includes a first condition setting unit 501, a first branch setting unit 502, a second condition setting unit 503, a second branch setting unit 504, a third condition setting unit 505, a first condition display unit 511, a first branch condition display unit 512, a second condition display unit 513, a second branch condition display unit 514, a third condition display unit 515, and a test execution unit 516.

[0023] Specifically, processor 51A of control unit 51 executes a control program stored in memory 51B to function as a first condition setting unit 501, a first branch setting unit 502, a second condition setting unit 503, a second branch setting unit 504, a third condition setting unit 505, a first condition display unit 511, a first branch condition display unit 512, a second condition display unit 513, a second branch condition display unit 514, a third condition display unit 515, and a test execution unit 516. The first branch setting section 502 corresponds to an example of a "branch setting section." The first branching condition display section 512 corresponds to an example of a "branching condition display section."

[0024] The first condition setting unit 501 sets first test conditions CT1, which are test conditions before the first branch point BR1, based on a user's operation on the operation unit 52. The first test conditions CT1 are composed of a plurality of steps ST. Each of the plurality of steps ST includes operating conditions CM that define the operation to be executed by the testing machine main body 2, and switching conditions CS that switch the operating conditions CM to operating conditions CM of the next step ST. Step ST will be further explained with reference to FIGS. The first test condition CT1 will be further explained with reference to FIG.

[0025] Moreover, the operating condition CM includes at least one of a test force target value FT, a test force speed target value FVT, a displacement target value XT, and a displacement speed target value XVT. The test force target value FT is a target value of the test force FP. The test force speed target value FVT is a target value of the speed at which the test force FP changes. The displacement target value XT is a target value of the displacement X of the test piece TP. The displacement speed target value XVT is a target value of the speed at which the displacement X of the test piece TP changes. The switching condition CS includes at least one of a test force target value FT, a displacement target value XT, and an operation time TM. The operating condition CM and the switching condition CS will be further explained with reference to FIGS.

[0026] The first branch setting unit 502 sets a first branch condition CB1 at a first branch point BR1 where the first test condition CT1 branches into two or more second test conditions CT2, based on a user's operation on the operation unit 52. Moreover, the first branch setting section 502 sets the first branch condition CB1 in association with at least one of the detection result of the load cell 14, the detection result of the displacement sensor 15, and the detection result of the differential transformer 19. The detection result of the load cell 14 corresponds to a test force measurement value FD. The detection result of the displacement sensor 15 corresponds to an extension measurement value ED. The detection result of the differential transformer 19 corresponds to a displacement measurement value XD. The first branch point BR1 corresponds to an example of a "branch point", and the first branch condition CB1 corresponds to an example of a "branch condition". The first branch condition CB1 will be further explained with reference to FIG.

[0027] The second condition setting unit 503 sets second test conditions CT2, which are test conditions after the first branch point BR1, based on a user's operation on the operation unit 52. The second test conditions CT2 include at least two test conditions CT. For example, the second test conditions CT2 include a second A test condition CT2A and a second B test condition CT2B.

[0028] Each of the second-A test conditions CT2A and the second-B test conditions CT2B includes at least one step ST. Each step ST includes operating conditions CM that define the operation to be executed by the testing machine main body 2, and switching conditions CS that switch the operating conditions CM to operating conditions CM of the next step ST. The second A test condition CT2A will be further explained with reference to FIG. The second test condition CT2B will be further described with reference to FIG.

[0029] The second branch setting unit 504 sets a second branch condition CB2 at a second branch point BR2 where the second test condition CT2 branches into two or more third test conditions CT3, based on a user's operation on the operation unit 52. Further, the second branch setting section 504 sets the second branch condition CB2 in association with at least one of the detection result of the load cell 14, the detection result of the displacement sensor 15, and the detection result of the differential transformer 19. The second branch condition CB2 will be further explained with reference to FIG.

[0030] The third condition setting unit 505 sets third test conditions CT3, which are test conditions after the second branch point BR2, based on a user's operation on the operation unit 52. The third test conditions CT3 include at least two test conditions, for example, a third A test condition CT3A and a third B test condition CT3B.

[0031] Each of the third-A test conditions CT3A and the third-B test conditions CT3B includes at least one step ST. Each step ST includes operating conditions CM that define the operation to be executed by the testing machine main body 2, and switching conditions CS that switch the operating conditions CM to operating conditions CM of the next step ST. The third test condition CT3A will be further explained with reference to FIG. The third test condition CT3B will be further described with reference to FIG.

[0032] The first condition display unit 511 displays the first test conditions CT1 on the LCD 531 based on a user's operation on the operation unit 52. The first condition display unit 511 displays, for example, a first condition display screen 600 shown in FIG. Further, the first condition display portion 511 displays a first object BJ1 that accepts an instruction to display the first branch condition CB1 on the LCD 531. Further, the first condition display portion 511 displays a second object BJ2 ​​that accepts an instruction to display the second test conditions CT2 on the LCD 531. Further, the first condition display section 511 displays the operating conditions CM and the switching conditions CS that define each of the steps ST in the first test conditions CT1 side by side in the left-right direction of the LCD 531. The first test condition CT1 and the first object BJ1 will be further explained with reference to FIG. The second object BJ2 ​​will be further described with reference to FIGS.

[0033] The first branching condition display section 512 causes the first branching condition CB1 to be displayed on the LCD 531. The first branching condition display section 512 causes the LCD 531 to display, for example, a first branching condition display screen 700 shown in FIG. The first branching condition display unit 512 displays the first branching condition CB1 on the LCD 531 when a predetermined operation is performed on the first object BJ1. The first branch condition CB1 will be further explained with reference to FIG.

[0034] The second condition display unit 513 displays the second test conditions CT2 on the LCD 531. The second condition display unit 513 displays, for example, a second test condition display screen 650 shown in Fig. 5 and a second test condition display screen 660 shown in Fig. 6 on the LCD 531. The second condition display unit 513 displays the second test conditions CT2 on the LCD 531 when a predetermined operation is performed on the second object BJ2. The second test condition CT2 will be further explained with reference to FIGS.

[0035] Further, the second condition display portion 513 displays a third object BJ3 that accepts an instruction to display the first test condition CT1 on the LCD 531. Further, the second condition display portion 513 displays a fourth object BJ4 that accepts an instruction to display the second branch condition CB2 on the LCD 531. Further, the second condition display portion 513 displays a fifth object BJ5 that accepts an instruction to display the third test condition CT3 on the LCD 531. The third object BJ3 and the fifth object BJ5 will be further described with reference to FIGS. The fourth object BJ4 will be further described with reference to FIG.

[0036] The second branching condition display unit 514 causes the LCD 531 to display the second branching condition CB2. The second branching condition display unit 514 displays the second branching condition CB2 on the LCD 531 when a predetermined operation is performed on the fourth object BJ4. The second branch condition CB2 will be further explained with reference to FIG.

[0037] The third condition display unit 515 causes the LCD 531 to display the third test condition CT3. The third condition display unit 515 causes the LCD 531 to display the third test conditions CT3 when a predetermined operation is performed on the fifth object BJ5. Further, the third condition display unit 515 displays a third object BJ3 that accepts an instruction to display the first test condition CT1 on the LCD 531. Further, the third condition display portion 515 displays a second object BJ2 ​​that accepts an instruction to display the second test conditions CT2 on the LCD 531. The third test condition CT3 will be further explained with reference to FIGS.

[0038] The test execution unit 516 causes the testing machine main body 2 to execute a tensile test based on the test conditions set by the first condition setting unit 501, the first branch setting unit 502, the second condition setting unit 503, the second branch setting unit 504, and the third condition setting unit 505. The test conditions include a first test condition CT1, a first branching condition CB1, a second test condition CT2, a second branching condition CB2, and a third test condition CT3.

[0039] [3. Screen displayed on LCD] Next, with reference to Figures 3 to 9, we will explain the screens displayed on the LCD 531 by each of the first condition display section 511, the first branching condition display section 512, the second condition display section 513, the second branching condition display section 514, and the third condition display section 515.

[0040] 3 is a screen diagram showing an example of a first condition display screen 600 that displays the first test conditions CT1. The first condition display screen 600 is displayed by the first condition display section 511. The first test condition CT1 is displayed on the first condition display screen 600. As shown in FIG. 3, the first condition display screen 600 includes an operating condition display section 610, a switching condition display section 620, a test condition selection section 630, and a branch display section 640. The first test condition CT1 includes a first step ST11, a second step ST12, a third step ST13, a fourth step ST14, and a fifth step ST15. That is, the first test condition CT1 includes five steps ST.

[0041] The operating condition display unit 610 displays the operating conditions CM for each of the first step ST11 to the fifth step ST15. The switching condition display unit 620 displays the switching conditions CS for each of the first step ST11 to the fifth step ST15 in association with the operating conditions CM. Moreover, the operating condition display unit 610 displays the operating conditions CM and the switching conditions CS of the first step ST11 to the fifth step ST15 side by side in the left-right direction of the LCD 531.

[0042] As shown in Fig. 3, the operating condition CM of the first step ST11 is that the displacement speed target value XVT is 1.000 mm / min. In Fig. 3 and Figs. 5 to 9, the displacement X is described as "stroke". That is, in the first step ST11, the test execution unit 516 calculates a command value dX of the displacement measurement value XD so that the speed at which the displacement X of the test piece TP changes coincides with the displacement speed target value XVT, and transmits a command signal A4 indicating the command value dX to the servo valve 20. In this case, the test execution unit 516 executes constant displacement speed control.

[0043] 3, the switching condition CS of the first step ST11 is that the test force FP reaches 10 N. That is, when the test force FP reaches 10 N, the test execution unit 516 ends the operation of the first step ST11 and starts the operation of the second step ST12.

[0044] 3, the operating condition CM of the second step ST12 is to keep the displacement X constant. That is, in the second step ST12, the test execution unit 516 calculates a command value dX of the displacement measurement value XD so that the displacement X of the test piece TP is constant, and transmits a command signal A4 indicating the command value dX to the servo valve 20. In this case, the test execution unit 516 executes constant displacement control.

[0045] 3, the switching condition CS of the second step ST12 is that the operation time TM reaches 10 seconds. That is, when the elapsed time from the start of the operation of the second step ST12 reaches 10 seconds, the test execution unit 516 ends the operation of the second step ST12 and starts the operation of the third step ST13.

[0046] 3, the operating condition CM in the third step ST13 is that the displacement speed target value XVT is 1.000 mm / min. That is, in the third step ST13, similarly to the first step ST11, constant displacement speed control is executed.

[0047] 3, the switching condition CS of the third step ST13 is that the test force FP reaches 20 N. That is, when the test force FP reaches 20 N, the test execution unit 516 ends the operation of the third step ST13 and starts the operation of the fourth step ST14.

[0048] 3, the operating condition CM in the fourth step ST14 is to keep the displacement X constant. That is, in the fourth step ST14, constant displacement control is executed in the same way as in the second step ST12.

[0049] 3, the switching condition CS of the fourth step ST14 is that the operation time TM reaches 10 seconds. That is, when the elapsed time from the start of the operation of the fourth step ST14 reaches 10 seconds, the test execution unit 516 ends the operation of the fourth step ST14 and starts the operation of the fifth step ST15.

[0050] As shown in Fig. 3, the operating condition CM of the fifth step ST15 is to execute a "conditional branch process." The "conditional branch process" is a process that determines whether or not a switching condition CS is satisfied, and determines the test condition to be executed next according to the result of the determination. 3, the switching condition CS in the fifth step ST15 indicates that the test force FP is 15 N. Specifically, in the fifth step ST15, as will be described with reference to FIG. 4, the test execution unit 516 determines whether the test force FP is 15 N or more.

[0051] The test condition selection section 630 corresponds to the second object BJ2, the third object BJ3, and the fifth object BJ5. The test condition selection section 630 is configured as a so-called pull-down menu. When the test condition selection section 630 is clicked by the user, a not-shown menu for selecting the test conditions that can be displayed is displayed. The menu displays, for example, "Main Routine, Subroutine A, Subroutine B, Subroutine C, Subroutine D." "Main Routine" is selected when displaying the first test condition CT1. Also, "Subroutine A" is selected when displaying the second A test condition CT2A, and "Subroutine B" is selected when displaying the second B test condition CT2B. Also, "Subroutine C" is selected when displaying the third A test condition CT3A, and "Subroutine D" is selected when displaying the third B test condition CT3B.

[0052] That is, the "predetermined operation" on the second object BJ2 ​​is a click operation on the test condition selection portion 630 and a selection operation of "subroutine A" or "subroutine B." The selection operation is, for example, a click. Moreover, the "predetermined operation" for the third object BJ3 is a click operation for the test condition selection portion 630 and a selection operation for the "main routine." The selection operation is, for example, a click. Moreover, the "predetermined operation" for the fifth object BJ5 is a click operation for the test condition selection portion 630 and a selection operation for "subroutine C" or "subroutine D." The selection operation is, for example, a click.

[0053] The branch display section 640 corresponds to the first object BJ1. When the branch display section 640 is clicked by the user, the first branch condition display section 512 displays the first branch condition display screen 700 shown in Fig. 4. In other words, the branch display section 640 functions as a button object.

[0054] FIG. 4 is a screen diagram showing an example of a first branching condition display screen 700 that displays the first branching condition CB1. The first branching condition display screen 700 is displayed, for example, as a pop-up by the first branching condition display section 512 when the branch display section 640 of the first condition display screen 600 shown in FIG. 3 is clicked by the user.

[0055] The first branching condition display screen 700 includes a first display section 710, a second display section 720, and a third display section 730. The first display section 710 displays the first branching condition CB1. In Fig. 4, the first branching condition CB1 corresponds to, for example, "the test force is 15 N or more." The second display section 720 indicates, for example, that the program proceeds to "Subroutine A" when the first branching condition CB1 shown in the first display section 710 is satisfied. "Subroutine A" corresponds to the second A test condition CT2A. The third display section 730 indicates, for example, that the program proceeds to "Subroutine B" when the first branching condition CB1 shown in the first display section 710 is not satisfied. "Subroutine B" corresponds to the second test condition CT2B.

[0056] 5 is a screen diagram showing an example of a second test condition display screen 650 that displays the second test condition CT2. The second test condition display screen 650 is displayed by the second condition display section 513 when, for example, "Subroutine A" is selected in the test condition selection section 630 of the first condition display screen 600 shown in FIG. The second test condition display screen 650 displays the second A test condition CT2A. As shown in FIG. 5, the second test condition display screen 650 includes an operating condition display section 610, a switching condition display section 620, and a test condition selection section 630. Moreover, the 2A test condition CT2A is composed of a first step ST21 and a second step ST22. That is, the 2A test condition CT2A is composed of two steps ST.

[0057] The operating condition display unit 610 displays the operating conditions CM for each of the first step ST21 to the second step ST22. The switching condition display unit 620 displays the switching condition CS for the first step ST21 in association with the operating conditions CM.

[0058] As shown in FIG. 5, the operating condition CM of the first step ST21 is that the displacement speed target value XVT is 1.000 mm / min. That is, in the first step ST21, the test execution section 516 executes constant displacement speed control, similarly to the first step ST11 under the first test conditions CT1 shown in FIG.

[0059] 5, the switching condition CS of the first step ST21 is that the test force FP reaches 100 N. That is, when the test force FP reaches 100 N, the test execution unit 516 ends the operation of the first step ST21 and starts the operation of the second step ST22.

[0060] As shown in FIG. 5, the operating condition CM in the second step ST22 is displayed as "OFF," and the test execution unit 516 ends the tensile test in the second step ST22.

[0061] The test condition selection section 630 shown in FIG. 5 is the same as the test condition selection section 630 shown in FIG. 3, and therefore a description thereof will be omitted.

[0062] 6 is a screen diagram showing another example of the second test condition display screen 660 that displays the second test condition CT2. The second test condition display screen 660 is displayed by the second condition display section 513 when, for example, "Subroutine B" is selected in the test condition selection section 630 of the first condition display screen 600 shown in FIG. The second test condition display screen 660 displays the second test condition CT2B. As shown in FIG. 6, the second test condition display screen 660 includes an operating condition display section 610 , a switching condition display section 620 , a test condition selection section 630 , and a branch display section 640 . The second-B test conditions CT2B are composed of a first step ST31, a second step ST32, a third step ST33, and a fourth step ST34. That is, the second-B test conditions CT2B are composed of four steps ST.

[0063] The operating condition display unit 610 displays the operating conditions CM for each of the first step ST11 to the fourth step ST14. The switching condition display unit 620 displays the switching conditions CS for each of the first step ST11 to the fourth step ST14 in association with the operating conditions CM.

[0064] As shown in FIG. 6, the operating condition CM of the first step ST31 is that the displacement speed target value XVT is 5.000 mm / min. That is, in the first step ST31, the test execution section 516 executes constant displacement speed control, similarly to the first step ST11 under the first test conditions CT1 shown in FIG.

[0065] 6, the switching condition CS of the first step ST31 is that the test force FP reaches 100 N. That is, when the test force FP reaches 100 N, the test execution unit 516 ends the operation of the first step ST31 and starts the operation of the second step ST32.

[0066] As shown in FIG. 6, the operating condition CM for the second step ST32 is such that the displacement speed target value XVT is −5.000 mm / min. That is, in the second step ST32, the test execution section 516 executes constant displacement speed control, similarly to the first step ST11 under the first test conditions CT1 shown in FIG.

[0067] 6, the switching condition CS of the second step ST32 is that the test force FP reaches 10 N. That is, when the test force FP reaches 10 N, the test execution unit 516 ends the operation of the second step ST32 and starts the operation of the third step ST33.

[0068] As shown in FIG. 6, the operating condition CM of the third step ST33 is that the displacement speed target value XVT is 5.000 mm / min. That is, in the third step ST33, the test execution section 516 executes the same process as in the first step ST31.

[0069] 6, the switching condition CS of the third step ST33 is that the test force FP reaches 100 N. That is, when the test force FP reaches 100 N, the test execution unit 516 ends the operation of the third step ST33 and starts the operation of the fourth step ST34.

[0070] As shown in FIG. 6, the operating condition CM is to execute a "conditional branch process." 6, the switching condition CS in the fourth step ST34 indicates that the displacement X is 10 mm. Specifically, in the fourth step ST34, as will be described with reference to FIG. 7, the test execution unit 516 determines whether the displacement X is 10 mm or more.

[0071] The test condition selection section 630 shown in FIG. 6 is the same as the test condition selection section 630 shown in FIG. 3, and therefore a description thereof will be omitted.

[0072] The branch display portion 640 corresponds to the fourth object BJ4. When the branch display portion 640 is clicked by the user, the second branch condition display portion 514 displays a second branch condition display screen 750 shown in FIG.

[0073] FIG. 7 is a screen diagram showing an example of a second branching condition display screen 750 that displays the second branching condition CB2. The second branching condition display screen 750 is displayed, for example, as a pop-up by the second branching condition display section 514 when the user clicks on the branching display section 640 of the second test condition display screen 660 shown in FIG.

[0074] The second branching condition display screen 750 includes a first display section 710, a second display section 720, and a third display section 730. The first display section 710 displays the second branching condition CB2. The second branching condition CB2 corresponds to, for example, "the stroke is 10 mm or more." The "stroke" indicates the displacement X. The second display section 720 indicates, for example, that the program proceeds to "Subroutine C" when the second branching condition CB2 shown in the first display section 710 is satisfied. "Subroutine C" corresponds to the third A test condition CT3A. For example, the third display section 730 indicates that the program proceeds to "Subroutine D" when the second branch condition CB2 shown in the first display section 710 is not satisfied. "Subroutine D" corresponds to the third test condition CT3B.

[0075] 8 is a screen diagram showing an example of a third test condition display screen 670 that displays the third test condition CT3. The third test condition display screen 670 is displayed by the third condition display section 515 when, for example, "Subroutine C" is selected in the test condition selection section 630 of the second test condition display screen 660 shown in FIG. The third test condition display screen 670 displays the third A test condition CT3A. As shown in FIG. 8, a third test condition display screen 670 includes an operating condition display section 610, a switching condition display section 620, and a test condition selection section 630. The 3A test conditions CT3A are composed of a first step ST41 and a second step ST42. That is, the 3A test conditions CT3A are composed of two steps ST.

[0076] The operating condition display unit 610 displays the operating conditions CM for each of the first step ST41 to the second step ST42. The switching condition display unit 620 displays the switching condition CS for the first step ST41 in association with the operating conditions CM.

[0077] As shown in FIG. 8, the operating condition CM in the first step ST41 is that the displacement speed target value XVT is 200.00 mm / min. That is, in the first step ST41, the test execution section 516 executes constant displacement speed control, similarly to the first step ST11 under the first test conditions CT1 shown in FIG.

[0078] Also, as shown in FIG. 8, the switching condition CS for the first step ST41 is displayed as “OFF,” indicating that the test execution unit 516 executes constant displacement speed control in the first step ST41 until the test piece TP breaks.

[0079] The operating condition CM in the second step ST42 is displayed as "OFF," and the test execution unit 516 ends the tensile test in the second step ST22.

[0080] The test condition selection section 630 shown in FIG. 8 is the same as the test condition selection section 630 shown in FIG. 3, and therefore a description thereof will be omitted.

[0081] FIG. 9 is a screen diagram showing another example of the third test condition display screen 680 that displays the third test condition CT3. The third test condition display screen 680 is displayed by the third condition display section 515 when, for example, “Subroutine D” is selected in the test condition selection section 630 of the second test condition display screen 660 shown in FIG. The third test condition display screen 680 displays the third test condition CT3B. As shown in FIG. 9, a third test condition display screen 680 includes an operating condition display section 610, a switching condition display section 620, and a test condition selection section 630. Moreover, the 3B test conditions CT3B are composed of a first step ST51, a second step ST52, and a third step ST53. That is, the 3A test conditions CT3A are composed of three steps ST.

[0082] The operating condition display unit 610 displays the operating conditions CM for each of the first step ST51 to the third step ST53. The switching condition display unit 620 displays the switching conditions CS for each of the first step ST51 and the second step ST52 in association with the operating conditions CM.

[0083] As shown in FIG. 9, the operating condition CM in the first step ST51 is that the displacement speed target value XVT is 5.00 mm / min. That is, in the first step ST51, the test execution section 516 executes constant displacement speed control, similarly to the first step ST11 under the first test conditions CT1 shown in FIG.

[0084] 9, the switching condition CS of the first step ST51 is that the test force FP reaches 200 N. That is, when the test force FP reaches 200 N, the test execution unit 516 ends the operation of the first step ST51 and starts the operation of the second step ST52.

[0085] As shown in FIG. 9, the operating condition CM in the second step ST52 is to keep the displacement X constant. That is, in the second step ST52, the test execution section 516 executes constant displacement control, similarly to the second step ST12 under the first test condition CT1 shown in FIG.

[0086] 9, the switching condition CS of the second step ST52 is that the operation time TM reaches 3600 sec. That is, when the elapsed time from the start of the operation of the second step ST52 reaches 3600 sec, the test execution unit 516 ends the operation of the second step ST52 and starts the operation of the third step ST53.

[0087] As shown in FIG. 9, the operating condition CM in the third step ST53 is displayed as "OFF," and the test execution unit 516 ends the tensile test in the third step ST53.

[0088] The test condition selection section 630 shown in FIG. 9 is the same as the test condition selection section 630 shown in FIG. 3, and therefore a description thereof will be omitted.

[0089] As described with reference to Figures 3, 5, 6, 8, and 9, the first condition display unit 511 displays the first test conditions CT1 on the LCD 531, the second condition display unit 513 displays the second test conditions CT2 on the LCD 531, and the third condition display unit 515 displays the third test conditions CT3 on the LCD 531. Thus, the user can visually recognize the first test conditions CT1, the second test conditions CT2, and the third test conditions CT3. This improves user convenience.

[0090] As described with reference to Figures 3, 5, 6, 8, and 9, the step ST constituting each of the first test condition CT1, the second test condition CT2, and the third test condition CT3 includes an operation condition CM that specifies the operation to be performed by the testing machine main body 2, and a switching condition CS that switches the operation condition CM to the operation condition CM of the next step ST. Thus, the user can visually recognize the operation condition CM and the switching condition CS of the step ST constituting each of the first test condition CT1, the second test condition CT2, and the third test condition CT3. This improves user convenience.

[0091] 4 and 7, the first branching condition display unit 512 displays the first branching condition CB1 on the LCD 531, and the second branching condition display unit 514 displays the second branching condition CB2 on the LCD 531. This allows the user to visually recognize the first branching condition CB1 and the second branching condition CB2. This improves user convenience.

[0092] As described with reference to FIG. 4 and FIG. 7, the first branching condition display unit 512 displays the first branching condition CB1 on the LCD 531 when a predetermined operation is performed on the first object BJ1, and the second branching condition display unit 514 displays the second branching condition CB2 on the LCD 531 when a predetermined operation is performed on the fourth object BJ4. The first object BJ1 corresponds to the branching display unit 640 of the first condition display screen 600 that displays the first test condition CT1, and the fourth object BJ4 corresponds to the branching display unit 640 of the second test condition display screen 660 that displays the second test condition CT2. Thus, the user can easily display the first branching condition CB1 and the second branching condition CB2. This improves the user's convenience.

[0093] [4. Processing of control unit] Next, the processing of the control unit 51 will be described with reference to FIGS. 10 is a flowchart showing an example of the "test condition setting process" of the control unit 51 according to this embodiment. The "test condition setting process" is a process for setting test conditions CT. The "test condition setting process" is executed by a first condition setting unit 501, a first branch setting unit 502, a second condition setting unit 503, a second branch setting unit 504, and a third condition setting unit 505.

[0094] First, in step S101, the first condition setting unit 501 sets a first test condition CT1, which is a test condition CT before the first branch point BR1, based on a user's operation on the operation unit 52. Next, in step S103, the first branch setting unit 502 sets a first branch condition CB1 at a first branch point BR1 where the first test condition CT1 branches into two or more second test conditions CT2, based on a user's operation on the operation unit 52. Next, in step S105, the second condition setting unit 503 sets, based on a user's operation on the operation unit 52, a second test condition CT2 which is the test condition CT after the first branch point BR1.

[0095] Next, in step S107, the second branch setting unit 504 sets a second branch condition CB2 at a second branch point BR2 where the second test condition CT2 branches into two or more third test conditions CT3, based on a user's operation on the operation unit 52. Next, in step S109, the third condition setting unit 505 sets a third test condition CT3, which is the test condition CT after the second branch point BR2, based on the user's operation on the operation unit 52. Then, the process ends.

[0096] As explained with reference to FIG. 10, the first test condition CT1, the second test condition CT2, the third test condition CT3, the first branching condition CB1, and the second branching condition CB2 can be set by the first condition setting unit 501, the first branching setting unit 502, the second condition setting unit 503, the second branching setting unit 504, and the third condition setting unit 505.

[0097] 11 is a flowchart showing an example of the "test condition display process" of the control unit 51 according to this embodiment. The "test condition display process" is a process for displaying the test conditions CT on the LCD 531. The "test condition display process" is executed by the first condition display unit 511, the first branching condition display unit 512, the second condition display unit 513, the second branching condition display unit 514, and the third condition display unit 515.

[0098] First, in step S201, the first condition display unit 511 displays the first test conditions CT1 on the LCD 531 based on the operation of the operation unit 52 by the user. Next, in step S203, the first branching condition display unit 512 determines whether or not an instruction to display the first branching condition CB1 has been received. The instruction to display the first branching condition CB1 corresponds to a predetermined operation on the first object BJ1. If the first branching condition display unit 512 determines that an instruction to display the first branching condition CB1 has not been received (step S203; NO), the process proceeds to step S207. If the first branching condition display unit 512 determines that an instruction to display the first branching condition CB1 has been received (step S203; YES), the process proceeds to step S205. Then, in step S205, the first branching condition display unit 512 causes the LCD 531 to display the first branching condition CB1.

[0099] Next, in step S207, the second condition display unit 513 determines whether or not an instruction to display the second test conditions CT2 has been received. The instruction to display the second test conditions CT2 corresponds to a predetermined operation on the second object BJ2. If the second condition display unit 513 determines that an instruction to display the second test conditions CT2 has not been received (step S207; NO), the process returns to step S203. If the second condition display unit 513 determines that an instruction to display the second test conditions CT2 has been received (step S207; YES), the process proceeds to step S209. Then, in step S209, the second condition display unit 513 causes the LCD 531 to display the second test conditions CT2.

[0100] Next, in step S211, the second branching condition display unit 514 determines whether or not an instruction to display the second branching condition CB2 has been received. The instruction to display the second branching condition CB2 corresponds to a predetermined operation on the fourth object BJ4. If the second branching condition display unit 514 determines that an instruction to display the second branching condition CB2 has not been received (step S211; NO), the process proceeds to step S215. If the second branching condition display unit 514 determines that an instruction to display the second branching condition CB2 has been received (step S211; YES), the process proceeds to step S213. Then, in step S213, the second branching condition display unit 514 causes the LCD 531 to display the second branching condition CB2.

[0101] Next, in step S215, the third condition display unit 515 determines whether or not an instruction to display the third test conditions CT3 has been received. The instruction to display the third test conditions CT3 corresponds to a predetermined operation on the fifth object BJ5. If the third condition display unit 515 determines that an instruction to display the third test conditions CT3 has not been received (step S215; NO), the process returns to step S211. If the third condition display unit 515 determines that an instruction to display the third test conditions CT3 has been received (step S215; YES), the process proceeds to step S217. Then, in step S217, the third condition display unit 515 displays the third test conditions CT3 on the LCD 531. After that, the process ends.

[0102] As explained with reference to FIG. 11, the first condition display unit 511, the first branching condition display unit 512, the second condition display unit 513, the second branching condition display unit 514, and the third condition display unit 515 can display the first condition display screen 600 shown in FIG. 3, the first branching condition display screen 700 shown in FIG. 4, the second test condition display screen 650 shown in FIG. 5, the second test condition display screen 660 shown in FIG. 6, the second branching condition display screen 750 shown in FIG. 7, the third test condition display screen 670 shown in FIG. 8, and the third test condition display screen 680 shown in FIG. 9.

[0103] 12 is a flowchart showing an example of the "test execution process" of the control unit 51 according to this embodiment. The "test execution process" is a process for causing the testing machine main body 2 to execute a test corresponding to the test conditions CT. The "test execution process" is executed by the test execution unit 516.

[0104] First, in step S301, the test execution section 516 causes the test machine main body 2 to execute a test corresponding to the first test conditions CT1. Next, in step S303, the test execution section 516 determines whether or not the first branch point BR1 has been reached. If the test execution unit 516 determines that the first branch point BR1 has not been reached (step S303; NO), the process returns to step S301. If the test execution unit 516 determines that the first branch point BR1 has been reached (step S303; YES), the process proceeds to step S305.

[0105] Then, in step S305, the test execution section 516 determines whether or not the first branch condition CB1 is satisfied. If the test execution unit 516 determines that the first branching condition CB1 is not satisfied (step S305; NO), the process proceeds to step S309. If the test execution unit 516 determines that the first branching condition CB1 is satisfied (step S305; YES), the process proceeds to step S307. Then, in step S307, the test execution section 516 causes the test machine main body 2 to execute a test corresponding to the second A test conditions CT2A. After that, the process ends.

[0106] If the test execution section 516 determines that the first branch condition CB1 is not satisfied (step S305; NO), in step S309, the test execution section 516 causes the test machine main body 2 to execute a test corresponding to the second test condition B CT2B. Next, in step S311, the test execution section 516 determines whether or not the second branch point BR2 has been reached. If the test execution unit 516 determines that the second branch point BR2 has not been reached (step S311; NO), the process returns to step S309. If the test execution unit 516 determines that the second branch point BR2 has been reached (step S311; YES), the process proceeds to step S313.

[0107] Then, in step S313, the test execution section 516 determines whether or not the second branch condition CB2 is satisfied. If the test execution section 516 determines that the second branch condition CB2 is satisfied (step S313; YES), the process proceeds to step S315. Then, in step S315, the test execution section 516 causes the test machine main body 2 to execute a test corresponding to the third A test condition CT3A. After that, the process ends. If the test execution unit 516 determines that the second branch condition CB2 is not satisfied (step S313; NO), the process proceeds to step S317. Then, in step S317, the test execution section 516 causes the test machine main body 2 to execute a test corresponding to the third test condition CT3B. After that, the process ends.

[0108] As described with reference to FIG. 12, the test execution section 516 can execute tests corresponding to the first test conditions CT1, the second A test conditions CT2A, the second B test conditions CT2B, the third A test conditions CT3A, and the third B test conditions CT3B.

[0109] [5. Aspects and Effects] It will be understood by those skilled in the art that the above-described embodiment is a specific example of the following aspects.

[0110] (Section 1) A material testing machine according to an embodiment of the present invention comprises a testing machine main body having at least one detector, and a control unit, and the control unit comprises a branch setting unit that sets branch conditions at a branch point where test conditions branch into two or more test conditions in correspondence with the detection results of the detector, a first condition setting unit that sets first test conditions which are test conditions before the branch point, and a second condition setting unit that sets second test conditions which are test conditions after the branch point.

[0111] According to the material testing machine described in paragraph 1, the control unit includes a branch setting unit that sets branch conditions at a branch point where the test conditions branch into two or more test conditions in correspondence with the detection result of the detector, a first condition setting unit that sets a first test condition which is the test condition before the branch point, and a second condition setting unit that sets a second test condition which is the test condition after the branch point. Therefore, it is possible to set a test condition that branches into a plurality of test conditions during the test.

[0112] (Section 2) In the material testing machine described in paragraph 1, a display is further provided, and the control unit further includes a first condition display unit that displays the first test condition on the display, and a branch condition display unit that displays the branch condition on the display, and the first condition display unit displays a first object that accepts an instruction to display the branch condition on the display, and when a predetermined operation is performed on the first object, the branch condition display unit displays the branch condition on the display.

[0113] According to the material testing machine described in paragraph 2, the first condition display unit displays a first object that accepts an instruction to display the branching condition on the display, and when a predetermined operation is performed on the first object, the branching condition display unit displays the branching condition on the display. Therefore, the user can easily view the branching conditions on the display, and can easily check the branching conditions.

[0114] (Section 3) In the material testing machine described in paragraph 2, the control unit further includes a second condition display unit that displays the second test conditions on the display, the first condition display unit displays a second object that accepts an instruction to display the second test conditions on the display, and when a predetermined operation is performed on the second object, the second condition display unit displays the second test conditions on the display.

[0115] According to the material testing machine described in paragraph 3, the first condition display unit displays a second object that accepts an instruction to display the second test conditions on the display, and when a predetermined operation is performed on the second object, the second condition display unit displays the second test conditions on the display. Therefore, the user can easily view the second test conditions on the display, and can easily check the second test conditions.

[0116] (Section 4) In the material testing machine described in paragraph 3, the second condition display unit displays a third object that accepts an instruction to display the first test conditions on the display, and when a predetermined operation is performed on the third object, the first condition display unit displays the first test conditions on the display.

[0117] According to the material testing machine described in paragraph 4, the second condition display unit displays a third object that accepts an instruction to display the first test conditions on the display, and when a predetermined operation is performed on the third object, the first condition display unit displays the first test conditions on the display. Therefore, the user can easily view the first test condition on the display, and therefore can easily check the first test condition.

[0118] (Section 5) In a material testing machine described in any one of paragraphs 2 to 4, the first test conditions are composed of a plurality of steps, and each of the plurality of steps includes an operating condition that specifies an operation to be performed by the testing machine main body, and a switching condition that switches the operating condition to the operating condition of the next step.

[0119] According to the material testing machine described in paragraph 5, the first test conditions are composed of a plurality of steps, each of which includes an operating condition that specifies an operation to be performed by the testing machine main body, and a switching condition that switches the operating condition to the operating condition of the next step. That is, the operation to be performed by the testing machine body is specified by the operating conditions, and the operating conditions are switched to the operating conditions of the next step based on the switching conditions. Therefore, the operation of each of the multiple steps and the switching can be clearly specified by the operating conditions and the switching conditions. Therefore, the first test condition consisting of multiple steps can be clearly specified.

[0120] (Section 6) In the material testing machine described in paragraph 5, the first condition display section displays the operating conditions and the switching conditions that define each of the plurality of steps side by side in the left-right or up-down direction of the display.

[0121] According to the material testing machine described in item 6, the first condition display section displays the operating conditions and the switching conditions that define each of the plurality of steps side by side in the left-right or up-down direction of the display. Therefore, the operating conditions and the switching conditions that define each of the multiple steps can be displayed in a manner that is easy for the user to see.

[0122] (Section 7) In the material testing machine described in paragraph 5 or 6, the material testing machine is a tensile testing device that applies a test force to a test piece to deform the test piece, and the operating conditions include at least one of a target value of the test force, a target value of a speed at which the test force changes, a target value of a displacement of the test piece, and a target value of a speed at which the displacement of the test piece changes, and the switching conditions include at least one of the target value of the test force, the target value of the displacement of the test piece, and an operating time TM.

[0123] According to the material testing machine described in paragraph 7, the operating conditions include at least one of a target value of the test force, a target value of a speed at which the test force changes, a target value of the displacement of the test piece, and a target value of a speed at which the displacement of the test piece changes, and the switching conditions include at least one of a target value of the test force, a target value of the displacement of the test piece, and an operating time TM. Therefore, the operating conditions can be properly defined, the switching conditions can be properly defined, and the first test conditions can be properly defined and displayed in a manner that is easy for the user to see.

[0124] [6. Other embodiments] The tensile testing machine 1 according to this embodiment is merely an example of an embodiment of a material testing machine according to the present invention, and can be modified and applied as desired without departing from the spirit and scope of the present invention. For example, in the present embodiment, the case where the material testing machine is the tensile testing machine 1 has been described, but the present embodiment is not limited to this. The material testing machine may apply a test force to the test piece TP and deform the test piece TP to perform a material test. For example, the material testing machine may be a compression testing machine, a bending testing machine, or a torsion testing machine.

[0125] 1 and 2 show functional configurations, and the specific implementation form is not particularly limited. In other words, it is not necessary to implement hardware that corresponds to each functional unit individually, and it is of course possible to implement a configuration in which one processor executes a program to realize the functions of multiple functional units. Also, some of the functions realized by software in the above embodiments may be realized by hardware, or some of the functions realized by hardware may be realized by software.

[0126] In this embodiment, the first test condition CT1 branches into two test conditions CT (i.e., the second A test condition CT2A and the second B test condition CT2B), but the present invention is not limited to this. The first test condition CT1 may branch into three or more test conditions CT.

[0127] In the present embodiment, the first object BJ1 is the branch display section 640 that functions as a button object, but the present invention is not limited to this. The first object BJ1 may be an icon or a pull-down menu.

[0128] In the present embodiment, the second object BJ2 ​​and the third object BJ3 are each a test condition selection unit 630 that functions as a pull-down menu, but the present invention is not limited to this. Each of the second object BJ2 ​​and the third object BJ3 may be a button object or an icon.

[0129] In the present embodiment, the first condition display unit 511 displays the operation conditions CM and switching conditions CS of the steps ST constituting the first test conditions CT1 in a line-up in the horizontal direction of the LCD 531. However, the present invention is not limited to this. The first condition display unit 511 may display the operation conditions CM and switching conditions CS of the steps ST constituting the first test conditions CT1 in a line-up in the vertical direction of the LCD 531.

[0130] In the present embodiment, the control unit 51 is configured as a personal computer, but is not limited thereto. The control unit 51 may be configured as one or more appropriate circuits such as an integrated circuit such as an IC chip or an LSI. The control unit 51 may also be configured as, for example, a tablet terminal, a smartphone, or the like.

[0131] In the present embodiment, the case where the "display" is the LCD 531 has been described, but is not limited to this. The "display" may be, for example, a PDP (Plasma Display Panel) or a CRT (Cathode-Ray Tube) display.

[0132] 10 to 12 are divided according to the main processing contents in order to facilitate understanding of the processing of control unit 51. There is no limitation to the manner of division or names of the processing units shown in each of the flowcharts of FIG. 10 to 12, and the processing units can be further divided into more processing units according to the processing contents, or one processing unit can be divided to include more processes. Furthermore, the processing order of the above flowcharts is not limited to the example shown in the figures.

[0133] The control device 50 of the tensile tester 1 causes the processor 51A of the control unit 51 to execute a control program. The control program can also be recorded in a computer-readable recording medium. The recording medium can be a magnetic or optical recording medium or a semiconductor memory device. Specifically, a portable or fixed recording medium such as a flexible disk, HDD, SSD, CD-ROM (Compact Disk Read Only Memory), DVD, Blu-ray (registered trademark) Disc, magneto-optical disk, flash memory, or card-type recording medium can be used. The recording medium can also be a non-volatile storage device such as a RAM, ROM, or HDD that is an internal storage device of the control unit 51. The control program can also be stored in a server device or the like, and downloaded from the server device to the control unit 51. [Explanation of symbols]

[0134] 1. Tensile testing machine (material testing machine) 2 Testing machine body 3. Control Unit 14 Load cell (detector) 15 Displacement sensor (detector) 19 Differential transformer (detector) 50 Control device 51 Control section 51A Processor 51B Memory 501 First condition setting unit 502 First branch setting unit (branch setting unit) 503 Second condition setting section 504 Second branch setting section 505 Third condition setting section 511 1st condition display section 512 First branch condition display section (branch condition display section) 513 Second condition display section 514 Second branch condition display section 515 Third condition display section 516 Test Execution Department 52 Operation section 53 Display section 531 LCD (display) 600 1st condition display screen 650, 660 Second test condition display screen 670, 680 3rd test condition display screen 700 First branch condition display screen 750 Second branch condition display screen BJ1 First Object BJ2 2nd Object BJ3 3rd Object BJ4 4th Object BJ5 5th Object BR1 1st branch point (branch point) BR2 2nd Junction CB1 First branch condition (branch condition) CB2 Second branch condition CM operating conditions CS switching condition CT test conditions CT1 First test condition CT2 Second test condition CT2A 2A Test Conditions CT2B 2nd B test conditions CT3 Third test condition CT3A 3A Test Conditions CT3B 3rd B test conditions ED elongation measurement value FP test force FT test force target value FVT Test force velocity target value ST Step ST11, ST21, ST31, ST41, ST51 1st Step ST12, ST22, ST32, ST42, ST52 2nd Step ST13, ST33, ST53 3rd Step ST14, ST34 4th step ST15 5th step TM Operating Time TP test specimen X Displacement XT Displacement target value XVT Displacement velocity target value

Claims

1. A testing machine body having at least one detector and a control unit, The control unit is a branch setting unit that sets a branch condition at a branch point where a test condition branches into two or more test conditions in association with the detection result of the detector; a first condition setting unit that sets a first test condition that is a test condition before the branch point; a second condition setting unit that sets a second test condition that is a test condition after the branch point; Equipped with The first test condition is composed of a plurality of steps, A materials testing machine, wherein each of the plurality of steps includes an operating condition that specifies an operation to be performed by the testing machine body, and a switching condition that switches the operating condition to an operating condition for the next step.

2. Further comprising a display, The control unit is a first condition display unit that displays the first test condition on the display; a branch condition display unit that displays the branch condition on the display; Further comprising: the first condition display unit displays a first object that receives an instruction to display the branch condition on the display; when a predetermined operation is performed on the first object, the branching condition display unit displays the branching condition on the display.

2. A material testing machine according to claim 1.

3. The control unit is a second condition display unit that displays the second test condition on the display; the first condition display unit displays a second object that receives an instruction to display the second test condition on the display; when a predetermined operation is performed on the second object, the second condition display unit causes the display to display the second test condition.

3. A material testing machine according to claim 2.

4. the second condition display unit displays a third object that receives an instruction to display the first test condition on the display; when a predetermined operation is performed on the third object, the first condition display unit displays the first test condition on the display.

4. A material testing machine according to claim 3.

5. the first condition display unit displays the operation conditions and the switching conditions that define each of the plurality of steps side by side in a left-right direction or a top-bottom direction of the display; 3. A material testing machine according to claim 2.

6. The material testing machine is a tensile testing device that applies a test force to a test piece to deform the test piece, the operating conditions include at least one of a target value of the test force, a target value of a rate at which the test force changes, a target value of a displacement of the test specimen, and a target value of a rate at which the displacement of the test specimen changes; The switching condition includes at least one of a target value of the test force, a target value of the displacement of the test piece, and an operation time. A material testing machine according to any one of claims 1 to 5.

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