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Tensile testing machine and method for controlling tensile testing machine

A technique of tensile testing and control method, applied in the direction of using repetitive force/pulsation force to test the strength of materials, using stable tension/pressure to test the strength of materials, measuring devices, etc. problem, to achieve the effect of easy correlation

Pending Publication Date: 2022-04-12
SHIMADZU SEISAKUSHO CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] When performing a tensile test that applies a test force to a test piece in a short period of time like this high-speed tensile testing machine, the data acquisition period is on the order of microseconds, so even if the natural frequency of the tensile testing machine body is several Ten kHz may also affect the test results
That is, in the process of performing the tensile test, the force generated by the resonance of the tensile testing machine body may be superimposed on the force applied to the test piece, resulting in errors in the test results

Method used

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  • Tensile testing machine and method for controlling tensile testing machine
  • Tensile testing machine and method for controlling tensile testing machine
  • Tensile testing machine and method for controlling tensile testing machine

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Experimental program
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no. 1 approach

[0134] Next, refer to Figure 7 and Figure 8 The processing of the control unit 51 in the first embodiment will be described in detail.

[0135] In the first embodiment, the time when the striking structure 60 applies the striking force FD to the testing machine body 2 is before the high-speed tensile testing machine 1 executes the tensile test. That is, the determination unit 513 determines the timing at which the striking structure 60 applies the striking force FD to the testing machine body 2 before the high-speed tensile testing machine 1 executes the tensile test.

[0136] The process of determining the timing of the impact force FD given to the testing machine body 2 by the determination unit 513 is Figure 8 The processing of step S101 of the shown flowchart is executed before the start point of time.

[0137] Figure 7 It is a time chart showing an example of processing of the control unit 51 in the first embodiment.

[0138] Figure 7 The horizontal axis of rep...

no. 2 approach

[0157] Next, refer to Figure 9 to Figure 11 The processing of the control unit 51 in the second embodiment will be described in detail.

[0158] In the second embodiment, the timing at which the striking structure 60 applies the striking force FD to the testing machine body 2 is after the high-speed tensile testing machine 1 performs the tensile test. That is, the determination unit 513 determines the timing at which the striking structure 60 applies the striking force FD to the testing machine body 2 as the timing after the high-speed tensile testing machine 1 executes the tensile test.

[0159] The process of determining the timing of the impact force FD given to the testing machine body 2 by the determination unit 513 is at the start Figure 10 The processing of step S101 of the shown flowchart is executed before the point in time.

[0160] Figure 9 It is a time chart showing an example of processing of the control unit 51 in the second embodiment.

[0161] Figure 9...

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Abstract

The purpose of the present invention is to easily associate the test result of a tensile test with the measurement result of a natural frequency. A high-speed tensile test machine (1) that applies a test force (F) to a test object (TP) and performs a tensile test is provided with: a determination unit (513) that determines the timing at which a striking force (FD) is applied to a test machine body (2); a striking structure (60) that applies a striking force (FD) to the tester body (2) at the timing determined by the determination unit (513); a first detection unit 514 that detects vibration of the tester body 2 caused by the striking force FD; a calculation unit 515 that calculates the natural frequency FA of the high-speed tensile tester 1 on the basis of the detection result of the first detection unit 514; an execution instruction unit 516 that executes a tensile test; and a recording unit 517 that associates information indicating the test result of the tensile test with information indicating the natural frequency FA, and writes the associated information to the result storage unit 518, said timing being included either before or after the tensile test is executed by the tensile test machine 1.

Description

technical field [0001] The invention relates to a tensile testing machine and a control method of the tensile testing machine. Background technique [0002] In the high-speed tensile testing machine, there is a structure in which a tensile test is applied to the test piece by moving the moving side jig at high speed while the both ends of the test piece are held by the moving side jig and the fixed side jig. force (refer to Patent Document 1). [0003] When performing a tensile test that applies a test force to a test piece in a short period of time like this high-speed tensile testing machine, the data acquisition period is on the order of microseconds, so even if the natural frequency of the tensile testing machine body is several Ten kHz may also affect the test results. That is, in the process of performing the tensile test, the force generated accompanying the resonance of the tensile testing machine body may be superimposed on the force applied to the test piece, res...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/08
CPCG01N2203/0039G01N3/303G01N3/32G01N2203/0017G01N2203/0658G01N2203/0688G01N3/307
Inventor 松浦融
Owner SHIMADZU SEISAKUSHO CO LTD