A solid material measurement device and method based on young's modulus

Abstract

The present application relates to a kind of solid material measuring device and method based on Young's modulus, including workbench and the work cover fixedly installed on its top, the inside of work cover is provided with dry plate frame, one side of the top of dry plate frame is fixedly installed with Lloyd mirror, wire chuck and tension sensor are respectively fixedly arranged on the workbench of the two sides of dry plate frame, the rear of wire chuck is provided with air inlet mechanism for the ventilation of work cover;By the tension sensor to the one end of the metal wire to be measured with tension, with the metal wire to be measured being stretched, Lloyd mirror moves along with tension sensor, causing the distance of the light source of laser to Lloyd mirror changes, so that the light source of laser to Lloyd mirror distance becomes larger, interference fringe changes from wide to narrow, directly measure small displacement by the interference of two coherent lights, this method not only improves the sensitivity of measurement, and the dependence on environmental conditions is lower.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of solid material measurement, in particular to a solid material measurement device and method based on Young's modulus. BACKGROUND

[0002] In recent years, laser interference measurement technology has been widely applied, especially in micro-size measurement, because it has the advantages of wide measurement range, high resolution and high measurement accuracy. Young's modulus is a very important parameter in engineering mechanics. The determination of this parameter is of great significance for the study of the mechanical properties of materials such as metal materials, optical fiber materials, nanomaterials, semiconductors, polymers, rubbers, and ceramics. To detect this parameter, micro-scale measurement is required, and high-precision laser interference detection technology is used to obtain more accurate Young's modulus, laying a foundation for the analysis of the mechanical properties of materials.

[0003] The existing optical lever technology mainly relies on the reflection and refraction of light on the lever arm to amplify the micro displacement. This method has high requirements for the stability of the light path and is easily affected by environmental vibration and temperature changes. At the same time, during the testing process, the external airflow flow also easily affects the accuracy of the Young's modulus measurement. SUMMARY

[0004] The technical problems solved by the present application are:

[0005] (1) How to solve the problem that the existing optical lever technology has high requirements for the stability of the light path and is easily affected by environmental vibration and temperature changes;

[0006] (2) How to solve the problem that during the testing process, the external airflow flow also easily affects the accuracy of the Young's modulus measurement.

[0007] The purpose of the present application can be achieved by the following technical solution: a solid material measurement device based on Young's modulus, comprising a workbench and a work cover fixedly installed on the top of the workbench, a dry plate frame is arranged in the work cover, a Lloyd mirror is fixedly installed on one side of the top of the dry plate frame, a metal wire chuck and a tension sensor are respectively fixedly arranged on the workbench on both sides of the dry plate frame, the dry plate frame is fixedly connected with the end of the tension sensor, and an air inlet mechanism for ventilating the work cover is arranged behind the metal wire chuck.

[0008] Further technical improvements of the present application are that the front of the Lloyd mirror is provided with a digital microscope, and the back of the Lloyd mirror is provided with a laser, the position of the output end of the laser corresponds to the position of the input end of the digital microscope; the one end of the measured metal wire is subjected to tension by the tension sensor, as the measured metal wire is stretched, the Lloyd mirror moves with the tension sensor, causing the distance between the light source of the laser and the Lloyd mirror to change, so that the distance between the light source of the laser and the Lloyd mirror becomes larger, the interference fringes become narrow from wide, and the tiny displacement is directly measured by the interference of the two coherent lights, which not only improves the sensitivity of the measurement, but also has lower dependence on environmental conditions.

[0009] Further technical improvements of the present application are that the air inlet mechanism includes an electric push rod fixedly connected with the workbench, a roller is rotatably arranged at the extending end of the electric push rod, and a first sealing door is hingedly connected to the top of the work cover and in rolling connection with the roller.

[0010] Further technical improvements of the present application are that a positioning frame is fixedly installed on the work cover at one side of the electric push rod, an L-shaped plate is rotatably connected to one end of the positioning frame, and the extending end of the electric push rod is movably connected with the bottom of the L-shaped plate through a first lever.

[0011] Further technical improvements of the present application are that a computer is fixedly arranged at the top of the work cover, the input end of the computer is electrically connected with the output end of the digital microscope, a heat dissipation fan is fixedly installed on the side of the first sealing door away from the computer, and the output end of the heat dissipation fan is arranged towards the computer.

[0012] Further technical improvements of the present application are that a ventilation hole is formed in the outer side wall of the work cover away from the electric push rod, two guide frames are fixedly installed on the inner wall top of the work cover, a transmission rod is movably arranged between the two guide frames, the transmission rod is horizontally arranged, and one end of the transmission rod is slidably connected with the top of the L-shaped plate through a second lever; when the extending end of the electric push rod is at the shortest, the first sealing door and the second sealing door are in the closed state, so that the external airflow cannot enter the work cover, and the airflow in the work cover cannot affect the accuracy of the Young's modulus measurement; the heat dissipation fan is started to blow the airflow to the computer for heat dissipation; when the measurement is completed, the extending end of the electric push rod is controlled to be elongated, so that the roller pushes open the first sealing door, the airflow blown by the heat dissipation fan can enter the work cover, at the same time, the first lever drives the L-shaped plate to rotate, so that the second lever and the transmission rod are transversely moved, the transmission rod pushes the second sealing door to be opened, and the work cover is ventilated, so that the work cover can be quickly cooled and the accumulation of toxic gas in the work cover can be avoided.

[0013] Further technical improvements of the present application are that the inner wall of the working cover is fixedly provided with a connecting frame, and a second sealing door for plugging the air hole is hingedly arranged on the outer wall of the working cover, and a tension spring is fixedly connected between the second sealing door and the connecting frame.

[0014] A working method of a solid material measuring device based on Young's modulus, which specifically comprises the following steps:

[0015] Step one: one end of the metal wire to be measured is fixed on a tension sensor, a laser is aimed at a Lloyd mirror, and the two are at a certain small angle, so as to ensure the condition of grazing incidence of the Lloyd mirror; the other end of the metal wire to be measured is fixed on a metal wire chuck, and the lens of a digital microscope is aimed at the light source of the laser, which emits expanded beam laser; one beam of light is reflected to the lens of the digital microscope by the Lloyd mirror, and the other beam of light is directly shot to the lens of the digital microscope, and the two beams of light coincide at the lens of the digital microscope, and there is a certain optical path difference, which meets the coherent condition;

[0016] Step two: a tension is applied to one end of the metal wire to be measured through the tension sensor; as the metal wire to be measured is stretched, the Lloyd mirror moves together with the tension sensor, so that the distance from the light source of the laser to the Lloyd mirror changes, the distance from the light source of the laser to the Lloyd mirror becomes larger, the interference fringes become narrower, and the tiny displacement is directly measured through the interference of the two coherent beams of light; this method not only improves the sensitivity of measurement, but also has lower dependence on environmental conditions;

[0017] Step three: when the extension end of the electric push rod is at the shortest, the first sealing door and the second sealing door are in the closed state, so as to prevent external airflow from entering the working cover and ensure that the airflow in the working cover does not affect the accuracy of the Young's modulus measurement; the cooling fan is started, so that the airflow blown out can cool the computer; after the measurement is completed, the extension end of the electric push rod is controlled to be elongated, so that the first sealing door is opened by the roller, and the airflow blown out by the cooling fan can enter the working cover; at the same time, the first lever drives the L-shaped plate to rotate, so that the second lever and the transmission rod are transversely moved, the second sealing door is pushed open by the transmission rod, so that the working cover is ventilated; the working cover can not only be quickly cooled, but also can avoid the accumulation of toxic gas in the working cover.

[0018] Compared with the prior art, the present application has the following advantages:

[0019] The application is used, one end of the metal wire to be measured is fixed on a tension sensor, a laser is aimed at a Lloyd mirror, and the two are at a small angle with each other, so that the condition of grazing incidence of the Lloyd mirror is ensured, then the other end of the metal wire to be measured is fixed on a metal wire chuck, and the lens of a digital microscope is aimed at the light source of the laser, the light source emits expanded beam laser, one beam of light is reflected to the lens of the digital microscope by the Lloyd mirror, and the other beam of light is directly shot to the lens of the digital microscope, the two beams of light coincide at the lens of the digital microscope, there is a certain optical path difference, and the coherent condition is met, a tension is applied to one end of the metal wire to be measured by the tension sensor, as the metal wire to be measured is stretched, the Lloyd mirror moves together with the tension sensor, the distance from the light source of the laser to the Lloyd mirror changes, the distance from the light source of the laser to the Lloyd mirror becomes larger, the interference fringes change from wide to narrow, and the small displacement is directly measured through the interference of the two coherent beams of light, so that the sensitivity of measurement is improved, and the dependence on environmental conditions is low.

[0020] In use, the extension end of the electric push rod is in the shortest state, at this time, the first sealing door and the second sealing door are in the closed state, preventing external airflow from entering the working cover, and ensuring that the airflow in the working cover does not affect the accuracy of the Young's modulus measurement, and the cooling fan is started to blow out the airflow to cool the computer, after the measurement is completed, the extension end of the electric push rod is controlled to be elongated, so that the first sealing door is opened by the roller, and the airflow blown out by the cooling fan enters the working cover, at the same time, the first lever drives the L-shaped plate to rotate, so that the second lever and the transmission rod are transversely moved, the second sealing door is pushed open by the transmission rod, so that the working cover is ventilated, which can not only quickly cool down, but also avoid the accumulation of toxic gas in the working cover. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to facilitate the understanding of those skilled in the art, the application will be further described below with reference to the drawings.

[0022] Figure 1 It is a schematic diagram of the overall structure of the application;

[0023] Figure 2 It is a schematic diagram of the overall structure of the application;

[0024] Figure 3 It is a schematic diagram of the overall structure of the application;

[0025] Figure 4 It is a schematic diagram of the overall structure of the application;

[0026] Figure 5 It is a schematic diagram of the overall structure of the application;

[0027] Figure 6 It is a schematic diagram of the overall structure of the application; Figure 2Structure enlarged view at A in the middle.

[0028] In the figure: 1, computer; 2, working cover; 3, working table; 4, glass door; 5, heat dissipation fan; 6, air inlet mechanism; 7, laser controller; 8, tension sensor controller; 9, dry plate frame; 10, base; 11, digital microscope; 12, tension sensor; 13, wire chuck; 14, laser; 15, Lloyd mirror; 16, air hole; 17, second sealing door; 18, connecting frame; 601, first sealing door; 602, roller; 603, guide frame; 604, transmission rod; 605, L-shaped plate; 606, electric push rod; 607, second shifting rod; 608, positioning frame; 609, first shifting rod. DETAILED DESCRIPTION

[0029] The technical solutions of the present application will be described clearly and completely below in conjunction with the embodiments. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0030] Please refer to Figures 1-6 As shown in the figure, a solid material measuring device based on Young's modulus comprises a working table 3 and a working cover 2 fixedly installed on the top of the working table 3, the inside of the working cover 2 is provided with a dry plate frame 9, one side of the top of the dry plate frame 9 is fixedly installed with a Lloyd mirror 15, the working table 3 on both sides of the dry plate frame 9 is respectively fixedly provided with a wire chuck 13 and a tension sensor 12, the bottom of the tension sensor 12 is fixedly connected with the working table 3 through a base 10, the dry plate frame 9 is fixedly connected with the end of the tension sensor 12, and the rear of the wire chuck 13 is provided with an air inlet mechanism 6 for ventilating the working cover 2.

[0031] Please refer to Figure 2 and Figure 3 As shown in the figure, the front of the above-mentioned Lloyd mirror 15 is provided with a digital microscope 11, and the back of the Lloyd mirror 15 is provided with a laser 14, the position of the output end of the laser 14 corresponds to the position of the input end of the digital microscope 11; the tension sensor 12 is used to exert tension on one end of the metal wire to be measured, as the metal wire to be measured is stretched, the Lloyd mirror 15 moves together with the tension sensor 12, resulting in a change in the distance between the light source of the laser 14 and the Lloyd mirror 15, so that the distance between the light source of the laser 14 and the Lloyd mirror 15 becomes larger, the interference fringes become narrower, and the tiny displacement is directly measured through the interference of the two coherent lights. This method not only improves the sensitivity of the measurement, but also has lower dependence on environmental conditions.

[0032] Please refer to Figure 1As shown in the drawings, the air inlet mechanism 6 comprises an electric push rod 606 fixedly connected with the workbench 3, and a roller 602 is rotatably arranged at the extending end of the electric push rod 606. The top of the work cover 2 is hingedly connected with a first sealing door 601, and the bottom of the first sealing door 601 is rollingly connected with the roller 602.

[0033] As shown in the drawings, Figure 2 and Figure 4 As shown in the drawings, a positioning frame 608 is fixedly installed on the work cover 2 on one side of the electric push rod 606, one end of the positioning frame 608 is rotatably connected with an L-shaped plate 605, and the extending end of the electric push rod 606 is movably connected with the bottom of the L-shaped plate 605 through a first lever 609.

[0034] As shown in the drawings, Figure 2 and Figure 4 As shown in the drawings, a computer 1 is fixedly arranged on the top of the work cover 2, the input end of the computer 1 is electrically connected with the output end of the digital microscope 11, a heat dissipation fan 5 is fixedly installed on the side of the first sealing door 601 away from the computer 1, and the output end of the heat dissipation fan 5 is arranged towards the computer 1.

[0035] As shown in the drawings, Figure 2 , Figure 5 and Figure 6 As shown in the drawings, a ventilation hole 16 is formed in the outer side wall of the work cover 2 away from the electric push rod 606, two guide frames 603 are fixedly installed on the inner wall of the work cover 2, a transmission rod 604 is movably arranged between the two guide frames 603, the transmission rod 604 is arranged transversely, and one end of the transmission rod 604 is slidably connected with the top of the L-shaped plate 605 through a second lever 607. When the extending end of the electric push rod 606 is at the shortest, the first sealing door 601 and the second sealing door 17 are in the closed state, so as to prevent external airflow from entering the work cover 2 and ensure that the airflow in the work cover 2 will not affect the accuracy of the Young's modulus measurement. The heat dissipation fan 5 is started to blow air to the computer 1 for heat dissipation. After the measurement is completed, the extending end of the electric push rod 606 is controlled to be elongated, so that the roller 602 pushes open the first sealing door 601, and the airflow blown by the heat dissipation fan 5 can enter the work cover 2. At the same time, the first lever 609 drives the L-shaped plate 605 to rotate, so that the second lever 607 and the transmission rod 604 are transversely moved, the transmission rod 604 pushes the second sealing door 17 to open, and the work cover 2 is ventilated. Not only can the work cover 2 be quickly cooled, but also the accumulation of toxic gas in the work cover 2 can be avoided.

[0036] As shown in the drawings, Figure 6 As shown in the drawings, a connecting frame 18 is fixedly installed on the inner wall of the work cover 2, a second sealing door 17 for plugging the ventilation hole 16 is hingedly connected with the outer wall of the work cover 2, and a tension spring is fixedly connected between the second sealing door 17 and the connecting frame 18.

[0037] Please refer to Figure 2 and Figure 3 As shown in FIG. 7, the inside of the working cover 2 is further provided with a laser controller 7, the output end of the laser controller 7 is electrically connected with the input end of the laser 14, and the laser controller 7 is provided with a tension sensor controller 8 on one side, and the input end of the tension sensor controller 8 is electrically connected with the output end of the tension sensor 12.

[0038] Please refer to Figure 1 As shown in FIG. 8, the front of the working cover 2 is hingedly provided with two glass doors 4.

[0039] A working method of a solid material measuring device based on Young's modulus, which specifically comprises the following steps:

[0040] Step one: one end of the metal wire to be measured is fixed on the tension sensor 12, the laser 14 is aligned with the Lloyd mirror 15, and the two are at a certain small angle, so as to ensure the grazing incidence condition of the Lloyd mirror 15, and then the other end of the metal wire to be measured is fixed on the metal wire clamp 13, and the lens of the digital microscope 11 is directly opposite the light source of the laser 14, the light source emits expanded beam laser, one beam of light is reflected to the lens of the digital microscope 11 by the Lloyd mirror 15, and the other beam of light is directly shot to the lens of the digital microscope 11, the two beams of light are superimposed at the lens of the digital microscope 11, and there is a certain optical path difference, which meets the coherence condition;

[0041] Step two: the tension sensor 12 is used to apply tension to one end of the metal wire to be measured, and as the metal wire to be measured is stretched, the Lloyd mirror 15 moves together with the tension sensor 12, which causes the distance between the light source of the laser 14 and the Lloyd mirror 15 to change, so that the distance between the light source of the laser 14 and the Lloyd mirror 15 becomes larger, the interference fringes become narrower, and the small displacement is directly measured through the interference of the two coherent lights, which not only improves the sensitivity of the measurement, but also has lower dependence on environmental conditions;

[0042] Step three: when the extension end of the electric push rod 606 is at the shortest, the first sealing door 601 and the second sealing door 17 are in the closed state, so as to prevent external airflow from entering the working cover 2 and ensure that the airflow in the working cover 2 will not affect the accuracy of the Young's modulus measurement, the cooling fan 5 is opened, so that the blown airflow can blow and cool the computer 1, after the measurement is completed, the extension end of the electric push rod 606 is controlled to be elongated, so that the roller 602 pushes open the first sealing door 601, and the airflow blown by the cooling fan 5 can enter the working cover 2, at the same time, the first lever 609 drives the L-shaped plate 605 to rotate, so that the second lever 607 and the transmission rod 604 are transversely moved, the second sealing door 17 is pushed open by the transmission rod 604, so that the working cover 2 is ventilated, which not only can quickly cool down, but also can avoid the accumulation of toxic gas in the working cover 2.

[0043] The above merely describes the preferred embodiments of the present application, and is not intended to limit the present application in any form. Although the present application has been disclosed with the preferred embodiments as above, it is not intended to limit the present application. Any person skilled in the art can make some changes or modifications to the above disclosed technical content to obtain equivalent embodiments with equivalent changes, as long as the changes or modifications do not deviate from the technical solution of the present application. Any modification, change, equivalent change and modification of the above embodiments made according to the technical essence of the present application still belong to the scope of the technical solution of the present application.

Claims

1. A solid material measuring device based on Young's modulus, comprising a workbench (3) and a working cover (2) fixedly installed on the top of the workbench, characterized in that: The inside of the working cover (2) is provided with a dry plate rack (9), one side of the top of the dry plate rack (9) is fixedly installed with a Lloyd mirror (15), the workbench (3) on both sides of the dry plate rack (9) is respectively fixedly provided with a wire clamp (13) and a tension sensor (12), the dry plate rack (9) is fixedly connected with the end of the tension sensor (12), the rear of the wire clamp (13) is provided with an air inlet mechanism (6) for ventilating the working cover (2); The air inlet mechanism (6) comprises an electric push rod (606) fixedly connected with the workbench (3), a roller (602) rotatably arranged at the extending end of the electric push rod (606), a first sealing door (601) hingedly connected to the top of the working cover (2), the bottom of the first sealing door (601) is rollingly connected with the roller (602), a positioning frame (608) fixedly installed on the working cover (2) on one side of the electric push rod (606), an L-shaped plate (605) rotatably connected to one end of the positioning frame (608), the extending end of the electric push rod (606) movably connected with the bottom of the L-shaped plate (605) through a first lever (609), a ventilation hole (16) formed in the outer side wall of the working cover (2) away from the electric push rod (606), two guide frames (603) fixedly installed on the inner wall of the working cover (2), a transmission rod (604) movably arranged between the two guide frames (603), the transmission rod (604) is horizontally arranged, and one end of the transmission rod (604) is slidably connected with the top of the L-shaped plate (605) through a second lever (607), a connecting frame (18) fixedly installed on the inner wall of the working cover (2), a second sealing door (17) hingedly connected to the outer wall of the working cover (2) for plugging the ventilation hole (16), and a tension spring fixedly connected between the second sealing door (17) and the connecting frame (18).

2. A Young's modulus based solid material measuring device according to claim 1, wherein, The front of the Lloyd mirror (15) is provided with a digital microscope (11), and the back of the Lloyd mirror (15) is provided with a laser (14), and the position of the output end of the laser (14) corresponds to the position of the input end of the digital microscope (11).

3. A Young's modulus based solid material measuring device according to claim 1, wherein, The top of the working cover (2) is fixedly provided with a computer (1), the input end of the computer (1) is electrically connected with the output end of the digital microscope (11), the side of the first sealing door (601) away from the computer (1) is fixedly installed with a cooling fan (5), and the output end of the cooling fan (5) is arranged towards the computer (1).

4. A method of operating a Young's modulus based solid material measurement device according to any one of claims 1 to 3, wherein, The working method specifically comprises the following steps: Step one: one end of the metal wire to be tested is fixed on the tension sensor (12), the laser (14) is aimed at the laue mirror (15), and the two are at a small angle with each other, so that the laue mirror (15) can be guaranteed to be incident, then the other end of the metal wire to be tested is fixed on the metal wire clamp (13), and the lens of the digital microscope (11) is aimed at the light source of the laser (14), which emits expanded beam laser, one beam of light is reflected to the lens of the digital microscope (11) by the laue mirror (15), and the other beam of light is directly shot to the lens of the digital microscope (11), and the two beams of light coincide at the lens of the digital microscope (11); Step two: the tension sensor (12) is used to apply tension to one end of the metal wire to be tested, as the metal wire to be tested is stretched, the laue mirror (15) moves with the tension sensor (12), which changes the distance from the light source of the laser (14) to the laue mirror (15), so that the distance from the light source of the laser (14) to the laue mirror (15) becomes larger, the interference fringes become narrower, and the method directly measures the small displacement by the interference of the two coherent lights, which not only improves the measurement sensitivity, but also has low dependence on environmental conditions; Step three: when the extension end of the electric push rod (606) is at the shortest, the first sealing door (601) and the second sealing door (17) are in the closed state, which prevents external airflow from entering the working cover (2), the cooling fan (5) is turned on, so that the airflow blown out can blow and cool the computer (1), after the measurement is completed, the extension end of the electric push rod (606) is controlled to be elongated, so that the roller (602) pushes open the first sealing door (601), so that the airflow blown out by the cooling fan (5) can enter the working cover (2), at the same time, the first lever (609) drives the L-shaped plate (605) to rotate, so that the second lever (607) and the transmission rod (604) are transversely moved, the second sealing door (17) is pushed open by the transmission rod (604), so that the working cover (2) is ventilated.

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