Testing device and testing method for measuring tension-shear performance of composite material

Abstract

The invention belongs to the technical field of composite material performance testing, and discloses a testing device and a testing method for measuring the tension-shear performance of a composite material, and the composite material comprises a rib edge strip and a wall plate which are connected with each other, the testing device for measuring the tension-shear performance of the composite material comprises an environment box, a base, a first force application mechanism, a second force application mechanism and a sensor assembly. The composite material is located in the environment box, the supporting end of the base is located in the environment box and used for supporting and fixing the wall plate, a first connecting piece of the first force application mechanism is located in the environment box and used for applying pulling force in the first direction to the rib edge strip, and a second connecting piece of the second force application mechanism is located in the environment box and used for applying pulling force in the first direction to the rib edge strip. The sensor assembly is located at the joint of the rib edge strip and the wall plate, the terminal equipment processes test data, the shearing performance of the composite material under the thermal-mechanical coupling effect is analyzed, and the accuracy of the composite material tensile-shearing performance test is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of composite material performance testing, and in particular to a testing device and testing method for measuring the tensile-shear performance of a composite material. BACKGROUND

[0002] Composite materials are widely used due to their excellent performance and lightweight characteristics, especially in the fields of aerospace, automotive, and construction. However, the connection performance of composite materials, particularly the tensile-shear performance under complex environments, remains an important research topic. With the influence of thermal-mechanical coupling, the connection points of the material may face greater challenges, especially under extreme conditions such as high temperature and high pressure. The connection points of composite materials are often the weak links of the entire structure. The pros and cons of the connection performance directly affect the safety and reliability of the overall structure. Therefore, studying the connection performance of composite materials under different environmental conditions, especially the tensile-shear performance, is crucial for ensuring the long-term stability of the structure.

[0003] In practical applications, the connection points of composite materials are often exposed to the combined effects of temperature changes, mechanical loads, and other external environments. This thermal-mechanical coupling can cause inconsistent thermal expansion of the material, resulting in additional stress at the connection points, affecting the strength and durability of the composite material connection. Therefore, researching and developing a tensile-shear test that can simulate the thermal-mechanical coupling conditions of composite materials is of great significance for evaluating the reliability of composite material connections. In the prior art, performance testing of composite materials is usually one-sided, such as applying force in only one direction, which cannot truly simulate the combined stress state of composite materials in actual working conditions, and cannot accurately control the test temperature, resulting in low accuracy of the tested tensile-shear performance.

[0004] Therefore, there is an urgent need for a testing device and testing method for measuring the tensile-shear performance of a composite material to solve the above problems. SUMMARY

[0005] The purpose of the present application is to provide a testing device and testing method for measuring the tensile-shear performance of a composite material to solve the problem of low accuracy of composite material tensile-shear performance testing in the prior art.

[0006] As conceived above, the technical solution adopted by the present application is:

[0007] The testing device for measuring the tensile-shear performance of a composite material, the composite material comprising a rib strip and a wall plate connected together, the testing device for measuring the tensile-shear performance of a composite material comprising:

[0008] An environmental box, the composite material being located in the environmental box, the environmental box being used to provide a preset temperature for the composite material;

[0009] a base, a support end of the base is located in the environmental box, and the base is used to support and fix the wallboard;

[0010] a first force applying mechanism, a first connecting piece of the first force applying mechanism is located in the environmental box, the first connecting piece is connected with the rib strip, and the first connecting piece is used to apply a pulling force along a first direction to the rib strip;

[0011] a second force applying mechanism, a second connecting piece of the second force applying mechanism is located in the environmental box, the second connecting piece is connected with the rib strip, and the second connecting piece is used to apply a shearing force along a second direction to the rib strip, the first direction being perpendicular to the second direction;

[0012] a sensor assembly, the sensor assembly is located at a connection between the rib strip and the wallboard, and the sensor assembly is connected with a terminal device to transmit test data to the terminal device.

[0013] Further, the test device for measuring the tensile-shear performance of a composite material further comprises a clamping assembly, the clamping assembly is used to clamp the rib strip, the first connecting piece is connected to one end of the clamping assembly away from the wallboard, and the second connecting piece is connected to one end of the clamping assembly in the second direction.

[0014] Further, the clamping assembly comprises a first clamping plate and a second clamping plate arranged oppositely, when the clamping assembly clamps the rib strip, the first clamping plate and the second clamping plate are respectively located on two sides of the rib strip and are connected through a fixing piece.

[0015] Further, the fixing piece is provided in plurality, the first clamping plate comprises a first connecting portion, the second clamping plate comprises a third connecting portion, the first connecting portion and the third connecting portion are arranged oppositely, and are both provided with a plurality of corresponding fixing holes, and a plurality of the fixing pieces are located in the plurality of corresponding fixing holes to fix the first clamping plate and the second clamping plate.

[0016] Further, the first clamping plate further comprises a second connecting portion, in the first direction, the second connecting portion is located on one side of the first connecting portion, the second clamping plate further comprises a fourth connecting portion, in the first direction, the fourth connecting portion is located on one side of the third connecting portion, the second connecting portion and the fourth connecting portion are arranged oppositely, and are both provided with a plurality of corresponding mounting holes, the first connecting piece and the second connecting piece are both provided with a plurality of connecting holes matched with the plurality of mounting holes, and are connected through a plurality of mounting pieces to realize the connection between the first connecting piece, the second connecting piece and the clamping assembly.

[0017] Further, when the first connecting portion and the third connecting portion clamp the rib strip, a gap exists between the second connecting portion and the fourth connecting portion.

[0018] In the first direction, the first connecting member and the second connecting member are both located between the second connecting part and the fourth connecting part, or the first connecting member is located in the gap and the second connecting member is located outside the gap.

[0019] Further, the first connecting part is provided with a plurality of strip-shaped holes, and the plurality of strip-shaped holes are uniformly and spacedly arranged along the second direction.

[0020] Further, the first connecting member and the second connecting member are both clamping jaws, and the clamping jaws clamp the rib strip.

[0021] Further, the first force applying mechanism further comprises a first driving part and a first output part, the first output part is rotatably connected with the first connecting member, the first driving part is used for driving the first output part to move along the first direction, so as to realize that the first connecting member applies the pulling force along the first direction to the rib strip, and the driving force of the first driving part is adjustable.

[0022] The second force applying mechanism further comprises a second driving part and a second output part, the second output part is rotatably connected with the second connecting member, the second driving part is used for driving the second output part to move along the first direction, so as to realize that the second connecting member applies the shearing force along the second direction to the rib strip, and the driving force of the second driving part is adjustable.

[0023] The test method for measuring the tensile-shear performance of the composite material uses the test device for measuring the tensile-shear performance of the composite material as described above, and comprises the following steps:

[0024] S1, preparing the composite material and fixing the composite material on the test device for measuring the tensile-shear performance of the composite material;

[0025] S2, installing the sensor assembly at the connecting position of the rib strip and the wallboard;

[0026] S3, opening the environmental box to heat according to the preset temperature;

[0027] S4, driving the first force applying mechanism and the second force applying mechanism to gradually apply the pulling force along the first direction and the shearing force along the second direction according to the preset speed respectively;

[0028] S5, using the terminal equipment to analyze the test data collected by the sensor assembly, obtaining the load-displacement curve and the strain data, so as to evaluate the tensile-shear performance of the composite material.

[0029] The beneficial effects of the present application are as follows:

[0030] The application provides a test device and a test method for measuring tensile-shear performance of a composite material, the composite material comprising a rib strip and a wallboard connected together, the test device for measuring tensile-shear performance of the composite material comprising an environmental box, a base, a first force applying mechanism, a second force applying mechanism and a sensor assembly, the composite material being located in the environmental box, the environmental box being used to provide a preset temperature for the composite material, a supporting end of the base being located in the environmental box and being used to support and fix the wallboard, a first connecting piece of the first force applying mechanism being located in the environmental box, the first connecting piece being connected with the rib strip and being used to apply a tensile force along a first direction to the rib strip, a second connecting piece of the second force applying mechanism being located in the environmental box, the second connecting piece being connected with the rib strip and being used to apply a shearing force along a second direction to the rib strip, the first direction being perpendicular to the second direction, the sensor assembly being located at a connecting position of the rib strip and the wallboard, the sensor assembly being connected with a terminal device to transmit test data to the terminal device. When the tensile-shear performance of the composite material needs to be tested, the environmental box provides the preset temperature, the wallboard is fixed on the base, and the first force applying mechanism and the second force applying mechanism operate simultaneously to apply the tensile force and the shearing force to the rib strip from the first direction and the second direction respectively, so that the temperature and the loading condition can be accurately controlled during the test, the thermal force coupling effect that may be encountered in actual use is simulated, and the test data at the connecting position of the rib strip and the wallboard, i.e. the force value, the deformation value and the temperature at the connecting position, are transmitted to the terminal device through the sensor assembly, the terminal device processes the test data, and then the shearing performance of the composite material under the thermal force coupling effect is accurately analyzed, and the accuracy of the tensile-shear performance test of the composite material is improved. BRIEF DESCRIPTION OF DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the description of the embodiments of the present application. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art according to the contents of the embodiments of the present application and the drawings without any creative effort.

[0032] Figure 1 is a first structural schematic view of the test device for measuring tensile-shear performance of a composite material provided by the first embodiment of the present application;

[0033] Figure 2 is a second structural schematic view of the test device for measuring tensile-shear performance of a composite material provided by the first embodiment of the present application;

[0034] Figure 3 is a third structural schematic view of the test device for measuring tensile-shear performance of a composite material provided by the first embodiment of the present application;

[0035] Figure 4 is a fourth structural schematic view of the test device for measuring tensile-shear performance of a composite material provided by the first embodiment of the present application;

[0036] Figure 5 Figure 1 is a structural schematic view of a clamping assembly provided by an embodiment of the present application.

[0037] In the drawings:

[0038] 1, environmental box; 2, base; 3, first force applying mechanism; 31, first connecting piece; 4, second force applying mechanism; 5, clamping assembly; 51, first clamping plate; 511, first connecting part; 5111, strip-shaped hole; 512, second connecting part; 52, second clamping plate; 521, third connecting part; 522, fourth connecting part; 6, fixing hole; 7, mounting hole. DETAILED DESCRIPTION

[0039] In order to make the technical problems solved by the present application, the technical solutions adopted and the technical effects reached more clear, the technical solutions of the present application will be further described below in conjunction with the accompanying drawings and through specific embodiments. It can be understood that the specific embodiments described here are only used to explain the present application, but not to limit the present application. In addition, it should be noted that, in order to facilitate the description, only the parts related to the present application are shown in the drawings, not all.

[0040] It should be noted that: similar reference numerals and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0041] In the description of the present application, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0042] In the present application, unless otherwise explicitly specified and limited, the "upper" or "lower" of the first feature to the second feature can include the direct contact of the first and second features, or can include the contact of the first and second features through another feature between them. Moreover, the "upper", "upper" and "upper" of the first feature to the second feature includes the vertical and oblique above of the first feature to the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The "lower", "lower" and "lower" of the first feature to the second feature includes the vertical and oblique below of the first feature to the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature. In the description of the present embodiment, if not specially stated, "a plurality of" specifically refers to two or more than two.

[0043] In the description of the present embodiment, the terms "upper", "lower", "right", "left", and the like, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are only used to distinguish in the description, and have no special meaning.

[0044] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there can be a mediating element.

[0045] The technical solutions of the present application will be further illustrated below by specific embodiments in conjunction with the drawings.

[0046] Embodiment one

[0047] The present embodiment provides a test device for measuring the tensile shear performance of a composite material, the composite material comprising a rib strip and a wallboard connected together, which can accurately test the shear performance of the composite material under the action of heat and force coupling, thereby improving the accuracy of the tensile shear performance test of the composite material.

[0048] As Figure 1As shown, the test device for measuring the tensile-shear performance of the composite material comprises an environmental box 1, a base 2, a first force applying mechanism 3, a second force applying mechanism 4 and a sensor assembly (not shown in the figure). Specifically, the composite material (not shown in the figure) is located in the environmental box 1, which is used to provide a preset temperature for the composite material, and the supporting end (not shown in the figure) of the base 2 is located in the environmental box 1 and is used to support and fix the wallboard (not shown in the figure). The first connecting piece 31 of the first force applying mechanism 3 is located in the environmental box 1 and is connected with the rib strip (not shown in the figure) and is used to apply a tensile force to the rib strip along a first direction. The second connecting piece (not shown in the figure) of the second force applying mechanism 4 is located in the environmental box 1 and is connected with the rib strip and is used to apply a shear force to the rib strip along a second direction. The first direction is perpendicular to the second direction. The sensor assembly is located at the connection between the rib strip and the wallboard and is connected with a terminal device (not shown in the figure) to transmit the test data to the terminal device. It can be understood that when the tensile-shear performance of the composite material needs to be tested, the environmental box 1 provides a preset temperature, the wallboard is fixed on the base 2, and the first force applying mechanism 3 and the second force applying mechanism 4 operate simultaneously to apply a tensile force and a shear force to the rib strip from the first direction and the second direction respectively. The temperature and the loading conditions can be accurately controlled during the test, the thermal-mechanical coupling effect that may be encountered in actual use can be simulated, and the test data at the connection between the rib strip and the wallboard, i.e. the force value, the deformation value and the temperature at the connection, are transmitted to the terminal device through the sensor assembly. The terminal device processes the test data to accurately test the shear performance of the composite material under the thermal-mechanical coupling effect, thereby improving the accuracy of the tensile-shear performance test of the composite material.

[0049] It should be noted that the rib strip and the wallboard connected together are in an inverted T shape, and the specific shape thereof is known in the art and will not be described here.

[0050] Further, the environmental box 1 can also provide a preset humidity for the composite material. It can be understood that by simultaneously providing a preset temperature and a preset humidity for the composite material through the environmental box 1, the temperature and the humidity can be accurately controlled during the test, which is beneficial to improve the test accuracy of the tensile-shear performance of the composite material and to test the tensile-shear performance of the composite material under different environments.

[0051] For example, the sensor assembly is an FBG sensor, which detects the force value, the deformation value and the temperature at the connection and transmits them to the terminal device. Alternatively, the sensor assembly comprises a plurality of different types of sensors, such as piezoelectric sensors, linear variable differential transformers and thermistor sensors, which respectively detect the force value, the deformation value and the temperature at the connection and transmit them to the terminal device. The terminal device can be a computer, which statistically analyzes the collected test data to obtain the load-displacement curve and the strain data and evaluate the connection performance of the composite material. The specific type of the sensor is not limited in the present embodiment and can meet the detection requirements.

[0052] Exemplarily, the support end of the base 2 is further provided with a connecting pressing plate (not shown in the figure), one end of the connecting pressing plate is connected with the base 2, and the other end can abut against the wallboard in the first direction to fix the wallboard, thereby improving the stability of the wallboard relative to the support end and improving the accuracy of the test. In the embodiment, the support end of the base 2 is provided with a screw hole (not shown in the figure), and the connecting pressing plate is connected with the screw hole of the support end of the base 2 through a bolt, so as to further improve the flexibility of disassembly and assembly of the connecting pressing plate and the limiting effect on the wallboard. The test device for measuring the tensile-shear performance of the composite material further comprises a counterforce frame, and the base 2 is connected with the counterforce frame to provide a fixed boundary condition for the bottom of the wallboard, thereby being more stable.

[0053] Further, the temperature and humidity in the environmental box 1 can be adjusted, so that the tensile-shear performance of the composite material under different temperature and humidity conditions can be tested. In order to reduce the heat loss in the environmental box 1, the inside of the environmental box 1 can be coated and heat-insulated.

[0054] Exemplarily, the first force applying mechanism 3 further comprises a first driving part (not shown in the figure) and a first output part (not shown in the figure), the first output part is rotatably connected with the first connecting piece 31, and the first driving part is used to drive the first output part to move in the first direction, so as to realize that the first connecting piece 31 applies a tensile force in the first direction to the rib strip, and the driving force of the first driving part is adjustable. The second force applying mechanism 4 further comprises a second driving part (not shown in the figure) and a second output part (not shown in the figure), the second output part is rotatably connected with the second connecting piece, and the second driving part is used to drive the second output part to move in the first direction, so as to realize that the second connecting piece applies a shear force in the second direction to the rib strip, and the driving force of the second driving part is adjustable. It can be understood that, by setting the first driving part and the second driving part with adjustable driving force, the tensile force and the shear force applied to the rib strip are variable, and the test of the tensile-shear strength under different temperature and loading conditions can be realized by cooperating with the environmental box 1, the influence of thermal force coupling on the connection performance of the composite material is more accurately analyzed, and the first output part is rotatably connected with the first connecting piece 31, and the second output part is rotatably connected with the second connecting piece, so that the first connecting piece 31 and the second connecting piece are convenient to connect with the composite material, and the installation is convenient.

[0055] Further, the first driving part and the second driving part can be servo motors, the servo motor moves very accurately, meets the high-precision test requirement, has fast response and high stability, and ensures the reliability of the test, the first output part and the first connecting piece 31 are provided with through holes, the first output part and the first connecting piece 31 are rotatably connected through a pin shaft sleeve, the second output part and the second connecting piece are provided with through holes, and the first output part and the first connecting piece 31 are rotatably connected through a pin shaft sleeve.

[0056] Further, asFigure 2 As shown, the test device for measuring the tensile-shear of the composite material further comprises a clamping assembly 5 for clamping the rib strip, the first connecting member 31 is connected to one end of the clamping assembly 5 away from the wallboard, and the second connecting member is connected to one end of the clamping assembly 5 in the second direction. It can be understood that by arranging the clamping assembly 5, the first connecting member 31 and the second connecting member can be connected to the rib strip through the clamping assembly 5, and the clamping assembly 5 can be installed on the rib strip in advance, thereby improving the overall installation efficiency.

[0057] Of course, in other embodiments, the first connecting member 31 and the second connecting member can also be clamping jaws, which clamp the rib strip. Specifically, one of the clamping jaws clamps one end of the rib strip away from the wallboard, and the other clamping jaw clamps one end of the rib strip in the second direction.

[0058] Further, as shown, Figure 3 The clamping assembly 5 comprises a first clamping plate 51 and a second clamping plate 52 arranged oppositely, and when the clamping assembly 5 clamps the rib strip, the first clamping plate 51 and the second clamping plate 52 are respectively located on both sides of the rib strip and are connected through a fixing member. It can be understood that the first clamping plate 51 and the second clamping plate 52 are connected through the fixing member (not shown in the figure) for clamping the rib strip, which is convenient and stable to install.

[0059] Exemplarily, in the second direction, the length of the first clamping plate 51 and the length of the second clamping plate 52 are both greater than the length of the rib strip, which can improve the contact area of the first clamping plate 51 and the second clamping plate 52, and the clamping effect is more stable.

[0060] Further, as shown, Figure 3 and Figure 4 The fixing member is provided with a plurality of first connecting portions 511, the second clamping plate 52 comprises a third connecting portion 521, the first connecting portion 511 and the third connecting portion 521 are arranged oppositely, and are both provided with a plurality of corresponding fixing holes 6, and the plurality of fixing members are located in the plurality of corresponding fixing holes 6 to fix the first clamping plate 51 and the second clamping plate 52. It can be understood that by arranging the plurality of fixing members and the plurality of corresponding fixing holes 6, when the first clamping plate 51 and the second clamping plate 52 clamp the rib strip, the fixing members can be matched with the fixing holes 6 on the first clamping plate 51 and the fixing holes 6 on the second clamping plate 52 to fix the first clamping plate 51 and the second clamping plate 52, thereby further improving the fixing effect of the clamping assembly 5 on the rib strip.

[0061] In this embodiment, the fixing member can be a bolt with a nut, and the fixing hole 6 is a through hole, and the bolt can be arranged in the through hole and matched with the nut to fix the first clamping plate 51 and the second clamping plate 52.

[0062] Exemplarily, asFigures 3-5 As shown, the plurality of fixing holes 6 on the first connecting part 511 and the plurality of fixing holes 6 on the third connecting part 521 are both arranged in the second direction, and the first clamping plate 51 and the second clamping plate 52 are relative to the rib strip, in the second direction, the rib strip is located in the middle position, the fixing holes 6 at both ends of the first connecting part 511 and the fixing holes 6 at both ends of the third connecting part 521 will not be blocked by the rib strip, and will not interfere with the fixation of the first clamping plate 51 and the second clamping plate 52.

[0063] Further, the first clamping plate 51 further comprises a second connecting part 512, and the second connecting part 512 is located on one side of the first connecting part 511 in the first direction. The second clamping plate 52 further comprises a fourth connecting part 522, and the fourth connecting part 522 is located on one side of the third connecting part 521 in the first direction. The second connecting part 512 and the fourth connecting part 522 are oppositely arranged, and both are provided with a plurality of corresponding mounting holes 7. The first connecting part 31 and the second connecting part are both provided with a plurality of connecting holes matched with the plurality of mounting holes 7, and are connected through a plurality of mounting parts, so as to realize the connection between the first connecting part 31, the second connecting part and the clamping assembly 5. Figure 3 And Figure 4 As shown, the second connecting part 512 is located above the first connecting part 511, and the fourth connecting part 522 is located above the third connecting part 521. It can be understood that by arranging the plurality of mounting holes 7 corresponding to the plurality of connecting holes and connecting through the plurality of mounting parts, on the basis of realizing the detachable connection between the clamping assembly 5 and the first force applying mechanism 3 and the second force applying mechanism 4, the stability of the connection between the clamping assembly 5 and the first force applying mechanism 3 and the second force applying mechanism 4 is improved, and the stability of the whole testing device is improved.

[0064] Further, as shown in Figure 3 And Figure 4 As shown, when the first connecting part 511 and the third connecting part 521 clamp the rib strip, there is a gap between the second connecting part 512 and the fourth connecting part 522. In the first direction, the first connecting part 31 and the second connecting part are both located between the second connecting part 512 and the fourth connecting part 522. Of course, in other embodiments, the first connecting part 31 can be located in the gap, and the second connecting part can be located outside the gap. Even, the first connecting part 31 is located outside the gap, and the second connecting part is located in the gap, which has a variety of installation methods.

[0065] Further, as shown in Figure 5As shown, the first connecting portion 511 is provided with a plurality of strip-shaped holes 5111, which are uniformly and spaced apart along the second direction. Specifically, the length direction of the strip-shaped hole 5111 is parallel to the first direction, and one end of the strip-shaped hole 5111 extends to the end of the first connecting portion 511 away from the third connecting portion 521. It can be understood that, by providing the strip-shaped hole 5111, the position of the rib strip relative to the first connecting portion 511 and the third connecting portion 521 can be observed, and the installation is facilitated.

[0066] Exemplarily, the clamping assembly 5, the first connecting member 31 and the second connecting member are made of invar steel, which can reduce the thermal expansion of the material itself, so as to reduce the influence on the test results.

[0067] Embodiment Two

[0068] The embodiment provides a test method for measuring the tensile-shear performance of a composite material, which uses the test device for measuring the tensile-shear performance of a composite material provided in the embodiment one, can accurately test the shear performance of the composite material under the action of thermal force coupling, and improves the accuracy of the tensile-shear performance test of the composite material.

[0069] The test method for measuring the tensile-shear performance of a composite material comprises the following steps:

[0070] S1, preparing a composite material and fixing the composite material on the test device for measuring the tensile-shear performance of a composite material;

[0071] S2, installing a sensor assembly at the connecting position of the rib strip and the wall plate;

[0072] S3, opening the environmental box 1 to heat it according to the preset temperature;

[0073] S4, driving the first force applying mechanism 3 and the second force applying mechanism 4 to gradually apply the tensile force along the first direction and the shear force along the second direction according to the preset speed respectively;

[0074] S5, analyzing the test data collected by the sensor assembly by using a terminal device, obtaining a load-displacement curve and strain data, and evaluating the tensile-shear performance of the composite material.

[0075] Through the above steps, first, the composite material is fixed on the test device for measuring the tensile shear of the composite material, then the sensor assembly is installed at the connecting part of the rib strip and the wallboard to obtain the test data of the connecting part of the rib strip and the wallboard, then the environmental box 1 is opened and the environmental box 1 is adjusted to heat according to the preset temperature, then the first force applying mechanism 3 and the second force applying mechanism 4 are driven to gradually apply the tensile force in the first direction and the shear force in the second direction according to the preset rate, in the test process, the sensor assembly continuously transmits the collected test data, i.e. the force value, the deformation amount and the temperature of the connecting part to the terminal equipment, the terminal equipment processes the test data, and then accurately analyzes the shear performance of the composite material under the thermal force coupling effect, thereby improving the accuracy of the tensile shear performance test of the composite material.

[0076] Further, before step S3, the composite material is also preheated to eliminate the initial internal stress of the material and avoid affecting the test accuracy.

[0077] It should be noted that the above are only the preferred embodiments of the present application and the technical principles applied. Those skilled in the art will understand that the present application is not limited to the specific embodiments described herein, and those skilled in the art can make various obvious changes, readjustments and substitutions without departing from the scope of the present application. Therefore, although the present application has been described in more detail through the above embodiments, the present application is not limited to the above embodiments, and can include more other equivalent embodiments without departing from the concept of the present application, and the scope of the present application is determined by the scope of the appended claims.

Claims

1. A test device for measuring the tensile shear properties of a composite material comprising a rib and a wall panel connected thereto, characterized in that: The testing device for measuring the tensile and shear properties of composite materials comprises: An environmental chamber (1), wherein the composite material is located in the environmental chamber (1), and the environmental chamber (1) is used to provide a preset temperature for the composite material; A base (2), the supporting end of the base (2) being located in the environmental chamber (1) and being used to support and fix the wall panel; a first force applying mechanism (3), wherein a first connecting member (31) of the first force applying mechanism (3) is located in the environmental chamber (1), and the first connecting member (31) is connected to the rib edge strip and is used to apply a pulling force along a first direction to the rib edge strip; a second force applying mechanism (4), wherein a second connecting member of the second force applying mechanism (4) is located in the environmental chamber (1), the second connecting member is connected to the rib edge strip, and applies a shear force along a second direction to the rib edge strip, the first direction being perpendicular to the second direction; The sensor assembly is located at the connection between the rib edge strip and the wall panel, and the sensor assembly is connected to the terminal device to transmit test data to the terminal device.

2. The testing device for measuring the tensile and shear properties of composite materials according to claim 1, characterized in that: The testing device for measuring the tensile-shear properties of composite materials further comprises a clamping assembly (5), wherein the clamping assembly (5) is used to clamp the rib strip, the first connecting member (31) is connected to an end of the clamping assembly (5) away from the wall panel, and the second connecting member is connected to an end of the clamping assembly (5) in the second direction.

3. The testing device for measuring the tensile and shear properties of composite materials according to claim 2, characterized in that: The clamping assembly (5) comprises a first clamping plate (51) and a second clamping plate (52) which are arranged opposite to each other. When the clamping assembly (5) clamps the rib edge strip, the first clamping plate (51) and the second clamping plate (52) are respectively located on both sides of the rib edge strip and are connected by a fixing member.

4. The testing device for measuring the tensile and shear properties of composite materials according to claim 3, characterized in that: There are multiple fixing members, the first clamping plate (51) includes a first connecting portion (511), the second clamping plate (52) includes a third connecting portion (521), the first connecting portion (511) and the third connecting portion (521) are arranged relative to each other, and are both provided with multiple corresponding fixing holes (6), and the multiple fixing members are located in the multiple corresponding fixing holes (6) to fix the first clamping plate (51) and the second clamping plate (52).

5. The testing device for measuring the tensile and shear properties of composite materials according to claim 4, characterized in that: The first clamping plate (51) further includes a second connecting portion (512), and in the first direction, the second connecting portion (512) is located on one side of the first connecting portion (511). The second clamping plate (52) further includes a fourth connecting portion (522), and in the first direction, the fourth connecting portion (522) is located on one side of the third connecting portion (521). The second connecting portion (512) and the fourth connecting portion (522) are arranged relative to each other and are both provided with a plurality of corresponding mounting holes (7). The first connecting member (31) and the second connecting member are both provided with a plurality of connecting holes that match the plurality of mounting holes (7), and are connected through a plurality of mounting members to realize the connection between the first connecting member (31) and the second connecting member and the clamping assembly (5).

6. The testing device for measuring the tensile and shear properties of composite materials according to claim 5, characterized in that: When the first connecting portion (511) and the third connecting portion (521) clamp the rib edge strip, a gap exists between the second connecting portion (512) and the fourth connecting portion (522); In a first direction, the first connecting member (31) and the second connecting member are both located between the second connecting portion (512) and the fourth connecting portion (522); or, the first connecting member (31) is located within the gap, and the second connecting member is located outside the gap.

7. The testing device for measuring the tensile and shear properties of composite materials according to claim 4, characterized in that: The first connecting portion (511) is provided with a plurality of strip-shaped holes (5111), and the plurality of strip-shaped holes (5111) are evenly spaced along the second direction.

8. The testing device for measuring the tensile and shear properties of composite materials according to claim 1, characterized in that: The first connecting member (31) and the second connecting member are both clamping claws, and the clamping claws clamp the rib edge strip.

9. The testing device for measuring the tensile and shear properties of composite materials according to any one of claims 1 to 8, characterized in that: The first force-applying mechanism (3) further includes a first driving portion and a first output portion, wherein the first output portion is rotatably connected to the first connecting member (31), and the first driving portion is used to drive the first output portion to move in a first direction, so that the first connecting member (31) applies a pulling force in the first direction to the rib edge strip, and the driving force of the first driving portion is adjustable; The second force-applying mechanism (4) further comprises a second driving portion and a second output portion, wherein the second output portion is rotatably connected to the second connecting member, and the second driving portion is used to drive the second output portion to move in a first direction so as to enable the second connecting member to apply a shear force in a second direction to the rib edge strip, and the driving force of the second driving portion is adjustable.

10. A test method for measuring the tensile shear properties of a composite material, using the test device for measuring the tensile shear properties of a composite material according to any one of claims 1 to 9, characterized in that: The steps include: S1. preparing a composite material and fixing the composite material on the testing device for measuring tension and shear of the composite material; S2. Install the sensor assembly at the connection between the rib and the wall panel; S3, opening the environmental chamber (1) to heat it according to a preset temperature; S4, driving the first force applying mechanism (3) and the second force applying mechanism (4) to gradually apply a pulling force in the first direction and a shearing force in the second direction respectively at a preset rate; S5. Use the terminal device to analyze the test data collected by the sensor assembly to obtain a load-displacement curve and strain data to evaluate the tensile-shear properties of the composite material.

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