Axial compression test clamp

Abstract

The utility model belongs to the technical field of composite material structure test, and discloses an axial compression test fixture, which comprises a base, two side support pieces, a first clamping assembly and an anti-instability assembly, the two side support pieces are oppositely arranged on the base, a composite material is arranged between the two side support pieces, and the anti-instability assembly comprises two first anti-instability pieces and two second anti-instability pieces. Each first anti-instability piece comprises two separated first abutting parts, the distance between the two first abutting parts is larger than the damage range of the side face of the composite material, the two first anti-instability pieces are arranged on the two sides, in the second direction, of the composite material and close to the impacted side face of the composite material, and the second anti-instability pieces correspond to the first anti-instability pieces in a spaced mode; the first anti-instability piece and the second anti-instability piece are fixed to the two side supporting pieces respectively. The first clamping assembly can clamp the top of the composite material. The axial compression test clamp can be used for clamping a composite material subjected to side impact, and the problem that the accuracy of compression test data obtained after the composite material is subjected to side impact is not high is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to composite material structure test technical field especially, relates to a kind of axial compression test fixture. BACKGROUND

[0002] In the field such as aviation, aerospace, plate-shaped composite material is often used, for composite material plate, in the aircraft service process, it can cause the damage of plate-shaped composite material due to tool falling, foreign object, hail impact etc. Due to the characteristics of brittle mechanics of composite material, the impact of object has greater influence on composite material, especially low-speed impact, more easily cause large-scale destruction to the internal structure of composite material.

[0003] Composite material is impacted, and it will have influence on its compression residual strength, to verify the performance of composite material, after impacting composite material, compression test is carried out again, to more accurately judge the performance of composite material, but mostly impact on the surface of composite material, so the existing fixture for compression test is mostly designed for the composite material impacted on surface. To verify the performance of composite material from multiple aspects, the side of composite material is impacted, and then the composite material impacted on side is compressed to further judge the performance of composite material, but there is no compression test fixture for clamping composite material impacted on side on market, and only existing compression test fixture can be used to clamp the composite material impacted on side, so the accuracy of compression test data obtained after composite material is impacted on side is relatively low, which affects the judgment of the performance of composite material by staff.

[0004] Therefore, an axial compression test fixture is needed to solve the above technical problems. UTILITY MODEL CONTENT

[0005] The utility model aims at providing an axial compression test fixture, which is used to clamp the composite material impacted on side, and can solve the problem of relatively low accuracy of compression test data obtained after the composite material is impacted on side, which affects the judgment of the performance of composite material by staff.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] An axial compression test fixture is configured to fix the composite material impacted on side, and includes:

[0008] The base, two side supports, a first clamping assembly and an anti-instability assembly, the two side supports are oppositely arranged on the base, the composite material is arranged between the two side supports, the two side surfaces of the composite material along the first direction are respectively attached to the two side supports, the height of the composite material is greater than the height of the side supports, the anti-instability assembly comprises two first anti-instability members and two second anti-instability members, the first anti-instability member comprises two first abutting portions separated along the height direction, the second anti-instability member comprises a second abutting portion, the separation distance of the two first abutting portions is greater than the impact damage range of the side surface of the composite material, the two first anti-instability members are respectively arranged on the two sides of the composite material along the second direction and the first abutting portion abuts against the composite material, the first anti-instability member is arranged close to the side surface of the composite material impacted, the two second anti-instability members are respectively separated from the two first anti-instability members and the second abutting portion abuts against the composite material, the first anti-instability member and the second anti-instability member are respectively fixedly connected with the two side supports; the first clamping assembly can clamp the two side surfaces of the top of the composite material along the second direction.

[0009] As a preferred technical scheme of the axial compression test fixture, the second anti-instability member comprises two second abutting portions, the two second abutting portions are arranged apart along the height direction, and the separation distance of the two second abutting portions is less than the separation distance of the two first abutting portions.

[0010] As a preferred technical scheme of the axial compression test fixture, the side support comprises a first plate and a second plate perpendicular to each other, the second plate is connected with the base, the first plate is attached to the composite material, the second plate is provided with a second slot, and the second plate is connected with the base through a first fastener.

[0011] As a preferred technical scheme of the axial compression test fixture, the first plate comprises a main body and two side edge portions, the main body is connected perpendicularly with the second plate, the two side edge portions are respectively perpendicular to the two side surfaces of the main body along the second direction and are away from the second plate, the anti-instability assembly is arranged between the side edge portion and the composite material, and the axial compression test fixture further comprises a first limiting member which abuts against the anti-instability assembly after being arranged in the side edge portion.

[0012] As a preferred technical scheme of the axial compression test fixture, the first plate is provided with a first slot, the first anti-instability member and the second anti-instability member are both provided with a fixing hole, the first anti-instability member and the second anti-instability member are both connected with the corresponding first plate through a second fastener, and the second fastener is locked in the fixing hole after penetrating through the first slot.

[0013] The first plate and the second plate are provided with a reinforcing rib.

[0014] The first clamping assembly comprises a top cover, two first clamping plates, a second limiting piece and a third fastener.

[0015] The second clamping assembly is arranged on the base and can clamp two side surfaces of the composite material bottom along the second direction.

[0016] The second clamping assembly comprises two fixed plates, two second clamping plates and a third limiting piece.

[0017] The first abutting part is provided with a first cutting edge part, and the second abutting part is provided with a second cutting edge part.

[0018] The utility model discloses a shaft compression test fixture, which can clamp two side surfaces of a composite material along a first direction through two side supporting pieces, and can support two side surfaces of the composite material along a second direction through a first anti-instability piece and a second anti-instability piece.

[0019] The shaft compression test fixture can clamp two side surfaces of a composite material along a first direction through two side supporting pieces, and can support two side surfaces of the composite material along a second direction through a first anti-instability piece and a second anti-instability piece.BRIEF DESCRIPTION OF DRAWINGS BRIEF DESCRIPTION OF DRAWINGS

[0020] Fig. 1 is a structural schematic view of the shaft pressure test fixture provided by the utility model;

[0021] Fig. 2 is a structural schematic view of the first anti-instability piece of the shaft pressure test fixture provided by the utility model;

[0022] Fig. 3 is a structural schematic view of the second anti-instability piece of the shaft pressure test fixture provided by the utility model.

[0023] In the drawings:

[0024] 100, composite material;

[0025] 1, base;

[0026] 2, side support piece; 21, first plate piece; 211, main body part; 2111, first bar-shaped hole; 212, side edge part; 22, second plate piece; 221, second bar-shaped hole; 23, reinforcing rib;

[0027] 3, first clamping assembly; 31, top cover; 32, first clamping plate; 33, second limiting piece; 34, third fastener;

[0028] 4, anti-instability assembly; 41, first anti-instability piece; 411, first abutting part; 4111, first blade part; 42, second anti-instability piece; 421, second abutting part; 4211, second blade part; 422, third abutting part;

[0029] 5, first fastener; 6, first limiting piece; 7, second fastener;

[0030] 8, second clamping assembly; 81, fixed plate; 82, second clamping plate; 83, third limiting piece. DETAILED DESCRIPTION

[0031] The utility model will be further explained in detail below by combining with the drawings and embodiments. It can be understood that the specific embodiments described here are only used for explaining the utility model and not limiting the utility model. In addition, it needs to be explained that in order to facilitate the description, only the part related to the utility model is shown in the drawings and not all structures.

[0032] In the description of the utility model, unless another definite provision and limitation, the term "link", "connection", "fix" should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated;Can be mechanical connection, also can be electrical connection;Can be directly connected, also can pass through the indirect connection of intermediate medium, can be two elements internal communication or two element mutual action relation. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0033] In the utility model, unless another definite provision and limitation, the first feature is "on" or "under" the second feature can include the direct contact of the first and second features, also can include the contact of the first and second features not direct contact but through the contact between other features between them. Moreover, the first feature is "on", "above" and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or just indicates that the horizontal height of the first feature is higher than the second feature. The first feature is "under", "below" and "under" the second feature includes that the first feature is directly below and obliquely below the second feature, or just indicates that the horizontal height of the first feature is less than the second feature.

[0034] In the description of the embodiment, the orientation or position relationship of the terms "on", "under", "right", etc. is based on the orientation or position relationship shown in the drawing, only for the convenience of description and simplification operation, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" are only used to distinguish in the description, and have no special meaning.

[0035] As Figs. 1 to 3As shown, the embodiment provides an axial compression test fixture configured to fix the composite material 100 subjected to side impact, wherein the compression load of the composite material 100 is applied by a testing machine. The axial compression test fixture comprises a base 1, two side supports 2, a first clamping assembly 3 and an anti-instability assembly 4, wherein the two side supports 2 are oppositely arranged on the base 1, the composite material 100 is placed between the two side supports 2, and the two sides of the composite material 100 along the first direction are respectively attached to the two side supports 2, that is, the two side supports 2 clamp the two sides of the composite material 100 along the first direction. The height of the composite material 100 is greater than the height of the side support 2, so as to ensure that the composite material 100 has a certain compression space when the compression load is applied thereon. The anti-instability assembly 4 comprises two first anti-instability members 41 and two second anti-instability members 42. The first anti-instability member 41 comprises two spaced first abutting portions 411, and the second anti-instability member 42 comprises a second abutting portion 421. The spacing distance of the two first abutting portions 411 is greater than the impact damage range of the side of the composite material 100. The two first anti-instability members 41 are respectively arranged on the two sides of the composite material 100 along the second direction and abut against the composite material 100, and the first anti-instability member 41 is arranged close to the side of the composite material 100 subjected to impact. The two second anti-instability members 42 are respectively spaced from the two first anti-instability members 41 and the second abutting portion 421 abuts against the composite material 100, and the first anti-instability member 41 and the second anti-instability member 42 are respectively fixedly connected with the two side supports 2. The first clamping assembly 3 can clamp the two sides of the top of the composite material 100 along the second direction, not only supporting the two sides of the top of the composite material 100 along the second direction, but also transmitting the compression load applied by the testing machine to the composite material 100. In the embodiment, the first direction is the direction of the X axis, the second direction is the direction of the Y axis, and the first direction and the second direction are perpendicular to each other.

[0036] The shaft compression test fixture of the embodiment can clamp two sides of the composite material 100 along the first direction through the two side supporting members 2, and the first instability prevention member 41 and the second instability prevention member 42 can support two sides of the composite material 100 along the second direction. Under the joint action of the side supporting members 2 and the instability prevention assembly 4, the deformation of the composite material 100 under compression load can be reduced, the risk of instability of the composite material 100 can be reduced, and the accuracy of the compression test data of the composite material 100 can be improved. Since the distance between the two first abutting portions 411 is greater than the impact damage range of the composite material 100, and the first instability prevention member 41 is placed close to the side of the composite material 100 that is impacted, the first instability prevention member 41 supports the composite material 100 while avoiding the damaged area of the composite material 100 after being impacted. Therefore, when the composite material 100 is subjected to compression load, the expansion speed and extent of the damage range will not be slowed down and reduced due to the influence of the first instability prevention member 41, and the accuracy of the compression test data of the side-impacted composite material 100 is ensured.

[0037] In the embodiment, the second instability prevention member 42 includes two second abutting portions 421, which are arranged apart from each other, and the distance between the two second abutting portions 421 is less than the distance between the two first abutting portions 411. In actual assembly, the second instability prevention member 42 is farther away from the impact damage area of the side of the composite material 100 than the first instability prevention member 41. Therefore, the distance between the two second abutting portions 421 can be less than the distance between the two first abutting portions 411, so that the second abutting portion 421 can be in contact with a larger area of the composite material 100, while avoiding affecting the expansion range and speed of the impact damage area of the composite material 100 under compression. Preferably, the second instability prevention member 42 further includes a third abutting portion 422, which is arranged apart from the second abutting portion 421 along the height direction of the second instability prevention member 42. The arrangement of the third abutting portion 422 can enable the second instability prevention member 42 to act on the composite material 100 in a larger range, further reducing the risk of instability of the composite material 100.

[0038] Exemplarily, the side support 2 comprises a first plate 21 and a second plate 22 which are perpendicular to each other, the second plate 22 is connected with the base plate, and the first plate 21 is attached to the composite material 100, so that the two side supports 2 can be stably connected with the base 1 while clamping the composite material 100. The second plate 22 is provided with a second slot hole 221, and the second plate 22 is connected with the base 1 through the first fastener 5, and the first fastener 5 is locked in the base 1 after passing through the second slot hole 221. Specifically, a mounting hole is provided on the base 1, and when the side support 2 is installed, different positions of the slot hole are opposite to the mounting hole, and then the first fastener 5 is locked, so that the distance between the two side supports 2 can be adjusted, and the two side supports 2 can clamp composite materials 100 of different specifications, thereby improving the versatility of the axial compression test fixture. The mounting hole is provided with an internal thread, and the first fastener 5 is provided with an external thread, and after the first fastener 5 passes through the second slot hole 221, the external thread and the internal thread of the mounting hole are screwed with each other to be locked in the base 1. In the embodiment, the first fastener 5 can be a bolt.

[0039] As preferred, the base 1 is provided with a guide groove along the first direction, and a protruding column is provided on the bottom surface of the side support 2, and the protruding column is placed in the guide groove. When the position of the side support 2 is adjusted relative to the base 1, the side support 2 moves along the guide groove, preventing the problem of deviation when adjusting the side support 2, and further improving the stability of the two side supports 2 clamping the composite material 100.

[0040] Further, the first plate 21 comprises a main body 211 and two side edge portions 212, the main body 211 is connected with the second plate 22 perpendicularly, and the two side edge portions 212 are respectively connected with the two sides of the main body 211 along the second direction, and the anti-buckling assembly 4 is arranged between the side edge portion 212 and the composite material 100. The first plate 21 is designed as a structure of the main body 211 and the side edge portion 212, which is more convenient for the reasonable placement of the anti-buckling assembly 4, and improves the rationality of the design of the axial compression test fixture. The axial compression test fixture further comprises a first limiting piece 6, the first limiting piece 6 is arranged in the side edge portion 212 and abuts against the anti-buckling assembly 4, and the first limiting piece 6 can provide a radial force to the composite material 100 through the anti-buckling assembly 4, thereby further reducing the risk of instability of the composite material 100 under compression load on the basis of the anti-buckling assembly 4, and further improving the accuracy of the compression test data of the composite material 100. Further, the first limiting piece 6 is provided with a plurality of limiting holes which are arranged at intervals along the height direction, and the plurality of first limiting pieces 6 are arranged one by one with the plurality of limiting holes, thereby providing a radial force to the composite material 100 along the height direction, and further reducing the risk of instability of the composite material 100. The limiting hole and the first limiting piece 6 are threadedly connected to ensure that the first limiting piece 6 can stably abut against the anti-buckling assembly 4. Specifically, the first limiting piece 6 can be a bolt.

[0041] Further, the first plate member 21 is provided with a first strip-shaped hole 2111, and the first anti-buckling member 41 and the second anti-buckling member 42 are both provided with a fixing hole, wherein the first anti-buckling member 41 and the second anti-buckling member 42 are both connected with the corresponding first plate member 21 through the second fastener 7, and the second fastener 7 is locked in the fixing hole after passing through the first strip-shaped hole 2111. By locking the fixing hole and the first strip-shaped hole 2111 at different positions, the distance between the two first anti-buckling members 41 and the distance between the two second anti-buckling members 42 can be adjusted, so that the axial compression test fixture can fix composite materials 100 of different thicknesses, further improving the versatility of the axial compression test fixture. The second fastener 7 is threadedly connected with the fixing hole after passing through the first strip-shaped hole 2111, and the second fastener 7 can be selected as a bolt. Further, the first strip-shaped hole 2111 is provided with a plurality of first strip-shaped holes 2111, which are arranged at intervals along the height direction of the side support member 2, so that the first anti-buckling member 41 and the second anti-buckling member 42 can be multi-point fixed with the two side support members 2, and the first anti-buckling member 41 and the second anti-buckling member 42 can be stably connected with the two side support members 2.

[0042] As preferred, a reinforcing rib 23 is arranged between the first plate member 21 and the second plate member 22, which improves the stability of the structure of the side support member 2, and further enables the two side support members 2 to more stably clamp the composite material 100.

[0043] Exemplarily, the first clamping assembly 3 comprises a top cover 31, two first clamping plates 32, a second limiting member 33 and a third fastener 34, wherein the top cover 31 is connected with the testing machine, the two first clamping plates 32 are arranged at intervals in the accommodating groove along the second direction, and the third fastener 34 is used to connect the first clamping plate 32 and the top cover 31. In actual assembly, the top cover 31 is arranged on the top of the composite material 100, and the composite material 100 is arranged between the two first clamping plates 32, so as to reduce the risk of instability of the top of the composite material 100. The distance between the two first clamping plates 32 can be adjusted, so as to adapt to composite materials 100 of different thicknesses and ensure the versatility of the first clamping assembly 3. The second limiting member 33 is arranged on the side surface of the top cover 31 and abuts against the first clamping plate 32, and the second limiting member 33 can provide a radial force to the top of the composite material 100 through the first clamping plate 32, so that the first clamping assembly 3 can more stably clamp the composite material 100 and make it more convenient for the testing machine to apply a compression load to the composite material 100. Specifically, a first waist-shaped hole is arranged on the upper end surface of the top cover 31 along the second direction, a first mounting hole is arranged on the first clamping plate 32, and the distance between the two first clamping plates 32 can be adjusted by locking the first mounting hole and the first waist-shaped hole at different positions through the third fastener 34. The third fastener 34 can be selected as a bolt.

[0044] In the embodiment, the axial compression clamp of the composite material 100 further comprises a second clamping assembly 8 arranged on the base 1, and the second clamping assembly 8 can clamp two sides of the bottom of the composite material 100 in the second direction. The second clamping assembly 8 can ensure the stability of the bottom of the composite material 100, so that the composite material 100 can be clamped more stably between the two side supporting pieces 2. For example, the second clamping assembly 8 comprises two fixed plates 81, two second clamping plates 82 and a third limiting piece 83. The two fixed plates 81 are respectively arranged at two side edges of the base 1 in the second direction and are connected with the base 1, specifically fixedly connected. The two second clamping plates 82 are oppositely arranged on the base 1 in the second direction and correspond to the two fixed plates 81. The bottom of the composite material 100 is clamped between the two second clamping plates 82, so as to prevent the composite material 100 from tilting during compression and ensure the axial compression stress of the composite material 100. The third limiting piece 83 penetrates through the fixed plate 81 and abuts against the second clamping plate 82, so as to provide a radial force to the bottom of the composite material 100 through the second clamping plate 82, and further improve the stability of the second clamping assembly 8 in clamping the bottom of the composite material 100. A second waist-shaped hole in the second direction is arranged on the second clamping plate 82, and a second mounting hole is arranged on the base 1 in correspondence. Different regions of the second waist-shaped hole are opposite to the second mounting hole, and the two are locked by bolts, so as to adjust the distance between the two second clamping plates 82 on the base 1, and adapt to composite materials 100 of different thicknesses.

[0045] In the embodiment, the first abutting portion 411 is provided with a first blade portion 4111, and the second abutting portion 421 is provided with a second blade portion 4211. The first blade portion 4111 and the second blade portion 4211 are both in abutment with the composite material 100. In this way, the force acting on the composite material 100 by the first anti-instability piece 41 and the second anti-instability piece 42 is more concentrated, the friction between the composite material 100 and the first anti-instability piece 41 and the second anti-instability piece 42 during compression is reduced, the influence of other external forces on the compression test result of the composite material 100 is reduced, and the accuracy of the compression test data of the composite material 100 is further improved.

[0046] Obviously, the above embodiments of the utility model are only examples for clearly illustrating the utility model, and are not a limitation on the embodiments of the utility model. For ordinary skilled in the art, various obvious changes, re-adjustment and replacement can be made without departing from the protection scope of the utility model. Here, it is not necessary and impossible to enumerate all the embodiments. Any modification, equivalent replacement and improvement made within the spirit and principle of the utility model shall be included in the protection scope of the utility model claim.

Claims

1. A axial compression test jig configured to secure a composite material (100) subjected to side impact, characterized by, The application relates to a composite material stabilizing device, which comprises a base (1), two side supports (2), a first clamping assembly (3) and an anti-instability assembly (4), the two side supports (2) are oppositely arranged on the base (1), a composite material (100) is arranged between the two side supports (2), the two side surfaces of the composite material (100) along a first direction are respectively attached to the two side supports (2), the height of the composite material (100) is greater than the height of the side supports (2), the anti-instability assembly (4) comprises two first anti-instability members (41) and two second anti-instability members (42), the first anti-instability member (41) comprises two first abutting portions (411) which are spaced apart along the height direction, the second anti-instability member (42) comprises a second abutting portion (421), the spacing distance between the two first abutting portions (411) is greater than the impact damage range of the side surface of the composite material (100), the two first anti-instability members (41) are respectively arranged on the two sides of the composite material (100) along a second direction and the first abutting portions (411) abut against the composite material (100), the first anti-instability member (41) is close to the side surface of the composite material (100) which is impacted, the two second anti-instability members (42) are respectively spaced apart from the two first anti-instability members (41) and the second abutting portion (421) abuts against the composite material (100), the first anti-instability member (41) and the second anti-instability member (42) are respectively fixedly connected with the two side supports (2), and the first clamping assembly (3) can clamp the two side surfaces of the top of the composite material (100) along the second direction. The second anti-instability member (42) comprises two second abutting portions (421), the two second abutting portions (421) are arranged to be spaced apart along the height direction, and the spacing distance between the two second abutting portions (421) is smaller than the spacing distance between the two first abutting portions (411).

2. The axial compression test fixture of claim 1, wherein, The side support (2) comprises a first plate (21) and a second plate (22) which are perpendicular to each other, the second plate (22) is connected with the base (1), the first plate (21) is attached to the composite material (100), the second plate (22) is provided with a second strip-shaped hole (221), the second plate (22) is connected with the base (1) through a first fastener (5), and the first fastener (5) is locked on the base (1) after penetrating through the second strip-shaped hole (221).

3. The axial compression test fixture of claim 1, wherein, ​ 4. The axial compression test fixture of claim 3, wherein, The first plate member (21) comprises a main body part (211) and two side edge parts (212), the main body part (211) is connected perpendicularly with the second plate member (22), the two side edge parts (212) are respectively connected perpendicularly with two sides of the main body part (211) along the second direction and are directed away from the second plate member (22), the anti-instability component (4) is arranged between the side edge part (212) and the composite material (100), the axial compression test fixture further comprises a first limiting member (6), the first limiting member (6) is arranged through the side edge part (212) and abuts against the anti-instability component (4).

5. The axial compression test fixture of claim 4, wherein, The first plate member (21) is provided with a first strip-shaped hole (2111), the first anti-instability member (41) and the second anti-instability member (42) are both provided with fixing holes correspondingly, the first anti-instability member (41) and the second anti-instability member (42) are both connected with the corresponding first plate member (21) through a second fastener (7), the second fastener (7) is locked in the fixing hole after passing through the first strip-shaped hole (2111).

6. The axial compression test fixture of claim 3, wherein, The first plate member (21) and the second plate member (22) are provided with a reinforcing rib (23) therebetween.

7. The axial compression test fixture of claim 1, wherein, The first clamping assembly (3) comprises a top cover (31), two first clamping plates (32), a second limiting member (33) and a third fastener (34), the top cover (31) has a containing groove, the two first clamping plates (32) are arranged in the containing groove along the second direction, the third fastener (34) is used for connecting the first clamping plate (32) and the top cover (31), the distance between the two first clamping plates (32) can be adjusted, and the second limiting member (33) is arranged through the side of the top cover (31) and abuts against the first clamping plate (32).

8. The axial compression test fixture of claim 1, wherein, The axial compression test fixture further comprises a second clamping assembly (8), the second clamping assembly (8) is arranged on the base (1), and the second clamping assembly (8) can clamp two sides of the bottom of the composite material (100) along the second direction.

9. The axial compression test fixture of claim 8, wherein, The second clamping assembly (8) comprises two fixed plates (81), two second clamping plates (82) and a third limiting member (83), the two fixed plates (81) are respectively located at two side edges of the base (1) along the second direction and are connected with the base (1), the two second clamping plates (82) are arranged oppositely on the base (1) along the second direction and correspond to the two fixed plates (81), and the third limiting member (83) is arranged through the fixed plate (81) and abuts against the second clamping plate (82).

10. The axial compression test fixture of claim 1, wherein, The first abutting part (411) is provided with a first blade part (4111), the second abutting part (421) is provided with a second blade part (4211), and the first blade part (4111) and the second blade part (4211) both abut against the composite material (100).

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