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A test device for compression test of thermoplastic composite sheet after impact

A composite material sheet and test device technology, which is applied in the direction of using a single impact force to test the material strength, using a stable tension/pressure test to test the material strength, measuring devices, etc. , the effect of reducing the impact and reducing the cost of testing

Active Publication Date: 2021-08-03
SHANGHAI JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The above two reasons lead to the failure of the traditional post-impact compression test method to obtain the actual desired material strength value, so the test equipment needs to be redesigned

Method used

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  • A test device for compression test of thermoplastic composite sheet after impact
  • A test device for compression test of thermoplastic composite sheet after impact

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Embodiment

[0031] The invention relates to a test device for compression test of thermoplastic composite sheet after impact. The device is mainly composed of upper and lower parts which are separated and identical. The two parts are arranged symmetrically up and down during actual work. Each part includes a coupling piece 1 , a base 2 and a baffle part, and the baffle part includes a side base 3 , an inner side baffle 6 and an anti-buckling plate 5 . The couplings 1 of the upper and lower two identical parts are connected with the universal testing machine in the form of a top coupling and a bottom coupling during actual operation.

[0032] This embodiment is described with the upper portion. Such as figure 1 As shown, the connecting piece 1 is arranged on the top of the base 2, and is connected with the base 2 through threads, and is used for connecting the universal testing machine. Two anti-buckling plates 5 are connected to the bottom of the base 2 and are respectively arranged at...

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Abstract

The invention relates to a test device for compression test of a thermoplastic composite material sheet after impact, which comprises two specimen clamping parts of the same structure separated from the upper and lower and arranged symmetrically, each of the specimen clamping parts includes a base (2), the connecting piece (1) and the baffle part respectively arranged at both ends of the base (2), the said baffle part clamps the thermoplastic composite material test piece, and the connecting piece (1) of the two test piece clamping parts is in the In actual operation, it is connected with the universal testing machine in the form of a top connector and a bottom connector. Compared with the prior art, the invention has the advantages of preventing the specimen from buckling when it is compressed, ensuring that the damage area left after the impact of the specimen is not changed, reducing the influence of the anti-buckling plate on the test result, and reducing the test cost.

Description

technical field [0001] The invention relates to the technical field of compression testing of composite materials, in particular to a testing device for compression testing of thermoplastic composite material sheets after impact. Background technique [0002] Due to their high specific strength and specific stiffness, composite materials are widely used in the aviation field. However, the strength of traditional thermosetting composite materials decreases significantly after being subjected to impact loads. Therefore, in recent years, thermoplastic composite materials have attracted much attention because of their better impact resistance. [0003] The impact resistance of composite materials can be measured by the residual compressive strength test after the material is impacted. At present, the traditional post-punching test method of composite materials (such as ASTM D7137) is designed for thermosetting composite laminates with a thickness of 4 to 6 mm. When , it often ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/30G01N3/08G01N3/02
CPCG01N3/02G01N3/08G01N3/30
Inventor 陆陶冶陈秀华杨亚雄
Owner SHANGHAI JIAOTONG UNIV
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