Test and analysis of electroghermal behaviour and mechanical properties on carbon fiber reinforced polymer composite materials

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Test and analysis of electroghermal behaviour and mechanical properties on carbon fiber reinforced polymer composite materials

WANG Zhi-ping,LIANG Ji-yong,ZHANG Guo-shang,HAN Zhi-yong,LI Na

(Tianjin Key Laboratory for Civil Aircraft Airworthiness and Maintenance,CAUC,Tianjin 300300,China)

Received:2012-11-12 Revised:2012-11-30 Online:2013-02-23 Published:2014-05-23

Abstract

Abstract:

The self-devised electroghermal damage test device was employed to test the current and thermal field of CFRP samples. Then, the relationship between electroghermal temperature and current intensity was gained,which is liner relationship and the temperature increases with the increase of current intensity. The tests of the mechanical properties of CFRP samples initially reveal that with the increase of electroghermal temperature,the tensile strength of CFRP samples increases first then turns stable and at last decreases, and, the Poisson's ratio of the CFRP samples decreases first then stable and lastly decrease. In addition, the unstable and excessive contact resistance between CFRP samples and electrode was successively solved through optimization of copper electroplating process and the precise control of pretightening force. The contact resistance can be controlled below 0.39Ωand it has a good repeatability.

Key words: CFRP, electroghermal damage, contact resistance, mechanical properties

CLC Number:

TB332

WANG Zhi-ping,LIANG Ji-yong,ZHANG Guo-shang,HAN Zhi-yong,LI Na. Test and analysis of electroghermal behaviour and mechanical properties on carbon fiber reinforced polymer composite materials[J]. .

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