On the question of carbon fiber reinforced plastics (CFRP) test specimen flaws

Stolyankov Yu.V., Iskhodzhanova I.V., Antyufeeva N.V.
UDC
620.165.79:678.8
DOI
10.18577/2307-6046-2014-0-10-10-10
Article PDF (Russian) (622.17 KB)
How to cite
Stolyankov Yu.V., Iskhodzhanova I.V., Antyufeeva N.V. On the question of carbon fiber reinforced plastics (CFRP) test specimen flaws // Proceedings of VIAM. 2014. No. 10. DOI: 10.18577/2307-6046-2014-0-10-10-10. URL: https://test.viam.ru/en/journal/2014/10/10
Abstract

For strength characteristics and properties evaluation test of composite polymer ma-terials (PCM), i.e. CFRP on the basis of glue epoxy resin and carbon fillers, it is neces-sary to make test specimen first. As a rule test specimen make from CFRP plates pro-duced by means of some molding technique. Cutting tool machining is the most wide-spread method among various existing methods of test specimen production. When studying the cutting technology influence on specimen surface quality some flaws have been reviled in the form of cleavage in addition to cracks and other flaws, which are re-sponsible for test specimen surface quality, and, therefore, the CFRP characteristics. Test specimen flaws have been described with their quantitative estimation. Flaws quantitative estimation technique has been worked out by means of computerized quantitative optical metallographic analysis method.

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