Carbon fibres: sensor components for smart materials

摘要: Recently, smart composites have appeared as new materials. But, these materials require the integration of functional elements within composite structure which generates some problems. This paper demonstrates how carbon fibers are not only reinforcement but also sensor to detect in-situ damages in CFRP laminates. (+/- 45 degree(s)) laminates were subjected monotonic and creep tests under three-point bending conditions. The monitoring electrical resistance variation AE activity allowed detection identification, at different stages, various types damage mechanisms (not fiber fractures matrix cracks, debondings delaminations).