1321 Compressive fracture monitoring of CFRP by electrical resistance change method
Details
For Carbon Fiber Reinforced Plastic (CFRP), electrical conductivity of carbon fiber can be used as a sensor for damage detection. The change of electrical resistance of the CFRP structure has been studied as a self-sensing system for monitoring damages. Todoroki et al. reported that the electrical resistance change method successfully monitored various damages like matrix cracking, fiber breakage and delamination in CFRP laminates. There are, however, no reports that the electrical resistance change method successfully monitored compressive fracture of CFRP. Electrical resistance change under compressive load is measured here by three points bending test. The specimen for this was a beam that GFRP is sandwiched between two unidirectional CFRP laminate. As a result, it can be revealed that electrical resistance change shows decrease under elastic area and rapid increase after microbuckling.
