電気抵抗の残留変化の測定によるCFGFRP複合材料の破壊予知

概要

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To measure residual electrical resistance during and after straining was found to be a promising method for foreseeing the fracture of the CFGFRP (carbon fiberglass fiber reinforced plastics) composites containing carbon fiber bundles. On loading, the electrical resistance of the CFGFRP composites increased non-linearly with increasing strain. Permanent, residual electrical resistance was reproducibly observed even after the removal of load, and the change was dependent on the maximum strain applied. Two kinds of PAN-based high strength carbon fiber and PAN-based high modulus carbon fiber were evaluated for their suitability for foreseeing the fracture of the CFGFRP composites. The former showed a larger residual electrical resistance than the latter.
社団法人日本セラミックス協会の論文
1992-04-01