一方向CFRP積層板のモードI層間破壊挙動の解析 : 第2報,層間変形に関する考察

抄録

Double cantilever beam (DCB) specimens were used to study mode I interlaminar fracture of unidirectional carbon fiber/epoxy composites. An improved analytical model was introduced to analyze the crack opening displacement (COD) of the DCB specimen. Theoretical values of COD were compared with those measured by moire interferometry to evaluate an effective interlaminar tensile modulus and strain in the vicinity of a crack tip. The results showed that the modulus plays an important role in increasing the values of COD, and that there is a correlation between the modulus and the strain.