2017 年 17 巻 1 号 p. 27-33
In this study, the fracture processes of carbon fiber reinforced thermoplastic polyimide (CFRPI) were investigated by using Acoustic Emission (AE) method during tensile tests. In the case of unidirectional composites, fracture processes of carbon fiber reinforced thermosetting epoxy (CFREP) and CFRPI were compared to understand the difference of the fracture processes between these composites. The frequency properties of AE waves that were detected during tests were correlated to the fracture types. In the case of cross-ply composites, the fracture processes of [0/90]6s and [90/0]6s were investigated with the distinguish the type of fracture by frequency responses.
