Investigation of interfacial properties using compact tension tests of glass cloth reinforced vinylester composite - Fractographic approach

摘要

Acid stress corrosion behavior of E or C glass cloth reinforced vinyl ester resin has been investigated using CT specimen. Basically E glass fibers easily degrade in acid solution, whereas C glass fibers are unti-corrosive fibers. It is expected that interfacial problems become an important issue in the case of C glass fiber reinforced composite particularly in long time service. On the fracture surface of CT specimen after immersion in acid solution the cracks initiating from inside of fiber bundles were often observed in our previous paper. In this paper modified CT specimen in which warp fiber bundle were removed near crack tip in order to make observation of cracks from inside of weft fiber bundle easier.