The object of this study is to find out the relationship between degradation of FRP and their micrographic structure in the hot/ wet environments. In this study, carbon/ epoxy and glass/ epoxy FRP specimens were manufactured and the manufactured condi...
The object of this study is to find out the relationship between degradation of FRP and their micrographic structure in the hot/ wet environments. In this study, carbon/ epoxy and glass/ epoxy FRP specimens were manufactured and the manufactured conditions of two types of specimens were same. The manufactured specimens were immersed in 90℃ water bath during 50 days and moisture contents, tensile strength were periodically monitored. Moreover, the micrographic structure and fractographic were observed at the same term. As a result, the degradation of FRP specimens were directly influenced their pull-out and swelling phase in the moisture environments. Moreover, it was thought that the cracks and their prepagations in the specimens played a important part in their degradation by moisture absorbtion.