다양한 열습환경하에서 최외각층 변화에 따른 CFRP 모자형 부재의 압궤특성

Currently, CFRP composites are rapidly replacing steel plates, as they are lighter,stronger, and more elastic; however, they are poorly suited to hygrothermal andimpact-collapsed environments because moisture can alter their moleculearrangement and chemical properties. In this study, environments areexperimentally simulated in order to investigate changes in the moistureabsorption inside a CFRP composite and to determine its weakest point. Moreover, changes in the moisture absorption ratio at temperatures of 60°C and80°C are studied and compared in order to understand how changes intemperature affect moisture absorption inside CFRP composites. Results showthat moisture absorption leads to a strength reduction of around 50%. In addition,the moisture absorption rate inside CFRP composites is shown to change rapidlywith increasing temperature. Accordingly, it showed that the change in matrixalso has a weak point. KCI Citation Count: 0