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열분석시험을 통한 항공기 복합재료 부품의 수리 시 반복경화에 따른 물성변화 측정에 관한 연구
엄수현(S-H. Eum),이상언(S-U. Lee),한중원(J-W. Han),김국진(K-J. Kim),김영식(Y-S. Kim),김윤해(Y-H. Kim) 대한기계학회 2002 대한기계학회 춘추학술대회 Vol.2002 No.10
Recently, composites have been widely applied in the sporting goods, automobile, aerospace industry. As the use of advanced composites increase, specific techniques have been developed to repair damaged composite structures. In order to repair the damaged part, it is required that the material in the damaged area be removed first by utilizing the proper method, and prepreg be laid up in the area and cured under vacuum using the vacuum bagging materials. In curing process, either in an oven or autoclave is to be delamination can be occurred in the sound areas during and/or after the exposure to the elevated curing temperature in case that the repair process is repeated. Therefore, this study was conducted to evaluate the degree of degradation of properties of the cured parts and how it affects to the delamination phenomenon between laminated skin and honeycomb core.