The purpose of this paper is to detect the fiber stiffness degradation of GFRP plates from natural frequency response data. The combined finite element analysis using ABAQUS program and the inverse algorithm described in this paper may allow us not only to detect the deteriorated elements from the mirco mechanical point of view. Several numerical results show that the proposed system is computationally efficient in identifying fiber stiffness degradation for complex structures such as composites.

• 김규동(안동대학교 토목공학과, 박사과정) | Kim, Gyu-Dong
• 사봉권((주)예성 엔지니어링 사장) | Sa, Bong-Kwon
• 우영호(명지전문대학교 토목공학과 부교수) | Woo, Young-Ho
• 이상열(안동대학교 토목공학과 부교수, 공학박사) | Lee, Sang-Youl 교신저자