원통형 쉘에 대한 구조손상규명 기법

초록

This paper presents a feasibility study on a structural damage identification method (SDIM) developed herein for cylindrical shells. The SDIM is derived directly from the governing differential equations of motion of the damaged cylindrical shell. In contrast with most of existing modal parameters-based SDIMs, which requires only modal parameters measured in both intact and damaged states, the pre-sent SDIM utilizes the FRF-data in the damaged state instead of the modal parameters in the damaged state. The feasibility of the present SDIM is numerically tested through some illustrative examples, taking into account the random noises in FRF-data.