A MULTI-POINT ELASTIC WAVE EXCITATION AND RECEPTION METHOD FOR DAMAGE DETECTION - NUMERICAL VERIFICATION
A multi-point elastic wave excitation and reception method is introduced to detect damages (crack and deterioration). This method does not require any baseline signal to distinguish the damages although there is a certain limitation for its application. For verification of the method, explicit dynamic analyses using finite element software, ANSYS LSDYNA, were carried out. The target structures are a 3-dimensional concrete beam with non-reflecting boundary conditions and 2-D plane adhesively-bonded single lap aluminum joint. It is shown that crack and deterioration were successfully detected and their severities were well quantified through the numerical simulations. The introduced baseline-free elastic wave method is useful for developing a nondestructive testing scheme.
multi-point elastic wave ezcitation and reception method damage detection numerical verification concrete beam adhesively-bonded single lap aluminum joint
Won-Bae Na Jeong-Tae Kim In-Cheol Lee
Department of Ocean Engineering, Pukyong National University, Busan 608-737, Korea
国际会议
广州
英文
1190-1195
2009-11-28（万方平台首次上网日期，不代表论文的发表时间）