Time Reversal and Cross-Correlation Analysis for Damage Detection in Plates Using Lamb waves
The paper mainly presents the time reversal theory and cross-correlation algorithm to focalize the Lamb wave scattered signals caused by the damage. Time reversal theory has been developed to improve the detection ability of Lamb waves. Cross-correlation of scattered signal envelope with excitation signal envelope is used for damage imaging. Experiments are carried out on an aluminium plate using a transducer network consisting of four identical piezoelectric transducers as actuators and as well sensors for excitation and measurement of Lamb waves. The results show that this method is able to accurately predict damage location and provides an estimation of the possible area even for damage close to one of the transducers or even slightly outside the transducer network.
Zhang Haiyan Cao Yaping Yu Jianbo Chen Xianhua
School of Communication and Information Engineering, Shanghai University, Shanghai 200072
国际会议
上海
英文
1516-1520
2010-10-20（万方平台首次上网日期，不代表论文的发表时间）