Detection of Delamination in Laminated Plates Using A0 Mode of Acoustic Emission Waves

摘要：

In this study,a simple method was presented to evaluate delamination in laminated plates.The characteristics of plate waves were investigated by using a formulation including stiffness coupling.For A0 mode,the wave velocity of laminated plates was largely affected by plate thickness,stack sequence and frequency.The acoustic emission (AE) signals were generated by pencil lead breaks,and these waves propagating in laminated plates with delamination were detected by the broadband width sensors.By the wavelet transform,the arrival time of AE waves of a certain frequency can be derived exactly and the wave velocity of A0 mode can be exactly calculated.The length of delamination in the laminated plates was derived by the difference of the arrival times.

作者: Chao Du Toshiaki Natsuki Qingqing Ni

作者单位: Interdisciplinary Graduate School of Science & Technology,Shinshu University,Ueda City,Nagano,Japan Dept. of Functional Machinery & Mechanics,Shinshu University,Ueda City,Nagano,Japan

会议类型: 国际会议

会议名称: 2008年先进纺织材料暨加工技术国际学术会议

会议地点: 杭州

会议语种:英文

在线出版日期: 2008-10-15（万方平台首次上网日期，不代表论文的发表时间）