THE PRINCIPLE OF DETECTION AND LOCATION OF A TARGET IN LAYERED MEDIA CONTAINING SOLIDS BY SNAPSHOT TR-RTM MIXED METHOD

摘要：

　　Layered structures are widely used,and their safety in service will be severely affected by the existence of defects.The snapshot time reversal and reverse time migration mixed method with longitudinal wave is adopted to detect and locate the target or defect in layered media containing solids.A mountain-like acoustic field distribution is constructed through the numerical simulations,and the location of the summit is that of the target,which realizes the detection and location of the target in layered media containing solids.In addition,this method can obtain a better signal-to-interference ratio by suppressing the interference of the interface reflection.

关键词： Ultrasonic detection Time reversal Reverse time migration Solid Layered media

作者: Hong-juan YANG Jian LI Jun MA Jun-hong LI Wen WANG Cheng-hao WANG

作者单位: Institute of Acoustics, Chinese Academy of Sciences, Beijing, 100190, P.R.China;University of Chines School of Electronic and Electrical Engineering, Wuhan Textile University, Wuhan, 430200, P.R.China; Institute of Acoustics, Chinese Academy of Sciences, Beijing, 100190, P.R.China

会议类型: 国际会议

会议名称: The 2019 Symposium on Piezoelectricity,Acoustic Waves and Device Applications(2019(第14届)全国压电和声波理论及器件技术研讨会)

会议地点: 石家庄

会议语种:英文

页码: 196-199

在线出版日期: 2019-11-01（万方平台首次上网日期，不代表论文的发表时间）