RESEARCH ON DETECTION OF WELD DEFECTS WITH MULTI-WAVE TOTAL FOCUSING METHOD

摘要：

　　In the modern industry,welded structures are widely used,especially in the aerospace and nuclear industries.In order to prevent accidents,defect detection must be performed.Due to the high anisotropy and non-uniformity in the soldered area,the signal-to-noise ratio(SNR) of the imaging defect is low and the image quality is poor.Multi-wave total focusing method(multi-wave TFM) detects and locates target or defect in the weld area,which increases the focusing energy at the target or defect and thus improves the sensitivity of the detection.The simulation and experimental results show that the multi-wave TFM can more accurately locate defects and improve detection sensitivity when detecting defects in the welding area compared with total focus method (TFM).

关键词： Weld defect Ultrasonic Testing Multi-wave TFM Sensitivity

作者: Ping ZHANG Shou-guo YAN Juan HUANG Bi-xing ZHANG

作者单位: State Key Laboratory of Acoustics, Institute of Acoustics, Chinese Academy of Sciences, Beijing 1001 State Key Laboratory of Acoustics, Institute of Acoustics, Chinese Academy of Sciences, Beijing 1001

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: 378-382

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）