A PIEZOELECTRIC TRANSDUCER FOR WELD DEFEC DETECTION BASED ON FIRST-ORDER SHEAR HORIZONTAL (SH1)MODE
Ultrasonic guided wave is a new non-destructive evaluation (NDE) method since it offers the potential to quickly inspect defects along long length of welds.During the mode study,a shear horizontal (SH) mode has been discovered,which is particularly attractive for NDT as it is non-leaky and almost non-dispersive.However,rare weld guided transducers have been developed so far,let alone used for wide commercialization.This paper develops a new piezoelectric transducer based on the SH1 mode at high frequency.Experiments have been carried out to validate its performance,including mode verification,energy attenuation calculation and defect detection.The results show that the transducer can work effectively and detect defects with localization errors under 3.5％,which shows great value for further theoretical study as well as engineering applications.
Ultrasonic guided wave NDE SH1 mode Piezoelectric transducer
Zhen-ying XU Hong HONG Huan LIU Yun WANG
School of Mechanical Engineering, Jiangsu University, Zhenjiang, 212013, P.R.China
国际会议
The 2015 Symposium on Piezoelectricity,Acoustic Waves and Device Applications(2015全国压电和声波理论及器件技术研讨会)
济南
英文
251-255
2015-10-30（万方平台首次上网日期，不代表论文的发表时间）