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Ultrasonic wave focusing on flexible array sensors in weld detection
Author(s): Zhenying Xu; Yuanxia Wang; Han Du; Wei Fan
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Paper Abstract

A crucial problem of applying ultrasonic guided wave flexible array transducer to weld detection is signal focusing. Thus, this paper proposes two focusing methods applied for array sensor in ultrasonic guided wave weld testing. By exciting every row of the array sensor simultaneously or not, we evaluate two methods on signal focusing. By comparing waveform and maximum amplitudes of focused waves generated by different number of rows in the transducer array, we find out that two proposed methods both have their advantages in guided wave focusing and indicate where these two methods should be used in real applications respectively. In results, the numerical simulations show that the guided wave focused by simultaneous excitation depends on the transducer array dimension, while the guided wave is independently focused by asynchronous excitation.

Paper Details

Date Published: 13 November 2019
PDF: 8 pages
Proc. SPIE 11343, Ninth International Symposium on Precision Mechanical Measurements, 113431K (13 November 2019); doi: 10.1117/12.2548742
Show Author Affiliations
Zhenying Xu, Jiangsu Univ. (China)
Yuanxia Wang, Jiangsu Univ. (China)
Han Du, Jiangsu Univ. (China)
Wei Fan, Jiangsu Univ. (China)


Published in SPIE Proceedings Vol. 11343:
Ninth International Symposium on Precision Mechanical Measurements
Liandong Yu, Editor(s)

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