Numerical simulation of scattered waves from flaws for ultrasonic array transducer

被引：0
|
作者：
Hirose, S.
Kono, N.
Nakahata, K.
机构：
[1] Tokyo Inst Technol, Dept Mech & Environm Informat, Meguro Ku, Tokyo 1528552, Japan
[2] Hitachi Ltd, Power & Ind Syst R&D Lab, Hitachi, Ibaraki 3191221, Japan
[3] Ehime Univ, Dept Civil & Environm Engn, Matsuyama, Ehime 7908577, Japan
来源：
Review of Progress in Quantitative Nondestructive Evaluation, Vols 26A and 26B | 2007年 / 894卷
关键词：
ultrasonics; phased array transducer; simulation; fast multipole BEM;
D O I：
暂无
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
To enhance the detectability in the phased array UT, it is essential to have well knowledge on the characteristics of ultrasonic waves from array transducers. This paper proposes a mathematical model of the array transducer and a simulation tool to predict the flaw echoes. The modeling of an array transducer is based on the Rayleigh-Sommerfeld integral and the scattered waves from flaws are calculated with the fast multipole BEM (FMBEM). By using the FMBEM, we can solve large scale scattering problems with relatively low computational cost. Here we focus on the transient wave analysis, in which a pulse-shaped wave is used for exciting elements of the array transducer.
引用
收藏
页码：822 / 829
页数：8
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