A SAFT algorithm for lamb wave imaging of isotropic plate-like structures

被引：64

作者：

Sicard, R ^{[1
]}

Goyette, J ^{[1
]}

Zellouf, D ^{[1
]}

机构：

[1] Univ Quebec Trois Rivieres, Inst Rech Hydrogene, Trois Rivieres, PQ G9A 5H7, Canada

来源：

ULTRASONICS | 2002年 / 39卷 / 07期

关键词：

lamb waves; SAFT; signal regeneration;

D O I：

10.1016/S0041-624X(01)00087-7

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

Synthetic aperture focusing technique (SAFT) algorithm in the Fourier domain (F-SAFT) has been modified to take into account the dispersive nature of Lamb waves, This new algorithm can be used to produce good ultrasonic images of a plate structure for both dispersive and non-dispersive parts of the Lamb wave dispersion curve. This imaging technique has been tested by performing an inspection in a highly dispersive area of the fundamental flexural S-0 mode in order to demonstrate the usefulness of the new algorithm. Results are presented as a comparison between standard B-scan, original F-SAFT algorithm and new Lamb-SAFT algorithm. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：487 / 494

页数：8

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