Wideband low frequency generation and detection of Lamb and Rayleigh waves using electromagnetic acoustic transducers (EMATs)

被引：47
作者：
Dixon, S [1 ]
Palmer, SB [1 ]
机构：
[1] Univ Warwick, Dept Phys, Coventry CV4 7AL, W Midlands, England
来源：
ULTRASONICS | 2004年 / 42卷 / 10期
基金：
英国工程与自然科学研究理事会;
关键词：
EMAT; Lamb wave; Rayleigh wave; non-contact ultrasound;
D O I：
10.1016/j.ultras.2004.02.019
中图分类号：
O42 [声学];
学科分类号：
070206 ; 082403 ;
摘要：
This paper describes a new type of non-contact electromagnetic transducer (EMAT) that can be used to generate both Lamb and Rayleigh waves on metal samples. The generated waves are wideband and low frequency with a dominant frequency content centred at approximately 200 kHz extending to around 500 kHz. The transducers have been used on both aluminium and steel, but operate more efficiently on aluminium due to its lower electrical resistance and density when compared to steel. (C) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码：1129 / 1136
页数：8
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