Modeling guided wave propagation with application to the long-range defect detection in railroad tracks

被引：149
|
作者：
Bartoli, I
di Scalea, FL
Fateh, M
Viola, E
机构：
[1] Univ Calif San Diego, Dept Struct Engn, NDE & Struct Hlth Monitoring Lab, La Jolla, CA 92093 USA
[2] US Dept Transportat, Fed Railrd Adm, Track Res Div, Washington, DC 20590 USA
[3] Univ Bologna, Dipartimento Strutture Trasporti Acque Rilevament, I-40136 Bologna, Italy
来源：
NDT & E INTERNATIONAL | 2005年 / 38卷 / 05期
基金：
美国国家科学基金会;
关键词：
guided waves; rail inspection; finite elements; wavelet transform;
D O I：
10.1016/j.ndteint.2004.10.008
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The aim of this work is to demonstrate the use of a commercial finite element package, ABAQUS EXPLICIT, to model ultrasonic guided waves in structural components. The particular application of interest is modeling the interaction of a broadband vertical bending mode with transverse-type defects in railroad tracks. This topic is part of a broader project on high-speed defect detection in rails by long-range ultrasonic inspections. Reflection coefficient spectra in the 20-45 kHz range are obtained for four different sizes and three different orientations of transverse head flaws. A preliminary study of Lamb waves in a free plate helps drawing modeling guidelines for the rail. (c) 2004 Elsevier Ltd. All rights reserved.
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页码：325 / 334
页数：10
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