Modeling guided wave propagation with application to the long-range defect detection in railroad tracks
Modeling guided wave propagation with application to the long-range defect detection in railroad tracks
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DOI：
10.1016/j.ndteint.2004.10.008
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发表时间：
2005-07-01
影响因子：
4.2
通讯作者：
Viola, E
中科院分区：
文献类型：
--
作者：
Bartoli, I;di Scalea, FL;Viola, E
这项工作的目的是演示使用一个商业有限元软件包，ABAQUS EXPLICIT，超声导波在结构部件建模。感兴趣的特定应用是模拟宽带垂直弯曲模式与铁路轨道中的横向型缺陷的相互作用。本课题是一个更广泛的项目的一部分，高速缺陷检测轨道的远程超声检测。在20-45 kHz范围内的反射系数谱获得四个不同的大小和三个不同的方向的横向头部缺陷。对自由板中兰姆波的初步研究有助于为钢轨建模提供指导。(c)2004爱思唯尔有限公司保留所有权利。
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.