Numerical and experimental study of guided waves for detection of defects in the rail head

被引：54

作者：

Coccia, Stefano ^{[1
]}

Bartoli, Ivan

Marzani, Alessandro ^{[2
]}

di Scalea, Francesco Lanza ^{[1
]}

Salamone, Salvatore ^{[3
]}

Fateh, Mahmood ^{[4
]}

机构：

[1] Univ Calif San Diego, Dept Struct Engn, NDE & SHM Lab, La Jolla, CA 92093 USA

[2] Univ Bologna, DISTART, I-40136 Bo, Italy

[3] SUNY Buffalo, Dept Civil Struct & Environm Engn, Buffalo, NY 14260 USA

[4] Fed Railroad Adm, Off Railroad Dev, Washington, DC 20590 USA

来源：

NDT & E INTERNATIONAL | 2011年 / 44卷 / 01期

关键词：

Guided waves; Rail defect detection; Wave propagation; Nondestructive testing; PROPAGATION; INSPECTION; TRACKS;

D O I：

10.1016/j.ndteint.2010.09.011

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

This paper gives insight to the ultrasonic wave propagation in arbitrary cross-section waveguides such as rails with application to ultrasonic inspection Due to the geometrical complexity of the rail cross-section the analytical solution to the wave propagation in the rail is not feasible A Semi Analytical Finite Element method is described as an alternative yet still robust approach to get the solution of the problem The free-vibration solution and the forced solution to a laser excitation of the rail head are shown up to a frequency of 500 kHz The effects of different loading patterns are discussed and experimental results are provided The analysis allows for the identification of certain wave modes potentially sensitive to specific types of rail head defects (C) 2010 Elsevier Ltd All rights reserved

引用

页码：93 / 100

页数：8

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