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

被引:53
|
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
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
收藏
页码:93 / 100
页数:8
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