Guided wave inspection potential of defects in rail

被引：162

作者：

Rose, JL

Avioli, MJ

Mudge, P

Sanderson, R

机构：

[1] Penn State Univ, Dept Engn Sci & Mech, University Pk, PA 16802 USA

[2] FBS Inc, State Coll, PA 16803 USA

[3] Plant Integrity Ltd, Welding Inst, Cambridge CB1 6AL, England

[4] Welding Inst, Cambridge CB1 6AL, England

来源：

NDT & E INTERNATIONAL | 2004年 / 37卷 / 02期

关键词：

dispersion curves; transverse defect; shear horizontal EMAT; air-coupled transducer;

D O I：

10.1016/j.ndteint.2003.04.001

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The authors provide the results of experiments they have conducted on rail at test tracks and on an operating railroad. Results are presented that suggest that the frequency range [40, 80] kHz readily supports guided waves. Theoretical results including roots of the dispersion relations for rail and a sample of wave displacement within a railhead are presented. Non-contact air-coupled and electromagnetic acoustic transducers (EMATs) are discussed as receivers of sound energy emanating from rail. The results of an experiment that used air-coupled transducers to profile the radiation pattern of a rail are presented. A rail cutting experiment with EMATs that simulated a transverse rail defect is discussed. Conclusions that the authors have drawn from their work are summarized at the end of the paper. (C) 2003 Elsevier Ltd. All rights reserved.

引用

页码：153 / 161

页数：9