Structural Health Monitoring ( IF 5.7 ) Pub Date : 2021-05-29 , DOI: 10.1177/14759217211013110 Hao Ge 1 , David Chua Kim Huat 2 , Chan Ghee Koh 2 , Gonglian Dai 3 , Yang Yu 4
The unavoidable increase in train speed and load, as well as the aging of railway facilities, is requiring more and more attention to rail defects detection. As a promising tool for rail, in-service high-speed inspection, guided wave–based detection technologies have been developed in succession by researches in the past two decades. However, there is a lack of a systematic review on the developments and performances of these technologies. This article reviews ultrasonic rail inspection methods comprehensively with the focus on the state-of-the-art technologies based on guided wave. Different excitation options, including train wheel, electromagnetic acoustic transducer, pulsed laser, air-coupled, and contact piezoelectric transducer, are described, respectively, along with their inspection sensitivities, regions, and potential speeds. Finally, future challenges and prospects are discussed to a certain extent to provide references for researchers in this area.
中文翻译:
基于导波的钢轨探伤技术:最新评论
列车速度和负荷不可避免的增加,以及铁路设施的老化,要求越来越多地关注铁路缺陷检测。作为一种很有前途的铁路在役高速检测工具,基于导波的检测技术在过去二十年的研究中相继发展起来。然而,缺乏对这些技术的发展和性能的系统评价。本文重点介绍了基于导波的最新技术,全面回顾了超声波钢轨检测方法。分别描述了不同的激励选项,包括火车轮、电磁声换能器、脉冲激光、空气耦合和接触压电换能器,以及它们的检测灵敏度、区域和潜在速度。最后,