Case Studies in Nondestructive Testing and Evaluation
Case Studies in Nondestructive Testing and Evaluation
复制标题
无损检测与评估案例研究
DOI：
--
复制
发表时间：
--
期刊：
影响因子：
--
通讯作者：
M. Papaelias
中科院分区：
文献类型：
--
作者：
Arash Amini;M. Entezami;M. Papaelias
铁路轮对由三个主要部件组成：车轮、车轴和车轴轴承。故障可能发生在上述任何部件上，但最常见的是与车轮和车轴轴承损坏有关。列车运行速度的不断提高意味着车轴轴承的故障可能导致非常严重的脱轨，可能造成人员伤亡，网络运营严重中断，轨道损坏，不必要的成本以及公众对铁路运输的信心丧失。铁路行业一直致力于改善机车车辆的维护和在线状态监测，以尽可能降低故障概率。本文讨论了在英国朗马斯顿对具有阿尔蒂正式损坏的车轴轴承的货车进行的车载声发射测量的结果。声发射信号包络分析已被应用作为一种有效的工具来检测和评估在这项研究中考虑的轴承的损伤。从所获得的结果，它是安全的结论，声发射信号包络分析有能力检测和评估故障轴承沿着与他们的特征缺陷频率在现实世界的条件。© 2016由Elsevier Ltd.发布。这是CC BY-NC-ND许可证下的开放获取文章（
Railway wheelsets consist of three main components; the wheel, axle and axle bearing. Faults can develop on any of the aforementioned components, but the most common are related to wheel and axle bearing damages. The continuous increase in train operating speeds means that failure of an axle bearing can lead to very serious derailments, potentially causing human casualties, severe disruption in the operation of the network, damage to the tracks, unnecessary costs, and loss of confidence in rail transport by the general public. The rail industry has focused on the improvement of maintenance and online condition monitoring of rolling stock to reduce the probability of failure as much as possible. This paper discusses the results of onboard acoustic emission measurements carried out on freight wagons with artificially damaged axle bearings in Long Marston, UK. Acoustic emission signal envelope analysis has been applied as a means of effective tool to detect and evaluate the damage in the bearings considered in this study. From the results obtained it is safe to conclude that acoustic emission signal envelope analysis has the capability of detecting and evaluating faulty axle bearings along with their characteristic defect frequencies in the real-world conditions. © 2016 Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (