声发射技术在铁路系统检测中的研究和应用

高速铁路的快速发展,给我国经济和社会发展带来了巨大的推动作用,同时对铁路系统的安全性提出了更高的要求。针对声发射技术在铁路系统安全检测中的研究和应用,介绍了声发射技术及其在检测应用中的优点,综述了目前国内外声发射技术在铁路系统检测研究中的情况,包括钢轨伤损检测、车轮伤损检测、轮轴轴承伤损检测、铁路结构安全监测以及车体材料安全监测等,特别针对钢轨裂纹伤损引起的钢轨断裂这一铁路安全中的主要事故,着重分析了声发射技术在钢轨裂纹伤损检测研究中的情况,并介绍了在高速铁路方面的应用探索。最后在上述分析总结的基础上,指出了声发射技术在铁路系统特别是高速铁路检测研究中的前景及研究难点。

Research and application of acoustic emission technique in railway system inspection

The rapid development of high-speed railway has greatly promoted our economic and social development. Meanwhile, the higher requirements are put forward on the safety of railway system. For the research and application of acoustic emission technique in railway system inspection, acoustic emission technique and its advantages are introduced, and acoustic emission technique in railway system inspection is reviewed, including rail defect detection, wheel defect detection, wheel-axle and bearing inspection, safety monitoring of railway structure and safety monitoring of car body material. Because the rail breakage caused by rail defect is the main rail safety accident, the review of acoustic emission technique in rail defect detection is emphasized. Based on the above analysis, future developments and research challenges of acoustic emission technique in railway system inspection are discussed.