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Precision Diagnosis of Electric Multiple Units for Performance Evaluation

机译：电动多单元的精确诊断以评估性能

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The precision diagnosis of subway electric multiple units (EMUs) was conducted with various types of engineering analysis techniques for the current performance and wear evaluation. The evaluation was conducted on detailed parts of EMUs, such as car bodies, bogies, braking systems, and electrical systems of EMUs. Several characterization means including nondestructive evaluation techniques, corrosion testing, and three-dimensional measurements, were employed for the evaluation of car bodies and bogies. For braking system, degradation and performance tests were conducted, while the functional and degradation tests were performed on electrical system in order to identify the actual performance of the system. Moreover, stress and structural analyses using commercial finite element method (FEM) software provided important information on stress distribution and load transfer mechanisms. In this investigation, various advanced engineering analysis techniques for the safety analysis of subway EMUs have been introduced and the analysis results have been used to provide the critical information for the criteria of safety assessment.
机译：使用各种类型的工程分析技术对地铁电动多单元（EMU）进行精确诊断，以评估其当前性能和磨损。对动车组的详细部分进行了评估，例如动车组的车身，转向架，制动系统和电气系统。包括无损评估技术，腐蚀测试和三维测量在内的几种表征方法被用于评估车身和转向架。对于制动系统，进行了退化和性能测试，同时对电气系统进行了功能和退化测试，以识别系统的实际性能。此外，使用商业有限元方法（FEM）软件进行的应力和结构分析提供了有关应力分布和载荷传递机制的重要信息。在这项调查中，介绍了用于地铁动车组安全分析的各种先进工程分析技术，并且分析结果已用于为安全评估标准提供关键信息。

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