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Precision Diagnosis of Electric Multiple Units for Performance Evaluation

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Abstract:

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.

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Periodical:

Key Engineering Materials (Volumes 353-358)

Pages:

2585-2588

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.353-358.2585

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Online since:

September 2007

Authors:

Jeong Guk Kim, Kyung Taek Park, Sung Cheol Yoon, Sung Tae Kwon

Keywords:

Precision Diagnosis, Safety Assessment, Subway Electric Multiple Units

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© 2007 Trans Tech Publications Ltd. All Rights Reserved

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References

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[6] Nondestructive Testing Handbook, 2 nd ed., vol. 10, Nondestructive Testing Overview, S. Ness, C. N. Sherlock, P. O. Moore, and P. M. McIntire, ASNT, Inc., 1996 Fig. 5 The structural analysis results for (a) bogie frame showing stress distribution, (b) the stress distribution of bogie frame at the intersection of side frame, (c) at the traction motor bracket, and (d) at the driving gear bracket. (b) (a) (c) (d).

DOI: 10.1142/9789812793034_0089

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