Safety Diagnosis of Collided Subway Electric Multiple Units (EMUs)


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Engineering safety diagnosis of collided subway electric multiple units (EMUs) was conducted for safety assessment. Several advanced engineering analysis techniques including nondestructive evaluation (NDE) techniques and stress and structural analyses programs, were performed for better understandings and exploration of failure analysis and safety concerns. NDE techniques such as ultrasonic testing and magnetic particle testing, were used to detect manufactureinduced and/or in-service defects and collision-induced flaws, and measure the dimensions of deformed and non-deformed parts on damaged EMUs due to a rear-end collision. Moreover, stress and structural analyses using commercial I-DEAS software provided important information on stress distribution and load transfer mechanisms as well as the amount of damages during the crash. A good agreement has been found between structural analysis results and the results of actual damages in EMUs during crash. 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 rovide the critical information for the safety assessment of collided EMUs.



Key Engineering Materials (Volumes 297-300)

Edited by:

Young-Jin Kim, Dong-Ho Bae and Yun-Jae Kim




J. D. Chung et al., "Safety Diagnosis of Collided Subway Electric Multiple Units (EMUs) ", Key Engineering Materials, Vols. 297-300, pp. 1876-1881, 2005

Online since:

November 2005




[1] J.D. Chung, et al.: An interim report on precision diagnosis of railroad EMUs (in Korean) (Korea Railroad Research Institute, December 2002).

[2] A report on management of Bogie life for subway EMU (in Korean) (Korea Machinery Research Institute, March 1999).

[3] Safety diagnosis of Seoul subway system (in Korean) (Seoul Metropolitan Subway Corporation, October 1995).

[4] J. Kim, et al.: Maintenance And Reliability CONference (MARCON) 2004, MARCON 2004 Proceedings (a CD), (2004).

[5] ASM Handbook, Vol. 17, Nondestructive Evaluation and Quality Control (ASM International, 1992).

[6] S. Ness and C.N. Sherlock: Nondestructive Testing Handbook, second ed. Vol. 10, Nondestructive Testing Overview (Technical eds., P.O. Moore and P. M. McIntire, eds. ) (American Society for Nondestructive Testing, Inc., 1996).

[7] Joseph L. Rose: Ultrasonic Waves in Solid Media (Pennsylvania State University, 1999).

[8] V. Esslinger, et al.: Engr. Failure Analysis Vol. 11 (2004), p.515.

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