Paper Title:
Failure Analysis of a Welded Aluminum Alloy Component in High-Speed Train
  Abstract

In this paper, a failure analysis is made to a welded aluminum alloy component of the equipment by module below the high-speed train. Making force analysis to the welded components by finite element, microscopic morphology observation and element distribution measurement of the fracture surface are done by the scanning electron microscopy and spectroscopy .It is determined that the main reason of fracture of welded components was that stress concentration exist in the working conditions, and the weld toe is the most severe stress concentration region. The stress concentration causes the fatigue microcrack, and under the action of repeated external force crack propagates and then crack. Lacking of penetration sites is under tensile residual stress, the crack propagation speed, and soon to instability and then broken.

  Info
Periodical
Chapter
Chapter 4: Mechanical Behavior & Fracture
Edited by
Prasad Yarlagadda, Yun-Hae Kim, Zhijiu Ai and Xiaodong Zhang
Pages
670-673
DOI
10.4028/www.scientific.net/AMR.337.670
Citation
Y. H. Zhu, W. Zhou, Y. Nie, Z. Y. Zhu, H. Chen, G. G. Wang, J. P. Yu, "Failure Analysis of a Welded Aluminum Alloy Component in High-Speed Train", Advanced Materials Research, Vol. 337, pp. 670-673, 2011
Online since
September 2011
Export
Price
$35.00
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