Paper Title:
Fatigue Properties Improvement of Notched Structural Steel Sheets
  Abstract

Nearly 90% of failures of machines and mechanical parts are caused at the area of stress concentrated in the structural components. Hence, it is important to investigate the method of improving fatigue strength for notched parts. In this paper, the fatigue tests have been performed to investigate the effect of the plastic-working on fatigue strength of specimens with notch. The main results obtained in this study are as follows: (1) The fatigue limit of notched specimen chamfered by the plastic-working increases by 45% than that of specimen without chamfer. (2) The reason of enhancing the fatigue strength may be to attributed to the work-hardening and compressive residual stress which suppress the fatigue crack initiation and propagation in early stage.

  Info
Periodical
Key Engineering Materials (Volumes 385-387)
Edited by
H.S. Lee, I.S. Yoon and M.H. Aliabadi
Pages
553-556
DOI
10.4028/www.scientific.net/KEM.385-387.553
Citation
N. Hattori, K. Nakayama, M. Zhang, S. Nishida, "Fatigue Properties Improvement of Notched Structural Steel Sheets", Key Engineering Materials, Vols. 385-387, pp. 553-556, 2008
Online since
July 2008
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Price
$32.00
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