Paper Title:
An Analysis of the Fatigue Strength of Metals Containing Small Defects
  Abstract

A modified linear-elastic fracture mechanics approach proposed by McEvily has been applied to predict the effects of small defects on the fatigue limit and the threshold level. In the analysis, three modifications were taken into account (1) the effect of elastic-plastic behavior of small cracks, (2) the Kitagawa effect where in the very small crack regime the required stress for propagation is controlled by the fatigue limit of a smooth specimen rather than by the long-crack threshold condition, and (3) the effect of crack closure development from zero up to the macroscopic level as a newly formed crack extends. Three steels, a brass and an Al alloy were investigated. Good agreement between predicted and experimental results has been obtained and a rational basis for the area parameter model was shown.

  Info
Periodical
Key Engineering Materials (Volumes 353-358)
Edited by
Yu Zhou, Shan-Tung Tu and Xishan Xie
Pages
323-326
DOI
10.4028/www.scientific.net/KEM.353-358.323
Citation
M. Endo, A.J. McEvily, "An Analysis of the Fatigue Strength of Metals Containing Small Defects", Key Engineering Materials, Vols. 353-358, pp. 323-326, 2007
Online since
September 2007
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Li Yun Li, F.X. Che, D.A. Liu
Abstract:Multi-crack problems are deeply involved in rock-like material and rock engineering. In order to study the influences of lateral stress and...
1523
Authors: Tomáš Denk, Vladislav Oliva, Aleš Materna
Abstract:A two-parameter constraint-based fracture mechanics approach is used to explain the effect of the constraint on the apparently anomalous...
307
Authors: Choong Myeong Kim, Jung Kyu Kim, Chul Su Kim
Abstract:The optimum welding condition for the input power was experimentally determined using the ERW simulator. The optimum condition derived from...
3
Authors: Jia Zhen Zhang, Xiao Dong He, Shan Yi Du
Abstract:In-situ SEM observations have revealed that fatigue crack propagation in aluminium alloys is caused by the shear band decohesion around the...
293
Authors: Stanislav Seitl, Pavel Hutař, Zdeněk Knésl
Abstract:The formulations of fatigue crack growth prediction are still mostly based on phenomenological models. A commonly used formula in the field...
557