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Overloading effect on the fatigue threshold stress intensity factor range (ΔKth) as a function of crack length in SUS316

Yasuaki Hashikura (Department of Energy and Safety Engineering, Graduate School of Engineering, Yokohama National University, Yokohama, Japan)
Koji Takahashi (Department of Energy and Safety Engineering, Yokohama National University, Yokohama, Japan)
and
Yuji Miyazaki (Department of Energy and Safety Engineering, Yokohama National University, Yokohama, Japan)
Keiji Houjou (Department of Mechanical Engineering, Oyama National College of Technology, Oyama, Japan)
Kotoji Ando (Department of Energy and Safety Engineering, Yokohama National University, Yokohama, Japan)

International Journal of Structural Integrity

ISSN: 1757-9864

Article publication date: 5 March 2010

2061

Abstract

Purpose

–

The purpose of this paper is to study the effects of overload on the threshold stress intensity factor range (ΔKth) in SUS316.

Design/methodology/approach

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The fatigue tests are carried out to determine the resultant threshold stress intensity factor range (ΔKth). The mechanism of the improvement of ΔKth by the tensile overloading is analyzed using the Dugdale model.

Findings

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It is clarified that the value of ΔKth increases as increasing the overloading.

Research limitations/implications

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The apparent value of ΔKth of stainless steel can be improved by a tensile overload, the fatigue strength of structural members that have a surface crack can be increased by a tensile overload.

Originality/value

–

As a result, the reliability and safety of structures, such as energy plants, can also be improved.

Keywords

Citation

Hashikura, Y., Takahashi, K., Miyazaki, Y., Houjou, K. and Ando, K. (2010), "Overloading effect on the fatigue threshold stress intensity factor range (ΔKth) as a function of crack length in SUS316", International Journal of Structural Integrity, Vol. 1 No. 1, pp. 43-51. https://doi.org/10.1108/17579861011023784

Publisher

:

Emerald Group Publishing Limited

Copyright © 2010, Emerald Group Publishing Limited

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