The Influence of Notch Geometric Size in the Fatigue Strength of Steel-Reference-Cited by-同舟云学术

The Influence of Notch Geometric Size in the Fatigue Strength of Steel

Published:2014-08 Issue: Volume:602-605 Page:167-171
ISSN:1662-7482
Container-title:Applied Mechanics and Materials
language:
Short-container-title:AMM

Author:

Yuan Yong Zhuang¹

Affiliation:

1. Lanzhou University of Technology

Abstract

The fatigue behavior of notch specimens has been investigated in this manuscript. It is shown that notch geometric size has apparent effect for fatigue strength of specimens. The blunt notch is used in test. It is concluded that geometric size effect depends on the stress gradient and can be estimated with the help of the linear elastic fracture mechanics. The influence of notch size for fatigue strength can be explained with geometric factor. The plastic strain play an important role in fatigue crack initiation with notch gets sharper reach certain magnitude limit, and fatigue strength is lower than the predicted by geometric size factor effect. The method does not apply fatigue strength of the sharper notch. Another estimation method shall be used to that kind of notches.

Publisher

Trans Tech Publications, Ltd.

Link

https://www.scientific.net/AMM.602-605.167.pdf

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