A R-p-da/dN-ΔK Surface Formula and the Statistical Analysis of Effects of Stress Ratio on Crack Growth for GC4 Steel-Reference-Cited by-同舟云学术

A R-p-da/dN-ΔK Surface Formula and the Statistical Analysis of Effects of Stress Ratio on Crack Growth for GC4 Steel

Published:2012-03 Issue: Volume:490-495 Page:3044-3048
ISSN:1662-8985
Container-title:Advanced Materials Research
language:
Short-container-title:AMR

Author:

Wang Kun Qian¹,Xu Ren Ping¹,Lin Jie Hui²

Affiliation:

1. Kunming University of Science and Technology

2. Yunnan Branch of Shanghai Mitsubishi Elevator Corporation

Abstract

surface formula based on stress ratio was proposed in consideration of the effects of stress ratio on fatigue crack growth rate and the scatter of fatigue crack growth. The parameters of surface formula were estimated by using the linear principle of no-linear function. The surface formula was applied on GC4 steel to analyze statistically the effects of stress ratio on fatigue crack growth rate. The results showed that the crack growth rate will increases as the stress ratio increases in the stable stage of fatigue crack propagation for GC4 steel. The increase trend is more obvious when higher reliability is demanded.

Publisher

Trans Tech Publications, Ltd.

Subject

General Engineering

Link

https://www.scientific.net/AMR.490-495.3044.pdf

Reference10 articles.

1. GB/T6398-2000: Metal materials fatigue crack growth rate test methods(2000), in Chinese.

2. Gao Zhentong: Fatigue application statistics(Defence Industry Press, Beiging 1986), in Chinese.

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4. Wang G S: Eng Fract Mech, Vol. 51(1995), pp.787-803.

5. Wang K s, Chang S T, Shen Y C: Eng Fract Mech, Vol. 54(1996), pp.543-556.

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