Relationship Between Fatigue Notch Factor Kf and Stress Concentration Factor Kt

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Journal of Materials Engineering ›› 2007, Vol. 0 ›› Issue (7) : 70-73.

Relationship Between Fatigue Notch Factor K_{f_{and Stress Concentration Factor K_t}}

HU Ben-run, LIU Jian-zhong, CHEN Jian-feng

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Abstract

Fatigue notch factor K_f is usually used to express the reduction in fatigue strength of the component notch.The factor of K_f is very useful in fatigue design.In this paper analysis for many fatigue limit of aluminum alloy,titanium alloy and steel with stress ratio of 0.5,0.06,-1 showed that the relation between most of K_t and K_f is linear except some case.The relation of K_f and K_t not only depends on the kinds of material but also on the stress ratios.

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notched specimen / fatigue / fatigue notch factor K_f / stress concentration factor K_t

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HU Ben-run, LIU Jian-zhong, CHEN Jian-feng. Relationship Between Fatigue Notch Factor K_{f_{and Stress Concentration Factor K_t[J].}}Journal of Materials Engineering, 2007, 0(7): 70-73

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