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THE SIGNIFICANCE OF MEAN STRESS ON THE FATIGUE CRACK GROWTH THRESHOLD FOR MIXED MODE I + II LOADING (1994)

TONG, J. ; YATES, J. R. ; BROWN, M. W.

Oxford, UK : Blackwell Publishing Ltd

Fatigue & fracture of engineering materials & structures 17 (1994), S. 0

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ISSN: 1460-2695

Source: Blackwell Publishing Journal Backfiles 1879-2005

Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics

Notes: Abstract— The effect of mean stress on near threshold fatigue crack growth behaviour under mixed mode I+II loading has been studied in a structural steel BS4360 50D in laboratory air at room temperature. It was found that the branch crack threshold decreased significantly as R ratio (Pmin/Pmax) increased from 0.1 to 0.7. A simple model is proposed to predict the branch crack threshold behaviour for R-ratio sensitive materials. Further investigation is required to model the mode II dominant situations where the branch crack thresholds tend to converge on a high value.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1111/j.1460-2695.1994.tb00812.x

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