A study of crack closure under constant amplitude loading for 6063-T6 Al-alloy |
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| Authors: | Raghuvir Kumar S.B.L. Garg |
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| Affiliation: | Department of Mechanical Engineering, Motilal Nehru Regional Engineering College, Allahabad 21 1004, India |
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| Abstract: | Crack closure experiments were performed on 6063-T6 Al-alloy, using a COD gauge for various load ranges (Δp) and stress ratios, R. On the basis of the experimental results a model for effective stress intensity range ratio U was developed. This model was found to be a function of the stress ratio, R, and was fitted to existing constant amplitude crack propagation data for 6063-T6 Al-alloy. The crack closure load stabilized after 1 mm initial crack growth. |
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