Crack closure studies under constant amplitude loading |
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Authors: | Satish Chand SBL Garg |
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Affiliation: | Mechanical Engineering Department, Motilal Nehru Regional Engineering College, Allahabad-211004, India |
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Abstract: | Crack closure experiments were performed on 6063-T6 Al-alloy using a COD-gauge for various load ranges and stress ratios. Experimental results show that for a given stress ratio, , the crack closure load goes on decreasing as crack length increases (or increases) and reaches even below minimum load level at higher values of stress ratios. On the basis of these experimental results, a model for effective stress intensity range ratio , which is found to be a function of stress ratio and , is developed. |
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