Short through cracks from a blunt notch under constant amplitude loading

Seetharam, SA and Dash, PK and Raju, KN and Balaraman, K (1990) Short through cracks from a blunt notch under constant amplitude loading. In: 4th International Conference on Fatigue and Fatigue Thresholds, 15-20 July 1990, United Kingdom.

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Abstract

Through-the-thickness short cracks are grown from a semi - circular edge notch. Growth rates under constant amplitude loading at four different stress ratios are compared with that of long cracks. Except for the initial dip no anomalously higher growth rate is observed for these short cracks. The dip in the growth rate seems to disappear at high stress ratio. Both the short and the long cracks show a stress level effect on growth rate at stress ratio of -1.0. Available information on crack closure behavior at high stress ratio explains the observed trend. 13; 13;

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Aluminum allloys;Crack closure;Notch tests;Short cracks;Stress ratio;Copper alloys;Crack propagation
Subjects: AERONAUTICS > Aeronautics (General)
Division/Department: Structures Division, Structures Division, Materials Science Division, Electrical Section
Depositing User: M/S ICAST NAL
Date Deposited: 10 Oct 2006
Last Modified: 24 May 2010 09:51
URI: http://nal-ir.nal.res.in/id/eprint/2906

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