Strain Controlled fatigue Crack initiation life prediction of Materials

Upadhyaya, Y S and Sridhara, B K (2012) Strain Controlled fatigue Crack initiation life prediction of Materials. In: Proceedings of 3rd Asian Conference on Mechanics of Functional Materials and Structures ACMFMS 2012.

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Abstract

Strain controlled fatigue crack initiation life of EN 19 steel and 6082-T6 aluminum alloy have been predicted using Continuum Damage Mechanics (CDM) approach. Fatigue life of smooth (un-notched) specimen has been predicted in the strain amplitude range of 0.3 % to 0.7 %, in room temperature at stress ratio of -1. Values of parameters required for the CDM models have been determined by conducting monotonic and cyclic tests. The study shows that using monotonic and cyclic properties of a material available in literature and by conducting Multiple Step Test on one fatigue specimen, strain controlled fatigue crack initiation life of metals and alloys could be predicted.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Continuum Damage Mechanics, crack initiation, fatigue life prediction, steel, aluminum alloy
Subjects: Engineering > MIT Manipal > Mechanical and Manufacturing
Depositing User: MIT Library
Date Deposited: 27 Mar 2013 09:38
Last Modified: 27 Mar 2013 09:38
URI: http://eprints.manipal.edu/id/eprint/79319

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