Fatigue crack growth behaviour of aluminum-lithium alloy

Anandan, K and Dash, PK and Brahma, KK (1990) Fatigue crack growth behaviour of aluminum-lithium alloy. In: 4th International Conference on Fatigue Thresholds, 15-20 Jul 1990, Honolulu, United States.

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Abstract

Fatigue crack growth behavior was investigated in 8090 plate and sheet material under constant-amplitude as well as spectrum loading. The effect of rolling direction, thickness, stress ratio, spectrum load truncation, and omission level on crack growth were studied. 8090-T85113; plate material has significant anisotropy in crack growth behavior under spectrum loading. No significant effect of plate thickness on crack growth was observed. Lower truncation level led to reduced growth rate at a given reference stress intensity. Crack closure level in spectrum load test was higher compared to constant amplitude closure level.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Aluminum-lithium alloys;Crack propagation;Metal fatigue;Loading rate;Metal plates;Stress ratio;Thickness ratio
Subjects: CHEMISTRY AND MATERIALS > Metals and Metallic Materials
CHEMISTRY AND MATERIALS > Chemistry and Materials (General)
Division/Department: Structures Division, Structures Division, Structures Division
Depositing User: M/S ICAST NAL
Date Deposited: 01 Apr 2008
Last Modified: 24 May 2010 09:55
URI: http://nal-ir.nal.res.in/id/eprint/4447

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