A Study of Cumulative Fatigue Damage in 2011-T3 Aluminum Alloy.
Abstract
This report describes the experimental facility developed at Tuskegee Institute, Tuskegee, Alabama, to study the effect of cumulative fatigue damage in selected materials. The equipment procured consists of direct tension-compression fatigue testing machines Model DS-600 HLM and DS-6000 HLM instrumented to conduct fatigue tests on Aluminum, steel and super alloys under various stress sequences. Specimen profiler, heat treatment furnace and electropolishing apparatus were purchased and/or developed for specimen preparation. Experimental data were generated using 2011-T3 aluminum alloy specimens under stress ratios R=-1, R=-0.5, and R=0, for low-high, low-high mixed, and high-low mixed stress sequences. Analysis of the data has indicated that the predicted cumulative fatigue damage and fatigue life are in close agreement for low-high and low-high mixed stress sequences under all stress ratios as compared with those obtained experimentally, whereas the theoretical values for high-low and high-low mixed stress sequences under all stress ratios were more conservative than those obtained experimentally. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 1981
- Accession Number
- ADA116513
Entities
People
- Purander A. Reddy
- Shaik Jeelani