SYMPOSIA PAPER Published: 01 January 1970
STP32041S

Fatigue Life of 2024-T3 Aluminum Alloy Under Narrow- and Broad-Band Random Loading

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Narrow- and broad-band random fatigue tests were conducted on small cantilever specimens of 2024-T3 aluminum alloy. A slightly longer fatigue life was found with the broad-band loading. Both the Palmgren-Miner and Corten-Dolan theories were found to overestimate the fatigue life. A proposed equivalent-crack-length theory shows good agreement with the test results. Also, a means for comparing the fatigue life under different types of random loading is illustrated. In this work fatigue life is based on the number of peaks to failure.

Author Information

Hillberry, BM
ASTM, Lafayette, Ind.
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Details
Developed by Committee: E08
Pages: 167–183
DOI: 10.1520/STP32041S
ISBN-EB: 978-0-8031-4584-9
ISBN-13: 978-0-8031-0032-9