Finite Fatigue Life Distributions of SAE 1008 Subjected to Various Load-Time Histories

[+] Author and Article Information
H. A. ElMaraghy, J. N. Siddall

Department of Mechanical Engineering, McMaster University, Hamilton, Ontario, Canada

J. Eng. Mater. Technol 102(1), 135-140 (Jan 01, 1980) (6 pages) doi:10.1115/1.3224770 History: Received July 14, 1978; Online September 15, 2009


The probabilistic fatigue properties of SAE 1008 steel were determined experimentally. A flexural bending fatigue testing program was carried out consisting of: (a) constant strain amplitude, (b) blocks of Hi-Lo and Lo-Hi-Lo strain amplitudes, and (c) narrow band random load history. Fatigue life of 30-45 specimens in each program were recorded and used to construct distributions of fatigue life. A computer simulation technique was used to predict these distributions. Experimental results and theoretical predictions are both presented for comparison.

Copyright © 1980 by ASME
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