The Effects of Periodic High Loads on Fretting Fatigue

[+] Author and Article Information
A. Kantimathi

The Carlson Company, Inc., Wichita, Kan. 67219

J. A. Alic

Office of Technology Assessment, Washington, D.C. 20510

J. Eng. Mater. Technol 103(3), 223-228 (Jul 01, 1981) (6 pages) doi:10.1115/1.3225005 History: Received January 30, 1980; Online September 15, 2009


Fretting fatigue tests have been conducted on 7075-T7351 aluminum alloy coupons with fretting pads of the same material. Three different stress ratios were used, the otherwise constant amplitude axial loads being interrupted every 1000 cycles by either tensile overloads to 400 MPa or compressive underloads to −200 MPa. Tensile overloads greatly prolonged fatigue life for low stresses where the overload ratios were 1.6 and above; compressive underloads had comparatively little effect. The results are discussed in terms of crack growth retardation phenomena.

Copyright © 1981 by ASME
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