Measuring the Actual Endurance Limit of One Specimen Using a Nondestructive Method

[+] Author and Article Information
R. Harry, F. Joubert

Laboratoire de Mécanique Physique, E.R.A., C.N.R.S F69, Université de Bordeaux I, 33405, Talence Cedex, France

A. Gomaa

Department of Mechanical Engineering, Alexandria University, Alexandria, Egypt

J. Eng. Mater. Technol 103(1), 71-76 (Jan 01, 1981) (6 pages) doi:10.1115/1.3224974 History: Received September 20, 1979; Online September 15, 2009


The conventional endurance limit does not characterize one specimen but a set of virgin specimens. This present study deals with the determination of the present state of one specimen by its “actual” endurance limit. The connection between the state of a specimen and its thermal response, obtained by using the thermal test method, has already been shown. It is shown here the close correlation which exists between the transition stress value τl and the actual endurance limit of the specimen. Thus, the actual endurance limit of a specimen at any moment in its fatigue life, so, at any stage of treatment, could be determined by using a “nondamaging” method.

Copyright © 1981 by ASME
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