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TECHNICAL PAPERS

Life Prediction of Notched Components

[+] Author and Article Information
M. Giglio, L. Vergani

Dipartimento di Meccanica, Politecnico di Milano, Italy

J. Eng. Mater. Technol 117(1), 50-55 (Jan 01, 1995) (6 pages) doi:10.1115/1.2804371 History: Received December 01, 1992; Revised February 28, 1994; Online November 27, 2007

Abstract

In this study, keyhole and smooth specimens, made from a low alloy pressure vessel steel (ASTM A-533 grade B), were subjected to monoaxial fatigue tests. The results show the influence of the stress concentration factor, Kt , on the number of cycles to failure, Nf . Total strain energy per cycle, ΔWt = ΔWp + ΔWe , was proved to be a good parameter for predicting the life of notched components. Elasto-plastic FEM analysis, utilizing the cyclic and monotonic curve of the material, showed close agreement with the experimental values.

Copyright © 1995 by The American Society of Mechanical Engineers
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