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RESEARCH PAPERS: Offshore Mechanics/Ocean Engineering/Arctic Engineering

The Fatigue Behavior of Large-Scale As-Welded and Stress-Relieved Tubular T Joints

[+] Author and Article Information
C. D. Shinners

Production Department, Esso Australia, Sydney, Australia

A. Abel

University of Sydney, N. S. W., Australia

J. Energy Resour. Technol 105(2), 170-176 (Jun 01, 1983) (7 pages) doi:10.1115/1.3230898 History: Received November 15, 1981; Revised July 31, 1982; Online October 22, 2009

Abstract

The changing strain distribution within large-scale tubular T joints, subjected to fully reversed axial brace fatigue loading, were measured in as-welded and stress-relieved conditions. Initial static loading enabled estimation of stress concentration factors and comparisons with the predictions of available published formulas. Dynamic load amplitudes were selected to give approximately equal hot-spot strains in all joints, thus facilitating direct comparison between specimens with different dimensions. Post-weld heat treatment increased the cycles needed for crack initiation and also reduced the crack propagation rates.

Copyright © 1983 by ASME
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