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RESEARCH PAPERS: Offshore Mechanics

Brittle Fracture in Heavy Section Welded T-Joints: Correlation Between Stress Intensity at Fracture and Small-Specimen Toughness Tests

[+] Author and Article Information
W. R. Tyson, O. Vosikovsky, B. Faucher

PMRL, CANMET, Ottawa, Ontario, Canada

D. J. Burns

Department of Mechanical Engineering, University of Waterloo, Waterloo, Ontario, Canada

J. Offshore Mech. Arct. Eng 112(1), 53-57 (Feb 01, 1990) (5 pages) doi:10.1115/1.2919835 History: Received January 01, 1987; Revised June 21, 1989

Abstract

A fracture mechanics analysis has been made of brittle fractures encountered during a program of fatigue tests of welded plate T-joints. Fracture toughnesses are in reasonable agreement with small-sample test results, if the following factors are taken into account: a specimen size effect (with larger samples having lower toughness); existence of a substantial contribution to the stress intensity factor from residual stresses; and shakedown of residual stresses, with shakedown increasing with increasing applied stress.

Copyright © 1990 by The American Society of Mechanical Engineers
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