RESEARCH PAPERS: Offshore Mechanics

Analysis of Corrosion Fatigue Crack Growth in Welded Tubular Joints

[+] Author and Article Information
S. J. Hudak, O. H. Burnside, K. S. Chan

Southwest Research Institute, San Antonio, Tex. 78284

J. Energy Resour. Technol 107(2), 212-219 (Jun 01, 1985) (8 pages) doi:10.1115/1.3231179 History: Received March 19, 1984; Revised December 17, 1984; Online October 22, 2009


An improved fracture mechanics model for fatigue crack growth in welded tubular joints is developed. Primary improvements include the use of a wide-ranged equation for the fatigue crack growth rate properties and the incorporation of the influence of local weld-toe geometry into the stress intensity factor equations. The latter is shown to explain the dependence of the fatigue life on the size of tubular joints. Good agreement between predicted and measure fatigue lives of full-scale joints tested in air further supports the applicability of the fracture mechanics approach to offshore structures. Although the model should also be applicable to corrosion fatigue, additional imput data and verification testing are needed under these conditions. Factors which could improve the model are discussed.

Copyright © 1985 by ASME
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