STRESS INTENSITY FACTORS FOR A PIPE-PLATE WELDED JOINT

被引：4
作者：
LAMBERT, SB [1 ]
BELL, R [1 ]
机构：
[1] UNIV WATERLOO,DEPT MECH ENGN,WATERLOO N2L 3G1,ONTARIO,CANADA
来源：
INTERNATIONAL JOURNAL OF PRESSURE VESSELS AND PIPING | 1993年 / 53卷 / 03期
关键词：
D O I：
10.1016/0308-0161(93)90075-5
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A major component of any linear elastic fracture mechanics model for fatigue crack growth is the calculation of the crack tip stress intensity factor. This is particularly difficult for welded joints due to the complex geometry. While some data are available for cracks in welded T-plate joints, there is relatively little data available for larger cracks in more complex tubular joints. Such cracks are of significant interest since the most practical application of fracture mechanics models is the prediction of remaining life for cracks discovered in service. A pipe-plate joint has been developed as a simplified model of tubular joint geometries for fatigue studies. Two such specimens have been tested in air, with detailed monitoring of crack growth behaviour using potential drop techniques. These data were used to obtain crack growth rate data from which estimates of stress intensity factors were made. Separately, finite element analyses for various discrete crack configurations were performed. The results of these analyses are presented and discussed, with particular emphasis on the accuracy of the results and the implications for fracture mechanics modelling.
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页码：525 / 542
页数：18
相关论文
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  • [1] Bell, Determination of stress intensity factors for weld toe defects, Phase III report, (1988)
  • [2] Dijkstra, Snijder, van Straalen, Fatigue crack growth calculations using stress intensity factors for weld toe geometries, OMAE 1989, pp. 137-143, (1989)
  • [3] Shen, Glinka, Weight functions for surface semi-elliptical cracks in a finite thickness plate, Journal of Theoretical and Applied Fracture Mechanics, 15, pp. 247-255, (1991)
  • [4] Rhee, The behaviour of stress intensity factors of weld toe surface flaw of tubular X-joint, OTC 5136, Offshore Technology Conference, (1986)
  • [5] Ritchie, Voermans, Vollan, Stress intensity factors in an offshore tubular joint test specimen, Proc. Third Int. Symposium in Numerical Fracture Mechanics, (1987)
  • [6] Mohaupt, Burns, Kalbfleisch, Vosikovsky, Bell, Fatigue crack development, thickness and corrosion effects in welded plate to plate joints, Steel in Marine Structures, SIM'87, Delft, The Netherlands, pp. 269-280, (1987)
  • [7] Vosikovsky, Bell, Burns, Mohaupt, Effects of cathodic protection and thickness on corrosion fatigue life of welded plate T-joints, Steel in Marine Structures, SIMS'87, pp. 787-798, (1987)
  • [8] Lambert, Mohaupt, Burns, Vosikovsky, Simulation of fatigue behaviour of tubular joints using a pipe-to-plate specimen, Steel in Marine Structures, SIMS'87, pp. 489-500, (1987)
  • [9] Lambert, Burns, Mohaupt, Vosikovsky, The influence of seawater and cathodic protection on fatigue crack growth in a pipe-plate model of tubular joints, Offshore Mechanics and Arctic Engineering, OMAE'89, The Hague, The Netherlands, (1989)
  • [10] Forbes, Fatigue in stiffened T-tubular joints for offshore structures, PhD thesis, (1991)
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