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Stress Intensity Factor for Cracks in Pressure Vessels with Optimum Cracks Number

  • M. Y. Rajab
Conference paper

Summary

The cracks in pressure vessels (e.g.thick wall cylinders) subjected to high internal pressure and thermal shocks are always radial, they are semi-elliptical in form and their number varies along the length of the cylinder. These cracks are often called star cracks or crazy cracks. Modelling of such a crack configuration is still a serious problem, as the actual number of cracks is not known. The paper presents a stress intensity factor solution as a function of crack length, number of cracks in the star and wall thickness simultaneously with a procedure how to determine the optimum number of cracks.

Keywords

Fracture Toughness Stress Intensity Factor Pressure Vessel Finite Element Solution Full Scale Test 
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References

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    Goldthrope, B.D.: in Case Studies In Fracture Mechanics (eds. T.P.Rich and D.Cart right), TRMS 77–5, 1977,p.3.8.1.Google Scholar
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    Pu, S.L.; Hussain, M.A.: in ASTM STP 677, 1979, p.685.Google Scholar
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    Underwood, O.H.; Throop, D.F.: in ASTM STP 687, 1977.Google Scholar
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    Davidson, T.E.; Throop, O.F.; Underwood, D.H.: as in ref.l, p.3.9.1.Google Scholar
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    Rooke, D.P.; Barata, F.I.; Cartright, D.G.: Eng.Frac. Mech. 14 (1981) 397–426.CrossRefGoogle Scholar
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    Owen, D.; Fawkes, A.: Engineering Fracture Mechanics, 1983.Google Scholar

Copyright information

© Springer Japan 1986

Authors and Affiliations

  • M. Y. Rajab
    • 1
  1. 1.Department of Mechanical EngineeringMTCBaghdadIraq

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