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

  • M. Y. Rajab
Conference paper


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.


Fracture Toughness Stress Intensity Factor Pressure Vessel Finite Element Solution Full Scale Test 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. 1.
    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
  2. 2.
    Pu, S.L.; Hussain, M.A.: in ASTM STP 677, 1979, p.685.Google Scholar
  3. 3.
    Underwood, O.H.; Throop, D.F.: in ASTM STP 687, 1977.Google Scholar
  4. 4.
    Davidson, T.E.; Throop, O.F.; Underwood, D.H.: as in ref.l, p.3.9.1.Google Scholar
  5. 5.
    Rooke, D.P.; Barata, F.I.; Cartright, D.G.: Eng.Frac. Mech. 14 (1981) 397–426.CrossRefGoogle Scholar
  6. 6.
    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

Personalised recommendations