Abstract
The results of certaio experiments on propagation of cracks in internally pressurized pipes are analysed as a known criterion based upon using the quantity LIC as a parameter governing the conditions for crack growth initiation. Formally, LIC is equal to the squared ratio of the material plane strain fracture toughness to its yield stress in pure tension. It is shown that such a criterion is in good agreement with the experiments on crack growth initiation in pipes fabricated from typical ductile structural steels. The criterion is applicable to both through-wall and part-through-wall (surface) cracks.References
1.
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Fracture toughness, Iron and Steel Institute, ISI Publication, 121, London 1968.
G.R. IRWIN, Linear fracture mechanics, Fracture Transition, and Fracture Control, Eng. Fract. Mech., 1, 2, 241-257, 1968.
L. F. KIEFNER, W.A. MAXEY, R.J. EIBER, A.R. DUPPY, Failure stress levels of flaws in pressurized cylinders, ASTM STP 536, 461-481, 1973.
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W.A. MAXEY, L. F. KIEFNER, R.J. EIBER, A. R. DUFFY, Ductile fracture initiation, propagation and arrest in cylindrical vessels, ASTM STP 514, 1972.
A. R. DUFFY, G. McCLURE, R.J. EIBER, W.A. MAXEX, Fracture design practices for pressure piping, in: Fracture, An Advanced Treatise, 5, ed. H. LIEBOWITZ, Academic Press, New York and London, 169-232, 1968.
D. T. READ, R. P. READ, Effects of specimen thickness on fracture toughness of CTH aluminum alloy, Intern. J. Fract. Mech., 13, 2, 201-203, 1977.
F.S. FOLIAS, An axial crack in a pressurized cylindrical shell, Intern. J. Fract. Mech., 1, 1, 20-46, 1965.
G. R. IRWIN, Fracture mechanics, in Proceedings of the I-st Symposium on Naval Structural' Mechanics, Pergamon Press, New York 1960.
G. R. IRWIN, P. PARIS, Fundamental aspects of crack growth and fracture, in: Fracture, An Advanced Treatise, 3, ed. H. LIEBOWITZ, Academic Press, New York and London 1968.
Fracture toughness, Iron and Steel Institute, ISI Publication, 121, London 1968.
G.R. IRWIN, Linear fracture mechanics, Fracture Transition, and Fracture Control, Eng. Fract. Mech., 1, 2, 241-257, 1968.
L. F. KIEFNER, W.A. MAXEY, R.J. EIBER, A.R. DUPPY, Failure stress levels of flaws in pressurized cylinders, ASTM STP 536, 461-481, 1973.
A. R. DUFFY, R.J. EIBER, W.A. MAXEY, Recent work on flaw behaviour in pressure vessels, in: Practical Fracture, Mechanics for Structural Steels, Report M. ed. M. DOBSON, Academic Press, New York and London 1969.
W.A. MAXEY, L. F. KIEFNER, R.J. EIBER, A. R. DUFFY, Ductile fracture initiation, propagation and arrest in cylindrical vessels, ASTM STP 514, 1972.
A. R. DUFFY, G. McCLURE, R.J. EIBER, W.A. MAXEX, Fracture design practices for pressure piping, in: Fracture, An Advanced Treatise, 5, ed. H. LIEBOWITZ, Academic Press, New York and London, 169-232, 1968.
D. T. READ, R. P. READ, Effects of specimen thickness on fracture toughness of CTH aluminum alloy, Intern. J. Fract. Mech., 13, 2, 201-203, 1977.
F.S. FOLIAS, An axial crack in a pressurized cylindrical shell, Intern. J. Fract. Mech., 1, 1, 20-46, 1965.
G. R. IRWIN, Fracture mechanics, in Proceedings of the I-st Symposium on Naval Structural' Mechanics, Pergamon Press, New York 1960.
