Abstract
The initiation of crack growth was observed in single edge notched tensile specimens under plane strain conditions. The shape of the deformation zone varied from being balloon-like above 12 MPa and nearly planar below but neither shape conformed to that predicted by the conventional shear type yield criteria. The initial damaged zone grew at a constant velocity with a stress dependence ofV=V 0 σ n. The spectrum of damage morphologies that preceed crack growth consists of a leading edge of crack-like pores followed by a region of increasing fibrillation which is terminated by a region of increasing fibril fracture.
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References
M. K. V. Chan andJ. G. Williams,Polymer 24 (1983) 234.
L. Ewing, J. M. Grieg andD. Walton, Proceedings of the Sixth Plastic Symposium, Columbus, Ohio, April 1978 (American Gas Association, Arlington, USA, 1978) p. 2.
C. H. Popelar andG. H. Staab, Eighth Plastic Pipe Symposium, New Orleans, November 1983 (American Gas Association, Arlington, USA, 1983) p. 62.
C. S. Lee andM. M. Epstein,Polym. Eng. Sci. 22 (1982) 549.
F. S. Uralil andR. L. Markham, Eighth Plastic Fuel Gas Pipe Symposium New Orleans, November 1983 (American Gas Association, Arlington, USA, 1983) p. 10.
C. G. Bragaw, Proceedings of the Sixth Plastic Symposium Columbus, Ohio, April 1978 (American Gas Association, Arlington, USA, 1978) p. 36.
S. K. Bhattacharya andN. Brown, Eighth Plastic Pipe Symposium (American Gas Association, Arlington, USA, 1983) p. 58.
Idem, J. Mater. Sci. 20 (1984) 2519.
S. Bandyopadhyay andH. R. Brown, Proceedings of 3rd International Conference on mechanical Behavior of Materials, Vol. 3 (American Society of Metals, 1979).
P. C. Paris andC. G. Sih, ASTM TP No. 381 (American Society for Testing and Materials, Philadelphia, 1965) p. 30.
D. C. Bassett andA. M. Hodge,Proc. Roy. Soc. A377 (1981) 25.
K. L. Naylor andP. J. Phillips,J. Polym. Sci. 21 (1983) 2011.
J. F. Knott, “Fundamentals of Fracture Mechanics” (Butterworths, London, Boston, 1973) Chap. 5.
P. B. Bowden andJ. A. Jukes,J. Mater. Sci. 7 (1972) 52.
V. Vitek,Int. J. Fract. 13 (1977) 39.
D. S. Dugdale,J. Mech. Phys. Solids 8 (1960) 100.
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Bhattacharya, S.K., Brown, N. The initiation of crack growth in linear polyethylene. J Mater Sci 20, 2767–2775 (1985). https://doi.org/10.1007/BF00553038
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DOI: https://doi.org/10.1007/BF00553038