Abstract
A fatigue accelerated pipe test method has been developed which is able to quickly differentiate pipes according to their crack propagation resistance. The differences in brittle crack propagation resistance between two pipe materials was quantified and related to the specific enthalpy of damage and the dissipation coefficient via the Crack Layer Theory. These values show that the ethylene/hexene copolymer was more resistant to brittle cracking than was the ethylene/butene copolymer, because in the latter a larger percentage of the irreversible work per cycle was expended on the fracture process. The ethylene/butene copolymer also had a smaller intrinsic toughness than did the ethylene/hexene copolymer, as manifested by its lower specific enthalpy of damage. These results agree with the kinetics of crack propagation, as well as the known field performance of these two materials.
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References
A. Lustiger et al., Field Failure Reference Catalog for Polyethylene Gas Piping, First Edition, Gas Research Institute, Chicago, IL, March 1986.
J.J. Strebel and A. Moet, Journal of Materials Science 26 (1991) 5671–5680.
A. Moet, A. Chudnovsky, J.J. Strebel and K. Chaoui, Eleventh Plastic Fuel Gas Pipe Symposium (San Francisco, CA), (1989) 327–333.
A. Chudnovsky and A. Moet, Journal of Elastomers and Plastics 18 (1986) 50–55.
E.P. Tam nd G.C. Martin, Journal of Macromolecular Science-Polymer Physics Edition B 23(4–6) (1985) 415–433.
J. Botsis, A. Chudnovsky and A. Moet, International Journal of Fracture 33 (1987) 277–284.
N. Haddaoui, A. Chudnovsky and A. Moet, Polymer 27 (1986) 1377–1384.
K. Sehanobish, A. Moet and A. Chudnovsky, Polymer 28 (1987) 1315–1320.
M.L. Kasakevich, A. Moet and A. Chudnovsky, Journal of Applied Polymer Science 39 (1990) 395–413.
J. Krey, K. Friedrich and A. Moet, Polymer 29 (1988) 1433–1440.
J.M. Crissman, Reference Standard Polyethylene Resins and Piping Materials, Final Report, Gas Research Institute, Chicago (1986).
R.H. Olley, A.M. Hodge and D.C. Bassett, Journal of Polymer Science: Polymer Physics Edition 17 (1979) 627–643.
Annual Book of ASTM Standards, volume 8.04 (1988) D2837.
Annual Book of ASTM Standards, volume 8.04 (1988) D2290.
M.L. Kasakevich, A. Moet and A. Chudnovsky, Journal of Macromolecular Science-Polymer Physics Edition B 28(3–4) (1989) 433–453.
Annual Book of ASTM Standards, volume 8.04 (1988) E399.
J.J. Strebel, ‘Fatigue Crack Propagation in Medium Density Polyethylene Fuel Gas Pipes’, M.S. thesis, Case Western Reserve University, Cleveland, Ohio, January 1990.
A. Chudnovsky and A. Moet, Journal of Material Science 20 (1985) 630–635.
A. Moet, A. Chudnovsky, J.J. Strebel and K. Chaoui, A Theory for Accelerated Slow Crack Propagation in Polyethylene Fuel Pipes, 1987/1988 Annual Report, Gas Research Institute, Chicago (1988).
A. Moet, A. Chudnovsky and J.J. Strebel, Fatigue Acceleration of Slow Crack Growth in Ethylene/Hexene Copolymer Pipe, 1988/1989 Annual Report, Gas Research Institute, Chicago (1989).
A. Chudnovsky et al., Journal of Applied Physics 54(10) (1983) 5562–7.
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Strebel, J.J., Moet, A. Accelerated fatigue fracture of polyethylene pipe material: crack layer analysis. Int J Fract 54, 21–34 (1992). https://doi.org/10.1007/BF00040853
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DOI: https://doi.org/10.1007/BF00040853