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Rapid crack propagation in pressurised plastic pipe—II. Critical pressures for polyethylene pipe

✍ Scribed by P. Yayla; P.S. Leevers

Publisher
Elsevier Science
Year
1992
Tongue
English
Weight
474 KB
Volume
42
Category
Article
ISSN
0013-7944

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✦ Synopsis

A

new small-scale test method has been developed for generating steady-state rapid crack propagation in plastic pipe. Using this method, a series of exploratory tests are used to investigate the variation in critical pressure (i.e. the threshold of crack self-arrest) with parameters which are seen to influence it in full-scale tests: temperature, pipe wall thickness, decompression properties of the pressurising medium. and external constraint. Scaling rules relating small-and full-scale results for different diameters are discussed using British Gas full-scale test data, and in the light of thickness effects measured in small-scale tests.

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