ISSN: 1945-7553
CODEN: JTEVAB
Page Count: 4

Crack Growth in High-Density Polyethylene Pipes

Gradin, PA
Research engineers, Det norske Veritas, Høvik,

Arve, E
Research engineers, Det norske Veritas, Høvik,

Abstract

To investigate the applicability of a theory developed by Schapery to crack growth in thermoplastic pipes, experiments were performed on high-density polyethylene (HDPE) pipes. In the experiments the pipes (with existing through-the-thickness cracks) were loaded by an internal pressure and the time-dependent crack length was measured. This was done at three different temperatures, 20, 30, and 80°C and for two cases of crack orientation, axial and circumferential. It was observed that the theory agreed reasonably well with the experimental data.

Keywords:
crack propagation, pipes, polyethylene, viscoelastic pipes, axial and circumferential cracks

Paper ID: JTE10742J
DOI: 10.1520/JTE10742J
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