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An automated portable multiaxial pressure test rig for qualifications of glass/epoxy composite pipes

Lookup NU author(s): Professor Geoffrey Gibson


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© 2018 Walter de Gruyter GmbH, Berlin/Boston. An automated multiaxial cyclic loading pressure testing rig was developed as an alternative to the existing short-term test procedure specified by ISO 14692 and ASTM D2992. Conventionally, 14 months are required to estimate the residual properties at the end of expected life (20-50 years). The test periods and costs associated with this longterm test are high. To resolve this, a novel rig was developed based on the ultimate elastic wall stress (UEWS) algorithm, allowing five multiaxial stress ratios to be tested. The test involved the cyclic pressurizing of the pipe with 1-min of pressure and 1-min of zero pressure. The test rig was tested under five stress ratios using glass-epoxy composite pipes with winding angles of [±45°]4, [±55°]4 and [±63°]4. The rig is capable of testing both static and cyclic pressure loading, thereby reducing the test period and related costs. The results provide a more realistic failure envelope.

Publication metadata

Author(s): Krishnan P, Majid MSA, Yi AJ, Afendi M, Yaacob S, Gibson AG

Publication type: Article

Publication status: Published

Journal: Science and Engineering of Composite Materials

Year: 2018

Volume: 25

Issue: 2

Pages: 243-252

Print publication date: 28/03/2018

Online publication date: 17/08/2016

Acceptance date: 18/06/2016

ISSN (print): 0792-1233

ISSN (electronic): 2191-0359

Publisher: Walter de Gruyter GmbH


DOI: 10.1515/secm-2016-0036


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