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Investigation of low temperature effects on fatigue behavior of PVDF

Lookup NU author(s): Dr Abdulhamid Al-Abduljabbar, Professor Geoff Gibson


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Fatigue behavior of polyvinylidiene fluoride (PVDF) pipes is investigated under low temperatures to characterize the temperature effects. The analysis included experimental evaluation of fatigue life for test samples taken directly from the manufactured pipes used for service as opposed to compression molded compact tension samples used in previous works. In this test, short sections from an extruded pipe are used to better represent the material service conditions. A compact test chamber was designed to control the test temperature. The samples were loaded into the test rig and allowed to cool for 30 min ensuring a constant and even temperature distribution. Cooling was done in a sealed test chamber using carbon dioxide gas. Two test temperatures of -20 °C and -10 °C were chosen since they represent typical temperature during which failure occurs during actual pipe service in cold environments. Fractured surfaces were inspected and fatigue data were analyzed using a standard procedure for calculation of fatigue life with a semi-elliptical surface crack assumption was performed; from which parameters of the Paris law for fatigue fracture were obtained. Comparing the results with previous works it is found that they capture the trend of the PVDF material behavior for high temperature. © 2007 Elsevier Ltd. All rights reserved.

Publication metadata

Author(s): Al-Abduljabbar A, Melve B, Dodds N, Gibson AG

Publication type: Article

Publication status: Published

Journal: Engineering Failure Analysis

Year: 2007

Volume: 14

Issue: 8

Pages: 1594-1604

Print publication date: 01/12/2007

ISSN (print): 1350-6307

ISSN (electronic): 1873-1961

Publisher: Pergamon


DOI: 10.1016/j.engfailanal.2006.11.076


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