Lifetime Assessment of Load-Bearing Polymer Glasses: The Influence of Physical Ageing

Hendrikus A. Visser*, Teunis C. Bor, Mannes Wolters, Joris G.F. Wismans, Leon E. Govaert

*Corresponding author for this work

    Research output: Contribution to journalArticleAcademicpeer-review

    13 Citations (Scopus)
    35 Downloads (Pure)

    Abstract

    The timescale at which ductile failure occurs in loaded glassy polymers can be successfully predicted using the engineering approach presented in a previous publication. In this paper the influence of progressive physical ageing on the plastic deformation behaviour of unplasticised poly(vinyl chloride) (uPVC) is characterised and incorporated in the existing approach. With the modification it is possible to quantitatively predict long-term failures which show a so-called endurance limit. The predictions are compared with failure data of uPVC specimens which were subjected to constant or dynamic loads. In dynamic loading conditions a second type of failure mode was observed: fatigue crack growth. A brief study on the influence of the frequency and stress ratio of the applied stress signal shows that crack growth failure is not expected to occur within experimentally reasonable timescales for constant loading conditions.
    Original languageEnglish
    Pages (from-to)1066-1081
    JournalMacromolecular materials and engineering
    Volume295
    Issue number12
    DOIs
    Publication statusPublished - 2010

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