Lifetime assessment of load-bearing polymer glasses : an analytical framework for ductile failure

H.A. Visser, T.C. Bor, M. Wolters, T.A.P. Engels, L.E. Govaert

Onderzoeksoutput: Bijdrage aan tijdschriftTijdschriftartikelAcademicpeer review

30 Citaten (Scopus)
16 Downloads (Pure)

Samenvatting

The most widespread application of polymers in structural applications is their useas pipe material for e.g. gas distribution systems. Pipes have a design lifetime oftypically 50 years, which rules out real-time lifetime assessment methods. Here, anengineering approach is presented, whichmakes it possible to predict long-term ductilefailure of loaded glassy polymers based on short-term tests. The approach is basedupon the hypothesis that failure is governed by accumulation of plastic deformation upto a critical strain. A pressure-modified Eyring relation is employed to calculate theaccumulation of plastic strain for any simple loading geometry. It is demonstrated that the approach can produce accurate quantitative time-to-failure predictions for loadedPC specimens and uPVC pipe segments.
Originele taal-2Engels
Pagina's (van-tot)637-651
Aantal pagina's15
TijdschriftMacromolecular Materials and Engineering
Volume295
Nummer van het tijdschrift7
DOI's
StatusGepubliceerd - 2010

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