Viscoelastic model of cross-linked polyethylene including effects of temperature and crystallinity
2005 (English)In: Mechanics of time-dependant materials, ISSN 1385-2000, E-ISSN 1573-2738, Vol. 9, no 4, 225-246 p.Article in journal (Refereed) Published
Characterization of the mechanical behavior of cross-linked polyethylene (XLPE) commonly used in high voltage cable insulation was performed by an extensive set of isothermal uniaxial tensile relaxation tests. Tensile relaxation experiments were complemented by pressure-volume-temperature experiments as well as density and crystallinity measurements. Based on the experimental results, a viscoelastic power law model with four parameters was formulated, incorporating temperature and crystallinity dependence. It was found that a master curve can be developed by both horizontal and vertical shifting of the relaxation curves. The model was evaluated by making comparisons of the predicted stress responses with the measured responses in relaxation tests with transient temperature histories.
Place, publisher, year, edition, pages
2005. Vol. 9, no 4, 225-246 p.
cross-linked polyethylene, viscoelastic model, power law model, XLPE
Other Materials Engineering
IdentifiersURN: urn:nbn:se:kth:diva-5893DOI: 10.1007/s11043-005-9002-xISI: 000238138500002ScopusID: 2-s2.0-33744957680OAI: oai:DiVA.org:kth-5893DiVA: diva2:10422
QC 201009142006-06-012006-06-012010-09-14Bibliographically approved