Micromechanics of the deformation and failure kinetics of semicrystalline polymers

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Abstract

An elasto-viscoplastic two-phase composite inclusion-based model for the mechanical performance of semicrystalline materials has previously been developed. This research focuses on adding quantitative abilities to the model, in particular for the stress-dependence of the rate of plastic deformation, referred to as the yield kinetics. A key issue in achieving that goal is the description of the rate-dependence of slip along crystallographic planes. The model is used to predict time-to-failure for a range of static loads and temperatures. Application to oriented materials shows a distinct influence of individual slip systems.

Original languageEnglish
Title of host publicationConference Proceedings of the Society for Experimental Mechanics Series
Pages1-7
Number of pages7
Volume2
DOIs
Publication statusPublished - 2014
Event2013 Annual Conference on Experimental and Applied Mechanics - Lombard, IL, United States
Duration: 3 Jun 20135 Jun 2013

Conference

Conference2013 Annual Conference on Experimental and Applied Mechanics
CountryUnited States
CityLombard, IL
Period3/06/135/06/13

Keywords

  • Micromechanical modelling
  • Polyethylene
  • Semicrystalline polymers
  • Structure-property relation
  • Yield kinetics

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