A Parametric study of the crack growth behavior of high density polyethylene based on crack layer theory

Ji Mi Lee, Byoung-Ho Choi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Due to unique characteristics of the crack growth behavior of polymers, conventional fracture mechanics approaches on the crack growth have not been very successful. Crack Layer theory (CL) can be a good theoretical approach to model the sophisticated crack growth behavior of polymers. According to CL theory, polymers have different size and shape of process zone (PZ), and, especially, in the case of high density polyethylene (HDPE), a crack commonly propagates in a discontinuous manner under fatigue and creep loading conditions. In this paper, a parametric study was performed by a computer program based on CL theory for HDPE with two general types of test specimens, i.e. single edge notched tension (SENT) specimen and compact tension (CT) specimen. The effects of key parameters, i.e. the stress ratio (R-ratio) which is defined as the ratio of minimum and maximum stress of loading, specific fracture energy, and draw stress, on the crack growth behavior of HDPE were studied.

Original languageEnglish
Title of host publicationAnnual Technical Conference - ANTEC, Conference Proceedings
PublisherSociety of Plastics Engineers
Pages945-949
Number of pages5
Volume2
EditionJanuary
Publication statusPublished - 2014
Event72nd Annual Technical Conference of the Society of Plastics Engineers: The Plastics Conference, ANTEC 2014 - Las Vegas, United States
Duration: 2014 Apr 282014 Apr 30

Other

Other72nd Annual Technical Conference of the Society of Plastics Engineers: The Plastics Conference, ANTEC 2014
CountryUnited States
CityLas Vegas
Period14/4/2814/4/30

Keywords

  • Crack Layer theory
  • CT specimen
  • Parametric study
  • Polyethylene
  • SENT specimen

ASJC Scopus subject areas

  • Polymers and Plastics
  • Chemical Engineering(all)

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