Numerical simulation of continuous to discontinuous slow crack growth mode transition of high-density polyethylene using modified crack layer theory

Jung Wook Wee, Byoung Ho Choi, Haiying Zhang, Wen Zhou, Alexander Chudnovsky

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

Abstract

It has been widely observed that the pipe grade high-density polyethylene (HDPE) reveals the discontinuous slow crack growth (SCG) behavior even under the creep loading condition. On the contrary, at the relatively lower level of stress intensity factor (SIF), the crack grows rather continuously. Such characteristics lead to the continuous to discontinuous SCG mode transition behavior when the crack grows from the low SIF level. In this paper, the well-known continuous to discontinuous mode transition behavior during the single SCG process of HDPE is fundamentally solved by modifying the current crack layer (CL) theory. By introducing the suggested energy release rate (ERR)-augmented activation energy reduction concept, the experimentally observed SCG mode transition behavior under the creep loading was successfully simulated. The suggested model is expected to broaden the applicability of the CL model including very low SIF range.

Original languageEnglish
Title of host publicationSPE ANTEC 2020
Subtitle of host publicationThe Annual Technical Conference for Plastic Professionals
PublisherSociety of Plastics Engineers
Pages698-701
Number of pages4
ISBN (Electronic)9781713821182
Publication statusPublished - 2020
EventSPE ANTEC 2020: Annual Technical Conference for Plastic Professionals - Virtual, Online
Duration: 2020 Mar 302020 May 5

Publication series

NameAnnual Technical Conference - ANTEC, Conference Proceedings
Volume2

Conference

ConferenceSPE ANTEC 2020: Annual Technical Conference for Plastic Professionals
CityVirtual, Online
Period20/3/3020/5/5

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Polymers and Plastics

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