Failure assessment diagram analysis of high density polyethylene pipes

Jae Jun Han, Ho Wan Ryu, Yun Jae Kim, Jong Sung Kim, Young Jin Oh, Heung Bae Park

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

This paper presents an analysis of failure assessment diagram for PE4710 grade high density polyethylene pipes, which are recently concerned to use in the nuclear industry. Available test data of tensile, single edge notched tension specimens and pressurised pipes are summarised and suitably characterised for use in the failure assessment diagram in R6 procedure. Critical crack lengths and failure mode for the pressurised pipes and single edge notched tension specimens are determined under sustained load and compared with test results. Based on the concept of linear elastic fracture mechanics, a slow crack growth rate of PE4710 at 95°C is obtained excluding crack initiation time. To consider the effect of temperature on slow crack growth rate, a shift method is introduced. Remaining life is calculated against the crack margin and compared with the failure time.

Original languageEnglish
Pages (from-to)4929-4938
Number of pages10
JournalJournal of Mechanical Science and Technology
Volume28
Issue number12
DOIs
Publication statusPublished - 2014 Jan 1
Externally publishedYes

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Keywords

  • Failure assessment diagram
  • High density polyethylene
  • Life assessment
  • PE pipes
  • PE4710
  • Shift function method
  • Single-edge-notch tension specimen
  • Slow crack growth

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering

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