Ductile-brittle fracture transition as a result of increasing in-plane constraint in a medium carbon steel

Shang Xian Wu, Yiu Wing Mai, Brian Cotterell

Research output: Journal article publicationConference articleAcademic researchpeer-review

3 Citations (Scopus)

Abstract

Crack-tip opening displacement (CTOD) tests and large deformation finite element analyses were conducted for double-edge notched tension specimens, single-edge notched tension specimens, three-point bend specimens and center-cracked tension specimens. Results of the CTOD tests suggest that the fracture toughness of the material decreases and a ductile-brittle fracture transition occurs as the in-plane plastic constraint of the specimens increases. Finite element analyses on the other hand indicate that the maximum achievable tensile stress outside the finite strain zone ahead of the crack tip increases with increasing plastic constraint.

Original languageEnglish
Pages (from-to)376-386
Number of pages11
JournalASTM Special Technical Publication
Issue number1207
Publication statusPublished - Dec 1995
Externally publishedYes
EventProceedings of the 24th National Symposium on Fracture Mechanics - Gatlinburg, TX, USA
Duration: 30 Jun 19922 Jul 1992

ASJC Scopus subject areas

  • General Engineering

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