Notch bluntness effects on fracture toughness of a modified S690 steel at 150 °C

J. S. Kim, N. O. Larrosa, A. J. Horn, Yun Jae Kim, R. A. Ainsworth

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

This paper addresses the effect of blunt defects on the structural integrity assessment of steels. Smooth tensile, notched bar tensile and multi-specimen single edge notched bend tests with various notch acuities have been performed and show an increase in effective ductile fracture toughness with increasing notch radius. A ductile fracture model has been shown to be capable of predicting the specimen responses including the local variation of ductile crack extension through the thickness. An empirical fit developed to describe the effect of notch radius on cleavage fracture toughness has been examined and found to be also capable of describing the effect of notch radius on ductile fracture toughness.

Original languageEnglish
Pages (from-to)250-267
Number of pages18
JournalEngineering Fracture Mechanics
Volume188
DOIs
Publication statusPublished - 2018 Feb 1
Externally publishedYes

Fingerprint

Ductile fracture
Steel
Fracture toughness
Structural integrity
Cracks
Defects

Keywords

  • Blunt notch
  • Defect assessment
  • Ductile fracture model
  • Effective fracture toughness
  • Failure assessment diagram

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Notch bluntness effects on fracture toughness of a modified S690 steel at 150 °C. / Kim, J. S.; Larrosa, N. O.; Horn, A. J.; Kim, Yun Jae; Ainsworth, R. A.

In: Engineering Fracture Mechanics, Vol. 188, 01.02.2018, p. 250-267.

Research output: Contribution to journalArticle

Kim, J. S. ; Larrosa, N. O. ; Horn, A. J. ; Kim, Yun Jae ; Ainsworth, R. A. / Notch bluntness effects on fracture toughness of a modified S690 steel at 150 °C. In: Engineering Fracture Mechanics. 2018 ; Vol. 188. pp. 250-267.
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