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

Research output: Contribution to journalArticle

Original languageEnglish
JournalEngineering Fracture Mechanics
Early online date23 Aug 2017
DateAccepted/In press - 22 May 2017
DateE-pub ahead of print (current) - 23 Aug 2017


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.

    Research areas

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

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    Rights statement: This is the author accepted manuscript (AAM). The final published version (version of record) is available online via Elsevier at Please refer to any applicable terms of use of the publisher.

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