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Cleavage fracture assessment for surface-cracked plates fabricated from high strength steels

Journal Article


Abstract


  • This paper presents a combined experimental and numerical investigation to assess the probability of cleavage fracture for surface-cracked plates, using the Weibull stress framework. The proposed procedure defines a critical crack-front segment as the fracture initiation zone using the computed energy release rate. The Weibull-stress based local approach introduces a modified constraint correction function, which allows bidirectional scaling of the fracture toughness in surface-cracked specimens and the idealized 1T small-scale yielding condition. The proposed procedure predicts closely the probability of fracture for surface-cracked specimens made of three different types of steel materials.

UOW Authors


  •   Chen, Shuang (external author)
  •   Qian, Xudong (external author)
  •   Ahmed, Aziz

Publication Date


  • 2016

Citation


  • Chen, S., Qian, X. & Ahmed, A. (2016). Cleavage fracture assessment for surface-cracked plates fabricated from high strength steels. Engineering Fracture Mechanics, 161 1-20.

Scopus Eid


  • 2-s2.0-84965138109

Has Global Citation Frequency


Number Of Pages


  • 19

Start Page


  • 1

End Page


  • 20

Volume


  • 161

Place Of Publication


  • United Kingdom

Abstract


  • This paper presents a combined experimental and numerical investigation to assess the probability of cleavage fracture for surface-cracked plates, using the Weibull stress framework. The proposed procedure defines a critical crack-front segment as the fracture initiation zone using the computed energy release rate. The Weibull-stress based local approach introduces a modified constraint correction function, which allows bidirectional scaling of the fracture toughness in surface-cracked specimens and the idealized 1T small-scale yielding condition. The proposed procedure predicts closely the probability of fracture for surface-cracked specimens made of three different types of steel materials.

UOW Authors


  •   Chen, Shuang (external author)
  •   Qian, Xudong (external author)
  •   Ahmed, Aziz

Publication Date


  • 2016

Citation


  • Chen, S., Qian, X. & Ahmed, A. (2016). Cleavage fracture assessment for surface-cracked plates fabricated from high strength steels. Engineering Fracture Mechanics, 161 1-20.

Scopus Eid


  • 2-s2.0-84965138109

Has Global Citation Frequency


Number Of Pages


  • 19

Start Page


  • 1

End Page


  • 20

Volume


  • 161

Place Of Publication


  • United Kingdom