New developments of the Wallin, Saario, Törrönen cleavage fracture model

Kim Wallin (Corresponding Author), Anssi Laukkanen

Research output: Contribution to journalArticleScientificpeer-review

30 Citations (Scopus)

Abstract

The Wallin, Saario, Törrönen (WST) model, published originally in 1984, assumes the cleavage initiators to be carbides. The preliminary trials of the model appeared promising. However, at the time, it was not considered possible to fully calibrate the model to provide actual predictions of fracture toughness based on microstructural and mechanical property information, because of lack of computational power. Today, more than 20 years later the computational means have evolved sufficiently so that a new version of the WST model can be developed. The new version is connected to a general statistical model and includes the effect of strain. It is with some success compared to actual material data, predicting the cleavage initiation location.
Original languageEnglish
Pages (from-to)3367 - 3377
Number of pages11
JournalEngineering Fracture Mechanics
Volume75
Issue number11
DOIs
Publication statusPublished - 2008
MoE publication typeA1 Journal article-refereed

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Carbides
Fracture toughness
Mechanical properties
Statistical Models

Keywords

  • Carbides
  • Cleavage fracture
  • Local approach
  • Statistical
  • ProperTune

Cite this

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title = "New developments of the Wallin, Saario, T{\"o}rr{\"o}nen cleavage fracture model",
abstract = "The Wallin, Saario, T{\"o}rr{\"o}nen (WST) model, published originally in 1984, assumes the cleavage initiators to be carbides. The preliminary trials of the model appeared promising. However, at the time, it was not considered possible to fully calibrate the model to provide actual predictions of fracture toughness based on microstructural and mechanical property information, because of lack of computational power. Today, more than 20 years later the computational means have evolved sufficiently so that a new version of the WST model can be developed. The new version is connected to a general statistical model and includes the effect of strain. It is with some success compared to actual material data, predicting the cleavage initiation location.",
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New developments of the Wallin, Saario, Törrönen cleavage fracture model. / Wallin, Kim (Corresponding Author); Laukkanen, Anssi.

In: Engineering Fracture Mechanics, Vol. 75, No. 11, 2008, p. 3367 - 3377.

Research output: Contribution to journalArticleScientificpeer-review

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AU - Laukkanen, Anssi

PY - 2008

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AB - The Wallin, Saario, Törrönen (WST) model, published originally in 1984, assumes the cleavage initiators to be carbides. The preliminary trials of the model appeared promising. However, at the time, it was not considered possible to fully calibrate the model to provide actual predictions of fracture toughness based on microstructural and mechanical property information, because of lack of computational power. Today, more than 20 years later the computational means have evolved sufficiently so that a new version of the WST model can be developed. The new version is connected to a general statistical model and includes the effect of strain. It is with some success compared to actual material data, predicting the cleavage initiation location.

KW - Carbides

KW - Cleavage fracture

KW - Local approach

KW - Statistical

KW - ProperTune

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