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

J. S. Kim; N. O. Larrosa; A. J. Horn; Y. J. Kim; R. A. Ainsworth

doi:10.1016/j.engfracmech.2017.05.047

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

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

School of Mechanical Engineering

Research output: Contribution to journal › Article › peer-review

28 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 language	English
Pages (from-to)	250-267
Number of pages	18
Journal	Engineering Fracture Mechanics
Volume	188
DOIs	https://doi.org/10.1016/j.engfracmech.2017.05.047
Publication status	Published - 2018 Feb 1

Bibliographical note

Funding Information:
The release of ductile fracture data by Tata Steel through Mr Adam Bannister is gratefully acknowledged, as are helpful discussions with the members of the R6 Panel. The authors would like to acknowledge the funding and technical support from BP through the BP International Centre for Advanced Materials (BP-ICAM) which made this research possible. Appendix A

Publisher Copyright:
© 2017 Elsevier Ltd

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

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10.1016/j.engfracmech.2017.05.047

Cite this

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title = "Notch bluntness effects on fracture toughness of a modified S690 steel at 150 °C",

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.",

keywords = "Blunt notch, Defect assessment, Ductile fracture model, Effective fracture toughness, Failure assessment diagram",

author = "Kim, {J. S.} and Larrosa, {N. O.} and Horn, {A. J.} and Kim, {Y. J.} and Ainsworth, {R. A.}",

note = "Funding Information: The release of ductile fracture data by Tata Steel through Mr Adam Bannister is gratefully acknowledged, as are helpful discussions with the members of the R6 Panel. The authors would like to acknowledge the funding and technical support from BP through the BP International Centre for Advanced Materials (BP-ICAM) which made this research possible. Appendix A Publisher Copyright: {\textcopyright} 2017 Elsevier Ltd",

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doi = "10.1016/j.engfracmech.2017.05.047",

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AU - Kim, J. S.

AU - Larrosa, N. O.

AU - Horn, A. J.

AU - Kim, Y. J.

AU - Ainsworth, R. A.

N1 - Funding Information: The release of ductile fracture data by Tata Steel through Mr Adam Bannister is gratefully acknowledged, as are helpful discussions with the members of the R6 Panel. The authors would like to acknowledge the funding and technical support from BP through the BP International Centre for Advanced Materials (BP-ICAM) which made this research possible. Appendix A Publisher Copyright: © 2017 Elsevier Ltd

PY - 2018/2/1

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N2 - 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.

AB - 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.

KW - Blunt notch

KW - Defect assessment

KW - Ductile fracture model

KW - Effective fracture toughness

KW - Failure assessment diagram

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DO - 10.1016/j.engfracmech.2017.05.047

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AN - SCOPUS:85028022491

SN - 0013-7944

VL - 188

SP - 250

EP - 267

JO - Engineering Fracture Mechanics

JF - Engineering Fracture Mechanics

ER -

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

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

Access to Document

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