Effects of in-plane and out-of-plane constraint on fracture toughness in austenitic stainless steel

Iain Palmer, Mehdi Mokhtarishirazabad, Andrew Moffat, Mahmoud Mostafavi

Research output: Chapter in Book/Report/Conference proceedingConference PaperOther

1 Citation (Scopus)

Abstract

An improved understanding of the failure behaviour of safety critical component could result in substantial benefits for industry; these include a reduction in design constraints resulting in optimised and cheaper designs, reduced risk and therefore cost. Yet surprisingly, there is little information in design and assessment codes on the behaviour of thin sections. The aim of this paper is to investigate the fracture of thin sections, with reduced out-of-plane plastic constraint, by using a unified measure of constraint. A range of single edge notched bend specimen made of stainless steel 316L were tested. The specimens had a combination of in-plane and out-of-plane constraint levels achieved through different crack lengths and thicknesses. FEA simulations of the tested specimens were conducted to estimate the crack tip stress and strain fields for each, in order to determine Rice and Tracey contour values. Using critical values of Rice and Tracey parameter and a critical area (normalised by thickness) enclosed by this parameter, toughness scaling values for low constraint specimens are calculated.

Original languageEnglish
Title of host publicationMaterials and Fabrication
PublisherAmerican Society of Mechanical Engineers (ASME)
ISBN (Electronic)9780791858974
DOIs
Publication statusPublished - 2019
Externally publishedYes
EventASME Pressure Vessels and Piping Conference (PVP) 2019 - San Antonio, United States of America
Duration: 14 Jul 201919 Jul 2019

Conference

ConferenceASME Pressure Vessels and Piping Conference (PVP) 2019
Abbreviated titlePVP 2019
Country/TerritoryUnited States of America
CitySan Antonio
Period14/07/1919/07/19

Keywords

  • Austenitic stainless steel
  • Fracture toughness
  • In-plan constraint
  • Out-ofplane constraint

Cite this