A loss of constraint assessment using δ∗-π∗approach to describe the effect of crack depth on reference transition temperature T0

Forskningsoutput: TidskriftsbidragArtikel i vetenskaplig tidskrift

Abstract

The assessment of fracture behaviour of ferritic/ferritic martensitic steels in Ductile to Brittle Transition (DBT) region iscrucial for shallower cracks. In this work the fracture behavior of In-RAFM steels isinvestigated with systematically varying a/W using Master Curve approach. This a/W effect is investigated using σ∗-V∗approach by calculating the active volume at simulated crack front. It is observed that the fitting parameter of σ∗-V∗approach is in direct correlation with changing constraint parameter ΔT stress . The constraint effect with varying crack depth is also captured by a novel constraint parameter referred as Weibull triaxiality.

Detaljer

Författare
  • Abhishek Tiwari
  • R. N. Singh
  • Per Ståhle
  • J. K. Chakravartty
Enheter & grupper
Externa organisationer
  • Bhabha Atomic Research Centre
Forskningsområden

Ämnesklassifikation (UKÄ) – OBLIGATORISK

  • Metallurgi och metalliska material
  • Teknisk mekanik

Nyckelord

  • Loss of constraint, crack depth, transition temperature
Originalspråkengelska
Sidor (från-till)690-696
Antal sidor7
TidskriftProcedia Structural Integrity
Volym2
StatusPublished - 2016 jan 1
PublikationskategoriForskning
Peer review utfördJa
Evenemang21st European Conference on Fracture, ECF 2016 - Catania, Italien
Varaktighet: 2016 jun 202016 jun 24
Konferensnummer: 21