Evaluation of ductile tearing resistance of dual-phase DP 780 grade automotive steel sheet from essential work of fracture (EWF) tests

Riddhi Sarkar, Sayan Kalyan Chandra, Partha Sarathi De, P. C. Chakraborti, S. K. Ray

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)

Abstract

The Essential Work of Fracture (EWF) method is adopted to study the ductile tearing resistance of Dual-Phase steel (DP 780) sheet of 1 mm nominal thickness. All the three characterizing parameters, namely EWF, estimate of crack tip opening displacement (CTOD) for crack initiation and crack tip opening angle (CTOA), that can be determined by the EWF testing paradigm have been examined. It is concluded that, of these three parameters, the CTOA estimated by this easy and rapid procedure is the best choice both in terms of statistical robustness and for potential application in integrity assessment.

Original languageEnglish
Article number102278
JournalTheoretical and Applied Fracture Mechanics
Volume103
Early online date19 Jun 2019
DOIs
Publication statusPublished - Oct 2019
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2019

Funder

Funding Information:
The authors acknowledge M/s TATA Steel, India for providing the test material. SKR acknowledges the Ministry of Steel (Government of India) for financial support during the course of this investigation. RS acknowledges the fellowship received from Centre of Excellence, Technical Education Quality Improvement Programme. Jadavpur University, Kolkata for carrying out the present investigation.

Keywords

  • CTOA
  • CTOD
  • DENT specimens
  • Dual-phase steel
  • EWF method

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering
  • Applied Mathematics

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