Towards a uniform precracking procedure for fracture toughness testing

Marc Scibetta, Enrico Lucon, Eric van Walle, Matti Valo

Research output: Contribution to journalArticleScientificpeer-review

8 Citations (Scopus)

Abstract

The precracking requirements for fracture toughness testing of metallic materials are investigated in this study.
In addition, some experiments were performed in the transition region to quantify the consequences of violating these requirements. It is found that the different standards are not consistent.
For most of the requirements some rationale can be found. Some theoretical developments were performed to justify the use of a fixed maximum stress intensity factor.
This limit is tightly related to the fracture mechanism and to the fracture process zone. From an experimental point of view, a relatively limited effect of precracking on the fracture toughness is found.
Original languageEnglish
Pages (from-to)287-296
JournalInternational Journal of Fracture
Volume117
Issue number3
DOIs
Publication statusPublished - 2002
MoE publication typeA1 Journal article-refereed

Keywords

  • Precracking
  • Master curve
  • standardisation
  • 22NiMoCr37

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