Critical status of crack growth in chevron-notch specimens of elastic-plastic materials

Y. S. Cheng, W. H. Douglas

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

In this study the emergence of the critical status of crack growth in the chevron-notch fracture test on elastic-plastic materials is discussed. The theoretical analysis and experimental results showed that the critical crack length for elastic-plastic materials is not a constant, and that it is not only a function of material properties, but also a function of the speed of crack growth. In particular, it is shown theoretically that for elastic-plastic materials the critical status of crack growth often occurs after the peak load.

Original languageEnglish (US)
Pages (from-to)343-353
Number of pages11
JournalEngineering Fracture Mechanics
Volume61
Issue number3-4
DOIs
StatePublished - Sep 1 1998

Keywords

  • Chevron-notch fracture test
  • Critical crack length
  • Critical status of crack growth
  • Fracture toughness of elastic-plastic materials

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