Discussion: Strength-to-fracture scaling in scratching

Ange Therese Akono*, Franz Josef Ulm, Zdeněk P. Bažant

*Corresponding author for this work

Research output: Contribution to journalComment/debatepeer-review

31 Scopus citations

Abstract

In their paper, Lin and Zhou (2013) add a new dimension to the scratch test analysis, challenging the applicability of Linear Elastic Fracture Mechanics to scratch tests. The question raised is how to integrate the three-dimensionality of scratch tests into the energetic Size Effect Law (SEL) formulated by Bažant for quasi-brittle materials. We show that Lin and Zhou's analysis, although relevant is incomplete, as it neglects the blade width, which is critical for the fracture property assessment. In return, if the blade width is properly taken into account, the SEL here proposed is a formidable means to ascertain the fracture toughness from scratching.

Original languageEnglish (US)
Pages (from-to)21-28
Number of pages8
JournalEngineering Fracture Mechanics
Volume119
DOIs
StatePublished - Mar 2014

Keywords

  • Ductile-to-brittle transition
  • Fracture mechanics
  • J-Integral
  • Scratch tests

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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