Edge chipping of brittle materials: Effect of side-wall inclination and loading angle

Herzl Chai, Brian R. Lawn

Research output: Contribution to journalArticlepeer-review

Abstract

An earlier analysis of chipping fracture in brittle solids is here extended to include the case of blocks with inclined side faces and non-normal contact loading. The simple relation PF =βKch3/2 for the critical chipping load PF in terms of indent location h and material toughness Kc is preserved, with angular coordinates simply incorporated into the β coefficient. Chipping fracture tests using a Vickers indenter near the edges of glass blocks with non-orthogonal faces is used to validate the analysis. Implications of the results in relation to practical engineering, biomechanical and anthropological structures are indicated.

Original languageEnglish
Pages (from-to)159-165
Number of pages7
JournalInternational Journal of Fracture
Volume145
Issue number2
DOIs
StatePublished - May 2007

Keywords

  • Angular coordinates
  • Brittle ceramics
  • Edge chipping
  • Inclined loading
  • Toughness
  • Vickers indentation

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