Knoop and Vickers Indentation in Ceramics Analyzed as a Three‐Dimensional Fracture

Leon M Keer*, THOMAS N. FARRIS, JUNG‐CHUAN ‐C LEE

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

16 Scopus citations

Abstract

A three‐dimensional fracture analysis is applied to the Knoop and Vickers indentation fracture of ceramics. A brief discussion of the accuracy of the analysis applied to model the step load on the crack face caused by the residual stresses is given. A study is made of the effect of the elongated plastic zone in Knoop indentation on the unloaded radial fracture. It is shown that for small indentation loads the published experimental data can be verified by varying the depth reached by the semielliptical plastic zone with given surface length. An analysis and interpretation of the interaction between the two halfpenny‐shaped radial cracks induced by Vickers indentation is also given.

Original languageEnglish (US)
Pages (from-to)392-396
Number of pages5
JournalJournal of the American Ceramic Society
Volume69
Issue number5
DOIs
StatePublished - Jan 1 1986

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry

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