High strain rate normal indentation of ceramics: Implications for material removal mechanisms

Ghatu Subhash*, Brian J. Koeppel, Richard J. Anton, Yonggang Y. Huang, Abhijit Chandra

*Corresponding author for this work

Research output: Contribution to journalArticle

Abstract

The static indentation fracture mechanics approach does not fully capture the rate sensitive nature of failure behavior in ceramics. Accordingly, a dynamic indentation technique was developed to investigate material removal mechanisms at strain rates similar to those encountered in realistic grinding situations. The technique is designed to deliver a single indentation load of duration 100 microseconds. Compared to static loading, it is observed that lateral cracking is promoted under dynamic loading rates. The implications of dynamic loading on the material removal mechanisms are discussed.

Original languageEnglish (US)
Pages (from-to)417-424
Number of pages8
JournalAmerican Society of Mechanical Engineers, Materials Division (Publication) MD
Volume80
StatePublished - Dec 1 1997

ASJC Scopus subject areas

  • Engineering(all)

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