Lifetime prediction of structural ceramics by dynamic fatigue

Kyu Hyoung Lee, Hong Lim Lee

Research output: Contribution to journalArticle

Abstract

The dynamic fatigue behaviour of Al2O3 structural ceramics was studied by loading the stress on the specimen at a constant stress rate. The fracture strength of Al2O3 specimens under dynamic mode was constant up to a critical stress and then the lifetime abruptly decreased to zero as predicted theoretically for both the single cycle and the repeated loading. The material constant A was nearly constant and has no relation with loading mode and down speed for unnotched and notched specimen. The fracture strength obtained by theoretical calculation from the constants n and A was in good agreement with the measured value.

Original languageEnglish
Pages (from-to)61-66
Number of pages6
JournalJournal of Ceramic Processing Research
Volume2
Issue number2
Publication statusPublished - 2001 Dec 1

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites

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