Effect of specimen size on thermal shock properties of an alumina

Chih Kuang Lin, Tsung Chih Kuo

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

This study investigated the degradation in mechanical properties of an alumina subjected to thermal shock loading by systematic experiments on bend-bar specimens of two sizes, 3 × 4 × 45 mm and 9 × 12 × 45 mm. ΔTc values for the large and small specimens were found to be 175 and 200 °C, respectively. The reduction in thermal shock resistance with increasing sample size ean be well described by the thermal elastic and fracture energy theories. However, if the size effect on the initial, unshocked fracture strength is considered, the size effect on the transport of heat during quench test might play a less important role in reducing the thermal shock resistance of large specimen.

Original languageEnglish
Pages (from-to)599-602
Number of pages4
JournalKey Engineering Materials
Volume132-136
StatePublished - 1997

Keywords

  • Alumina
  • Size effect
  • Thermal shock

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