Thermal fatigue resistance of open cell ceramic foams

Venkata R. Vedula, David J. Green, John R. Hellmann

Research output: Contribution to journalArticle

21 Scopus citations

Abstract

A variety of open cell ceramic foams were subjected to rapid thermal cycles by infrared heating and forced air cooling to study the thermal fatigue behaviour of these materials. After cycling, the extent of damage in the samples was determined by measuring the elastic modulus using dynamic resonance (non-destructive test) and the retained strength in three-point bending (destructive test). It was found that the retained elastic modulus and strength gradually decreased with an increase in the number of cycles, followed by a saturation behaviour indicating a damage accumulation mechanism. The extent of damage was found to depend on the cellular structure parameters (i.e. cell size and density), composition, as well as thermal cycling variables, such as maximum temperature, cooling rate, etc.

Original languageEnglish (US)
Pages (from-to)2073-2080
Number of pages8
JournalJournal of the European Ceramic Society
Volume18
Issue number14
StatePublished - Dec 1998

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Materials Chemistry

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