Thermal shock and fatigue behavior of ceramic tubes

A. E. Segall, J. R. Hellmann, R. E. Tressler

Research output: Chapter in Book/Report/Conference proceedingConference contribution

18 Scopus citations

Abstract

A narrow circumferential helium quench was used to thermally shock and fatigue internally heated alumina, reaction bonded, and sintered alpha silicon carbide tubes at 500°C and 1000°C. During these tests, transient temperature measurements required for thermal and stress-profile calculations were obtained through the use of micro-thermocouples positioned along the internal surface of the tubes. Acoustic emissions were also employed for in situ monitoring of crack initiation and propagation of the resident flaw populations during the single and repeated (up to 5) thermal shocks. Post-quench inspections and destructive burst tests were used to correlate the existence, extent, and statistical (Weibull) nature of the damage induced by the cycling. Results indicated progressive strength degradation in alumina tubes with repeated thermal cycles. In contrast, the thermally-cycled silicon carbide samples either showed no damage at all, or suffered minimal progressive strength degradation after the first cycle.

Original languageEnglish (US)
Title of host publicationReliability, Stress Analysis, and Failure Prevention
EditorsMo Shahinpoor, H.S. Tzou
PublisherPubl by ASME
Pages81-91
Number of pages11
Volume55
ISBN (Print)0791811727
StatePublished - 1993
Event14th Biennial Conference on Mechanical Vibration and Noise - Albuquerque, NM, USA
Duration: Sep 19 1993Sep 22 1993

Other

Other14th Biennial Conference on Mechanical Vibration and Noise
CityAlbuquerque, NM, USA
Period9/19/939/22/93

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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