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Journal of Nondestructive Evaluation

, Volume 8, Issue 1, pp 1–12 | Cite as

Acoustic emission from crack growth in an advanced zirconia refractory under thermal shock

  • Krzysztof J. Konsztowicz
  • Denise Fontaine
Article

Abstract

Crack initiation and growth during the thermal shock tests of a partially stabilized zirconia advanced refractory were investigated by the analysis of acoustic emission (AE) amplitudes. The growth of cracks that were detected by AE was systematically monitored by SEM observations as increasingly severe thermal shocks were applied. The measurements of strength loss after thermal cycling in the ribbon test with various applied temperature differentials correlated with continuous monitoring by acoustic emission and confirmed the effects of microcrack growth on the resistance to thermal shock damage.

Key words

crack growth thermal shock acoustic emission amplitude distributions ribbon test advanced zirconia refractory 

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Copyright information

© Plenum Publishing Corporation 1989

Authors and Affiliations

  • Krzysztof J. Konsztowicz
    • 1
  • Denise Fontaine
    • 2
  1. 1.National Research Council of CanadaHalifax
  2. 2.Ecole Polytechnique de Montréal

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