Failure Mechanisms During Thermal Shock Testing of Advanced Ceramics by Means of Lamp Irradiation

  1. Prof. Dr. G. Müller
  1. V. Knoblauch1,
  2. G. A. Schneider2,
  3. W. Dreßler3,
  4. H. Böder3,
  5. G. Schneider4,
  6. R. Speicher1 and
  7. L. Jeannel5

Published Online: 27 APR 2006

DOI: 10.1002/3527607293.ch57

Ceramics - Processing, Reliability, Tribology and Wear, Volume 12

Ceramics - Processing, Reliability, Tribology and Wear, Volume 12

How to Cite

Knoblauch, V., Schneider, G. A., Dreßler, W., Böder, H., Schneider, G., Speicher, R. and Jeannel, L. (2006) Failure Mechanisms During Thermal Shock Testing of Advanced Ceramics by Means of Lamp Irradiation, in Ceramics - Processing, Reliability, Tribology and Wear, Volume 12 (ed G. Müller), Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim, FRG. doi: 10.1002/3527607293.ch57

Editor Information

  1. Fraunhofer-Institut für Silicatforschung, Neunerplatz 2, 97082 Würzburg, Germany

Author Information

  1. 1

    Robert Bosch GmbH, Technical University Hamburg-Harburg/Advanced Ceramics Group, Germany

  2. 2

    Technical University Hamburg-Harburg/Advanced Ceramics Group, Germany

  3. 3

    Robert Bosch GmbH, Stuttgart, Germany

  4. 4

    Polytechnic Aalen, Aalen, Germany

  5. 5

    Institut Français de Mécanique Avancée, Frankreich

Publication History

  1. Published Online: 27 APR 2006
  2. Published Print: 27 JUN 2000

Book Series:

  1. EUROMAT 99

ISBN Information

Print ISBN: 9783527301942

Online ISBN: 9783527607297

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Keywords:

  • lamp irradiation;
  • thermal shock testing;
  • advanced ceramics

Summary

Thermal shock behaviour of tape-cast Y-PSZ substrate is characterized by lamp irradiation, i.e. the generation of strong lateral temperature gradients in thin circular discs by rapid heating with a high power halogen lamp while in situ measuring the temperature fields with a high speed thermal imaging system. Special attention is paid on failure mechanisms of the samples. Numerical simulation of the specimens deformation indicates buckling of the discs due to radial compression stresses. This causes significant bending components superposing the in-plane thermal stress. Hence, depending on the geometry of the samples marked mistakes in the characterization of the thermal shock behaviour are made if buckling is not considered. In situ off-plane deformation measurements with a Laser-Doppler-Interferometer confirm the theory and verify the Finite-Element simulation. An approach is proposed how buckling has to be taken into account both, in the field of experiment and simulation.