Chapter 7. Fracture Toughness of Porous Cordierite

  1. Rajan Tandon,
  2. Andrew Wereszczak and
  3. Edgar Lara-Curzio
  1. Amit Shyam,
  2. Edgar Lara-Curzio,
  3. Hua-Tay Lin and
  4. Randy J. Parten

Published Online: 27 MAR 2008

DOI: 10.1002/9780470291313.ch7

Mechanical Properties and Performance of Engineering Ceramics II: Ceramic Engineering and Science Proceedings, Volume 27, Issue 2

Mechanical Properties and Performance of Engineering Ceramics II: Ceramic Engineering and Science Proceedings, Volume 27, Issue 2

How to Cite

Shyam, A., Lara-Curzio, E., Lin, H.-T. and Parten, R. J. (2006) Fracture Toughness of Porous Cordierite, in Mechanical Properties and Performance of Engineering Ceramics II: Ceramic Engineering and Science Proceedings, Volume 27, Issue 2 (eds R. Tandon, A. Wereszczak and E. Lara-Curzio), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470291313.ch7

Author Information

  1. Metals & Ceramics Division Oak Ridge National Laboratory Oak Ridge, TN – 37831

Publication History

  1. Published Online: 27 MAR 2008
  2. Published Print: 1 JAN 2006

ISBN Information

Print ISBN: 9780470080528

Online ISBN: 9780470291313

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Keywords:

  • porous cordierite;
  • nox;
  • dpfs;
  • sem;
  • cordierite

Summary

A procedure was developed to prepare test specimens of porous cordierite to determine the fracture toughness of this material by the double–torsion test method. 300–um thick test specimens were obtained from the walls of diesel particulate filters through a sequence of dry cutting/grinding operations using diamond–impregnated wheels. The fracture toughness of porous cordierite was found to be 0.46 ± 0.03 MPaMrVm and it was found that the fracture process was strongly influenced by the microstructure of the material. The procedures for test specimen preparation and fracture toughness testing are discussed in detail.