Chapter 32. Through Thickness Modulus (E33) of Ceramic Matrix Composites: Mechanical Test Method Development

  1. Rajan Tandon,
  2. Andrew Wereszczak and
  3. Edgar Lara-Curzio
  1. G. Ojard2,
  2. T. Barnett3,
  3. A. Caloraino4,
  4. Y. Gowayed5,
  5. U. Santhosh6,
  6. J. Ahmaad6,
  7. R. Miller2 and
  8. R. John1

Published Online: 27 MAR 2008

DOI: 10.1002/9780470291313.ch32

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

Ojard, G., Barnett, T., Caloraino, A., Gowayed, Y., Santhosh, U., Ahmaad, J., Miller, R. and John, R. (2006) Through Thickness Modulus (E33) of Ceramic Matrix Composites: Mechanical Test Method Development, 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.ch32

Author Information

  1. 1

    Air Force Research Lab Wright–Patterson Air Force Base, OH

  2. 2

    Pratt & Whitney 400 Main Street East Hartford, CT 06108

  3. 3

    Southern Research Institute 757 Tom Martin Drive irmingham, AL 35211

  4. 4

    NASA–Glenn Research Center Cleveland, OH

  5. 5

    Auburn University Auburn, AL 36849

  6. 6

    Research Applications, Inc. San Diego, CA

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:

  • longitudinal;
  • velocity;
  • wave;
  • ultrasonic;
  • propagating

Summary

With the ever–increasing interest in ceramic matrix composites for advanced engineering applications, better understanding of key physical properties are needed. One of the crucial properties is the through thickness modulus of the composite. Although the in–plane and off axis moduli (E11 Gi2) are easily measured through standard test methods and have been validated in designs, this is not the case for the through thickness modulus (E33). A test method is presented to define this property and remove assumptions about its value for ceramic matrix composite systems. In this technique, several disks of the material are stacked and tested in compression eliminating the concern about the composite being too thin to test mechanically. Results for Melt Infiltrated SiC/SiC composite and lessons learned through the development effort will be shown. Correlation and comparison to ultrasonic measurements will be made.