Chapter 18. Ultrasonic Velocity Technique for Monitoring Property Changes in Fiber-Reinforced Ceramic Matrix Composites

  1. John B. Wachtman Jr
  1. H. E. Kautz1 and
  2. R. T. Bhatt2

Published Online: 28 MAR 2008

DOI: 10.1002/9780470313831.ch18

Proceedings of the 15th Annual Conference on Composites and Advanced Ceramic Materials, Part 1 of 2: Ceramic Engineering and Science Proceedings, Volume 12, Issue 7/8

Proceedings of the 15th Annual Conference on Composites and Advanced Ceramic Materials, Part 1 of 2: Ceramic Engineering and Science Proceedings, Volume 12, Issue 7/8

How to Cite

Kautz, H. E. and Bhatt, R. T. (1991) Ultrasonic Velocity Technique for Monitoring Property Changes in Fiber-Reinforced Ceramic Matrix Composites, in Proceedings of the 15th Annual Conference on Composites and Advanced Ceramic Materials, Part 1 of 2: Ceramic Engineering and Science Proceedings, Volume 12, Issue 7/8 (ed J. B. Wachtman), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470313831.ch18

Author Information

  1. 1

    NASA Lewis Research Center Cleveland, OH 44135

  2. 2

    Propulsion Directorate U.S. Army Aviation Research and Technology Activity—A VSCOM NASA Lewis Research Center Cleveland, OH 44135

Publication History

  1. Published Online: 28 MAR 2008
  2. Published Print: 1 JAN 1991

ISBN Information

Print ISBN: 9780470375099

Online ISBN: 9780470313831

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Keywords:

  • ultrasonic;
  • matrix;
  • component;
  • amplitude;
  • velocity

Summary

A novel technique for measuring ultrasonic velocity was used to monitor changes that occur during processing and heat treatment of an SiC/RBSN composite. Results indicated that correlations exist between the ultrasonic velocity data and elastic modulus and also interfacial shear strength data and elastic modulus and also interfacial shear strength data determined from mechanical tests. The ultrasonic velocity data can differentiate changes in axial modulus as well as in interfacial shear strength. The advantages and potential of this NDE method for fiber-reinforced ceramic matrix composite applications are discussed.