Chapter 9. Fiber Creep Evaluation by Stress Relaxation Measurements

  1. John B. Wachtman Jr
  1. Gregory N. Morscher2,
  2. James A. Dicarlo1 and
  3. Timothy Wagner3

Published Online: 28 MAR 2008

DOI: 10.1002/9780470313831.ch9

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

Morscher, G. N., Dicarlo, J. A. and Wagner, T. (1991) Fiber Creep Evaluation by Stress Relaxation Measurements, 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.ch9

Author Information

  1. 1

    NASA Lewis Research Center Cleveland, OH 44135

  2. 2

    Case Western Reserve University, Cleveland, OH

  3. 3

    Bay High School Faculty, bay Village, OH

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:

  • poeycrystalline;
  • mechanisms;
  • polycrystalline;
  • equation;
  • reciprocal

Summary

A simple bend stress relaxation (BSR) test has been used to measure the creep related properties of a chemically vapor-deposited SiC fiber. Time, temperature, and strain dependent BSR data were analyzed to ascertain the ability of the stress relaxation results to predict tensile creep as a function of the same parameters. The predictions compared very well to actual creep data obtained by axial measurements, indicating that the BSR test could be used for determining both creep and stress relaxation of polycrystalline ceramic fibers under tensile loading.