Chapter 55. Error in Flexure Testing of Advanced Ceramics Under Cyclic Loading

  1. J. P. Singh
  1. Sung R. Choi

Published Online: 26 MAR 2008

DOI: 10.1002/9780470294437.ch55

Proceedings of the 21st Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: A: Ceramic Engineering and Science Proceedings, Volume 18, Issue 3

Proceedings of the 21st Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: A: Ceramic Engineering and Science Proceedings, Volume 18, Issue 3

How to Cite

Choi, S. R. (1997) Error in Flexure Testing of Advanced Ceramics Under Cyclic Loading, in Proceedings of the 21st Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: A: Ceramic Engineering and Science Proceedings, Volume 18, Issue 3 (ed J. P. Singh), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470294437.ch55

Author Information

  1. Cleveland State University, Cleveland, Ohio 44115; Jonathan A. Salem, NASA Lewis Research Center, Cleveland, Ohio 44135

Publication History

  1. Published Online: 26 MAR 2008
  2. Published Print: 1 JAN 1997

ISBN Information

Print ISBN: 9780470375495

Online ISBN: 9780470294437

SEARCH

Keywords:

  • fixed-roller flexure;
  • cyclic loading;
  • advanced ceramics;
  • load-strain curves;
  • creep behavior

Summary

The stress error associated with a four-point, fixed-roller flexure fixture was analyzed under three different cyclic loading forms: triangular, sinusoidal and square wave forms. The fixed-roller fixture could not reproduce the exact cyclic wave form in response to the input form, resulting in an undesirable hysteresis in the load-strain curves. The hysteresis represents the loading and unloading stress errors, which gives rise to deviations in wave shape as well as load (R-) ratio.