Chapter 40. Cyclic Fatigue Life and Crack Growth Behavior of Alumina
- John B. Wachtman Jr.
Published Online: 26 MAR 2008
Copyright © 1992 The American Ceramics Society
Proceedings of the 16th Annual Conference on Composites and Advanced Ceramic Materials, Part 2 of 2: Ceramic Engineering and Science Proceedings, Volume 13, Issue 9/10
How to Cite
Raghuraman, S., Hour, K. Y. and Stubbins, J. F. (1994) Cyclic Fatigue Life and Crack Growth Behavior of Alumina, in Proceedings of the 16th Annual Conference on Composites and Advanced Ceramic Materials, Part 2 of 2: Ceramic Engineering and Science Proceedings, Volume 13, Issue 9/10 (ed J. B. Wachtman), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470313978.ch40
- Published Online: 26 MAR 2008
- Published Print: 1 JAN 1994
Print ISBN: 9780470375198
Online ISBN: 9780470313978
- stoichiometric standards;
Cyclic fatigue stress/life and crack growth properties under uniaxial tension were investigated in coarse grained alumina ceramic. True mechanical fatigue effects were observed in tests conducted below static fatigue limits. The S/N tests reveal a power law relationship between fatigue strength and life (SnN = SUTSn). Fatigue susceptibility in cyclic tension was lower than in rotary bending or cyclic tension-compression, and was grain size dependent. Crack growth tests show that subcritical crack extension occurred and that crack propagation rate was a function of stress intensity range. SEM and TEM examination suggests that microcracking is the dominant fatigue damage mechanism.