Assessment of Long-Range Reliability of Ceramic Products
Fracture mechanics provides the foundation necessary for making failure predictions to assure the reliability of ceramic materials in structural applications. The parameters necessary for making these predictions can be obtained directly from crack velocity measurements or, indirectly, from stress rupture or stressing rate experiments. These techniques of predicting the lifetime of ceramic components have been tested experimentally for several materials and agreement between theory and experiment is good. The application of this theory to assuring the lifetime of a ceramic product is described.
KeywordsCrack Velocity Stress Rupture Static Fatigue Subcritical Crack Growth Ceramic Product
Unable to display preview. Download preview PDF.
- 2.S.M. Wiederhorn, “Reliability, Life Prediction, and Proof Testing of Ceramics,” pp. 635–65 in Ceramics for High Performance Applications, ed. by J.J, Burke, A, E, Gorum, and R,N, Katz, Brook Hill Pub. Co., Chestnut Hill, MA (1974)Google Scholar
- 3.J.E. Ritter, Jr., “Engineering Design and Fatigue Failure of Brittle Materials,” pp. 667-86 in Fracture Mechanics of Ceramics, Vol. 4, ed. by R.C. Bradt, D.P.H Hasselman, and F.F. Lange, Plenum Press, New York (1978)Google Scholar
- 4.A.G. Evans, “Slow Crack Growth in Brittle Materials Under Dynamic Loading Conditions,” Int. J. Frac., 10, 251–59 (1974)Google Scholar
- 5.A.G. Evans and E.R, Fuller, Fuller, “Crack Propagation in Ceramic Materials Under Cyclic Loading Conditions,” Met. Trans., 5, 27–33 (1974).Google Scholar
- 6.J.E, Ritter, Jr. and J.N, Humenik, “Static and Dynamic Fatigue of Polycrystalline Alumina” to be published J, Mater, Sci., 1978Google Scholar
- 7.G.K. Bansal, W. Duckworth, and D.E. Niesz, “Strength-Size Re-lationships in Ceramic Materials: Investigation of a Commercial Glass-Ceramic,” Bull. Am. Ceram. Soc., J55, 289–92 and 307 (1976).Google Scholar
- 8.S.M. Wiederhorn and J.E. Ritter, Jr., “Application of Fracture Mechanics Concepts to Structural Ceramics,” to be published in Proceedings of ASTM 11th National Symposium on Fracture Mechan¬ics, V.P.I., June 1978.Google Scholar
- 9.J.E. Ritter, Jr., P.B. Oates, E.R. Fuller, Jr., and S.M. Wiederhorn, “Proof Testing of Ceramics: I, Experiment,” to be published. 263Google Scholar
- 10.J.E. Ritter, Jr. and S.A. Wulf, “Evaluation of Proof Testing to Assure Against Delayed Failure,” Am. Ceram. Soc. Bull., 57, 186–89 and 192 (1978).Google Scholar