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- Title
Slow crack growth of brittle materials with exponential crack-velocity formulation-static fatigue.
- Authors
Choi, S. R.; Nemeth, N. N.; Gyekenyesi, J. P.
- Abstract
The life prediction analysis based on an exponential crack-velocity formulation was made and examined using a variety of experimental data on advanced structural ceramics in constant stress (‘static fatigue’ or ‘stress rupture’) testing at ambient and elevated temperatures. The data fit to the relation between ln (time to failure) versusapplied stresswas be very reasonable for most of the materials studied, resulting in a similar degree of accuracy as compared with the power-law crack-velocity formulation. The major limitation in the exponential crack-velocity formulation, however, was that the inert strength of a material must be knownpriorito evaluate the important slow-crack-growth (SCG) parametern, a drawback as compared with the conventional power-law crack-velocity formulation.
- Subjects
CONSTRUCTION materials; POTTERY; CERAMICS; TEMPERATURE; STATICS; PHYSICS
- Publication
Journal of Materials Science, 2005, Vol 40, Issue 7, p1647
- ISSN
0022-2461
- Publication type
Article
- DOI
10.1007/s10853-005-0665-0