Abstract
In this paper, the effects of assuming that a brittle material can be modelled by the two-parameter Weibull distribution, if the true representation of the material behaviour is actually a three-parameter distribution, are examined. It is shown that if data from a material characterisation test is used to predict the failure of a component and the stressed surface areas are very different, then this can lead to major discrepancies in the predicted failure stress. It is also shown that if the three-parameter model is a true representation of the material behaviour, then the Weibull modulus for the two-parameter approximation will vary with surface area.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 1171-1179 |
| Number of pages | 9 |
| Journal | Engineering Fracture Mechanics |
| Volume | 68 |
| Issue number | 10 |
| DOIs | |
| State | Published - Jun 15 2001 |
Bibliographical note
Funding Information:One of the authors (BCM) would like to thank HM Nuclear Installations Inspectorate and EPSRC for financial support.
Keywords
- Brittle materials
- Ceramics
- Weibull theory
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