Weibull statistical analysis of granite bending strength |
| |
| Authors: | P M Amaral J Cruz Fernandes L Guerra Rosa |
| |
| Institution: | (1) Department of Materials Engineering, Instituto Superior Técnico, Technical University of Lisbon, Lisboa, Portugal |
| |
| Abstract: | Summary This paper describes and discusses the adequacy of Weibull statistical analysis to analyse the bending strength of granite.
The experimental results show that strength variability is related with a specific origin of failure. This conclusion is based
on analysing the influence of the surface condition (extrinsic defects) on the bending strength results treated by the Weibull
statistics. The conclusions drawn from this study have been validated by analysing the results of the critical flaw dimension
estimated by applying the linear elastic fracture mechanics (LEFM) formulae. Results obtained from fractographic examination
also have been used to describe the location of the origin of the fracture and understand the distribution of defects; i.e.,
there is a unimodal distribution of defects (intrinsic defects), despite the fact that some outlier values are normally observed
in the fractured surfaces.
Correspndence: P. M. Amaral, Department of Materials Engineering, Instituto Superior Técnico, Technical University of Lisbon,
Av. Rovisco Pais, 1049-001 Lisboa, Portugal |
| |
| Keywords: | : Bending strength Weibull statistics failure mode fractographic examination |
| 本文献已被 SpringerLink 等数据库收录！ |
|
