Options
The influence of microstructure on the fracture statistics of polycrystalline diamond and polycrystalline cubic boron nitride
Date Issued
2014-09
Date Available
2014-09-29T15:30:36Z
Abstract
Flexural strength data of a number of grades of polycrystalline diamond (PCD), and polycrystalline cubic boron nitride (PCBN) were analyzed using Weibull, normal and lognormal distributions. The role of microstructure in the failure mechanism of such materials was analyzed in terms of the chosen strength distributions. The best-fit distributions were determined using the maximum log-likelihood criteria and a comparison between the best and worst fit was conducted using the Akaike Information Criteria (AIC). Both large and small specimens were tested to investigate possible volume scaling effects for these materials. The different microstructures between the two materials was shown to have an effect on the statistical strength distributions. It was found that for PCD, in general, a lognormal distribution provided a better fit than the other distributions and no specimen size effect was observed. For PCBN a significant specimen size effect was observed and this also corresponded to the data fitting to a Weibulldistribution.
Type of Material
Journal Article
Publisher
Elsevier
Journal
Ceramics International
Volume
40
Issue
8
Start Page
11543
End Page
11549
Copyright (Published Version)
2014 Elsevier
Language
English
Status of Item
Peer reviewed
This item is made available under a Creative Commons License
File(s)
Owning collection
Scopus© citations
15
Acquisition Date
Apr 17, 2024
Apr 17, 2024
Views
1426
Acquisition Date
Apr 17, 2024
Apr 17, 2024
Downloads
555
Last Week
1
1
Last Month
6
6
Acquisition Date
Apr 17, 2024
Apr 17, 2024