کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10625380 989626 2014 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The influence of microstructure on the fracture statistics of polycrystalline diamond and polycrystalline cubic boron nitride
ترجمه فارسی عنوان
تأثیر ریزساختار بر روی آمار شکست در الماس های پلی کریستالی و نیترید بور بسپار پلی کریستالی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
چکیده انگلیسی
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 Weibull distribution.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 40, Issue 8, Part A, September 2014, Pages 11543-11549
نویسندگان
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