陶瓷切口强度的概率分布(Ⅰ)基本表达式

无机材料学报, 1998, 13(4): 449-456.

陶瓷切口强度的概率分布(Ⅰ)基本表达式

鄢君辉 , 郑修麟 , 赵康 , 王锋会

西安710072

Department of Materials Science &

Engineering Northwestern Polytechnical University Xi an 710072 China

关键词：陶瓷 , null , null , null , null

Probability Distribution of Notch Strength of Ceramics (Ⅰ) Basic Expressions

YAN Jun-Hui , ZHENG Xiu-Lin , ZHAO Kang , WANG Feng-Hui

Keywords： ceramic, flexural strength, notch strength, statistical characteristic parameter, probability distribution , 弯曲强度 , 切口强度 , 统计特征参量 , 概率分布

本文对Al₂O₃陶瓷的强度实验结果进行了进一步分析，分析结果表明：陶瓷的弯曲切口强度和弯曲断裂强度的实验结果同时服从正态分布、对数正态分布和两参数Weibull分布．进而根据脆性材料切口强度表达式和概率论一般原理，求得了切口强度和弯曲强度统计特征参量间的相互关系表达式，并进行了验证．

Further analysis on the notch strength of alumina ceramics was carried out. Analysis result shows that test results of notch strength and fracture strength
under bending loading condition, i.e. flexural strength follow the normal distribution, the log-normal distribution and two-parameter Weibull distribution as well. Then,
on the basis of the expression for notch strength of brittle material and the fundamental principle of probability theory, correlations between the statistical
characteristic parameters of notch strength and those of flexural strength of ceramics were obtained and checked by the test results.

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