摘要
采用数理统计分析方法,定量比较浸胶丝束拉伸强度实验分布与理论正态分布和Weibull分布的偏离。结果表明,丝束强度分布受纤维种类和基体性能影响。在95％置信度下,浸胶丝束强度分布既可用正态分布描述,也可用Weibull分布描述;但随着基体韧性的提高,浸胶丝束强度分布呈现由正态分布向Weibull分布过渡的趋势。
In this paper the cumulative distribution function (c.d.f) of tensile strength of the impregnated fiber bundles is investigated systematically by mathematical statistics. It is shown that the tensile strength c.d.f. of the impregnated bundles is affected by the kinds of the fibers and the properties of the matrices. Both Guass c.d.f. and Weibull c.d.f. can be accepted to be used as the description for the experimental strength c.d.f. of the impregnated bundles at 95% confidence level. But it is found that the tensile strength c.d.f. of the bundles varies from Gauss c.d.f. to Weibull c.d.f. with the increase of the failure elongation of the matrices.
出处
《航空学报》
EI
CAS
CSCD
北大核心
1992年第10期B567-B570,共4页
Acta Aeronautica et Astronautica Sinica
关键词
复合材料
力学性质
拉伸强度
composites, mechanical properties, tensile strength, strength statistics.
