用Weibull模数表征碳纤维的力学性能  

MECHANIC PROPERTY OF CARBON FIBERS AND WEIBULL MODEL

作　　者：贺福[1] 梁涛[1] 王润娥[1] 

机构地区：[1]中国科学院山西煤炭化学研究所

出　　处：《航空材料学报》1993年第1期40-46,共7页Journal of Aeronautical Materials

摘　　要：碳纤维属于脆性材料,随机分布的缺陷控制其抗拉强度。用Weibull最弱连接理论及经验方程式可阐明和计算抗拉强度与CV值以及与直径的关系。本文提出用拉格朗日乘子多元回归计算的双参数双模态韦氏模型方法,并用直接拟合法计算三参数双模态韦氏模型,得到了很好的结果。Because carbon fibers belong to brittle materials, their mechanic properties such as tensile sttength depend on stochastic defects. The Weibull weakest linking model and empirical formula can express and calculate the relationship between tensile strength and cv value as well as the relationship between teasile strength and fiber dianeters. Meanwhile, we have put forward the method calculating the biparameter Weibull model with mutinomial regression. We also used direct—fitting method calculating the triparameter weibull model and obtained satisfied results.

关 键 词：碳纤维 韦氏方程 韦氏模数 

分 类 号：V258.3[一般工业技术—材料科学与工程]