摘要
讨论了依附于树脂基体中碳纤维间在微米尺度下的接触导电现象,分析了不同受载阶段下碳纤维搭接处的电阻响应规律。碳纤维接触处受到外加载荷局部有应变产生时,其接触处电阻的力阻响应规律可分为不同的两个阶段:第1阶段搭接处电阻表现出随着压应变的增大而同步线性地减小;第2阶段中纤维间的接触电阻发展为由隧道效应产生的非接触电阻,随着拉伸载荷的增大,搭接处电阻同步增大。
The contact resistance between the carbon fiber monofilament before and after loading under micro- meter scale was discussed. With taking the experiments of mechanical resistance and tunnel effect, contact re- sistance with two adjacent fibers had different corresponding style to the loading within different loading proce- dure. In the first procedure the contact resistance decreased linearly with larger tension strain. In the second procedure the contact resistance which was caused by tunnel effect becomes higher with larger tension.
出处
《功能材料》
EI
CAS
CSCD
北大核心
2012年第20期2815-2817,共3页
Journal of Functional Materials
基金
国家自然科学基金资助项目(11102142)
中央高校基本科研业务费专项资金资助项目(2012-Ⅳ-057)
关键词
接触电阻
碳纤维单丝
力阻传感特性
隧道效应
contact resistance
carbon fiber monofilament
loading sensitivity
tunnel effect
