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.
参考文献
| [1] | 吴科如,陈兵,姚武.碳纤维机敏水泥基材料性能研究[J].同济大学学报(自然科学版),2002(04):456-463. |
| [2] | 张小玉,李卓球,宋显辉.碳纤维智能层的传感功能特性研究[J].华中科技大学学报（城市科学版）,2008(02):36-38. |
| [3] | Shiladitya Basu;Anthony M. Waas;Damodar R. Ambur .Compressive failure of fiber composites under multi-axial loading[J].Journal of the Mechanics and Physics of Solids,2006(3):611-634. |
| [4] | J. W. Kim;D. G. Lee .Measurement of fiber orientation angle in FRP by intensity method[J].Journal of Materials Processing Technology,2008(1-3):755-760. |
| [5] | 方玺,朱四荣,李卓球.碳纤维单丝偏轴拉伸力阻效应实验与理论分析[J].功能材料,2011(08):1383-1385,1389. |
| [6] | 朱四荣,李卓球,宋显辉.碳纤维水泥砂浆梁变形调节的实验分析[J].建筑材料学报,2003(03):308-311. |
| [7] | 邓友生,李卓球,吕泳,刘冬.树脂基碳纤维智能层检测混凝土梁裂缝[J].华中科技大学学报（自然科学版）,2010(02):94-96. |
| [8] | 张小玉,朱四荣,李卓球.碳纤维智能层电阻率层析成像实验[J].华中科技大学学报（自然科学版）,2010(05):121-123. |
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