235 炭素粒子分散形複合材料の損傷挙動と電気抵抗変化(OS 先進材料の力学的特性と計測技術)

概要

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Mechanical behavior and electrical resistance change of a conductive composite consisting of epoxy resin and conductive carbon particle under tensile loading were investigated. Its electrical resistance increased with increasing strain during loading and the sensitivity of resistance change was much higher compared to the case of specimen contaning carbon fiber. In addition, when the specimens were cyclically loaded, residual electrical resistance was observed after removing load. The value of residual electrical resistance was dependent on the maximum strain applied in the past. This fact suggests that this composite have the ability to memorize strain applied in the past as a residual electrical resistance. The mechanism of electrical resistance change during and after loading was discussed on the basis of the results of microfracture observationon and micromechanical analysis of electroconductive composite with percolation structure.
一般社団法人日本機械学会の論文
2000-11-24