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文章研究了掺入碳纤维和纳米碳黑的水泥基压敏材料在两种不同荷载幅度的单个加卸载循环下电阻变化率(ΔR/R0)与应力之间的相关性及其影响因素。实验结果表明压敏材料在一定应力范围内电阻变化率(ΔR/R0)与应力之间呈现较好的线性关系,而在加卸载循环的小应力阶段电阻变化率(ΔR/R0)与应力之间的关系是非线性的,对此本文从机理上分析了其相关性及其影响因素并建立了材料内部电路模型。
The relationship between the rate of change of resistance (ΔR / R0) and the stress and its influencing factors under different loading and unloading cycles of two different loading ranges were studied in cement-based pressure-sensitive materials with carbon fiber and nano-carbon black. The experimental results show that there is a good linear relationship between the rate of change of resistance (ΔR / R0) and the stress within a certain range of stress. However, the rate of change of resistance (ΔR / R0) and stress The relationship between the non-linear, this paper from the mechanism of its relevance and its influencing factors and the establishment of the material circuit model.