The goal of this study is to characterise the piezoresistive capabilities of self‐sensory carbon roving reinforcements by means of integrative gauge factors (GFs). The correlation between the measured integrative electrical resistance of the carbon rovings and the distributed strain is experimentally investigated by two different textile reinforced concrete beams under monotonic flexural loading. Because the microstructural mechanism of the rovings within the concrete matrix affects the electrical resistance, the GF is a function of the structural health. Two approaches to explore the GF are suggested: the first is by considering the design and damaged states separately and accordingly defining a constant GF for each state, and the second is by considering the entire structural response which leads to a continuous non‐linear correlation. The potential of the two representations of GFs is presented by investigating the two beams. It is demonstrated that similar ranges of GFs are obtained for both beams, which further demonstrates the potential of using the proposed methodology for quantitative monitoring purposes.

中文翻译：

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集成规范因数对智能碳纤维纺织混凝土梁的电结构表征

这项研究的目的是通过综合规格因子（GFs）表征自感碳粗纱增强材料的压阻性能。碳纤维粗纱的整体电阻与分布应变之间的相关性是通过在单调弯曲载荷下用两种不同的纺织增强混凝土梁实验研究的。由于混凝土基体中粗纱的微观结构机制会影响电阻，因此GF是结构健康的函数。提出了两种探索GF的方法：第一种是分别考虑设计状态和损坏状态，并为每个状态定义一个恒定的GF，第二种是考虑导致连续非线性相关的整个结构响应。GFs两种表示形式的潜力是通过研究两个光束来呈现的。事实证明，对于两个光束都获得了相似范围的GF，这进一步证明了使用所提出的方法进行定量监测的潜力。