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从影响材料电阻率的主要因素——碳纤维体积分数入手,主要分析了材料的电阻率这一电气特性,根据材料表面测量的数据,估算出材料内部碳纤维的体积分数。再根据多个试件测量的数据,拟合出材料的碳纤维体积分数和电阻率的关系曲线。根据估算出的碳纤维体积分数,估算出材料的电阻率。利用三维编织碳纤维复合材料的编织角和花节长度,估算出材料的电阻率。根据材料的电阻率这一电气特性,便于以后对材料进行涡流无损检测分析。
Starting from the volume fraction of carbon fiber, which mainly affects the material resistivity, the electrical characteristics of the material resistivity are mainly analyzed. The volume fraction of the carbon fibers in the material is estimated based on the data measured on the surface of the material. According to the data measured by several test pieces, the relationship curve between the volume fraction of carbon fiber and the resistivity of the material is fitted. Based on the estimated carbon fiber volume fraction, the resistivity of the material is estimated. Using the braided angle and knot length of the three-dimensional braided carbon fiber composite, the resistivity of the material was estimated. According to the electrical resistivity of the material of this electrical properties, to facilitate the subsequent eddy current non-destructive testing of the material analysis.