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研究了碳纤维毡和树脂基碳纤维复合材料的应变传感特性,结果表明:虽然碳纤维毡应变传感灵敏度系数比树脂基碳纤维复合材料高1倍多,但是树脂基碳纤维复合材料比碳纤维毡应变传感稳定性高出好几倍,甚至几十倍。5层碳纤维毡树脂基复合材料的应变传感稳定性系数为12.1,远高于碳纤维毡的0.35,因为它除了有单层碳纤维毡本身的纤维搭接构成的导电网络,层间也有短切碳纤维的搭接,形成了一个新的导电性能更加完好的立体导电网络。
The strain sensing characteristics of carbon fiber mats and resin-based carbon fiber composites were studied. The results show that although the strain sensing sensitivity of carbon fiber mats is more than double that of resin-based carbon fiber composites, the resin-based carbon fiber composites are more sensitive than carbon fiber mats Stability several times higher, or even several times. The 5-layer carbon fiber felt-based composite has a strain sensing stability coefficient of 12.1, which is much higher than that of carbon fiber felt, since it has not only the conductive network formed by the fiber lap of the single-layer carbon fiber mat itself, but also the chopped carbon fibers Of the overlap, forming a new three-dimensional conductive network more complete conductivity.