We investigated how temperature and relative humidity affects the electrical resistance of reinforcing carbon fibers in polymer composites. We used hybrid composites in which a tight, carbon fiber roving was laminated inside glass fiber-reinforced epoxy specimens. The electrical resistance of the carbon fibers was monitored continuously while the temperature or relative humidity was varied. The specific resistance was calculated in order to compare the different effects acting on the resistance of the carbon fiber. We found a relationship between temperature or relative humidity and specific resistance. As a result, carbon fibers can be used in different applications (for example in cure process monitoring). On the other hand, the effects should be compensated for when the resistance of the carbon fiber is measured in a health monitoring application (e.g. as an elongation sensor).

我们研究了温度和相对湿度如何影响聚合物复合材料中增强碳纤维的电阻。我们使用了混合复合材料，其中紧密的碳纤维粗纱层压在玻璃纤维增​​强的环氧样品中。在改变温度或相对湿度的同时连续监测碳纤维的电阻。计算电阻率是为了比较作用在碳纤维电阻上的不同影响。我们发现温度或相对湿度与电阻率之间存在关系。结果，碳纤维可以用于不同的应用中（例如，在固化过程监控中）。另一方面，