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Temperature-Compensated Force/Pressure Sensor Based on Multi-Walled Carbon Nanotube Epoxy Composites

机译:基于多壁碳纳米管环氧树脂复合材料的温度补偿力/压力传感器

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In this study, we propose a multi-walled carbon nanotube epoxy composite sensor for force and pressure sensing in the range of 50 N–2 kN. A manufacturing procedure, including material preparation and deposition techniques, is proposed. The electrode dimensions and the layer thickness were optimized by the finite element method. Temperature compensation is realized by four nanocomposites elements, where only two elements are exposed to the measurand. In order to investigate the influence of the filler contents, samples with different compositions were prepared and investigated. Additionally, the specimens are characterized by cyclical and stepped force/pressure loads or at defined temperatures. The results show that the choice of the filler content should meet a compromise between sensitivity, temperature influence and noise behavior. At constant temperature, a force of at least 50 N can be resolved. The measurement error due to the temperature influence is 150 N in a temperature range of −20°C−50°C.
机译:在这项研究中,我们提出了一种多壁碳纳米管环氧复合材料传感器,用于在50 N–2 kN的范围内进行力和压力传感。提出了包括材料制备和沉积技术的制造程序。电极尺寸和层厚通过有限元方法进行了优化。通过四个纳米复合材料元素实现温度补偿,其中只有两个元素暴露于被测物。为了研究填料含量的影响,制备并研究了具有不同组成的样品。另外,样品的特征在于周期性和阶梯式的力/压力载荷或在规定的温度下。结果表明,填料含量的选择应满足灵敏度,温度影响和噪声行为之间的折衷。在恒定温度下,至少可以分辨50 N的力。由于温度的影响,在-20°C-50°C的温度范围内,测量误差为150N。

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