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首页> 外文期刊>Journal of nanoscience and nanotechnology >The bulk piezoresistive characteristics of carbon nanotube composites for strain sensing of structures
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The bulk piezoresistive characteristics of carbon nanotube composites for strain sensing of structures

机译：用于结构应变传感的碳纳米管复合材料的体压阻特性

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摘要

The bulk piezoresistivity of carbon nanotube (CNT) in polymer matrix was discussed to develop a strain sensor for engineering applications. The polymer improves interfacial bonding between the nanotubes and the CNT composite and that enhances the strain transfer, repeatability, and linearity of the sensor. The largest contribution of piezoresistivity of the sensor may come from slippage of overlaying or bundled nanotubes in the matrix, from a macroscopic point of view. Nano W interfaces of CNTs in a matrix polymer also contribute to the linear strain response compared to other micro size carbon filler. The strain sensor had a low bandwidth and adequate strain sensitivity. The nanocomposite strain sensor is particularly useful for detecting large strains which can monitor strain and stress on a structure with simple electric circuit for strain monitoring of structures.
机译：讨论了碳纳米管（CNT）在聚合物基质中的本体压阻率，以开发用于工程应用的应变传感器。该聚合物改善了纳米管和CNT复合材料之间的界面结合，并增强了传感器的应变传递，可重复性和线性。从宏观的角度来看，传感器的压阻率的最大贡献可能来自于基体中重叠或成束的纳米管的滑动。与其他微米尺寸的碳填料相比，基体聚合物中CNT的纳米W界面也有助于线性应变响应。应变传感器具有低带宽和足够的应变灵敏度。纳米复合应变传感器特别适用于检测大应变，该大应变可通过简单的电路监测结构的应变，从而监测结构上的应变和应力。

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