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Development of a Multifunctional Stretchable Sensor Network for Smart Structures

机译：用于智能结构的多功能可伸缩传感器网络的开发

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Smart structures revolutionize the traditional manned systems and challenge the structural health monitoring (SHM) field from a completelynewperspective. Advanced sensing technology enables highly intelligent systems by embedding sensor networks into composite materials for smart structures such as fly-by-feel flights and intelligent robots In this paper, we present a highly stretchable network with multifunctional sensor nodes micro fabricated on a flexible polymer substrate. For the first time, we are capable of mtegrating three types of sensors with their appropriate materials into one single network. 6 platinum resistance temperature detectors (RTDs), 27 constantan strain gauges (SGs) and 8 lead zirconate titanate piezoelectric transducers (PZTs) with their unique patterns are distributed over the entire network Finite element modeling has been performed to analyze the stress distribution along the node-wire connections during the stretching process in order to minimize nodal rotations. By taking advantage of a serpentine wire design, the network can be expanded 700% in area while maintaining high yieldand low variation A series of sensor characterizations have been conducted to validate the functionality of RTDs, SGs and PZTs. It is worth mentioning that the sensitivity of the RTD is 0.1 V/°C and the mmimum detectable strain of the SG is as low as 2.26 us The multifunctional sensor network will be embedded into a composite wing to provide real-time aeroelastic feedbacks in a wind tunnel.
机译：智能结构彻底改变了传统的载人系统，并从全新的角度挑战了结构健康监测（SHM）领域。先进的传感技术通过将传感器网络嵌入复合材料中来实现高度智能的系统，这些复合材料用于智能结构（如按感觉飞行和智能机器人）。在本文中，我们提出了一种高度可扩展的网络，该网络具有在柔性聚合物基板上微加工的多功能传感器节点。我们首次能够将三种类型的传感器及其适当的材料集成到一个网络中。在整个网络中分布了6个铂电阻温度检测器（RTD），27个常数应变计（SGs）和8个具有独特模式的锆酸钛酸铅锆压电换能器（PZT），已进行了有限元建模以分析节点上的应力分布拉伸过程中的导线连接，以最大程度地减少节点旋转。通过利用蛇形线设计，可以将网络扩展700％的面积，同时保持高产量和低变异性。已经进行了一系列传感器表征，以验证RTD，SG和PZT的功能。值得一提的是，RTD的灵敏度为0.1 V /°C，SG的最大可检测应变低至2.26 us。多功能传感器网络将被嵌入到复合机翼中，以在飞机上提供实时气动弹性反馈。风洞。

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