Characterization of Distributed Microfabricated Strain Gauges on Stretchable Sensor Networks for Structural Applications
| Autor: | Tanay Topac, Wyatt Smith, Xiyuan Chen, Purim Ladpli, Fu-Kuo Chang, Cheng Liu |
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| Rok vydání: | 2018 |
| Předmět: |
Computer science
Acoustics 02 engineering and technology lcsh:Chemical technology 01 natural sciences Biochemistry Article Analytical Chemistry lcsh:TP1-1185 Electrical and Electronic Engineering Instrumentation Strain gauge sensor network structural health monitoring 010401 analytical chemistry Detector distributed strain measurement 021001 nanoscience & nanotechnology Piezoelectricity Atomic and Molecular Physics and Optics smart structure 0104 chemical sciences Transducer Gauge factor strain gauge Structural health monitoring 0210 nano-technology Wireless sensor network |
| Zdroj: | Sensors (Basel, Switzerland) Sensors Volume 18 Issue 10 Sensors, Vol 18, Iss 10, p 3260 (2018) |
| ISSN: | 1424-8220 |
| Popis: | Smart structures mimic biological systems by using thousands of sensors serving as a nervous system analog. One approach to give structures this sensing ability is to develop a multifunctional sensor network. Previous work has demonstrated stretchable sensor networks consisting of temperature sensors and impact detectors for monitoring external environments and interacting with other objects. The objective of this work is to develop distributed, robust and reliable strain gauges for obtaining the strain distribution of a designated region on the target structure. Here, we report a stretchable network that has 27 rosette strain gauges, 6 resistive temperature devices and 8 piezoelectric transducers symmetrically distributed over an area of 150 × 150 mm to map and quantify multiple physical stimuli with a spatial resolution of 2.5 × 2.5 mm. We performed computational modeling of the network stretching process to improve measurement accuracy and conducted experimental characterizations of the microfabricated strain gauges to verify their gauge factor and temperature coefficient. Collectively, the results represent a robust and reliable sensing system that is able to generate a distributed strain profile of a common structure. The reported strain gauge network may find a wide range of applications in morphing wings, smart buildings, autonomous cars and intelligent robots. |
| Databáze: | OpenAIRE |
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