Rácz, Zoltán, Hackney, Eleanor M. and Wood, David (2016) Soft Elastomeric Capacitive Sensor for Structural Health Monitoring. Procedia Engineering, 168. pp. 721-724. ISSN 1877-7058
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Abstract
Propagation of fractures due to high stress loads are a common cause of structural failure. This paper describes a thin soft elastomeric capacitor (SEC) sensor which can be adhered to structures to monitor strain fields and detect sub-millimeter deformations and fractures. Alterations in a mechanical structure change the geometry of the skin-like parallel plate capacitor sensor and the resulting capacitance change is measured as a change in the resonant frequency of a relaxation oscillator circuit. The sensor system comprising of the SEC sensor, the oscillator circuit and a microcontroller demonstrated its capability to detect millimeter scale stretches.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | capacitive sensor; soft elastomers; structural health monitoring; relaxation oscillator |
| Subjects: | B800 Medical Technology H600 Electronic and Electrical Engineering |
| Department: | Faculties > Engineering and Environment > Mathematics, Physics and Electrical Engineering |
| Depositing User: | Paul Burns |
| Date Deposited: | 16 Apr 2018 10:44 |
| Last Modified: | 01 Aug 2021 08:46 |
| URI: | http://nrl.northumbria.ac.uk/id/eprint/33977 |
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