Soft Elastomeric Capacitive Sensor for Structural Health Monitoring

Zoltán Rácz, Eleanor M. Hackney, David Wood

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)
2 Downloads (Pure)


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.
Original languageEnglish
Pages (from-to)721-724
Number of pages4
JournalProcedia Engineering
Publication statusPublished - 1 Jan 2016
EventEurosensors 2016 - 30th Anniversary Conference - Hungarian Academy of Sciences, Budapest, Hungary
Duration: 4 Sept 20166 Sept 2016


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