R Lahtinen et al 2007 Smart Mater. Struct. 16 2571 doi:10.1088/0964-1726/16/6/061
A piezopaint-based sensor for monitoring structure dynamics
R Lahtinen1, T Muukkonen1, J Koskinen1, S-P Hannula1,2 and O Heczko2
Show affiliationsPiezoceramic materials are used today in a variety of applications. By combining a piezoceramic powder with paint resin it is possible to fabricate a new type of piezomaterial, which can easily be applied to almost any surface. This paper describes the development of such a paint. The thermal stability and sensitivity as a function of frequency were investigated. Furthermore, a sensor based on an optimized epoxy piezopaint having a thickness of 80 µm was fixed on a steel beam of a footbridge to study the performance of the sensor and its long-term stability. It was demonstrated that the sensor could detect signals easily both from bridge movement and from pedestrian traffic on the bridge. The signal remained constant for a period of over thirteen months of monitoring.
- PACS
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77.84.Dy Niobates, titanates, tantalates, PZT ceramics, etc.
77.55.+f Dielectric thin films
68.55.-a Thin film structure and morphology
07.07.Df Sensors (chemical, optical, electrical, movement, gas, etc.); remote sensing
68.60.Bs Mechanical and acoustical properties
85.50.-n Dielectric, ferroelectric, and piezoelectric devices
- Subjects
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Condensed matter: electrical, magnetic and optical
- Dates
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Issue 6 (December 2007)
Received 18 May 2007, in final form 27 August 2007
Published 31 October 2007
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A piezopaint-based sensor for monitoring structure dynamics
R Lahtinen et al 2007 Smart Mater. Struct. 16 2571
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