A piezopaint-based sensor for monitoring structure dynamics

R. Lahtinen*, T. Muukkonen, J. Koskinen, S. P. Hannula, O. Heczko

*Corresponding author for this work

    Research output: Contribution to journalArticleScientificpeer-review

    19 Citations (Scopus)


    Piezoceramic 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 80νm 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.

    Original languageEnglish
    Pages (from-to)2571-2576
    Number of pages6
    JournalSmart Materials and Structures
    Issue number6
    Publication statusPublished - 2007
    MoE publication typeA1 Journal article-refereed


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