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Sensors 2010, 10(6), 5626-5641; doi:10.3390/s100605626
Article

On the Use of Piezoelectric Sensors in Structural Mechanics: Some Novel Strategies

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Received: 30 March 2010; in revised form: 26 April 2010 / Accepted: 27 April 2010 / Published: 3 June 2010
(This article belongs to the Special Issue State-of-the-Art Sensors Technology in Austria)
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Abstract: In the present paper, a review on piezoelectric sensing of mechanical deformations and vibrations of so-called smart or intelligent structures is given. After a short introduction into piezoelectric sensing and actuation of such controlled structures, we pay special emphasis on the description of some own work, which has been performed at the Institute of Technical Mechanics of the Johannes Kepler University of Linz (JKU) in the last years. Among other aspects, this work has been motivated by the fact that collocated control of smart structures requires a sensor output that is work-conjugated to the input by the actuator. This fact in turn brings into the play the more general question of how to measure mechanically meaningful structural quantities, such as displacements, slopes, or other quantities, which form the work-conjugated quantities of the actuation, by means piezoelectric sensors. At least in the range of small strains, there is confidence that distributed piezoelectric sensors or sensor patches in smart structures do measure weighted integrals over their domain. Therefore, there is a need of distributing or shaping the sensor activity in order to be able to re-interpret the sensor signals in the desired mechanical sense. We sketch a general strategy that is based on a special application of work principles, more generally on displacement virials. We also review our work in the past on bringing this concept to application in smart structures, such as beams, rods and plates.
Keywords: sensor research; piezoceramics; structural control; collocation sensor research; piezoceramics; structural control; collocation
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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MDPI and ACS Style

Irschik, H.; Krommer, M.; Vetyukov, Y. On the Use of Piezoelectric Sensors in Structural Mechanics: Some Novel Strategies. Sensors 2010, 10, 5626-5641.

AMA Style

Irschik H, Krommer M, Vetyukov Y. On the Use of Piezoelectric Sensors in Structural Mechanics: Some Novel Strategies. Sensors. 2010; 10(6):5626-5641.

Chicago/Turabian Style

Irschik, Hans; Krommer, Michael; Vetyukov, Yury. 2010. "On the Use of Piezoelectric Sensors in Structural Mechanics: Some Novel Strategies." Sensors 10, no. 6: 5626-5641.


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