Topic
Piezoelectric sensor
About: Piezoelectric sensor is a research topic. Over the lifetime, 7127 publications have been published within this topic receiving 115903 citations.
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TL;DR: In this paper, the active control of laminated composite plates with piezoelectric sensor/actuator patches using an efficient mesh-free method, i.e., the element-free Galerkin (EFG) method, is investigated.
50 citations
TL;DR: To account for the temperature effect on guided wave signals in complex structures, a significant amount of baseline measurements typically need to be collected over a large temperature range to se... as mentioned in this paper,...
Abstract: To account for the temperature effect on guided wave signals in complex structures, a significant amount of baseline measurements typically need to be collected over a large temperature range to se...
49 citations
TL;DR: Anisotropic piezocomposite transducers (APTs) have great potential to be used as structurally integrated transducers for guided-wave (GW) structural health monitoring.
Abstract: Anisotropic piezocomposite transducers (APTs), such as macro fiber composites and active fiber composites, have great potential to be used as structurally integrated transducers for guided-wave (GW) structural health monitoring. Their main advantages over conventional monolithic piezoceramic wafer transducers are mechanical flexibility, curved surface conformability, power efficiency, their ability to excite focused GW fields, and their unidirectional sensing capability as a GW sensor. In this paper, models are developed to describe excitation of GW fields by APTs in isotropic structures. The configurations explored are plane Lamb-wave fields in beams with rectangular cross-section, axisymmetric GW fields in cylinders, and 3-D GW fields in plates. The dynamics of the substrate and transducer are assumed uncoupled. The actuator is modeled as causing shear traction at the edges of the actuator's active area along the fiber direction. The sensor is modeled as sensing the average extensional strain over the active area along the fiber direction. The work is unique in that the formulation is based on 3-D elasticity, and no reduced-order structural assumptions are used. This is crucial to model multimodal GW propagation, especially at high frequencies. A formulation is also proposed to model the behavior of APTs as GW sensors. Finally, results from experimental tests to examine the validity of the models are discussed and the possible sources of error are examined in detail.
49 citations
TL;DR: In this article, the dynamics of a vibrating piezoelectric disc, which creates, under specific vibrating conditions, an air squeeze film that is able to levitate a freely suspended object, is investigated.
49 citations
TL;DR: In this paper, the authors present a numerical and experimental investigation on active flutter suppression of a swept-back cantilevered lifting surface using piezoelectric (PZT) actuation.
49 citations