Static Electromechanical Characteristic of a Three-Layer Circular Piezoelectric Transducer

Grzegorz Mieczkowski , Andrzej Borawski , Dariusz Szpica

Abstract

The paper presents research related to the functional features of a novel three-layer circular piezoelectric actuator/sensor. The outer layers of the transducer are made of non-piezoelectric material. The middle layer comprises two elements—a piezoelectric disk, and a ring made of non-piezoelectric material. The additional external passive layer has a very important function; it protects the transducer’s electrical components against damage caused by external factors. Also, if sparking on the transducer wires or electrodes occurs, this layer prevents fire. So far, there is no analytical model for such a transducer. Closed-form analytical equations are important tools for predicting and optimizing the operation of devices. Thus, using both the Plate Theory and constitutive equations of piezoelectric materials, an analytical formula describing transducer deflection as a function of electrical loads has been found (electromechanical characteristic of the transducer). In addition, it is worth noting that under certain assumptions, the developed analytical model can also be used for two-layer transducers. The tests carried out show satisfactory compliance of the results obtained through the developed solution with both literature data and numerical data. Moreover, based on the obtained analytical model, the effect of selected non-dimensional variables on the actuator performance has been examined. These parameters include dimensions and mechanical properties of both piezoelectric disk and passive plates and strongly influence the behavior of the transducer.
Author Grzegorz Mieczkowski (FME / DMDTE)
Grzegorz Mieczkowski,,
- Department of Machinery Design and Thermal Engineering
, Andrzej Borawski (FME / DMDTE)
Andrzej Borawski,,
- Department of Machinery Design and Thermal Engineering
, Dariusz Szpica (FME / DMDTE)
Dariusz Szpica,,
- Department of Machinery Design and Thermal Engineering
Journal seriesSensors, [SENSORS-BASEL], ISSN 1424-8220, e-ISSN 1424-3210, (N/A 100 pkt)
Issue year2020
Vol20
No1
Pages1-14
Publication size in sheets0.65
Keywords in Englishmechanical engineering; piezoelectric; electromechanical characteristic; circular piezoelectric transducer
ASJC Classification2207 Control and Systems Engineering; 2210 Mechanical Engineering
DOIDOI:10.3390/s20010222
URL https://www.mdpi.com/1424-8220/20/1/222
Internal identifierROC 19-20
Languageen angielski
LicenseJournal (articles only); published final; Uznanie Autorstwa (CC-BY); after publication
Score (nominal)100
Score sourcejournalList
ScoreMinisterial score = 100.0, 11-03-2020, ArticleFromJournal
Publication indicators Scopus SNIP (Source Normalised Impact per Paper): 2016 = 1.393; WoS Impact Factor: 2018 = 3.031 (2) - 2018=3.302 (5)
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