Numerical and experimental determination of impedance characteristics of PZT elements for acoustic emission sensors

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26220%2F15%3APU115115" target="_blank" >RIV/00216305:26220/15:PU115115 - isvavai.cz</a>

Result on the web

—

DOI - Digital Object Identifier

—

Result language

angličtina

Original language name

Numerical and experimental determination of impedance characteristics of PZT elements for acoustic emission sensors

Original language description

The paper presents results of numerical and experimental determination of frequency dependence of electrical impedance of piezoelectric elements for use in acoustic emission sensors for nondestructive predictive diagnostics. The shape of the electrical impedance characteristic of the piezo element, especially position of electrical resonances, relates to the mechanical resonances of the sensor. Analyzed piezoelectric elements for sensors have been made from soft PZT ceramics with different shape of the elements and distribution of elec-trodes. Element shapes were thin discs, cylindrical and conical. Analysis has been firstly car-ried out numerically with finite element modeling and later on compared with experimental results obtained by measurement with precision impedance analyzer. The presented study analyzes the compliance between numerical simulations and practical measurements. With numerical simulations all applicable boundary conditions and material characteristics have been tested to successfully predict electrical impedance of real elements. Also influences of electrodes size and their placement related to the electrical impedance of the element have been investigated, especially influence of the size of the smaller electrode in off-axis non symmetrical elements (conical shape). Result of the comparison indicates the possibility to predict real electrical impedance of the sensor elements based on numerical simulations.

Czech name

—

Czech description

—

Type

D - Article in proceedings

CEP classification

—

OECD FORD branch

20201 - Electrical and electronic engineering

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Publication year

2015

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

Proceedings of the 22nd International Congress on Sound and Vibration

ISBN

978-88-88942-48-3

ISSN

2329-3675

e-ISSN

—

Number of pages

8

Pages from-to

1-8

Publisher name

International Institute of Acoustic and Vibration

Place of publication

Florencie, Itálie

Event location

Florencie

Event date

Jul 12, 2015

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

000398997006084