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DIGITAL.CSIC
Article . 2008 . Peer-reviewed
Data sources: DIGITAL.CSIC
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Medida del coeficiente d33 de piezocomposites por interferometría láser

Authors: Montero de Espinosa Freijo, Francisco; Chinchurreta, Francisco José;

Medida del coeficiente d33 de piezocomposites por interferometría láser

Abstract

[ES] La medida del coeficiente piezoeléctrico d33 se realiza utilizando equipos como el Berlincourt Meter , basados en un generador de fuerza calibrado internamente por un elemento piezoeléctrico de referencia que mide la relación de carga, Culombio/ Newton. Estos sistemas están absolutamente contrastados, tomando los grupos de investigación sus medidas como estándar. En el caso de estructuras tales como los composites piezoeléctricos, en los que la estructura está formada por materiales de muy distinta elasticidad, bien por este hecho, bien por la misma estructura, las medidas con el sistema descrito presentan una gran dispersión dependiendo del tamaño de la cabeza presionante y la presión del brazo. Dado que en el modelado de resonadores piezocomposite para su uso en aplicaciones con acoplamiento en aire es necesario conocer dicho parámetro sin incertidumbre, se presentan en el trabajo una serie de medidas sistemáticas de dicho coeficiente para varias geometrías de piezocomposites utilizando interferometría óptica. Se relaciona así mismo estas medidas con el resultado obtenido con el equipo estándar antes referido observando como cuanto más pequeño es el paso de red, más parecidas son los resultados con las dos técnicas.

[EN] The measurement of piezoelectric coefficient d33 is made using devices like the Berlincourt Meter , based on a force generator internally calibrated by a reference piezoelectric element which measures the charge ratio Culomb/Newton. For estructures such as piezoelectric composites, formed by materials of very different elastic properties, the measurements made by the described system present a great dispersión which depends on both the size of the pressing head and the aplied arm pressure. This work presents a set of systematic measurements of d33 for several piezocomposite geometries by means of optical interferometry. These measurements are compared with those obtained with the Berlincourt. It is observed that both techniques render closer results as the net step is reduced.

Este trabajo ha sido realizado gracias a la financiación del proyecto de la CICYT TAP98—0911-C03-01.

Peer reviewed

Country
Spain
Related Organizations
Keywords

Piezoelectric Characterization, Caracterización piezoeléctrica, Piezoelectric characterization, Clay industries. Ceramics. Glass, TP785-869, Optical Interferometry, Interferometría óptica, Optical interferometry, Caracterización Piezoeléctrica, Interferometría Óptica, Composites

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
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