Title :
Monitoring the thickness of polymer coating by using piezoelectric sensor
Author :
Perrissin-Fabert, I. ; Jayet, Y. ; Guerjouma, R. El
Author_Institution :
Lab. de Traitement du Signal et Ultrasons, Villeurbanne, France
Abstract :
The electric impedance of a thin-piezoelectric disc which is linked to its thickness deformation is simulated by using a one-dimensional model. It is shown that the electric impedance of such an element depends on the viscoelastic properties and on the thickness of the medium surrounding the ceramic. The validity of the model is shown by comparing the theoretical and experimental electric impedances of a piezoelectric element placed in different viscoelastic media. An original tool for monitoring the thickness and the viscoelastic properties of polymeric coatings is presented
Keywords :
electric impedance measurement; nondestructive testing; piezoelectric transducers; polymer films; thickness measurement; viscoelasticity; NDE; electric impedance; one-dimensional model; piezoelectric sensor; polymer coating; thickness monitoring; thin-piezoelectric disc; viscoelastic properties; Ceramics; Coatings; Deformable models; Elasticity; Electric variables measurement; Impedance measurement; Monitoring; Polymer films; Vibrations; Viscosity;
Conference_Titel :
Ultrasonics Symposium, 1992. Proceedings., IEEE 1992
Conference_Location :
Tucson, AZ
Print_ISBN :
0-7803-0562-0
DOI :
10.1109/ULTSYM.1992.275864
