Nondestructive evaluation of materials using an inserted piezoelectric sensor-correlation with hardness measurements

Author

Perrissin-Fabert, Isabelle ; Jayet, Yves ; El Guerjouma, Rachid

Author_Institution

Lab. Traitment du Signal et Ultrason, Inst. Nat. des Sci. Appliquees, Villeurbanne, France

Volume

42

Issue

4

fYear

1995

fDate

7/1/1995 12:00:00 AM

Firstpage

641

Lastpage

648

Abstract

Using a one-dimensional model, we show that the analytical expression of the electric impedance of a piezoelectric ceramic is function of the acoustic properties of the medium surrounding it. The validity of this model is displayed by comparing simulated and experimental data. Then, numerical treatments are developed for processing the ceramic electric impedance in order to determine the acoustic properties of the medium surrounding the ceramic. This method is applied to monitor polymerization processes and the validity of the technique is shown from the comparison of the results it gives with those resulting from traditional Barcol hardness measurements.<>

Keywords

hardness testing; piezoceramics; piezoelectric transducers; polymerisation; ultrasonic materials testing; acoustic properties; electric impedance; hardness measurements; inserted piezoelectric sensor; nondestructive evaluation; one-dimensional model; piezoelectric ceramic; polymerization; Attenuation measurement; Ceramics; Composite materials; Curing; Inspection; Manufacturing; Piezoelectric materials; Polymers; Ultrasonic variables measurement; Velocity measurement;

fLanguage

English

Journal_Title

Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on

Publisher

ieee

ISSN

0885-3010

Type

jour

DOI

10.1109/58.393107

Filename

393107