Material characterization in situ using ultrasound measurements

Author

Gunarathne, G.P.P. ; Christidis, Konstantinos

Author_Institution

Dept. of Electron. & Electr. Eng., Robert Gordon Univ., Aberdeen, UK

Volume

51

Issue

2

fYear

2002

fDate

4/1/2002 12:00:00 AM

Firstpage

368

Lastpage

373

Abstract

This paper presents a novel approach to material characterization in situ using ultrasound. A major problem associated with the use of ultrasound in such measurement is the distortion of signals due to nonplanar cylindrical surface profiles of the targets. This was solved by developing compensation techniques whereby the received signals were normalized with respect to that of equivalent planar targets. Compensated ultrasonic signals were then used to obtain the characteristic acoustic properties of the material to identify the material in situ with a statistical probability using stored data

Keywords

acoustic impedance; compensation; feature extraction; statistical analysis; ultrasonic materials testing; acoustic impedance; compensated ultrasonic signals; compensation; curvature compensation; distortion of signals; in situ; nonplanar cylindrical surface profiles; scale deposits; statistical probability; ultrasonic feature extraction; Acoustic distortion; Acoustic materials; Acoustic measurements; Attenuation; Distortion measurement; Feature extraction; Impedance; Pipelines; Ultrasonic imaging; Ultrasonic variables measurement;

fLanguage

English

Journal_Title

Instrumentation and Measurement, IEEE Transactions on

Publisher

ieee

ISSN

0018-9456

Type

jour

DOI

10.1109/19.997839

Filename

997839