Naslov
Validation of a Coil Impedance Model for Simultaneous Measurement of Electromagnetic Properties and Inner Diameter of a Conductive Tube

Autori
Vasić, Darko ; Bilas, Vedran ; Ambruš, Davorin

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
From the Electrometer to the Networked Instruments: A Giant Step toward a Deeper Knowledge / Demidenko, Serge ; Ottoboni, Roberto ; Petri, Dario ; Piuri, Vincenzo ; Chong Tad Weng, Dave - Piscataway (NJ) : Institute of Electrical and Electronics Engineers (IEEE), 2004, 1406-1409

Skup
IMTC 2004 Instrumentation and Measurement Technology Conference

Mjesto i datum
Como, Italija, 18.05.2004. - 20.05.2004

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
coil impedance model; magnetic permeability; electrical

Sažetak
Remote-field eddy-current technique (RFEC) for nondestructive inspection of conductive tubes cannot differentiate inner from outer defects. Also, the measurement results are greatly affected by electromagnetic properties (electrical conductivity and magnetic permeability) of the tube. Therefore, additional, independent measurement of the electromagnetic properties as well as inner diameter is required. Commercial eddy-current systems successfully measure these parameters using multifrequency, multicoil configuration. In this paper, we investigate the feasibility of the electromagnetic properties and inner diameter measurement with only one coil excited at one frequency. We have developed an optimization algorithm for determination of the tube properties, based on a coil impedance model. Measurements have been performed on several tubes made of different materials. The consistency of the model with the measurement results has been confirmed for investigated frequency range (1 to 50kHz).

Izvorni jezik
Engleski

Znanstvena područja
Elektrotehnika

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