NDLI: Validation of a coil impedance model for simultaneous measurement of electromagnetic properties and inner diameter of a conductive tube

Content Provider	IEEE Xplore Digital Library
Author	Vasic, D. Bilas, V. Ambrus, D.
Copyright Year	2004
Description	Author affiliation: Fac. of Electr. Eng. & Comput., Zagreb Univ., Croatia (Vasic, D.; Bilas, V.)
Abstract	The 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 a 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 50 kHz).
Sponsorship	IEEE Instrumentation and Measurement Soc
Starting Page	1406
Ending Page	1409
File Size	248645
Page Count	4
File Format	PDF
ISBN	078038248X
ISSN	10915281
DOI	10.1109/IMTC.2004.1351329
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2004-05-18
Publisher Place	Italy
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Coils Electromagnetic modeling Conductivity measurement Impedance measurement Electromagnetic measurements Frequency measurement Inspection Permeability measurement Electric variables measurement Magnetic properties
Content Type	Text
Resource Type	Article
Subject	Instrumentation Electrical and Electronic Engineering

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