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Proceedings Paper

Numerical modeling and experimental study of motion-induced remote field current effect and its applications to online inspection and quality examination of rolling metallic strips
Author(s): Yushi Sun; Satish S. Udpa; William Lord; Lalita Udpa; Tianhe Ouyang
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Paper Abstract

Currently, rolled metallic strips and sheets are inspected off-line, which is costly, time consuming and not ideal for quality control. A well designed online diagnostic and control system for metal rolling process may largely reduce cost, improve quality, and hence enhance competitiveness of the product. The overall objective of this paper is to study a new nondestructive measurement system for on-line diagnostics and control of metallic rolling process using motion-induced remote-field eddy-current (MIRFEC) effect. The system can be used to monitor in real time the rolled metallic strips/sheets for possible anomalies, inclusions, voids, bubbles, lamination, as well as measuring variations of its properties. The potential advantages of the MIRFEC system include simplicity, robustness, low cost, high reliability, quick and accurate signal classification and characterization that can used for real-time process control, or off-line data analysis. The technique also allows operation at high temperature, large lift-off and vibration, and high rolling speed. Results of finite element modeling of the MIRFEC effect and experimental measurement data obtained from a prototype system are presented.

Paper Details

Date Published: 9 June 2000
PDF: 12 pages
Proc. SPIE 3995, Nondestructive Evaluation of Highways, Utilities, and Pipelines IV, (9 June 2000); doi: 10.1117/12.387851
Show Author Affiliations
Yushi Sun, Iowa State Univ. (United States)
Satish S. Udpa, Iowa State Univ. (United States)
William Lord, Iowa State Univ. (United States)
Lalita Udpa, Iowa State Univ. (United States)
Tianhe Ouyang, Innovative Materials Testing Technologies, Co. (United States)

Published in SPIE Proceedings Vol. 3995:
Nondestructive Evaluation of Highways, Utilities, and Pipelines IV
A. Emin Aktan; Stephen R. Gosselin; Stephen R. Gosselin, Editor(s)

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