Online NDE of mechanical-technological material characteristics of cold rolled steel strips by using the harmonic analysis of eddy current signals

Issue title: Special Volume: Proceedings of the eleventh International Symposium on Applied Electromagnetics and Mechanics ISEM-Versailles ISEM 03

Article type: Research Article

Authors: Heutling, B.^{a; *} | Reimche, W.^a | Krys, A.^a | Grube, L.^a | Stock, M.^a | Bach, Fr.-W.^a | Kroos, J.^b | Stolzenberg, M.^b | Westkämper, G.^b

Affiliations: [a] Institut für Werkstoffkunde, Universität Hannover, Appelstr. 9B, D-30167 Hannover | [b] Salzgitter Flachstahl GmbH, Eisenhüttenstr. 99, 38223 Salzgitter

Correspondence: [*] Corresponding author. E-mail: heutling@iw.uni-hannover.de

Abstract: The online-measurement of mechanical-technological characteristic values is made necessary by the need of the steel plants to control the quality of steel sheets continuously during its production under rough industrial environmental conditions. In this paper it is shown that continuous online measurements based solely on the data of the harmonic analysis of eddy current signals are well established by now. The presented online measuring system provides reliable mechanical-technological characteristic values showing clearly changes of the material which are caused e.g. by variations of the furnace temperature or degree of skin-passing or levelling.

DOI: 10.3233/JAE-2004-606

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 19, no. 1-4, pp. 445-451, 2004