Through-Transmission Impedance Measurements on Moving Metallic Sheets Kahn, Arnold Mester, Michael 2018-02-14T06:42:06.000 2020-06-30T06:39:24Z 2020-06-30T06:39:24Z Wed Jan 01 00:00:00 UTC 1992 1992
dc.description.abstract <p>Eddy current measurement of electrical resistivity provides a method of sensing temperature during metals processing, thus offering a method of feedback control [1,2]. This method assumes a known resistivity-temperature relation for the alloy being processed. However, in many common processing configurations a measurement of the impedance of the coil system can depend on the velocity of the product being tested. In the through-transmission (abbreviated thru-trans) configuration for monitoring moving metallic sheets, the component of the exciting magnetic field normal to the sheet induces an electric field in the sheet transverse to the direction of the velocity. This modifies the induced current distribution and thus changes the shielding of the field at the receiver coil relative to the condition for the static case. This effect is significant even in the case of extruded aluminum moving at 150 ft/min. In high speed rolling, at 1000 ft/min or greater, the effect of velocity is even more significant.</p>
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dc.identifier archive/
dc.identifier.articleid 2920
dc.identifier.contextkey 5800847
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath qnde/1992/allcontent/31
dc.language.iso en
dc.relation.ispartofseries Review of Progress in Quantitative Nondestructive Evaluation
dc.source.bitstream archive/|||Fri Jan 14 23:30:07 UTC 2022
dc.source.uri 10.1007/978-1-4615-3344-3_31
dc.subject.disciplines Electromagnetics and Photonics
dc.title Through-Transmission Impedance Measurements on Moving Metallic Sheets
dc.type event
dc.type.genre article
dspace.entity.type Publication
relation.isSeriesOfPublication 289a28b5-887e-4ddb-8c51-a88d07ebc3f3
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