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An eddy-current-based sensor for preventing knots in metallic wire drawing processes

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10.1080/10589759.2010.545128
 
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hdl:2117/12811

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Esteban Dalmau, Bernat
Riba Ruiz, Jordi-RogerMés informacióMés informacióMés informació
Baquero Armans, Grau
Document typeArticle
Defense date2011-04-07
Rights accessOpen Access
All rights reserved. This work is protected by the corresponding intellectual and industrial property rights. Without prejudice to any existing legal exemptions, reproduction, distribution, public communication or transformation of this work are prohibited without permission of the copyright holder
Abstract
During metallic wire drawing processes, the presence of knots and the failure to detect them can lead to long production interruptions, significant economic losses and a lower quality of final product. Consequently, there is a pressing need to develop methods for real-time detection and prevention of this fault. In this paper, a sensor to prevent the formation of knots during the metallic wire drawing process is presented and evaluated by means of experimental data. This fast, inexpensive, non-contact sensor is based on electromagnetic principles such as eddy current induction, magnetic reluctance variations and magnetic coupling. The proposed sensor without direct contact can detect knots in a target metallic wire by measuring the impedance variations of a calibrated sensing coil caused by either a knot or an unwound loop rising from a wire rod. The incorporation of this type of sensor into a wire-drawing machine can avoid the tightening of the knot, thereby reducing downtime and increasing the security and reliability of the process. Experiments were conducted using a scale model of the above proposed system. This allowed highlighting the sensor’s potential by carrying out an automatic, real-time knot detection during steel wire drawing
CitationEsteban Dalmau, B.; Riba Ruiz, J.-R.; Baquero Armans, G. An eddy-current-based sensor for preventing knots in metallic wire drawing processes. "Nondestructive testing and evaluation", 7 Abril 2011, vol. 26, núm. 2, p. 169-180. 
URIhttp://hdl.handle.net/2117/12811
DOI10.1080/10589759.2010.545128
ISSN1058-9759
Publisher versionhttp://dx.doi.org/10.1080/10589759.2010.545128
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