Measurement of Complete Residual Stress Fields in Tempered Glass Plates

Dominique Lochegnies, Université de Valenciennes
Eric Romero, Université de Valenciennes
Johan Anton, GlasStress Ltd
Andrei Errapart, Tallinn University of Technology
Hillar Aben, GlasStress Ltd

In industrial glass tempering, information about the compressive residual stress field on the glass surface is important to guarantee the quality of the glass product. In this paper we investigate stress in flat glass specimens that have been tempered on an industrial tempering unit, using.both static and oscillating tempering. Using both computational fluid dynamics and computational mechanics models, residual stresses inside the tempered glass plate are computed. Validation of the numerical results is achieved using stress measurement with a compact scattered light polariscope.

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The Authors

	Dominique Lochegnies University of Valenciennes Pr D. Lochegnies is a specialist of numerical modelling of glass forming and tempering. Since 90's, he is managing an academic research team in the University of Valenciennes in this area and is the c... Read more
	Prof. Dr. Dominique Lochegnies Head of "Glass Formoing and Tempering" LAMIH Pr D. Lochegnies is a specialist of numerical modelling of glass forming and tempering. Since 90's, he is managing an academic research team in the University of Valenciennes in this area and is the c... Read more
	Mr. Hillar Aben DSc, lab Head Institute of Cybernetics, TU Tallinn Hillar Aben is CEO of GlasStress Ltd. and also Head of the Laboratory of Photoelasticity of the Institute of Cybernetics at the Tallinn University of Technology. His main professional activity has bee... Read more
	Mr. Marco Tronchetti Via Pirellona Andrei Errapart received his BSc degree from Tallinn University of Technology in 2002. He joined Laboratory of Photoelasticity in 1999. He has been involved in the research of the photoelastic tomogra... Read more