Influence of Regrinding Depth on Edge Strength of Tempered Glass

Designers use exposed glass edges for decoration, for example within glass steps, glass beams or glass columns. This application requires a mechanical finishing to achieve a high optical quality by compensating a misalignment of the glasses, for example an edge displacement, or a supernatant of the...

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Autores principales:	Bernhard Weller, Katharina Lohr, Michael Engelmann
Formato:	article
Lenguaje:	EN
Publicado:	Challenging Glass Conference 2016
Materias:	Tempered Glass Edge Grinding Post-processing Laminated Glass Reground Edge Clay industries. Ceramics. Glass TP785-869
Acceso en línea:	https://doaj.org/article/12a3a512d48d4466b53320afc32584ca
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spelling	oai:doaj.org-article:12a3a512d48d4466b53320afc32584ca2021-12-04T05:12:38ZInfluence of Regrinding Depth on Edge Strength of Tempered Glass10.7480/cgc.5.24332589-8019https://doaj.org/article/12a3a512d48d4466b53320afc32584ca2016-06-01T00:00:00Zhttps://proceedings.challengingglass.com/index.php/cgc/article/view/155https://doaj.org/toc/2589-8019Designers use exposed glass edges for decoration, for example within glass steps, glass beams or glass columns. This application requires a mechanical finishing to achieve a high optical quality by compensating a misalignment of the glasses, for example an edge displacement, or a supernatant of the foil resulting from the lamination process of safety glass. Regrinding of annealed glass is allowed without restrictions. In the case of tempered glass there is a risk of premature failure caused by a reduction of the compression zone. During a research project at the Institute of Building Construction, Technische Universität Dresden, the impact of the grinding depth of tempered glass on the bearing capacity of the edge is investigated. The goal is to give a strength value of reground tempered glass edges. We conducted four-point bending tests on glass beams about the strong axis in the style of EN 1288-3. The experimental investigation included 82 glass beams both made from fully tempered and heat strengthened glass in thicknesses of 6 mm with reground edges in varied grinding depths and additional reference specimens. The experimental investigation shows that an increasing grinding depth induces a decrease in edge strength. In the presented case, the result of the test series allows the definition of reduction factors for the calculation of the bending strength of glass beams with reground edges. Bernhard WellerKatharina LohrMichael EngelmannChallenging Glass ConferencearticleTempered GlassEdgeGrindingPost-processingLaminated GlassReground EdgeClay industries. Ceramics. GlassTP785-869ENChallenging Glass Conference Proceedings, Vol 5 (2016)
institution	DOAJ
collection	DOAJ
language	EN
topic	Tempered Glass Edge Grinding Post-processing Laminated Glass Reground Edge Clay industries. Ceramics. Glass TP785-869
spellingShingle	Tempered Glass Edge Grinding Post-processing Laminated Glass Reground Edge Clay industries. Ceramics. Glass TP785-869 Bernhard Weller Katharina Lohr Michael Engelmann Influence of Regrinding Depth on Edge Strength of Tempered Glass
description	Designers use exposed glass edges for decoration, for example within glass steps, glass beams or glass columns. This application requires a mechanical finishing to achieve a high optical quality by compensating a misalignment of the glasses, for example an edge displacement, or a supernatant of the foil resulting from the lamination process of safety glass. Regrinding of annealed glass is allowed without restrictions. In the case of tempered glass there is a risk of premature failure caused by a reduction of the compression zone. During a research project at the Institute of Building Construction, Technische Universität Dresden, the impact of the grinding depth of tempered glass on the bearing capacity of the edge is investigated. The goal is to give a strength value of reground tempered glass edges. We conducted four-point bending tests on glass beams about the strong axis in the style of EN 1288-3. The experimental investigation included 82 glass beams both made from fully tempered and heat strengthened glass in thicknesses of 6 mm with reground edges in varied grinding depths and additional reference specimens. The experimental investigation shows that an increasing grinding depth induces a decrease in edge strength. In the presented case, the result of the test series allows the definition of reduction factors for the calculation of the bending strength of glass beams with reground edges.
format	article
author	Bernhard Weller Katharina Lohr Michael Engelmann
author_facet	Bernhard Weller Katharina Lohr Michael Engelmann
author_sort	Bernhard Weller
title	Influence of Regrinding Depth on Edge Strength of Tempered Glass
title_short	Influence of Regrinding Depth on Edge Strength of Tempered Glass
title_full	Influence of Regrinding Depth on Edge Strength of Tempered Glass
title_fullStr	Influence of Regrinding Depth on Edge Strength of Tempered Glass
title_full_unstemmed	Influence of Regrinding Depth on Edge Strength of Tempered Glass
title_sort	influence of regrinding depth on edge strength of tempered glass
publisher	Challenging Glass Conference
publishDate	2016
url	https://doaj.org/article/12a3a512d48d4466b53320afc32584ca
work_keys_str_mv	AT bernhardweller influenceofregrindingdepthonedgestrengthoftemperedglass AT katharinalohr influenceofregrindingdepthonedgestrengthoftemperedglass AT michaelengelmann influenceofregrindingdepthonedgestrengthoftemperedglass
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Influence of Regrinding Depth on Edge Strength of Tempered Glass

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