The Effect of Edge Processing in Thin Glass for Cold Bending Applications

Cold bent glass is nowadays of primary importance both for industrial and civil applications. In fact, thin glass with a maximum thickness of 1.5 mm is often part of a wide range of technological devices and architectural surfaces (e.g. touchscreens, displays, mirrors, optical instruments, cladding...

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Autores principales:	Marco Cervio, Giovanni Muciaccia, Gianpaolo Rosati
Formato:	article
Lenguaje:	EN
Publicado:	Challenging Glass Conference 2018
Materias:	Thin glass Edge processing Cold bending Strength Clay industries. Ceramics. Glass TP785-869
Acceso en línea:	https://doaj.org/article/4ed5968954dc44d0adfb69da3332a7b9
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spelling	oai:doaj.org-article:4ed5968954dc44d0adfb69da3332a7b92021-12-04T05:12:24ZThe Effect of Edge Processing in Thin Glass for Cold Bending Applications10.7480/cgc.6.21892589-8019https://doaj.org/article/4ed5968954dc44d0adfb69da3332a7b92018-05-01T00:00:00Zhttps://proceedings.challengingglass.com/index.php/cgc/article/view/85https://doaj.org/toc/2589-8019 Cold bent glass is nowadays of primary importance both for industrial and civil applications. In fact, thin glass with a maximum thickness of 1.5 mm is often part of a wide range of technological devices and architectural surfaces (e.g. touchscreens, displays, mirrors, optical instruments, claddings and building interiors). The manufacturing process of cold bent glass is generally considered faster and less demanding in terms of necessary equipment with respect to hot bending or casting techniques. On the contrary, both the design of the manufacturing procedure and of the products are still a challenge and they are mainly based on a trial and error approach. Generalized defects and imperfections are always present on the surface of the raw glass product, while another significant source of flaws is usually localized at the edges and it is associated with the specific cutting technique and edges processing. The aim of this work is to experimental investigate the influence of the edge processing on the failure strength of 1.5 mm glass plates by means of four point bending tests. Two edge conditions are taken into account: manual diamond cut and ground by hand-operated tool which introduces randomly diffused small-size flaws. Test results are then statistically assessed and compared with the stresses that arise during the cold bending process due to the imposed curvature. In the end, grinding somehow increases the level of damage as it increases the number of flaws. On the contrary, the improved uniformity of the damage leads to less scattered resistance values. These allows to achieve smaller curvature radii or, for a given design radius, it reduces accidental failures during the cold bending process. Marco CervioGiovanni MuciacciaGianpaolo RosatiChallenging Glass ConferencearticleThin glassEdge processingCold bendingStrengthClay industries. Ceramics. GlassTP785-869ENChallenging Glass Conference Proceedings, Vol 6, Iss 1 (2018)
institution	DOAJ
collection	DOAJ
language	EN
topic	Thin glass Edge processing Cold bending Strength Clay industries. Ceramics. Glass TP785-869
spellingShingle	Thin glass Edge processing Cold bending Strength Clay industries. Ceramics. Glass TP785-869 Marco Cervio Giovanni Muciaccia Gianpaolo Rosati The Effect of Edge Processing in Thin Glass for Cold Bending Applications
description	Cold bent glass is nowadays of primary importance both for industrial and civil applications. In fact, thin glass with a maximum thickness of 1.5 mm is often part of a wide range of technological devices and architectural surfaces (e.g. touchscreens, displays, mirrors, optical instruments, claddings and building interiors). The manufacturing process of cold bent glass is generally considered faster and less demanding in terms of necessary equipment with respect to hot bending or casting techniques. On the contrary, both the design of the manufacturing procedure and of the products are still a challenge and they are mainly based on a trial and error approach. Generalized defects and imperfections are always present on the surface of the raw glass product, while another significant source of flaws is usually localized at the edges and it is associated with the specific cutting technique and edges processing. The aim of this work is to experimental investigate the influence of the edge processing on the failure strength of 1.5 mm glass plates by means of four point bending tests. Two edge conditions are taken into account: manual diamond cut and ground by hand-operated tool which introduces randomly diffused small-size flaws. Test results are then statistically assessed and compared with the stresses that arise during the cold bending process due to the imposed curvature. In the end, grinding somehow increases the level of damage as it increases the number of flaws. On the contrary, the improved uniformity of the damage leads to less scattered resistance values. These allows to achieve smaller curvature radii or, for a given design radius, it reduces accidental failures during the cold bending process.
format	article
author	Marco Cervio Giovanni Muciaccia Gianpaolo Rosati
author_facet	Marco Cervio Giovanni Muciaccia Gianpaolo Rosati
author_sort	Marco Cervio
title	The Effect of Edge Processing in Thin Glass for Cold Bending Applications
title_short	The Effect of Edge Processing in Thin Glass for Cold Bending Applications
title_full	The Effect of Edge Processing in Thin Glass for Cold Bending Applications
title_fullStr	The Effect of Edge Processing in Thin Glass for Cold Bending Applications
title_full_unstemmed	The Effect of Edge Processing in Thin Glass for Cold Bending Applications
title_sort	effect of edge processing in thin glass for cold bending applications
publisher	Challenging Glass Conference
publishDate	2018
url	https://doaj.org/article/4ed5968954dc44d0adfb69da3332a7b9
work_keys_str_mv	AT marcocervio theeffectofedgeprocessinginthinglassforcoldbendingapplications AT giovannimuciaccia theeffectofedgeprocessinginthinglassforcoldbendingapplications AT gianpaolorosati theeffectofedgeprocessinginthinglassforcoldbendingapplications AT marcocervio effectofedgeprocessinginthinglassforcoldbendingapplications AT giovannimuciaccia effectofedgeprocessinginthinglassforcoldbendingapplications AT gianpaolorosati effectofedgeprocessinginthinglassforcoldbendingapplications
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The Effect of Edge Processing in Thin Glass for Cold Bending Applications

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