A reliable assessment of the edge strength becomes an important issue when designing structural glass elements in buildings. However, in the literature the edge strength of glass, dependent on the edge quality, is not well documented. Therefore, in this study an edge strength model was established and validated for commonly used edge finishings, namely ground, arrissed and cut. After testing at a high stress rate, the fracture mirror zone depth and the flaw depth were measured. For every edge finishing a reliable ratio between the fracture mirror zone depth and the initial flaw depth was found. A strength model based on the measurement of the mirror zone depth was established and validated, as the measurement of the mirror zone is much easier than the measurement of the flaw depth. Also, the mirror zone depth is independent of the loading rate and can be useful for forensic engineering.
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July 2015
Research Article|
July 01 2015
Edge strength model for structural glass based on the mirror zone depth Available to Purchase
Marc Vandebroek, MSc, PhD;
Marc Vandebroek, MSc, PhD
Researcher
Laboratory for Research on Structural Models, Department of Structural Engineering, Ghent University, Ghent, Belgium
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Christian Louter, MSc, PhD;
Christian Louter, MSc, PhD
Researcher
Steel Structures Laboratory (ICOM), School of Architecture, Civil and Environmental Engineering (ENAC), École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
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Robby Caspeele, MSc, PhD;
Robby Caspeele, MSc, PhD
Assistant Professor
Laboratory for Research on Structural Models, Department of Structural Engineering, Ghent University, Ghent, Belgium
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Frank Ensslen, Dipl Ing, Dr Ing;
Frank Ensslen, Dipl Ing, Dr Ing
Application Engineer
Semcoglas Holding GmbH, Westerstede, Germany
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Jan Belis, MSc, PhD
Jan Belis, MSc, PhD
Associate Professor
Laboratory for Research on Structural Models, Department of Structural Engineering, Ghent University, Ghent, Belgium
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Publisher: Emerald Publishing
Revision Received:
November 28 2013
Accepted:
October 13 2014
Online ISSN: 1751-7702
Print ISSN: 0965-0911
ICE Publishing: All rights reserved
2015
Proceedings of the Institution of Civil Engineers - Structures and Buildings (2015) 168 (7): 457–468.
Article history
Revision Received:
November 28 2013
Accepted:
October 13 2014
Citation
Vandebroek M, Louter C, Caspeele R, Ensslen F, Belis J (2015), "Edge strength model for structural glass based on the mirror zone depth". Proceedings of the Institution of Civil Engineers - Structures and Buildings, Vol. 168 No. 7 pp. 457–468, doi: https://doi.org/10.1680/stbu.13.00098
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