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Deformations and strain energy in fragments of tempered glass: experimental and numerical investigation

Deformations and strain energy in fragments of tempered glass: experimental and numerical... The present paper is adding to the current knowledge by experimentally investigating the change of strain in a fragment of tempered glass. This is done by comparing the surface shape before and after fracture. The present work also aims at validating a FE-model for estimating the remaining strain energy and thereby the stress in a fragment post failure. The FE-model have been established in previous work Nielsen (Glass Struct Eng, 2016. doi: 10.1007/s40940-016-0036-z ) and is applied here on the specific geometry and initial state of the investigated fragments. This is done by measuring the residual stresses using a Scattered Light Polariscope before failure and thereby determining the initial stress state. The Geometry of the investigated fragment is found by means of a 3D scan. The surface topology of the fragment is found by letting a stylus traverse the surface and recording the shape. These information are then used for setting up a FE-model for calculating the stresses and strains left in the fragment after failure and compare the deformation to the measured. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Glass Structures & Engineering Springer Journals

Deformations and strain energy in fragments of tempered glass: experimental and numerical investigation

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Publisher
Springer Journals
Copyright
Copyright © 2017 by Springer International Publishing Switzerland
Subject
Engineering; Building Construction and Design; Structural Materials; Building Materials
ISSN
2363-5142
eISSN
2363-5150
DOI
10.1007/s40940-017-0043-8
Publisher site
See Article on Publisher Site

Abstract

The present paper is adding to the current knowledge by experimentally investigating the change of strain in a fragment of tempered glass. This is done by comparing the surface shape before and after fracture. The present work also aims at validating a FE-model for estimating the remaining strain energy and thereby the stress in a fragment post failure. The FE-model have been established in previous work Nielsen (Glass Struct Eng, 2016. doi: 10.1007/s40940-016-0036-z ) and is applied here on the specific geometry and initial state of the investigated fragments. This is done by measuring the residual stresses using a Scattered Light Polariscope before failure and thereby determining the initial stress state. The Geometry of the investigated fragment is found by means of a 3D scan. The surface topology of the fragment is found by letting a stylus traverse the surface and recording the shape. These information are then used for setting up a FE-model for calculating the stresses and strains left in the fragment after failure and compare the deformation to the measured.

Journal

Glass Structures & EngineeringSpringer Journals

Published: Jun 8, 2017

References