Development of a Mobile Device for the Evaluation of the Current in Situ Stress Condition in Glass
In present-day practice, monitoring the installation process and the utilisation of glass and hybrid components, e.g. glass/steel or glass/plastic, has become increasingly important. To date, the quality control options for built-in glass is limited. It is not yet possible to provide a clear short-term statement regarding a potential irregular stress; this may arise due to the incorrect assembly of a glass fitting, for example. There are no accepted standard procedures to evaluate the in-situ stress condition of a built-in glass. The intention of this paper is to address this gap with the aid of photoelasticity as an indirect measuring method in a coordinated way with numerical simulation based on finite element analysis. To measure the two-dimensional qualitative stresses in glass and plastic components, a concept and a functional model for a mobile device, including user software, will be developed. By recording photoelastic measurements with this proposed mobile measuring unit, a qualitative statement about the glass stress behaviour for bonded and mechanical connections can be defined and converted into a quantitative statement via a correlation of experimental and numerical results. This article describes the associated framework for experimental investigations and numerical simulations for bonded and mechanical joints in glass constructions.
Strength & Stability
Keywords:load-bearing glass, in situ stress condition, photoelasticity, finite element analysis, design, mobile device
Copyright (c) 2018 Benjamin Schaaf, Björn Abeln, Carl Richter, Markus Feldmann, Marcus Glaser, Jörg Hildebrand, Jean Pierre Bergmann
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