The influence of stress on double-glass components

How does glass reduce stress?

To achieve a relaxation of stresses, the glass requires a homogeneous heating of the entire component so that stress can be released through the plastic behaviour of the heated material. The cooling through the transformation phase of the glass has to be slow enough to avoid further stress being locked in.

Why is glass strength influenced by size?

Because of sensitivity to defects, the glass strength is influenced by the size of the specimen and by the ratio between the two principal components of surface stress (Beason and Morgan 1984).

Why does glass bonding fail prematurely?

Adhesives with an extremely stiff response induce high stress concentrations in small areas and, consequently, the bonding system may fail prematurely at the glass adherend governed by localized phenomena, such as the low quality of glass processing methods, the high density of surfaces flaws and localized damage during handling. 1. Introduction

Does annealed glass have residual stress?

Measurements of residual stress prior to heat treatment are very consistently in the acceptable range for annealed glass [Haldimann et al, 2008]. Table 2: principle residual stress on specimen.

Does temperature affect the residual stress of glass specimen?

6. Conclusion Temperature impact on the residual stress of glass specimen is shown in the results obtained through experimental testing of borosilicate specimen. The importance of an additional annealing process can be observed, as residual stress is clearly reduced.

Does heat bonding cause residual stress in soda lime silica and borosilicate glass?

One approach towards transparent glass connections is a heat bonding process based on the principles of welding. This paper investigates the level of residual stress in soda lime silica and borosilicate glass caused by a heat-based connection or forming process.