Production Control of Residual Stresses

As in all industrial production lines, quality is controlled throughout the glass process on‐line or off‐line. Glass shows an interesting photoelastic property that allows for the determination of stress levels. The residual stresses are very important when tempering (strengthening) is concerned. Th...

Full description

Saved in:
Bibliographic Details
Published inGlass pp. 235 - 246
Main Author Le Bourhis , Eric
Format Book Chapter
LanguageEnglish
Published Germany Wiley 2014
Wiley‐VCH Verlag GmbH & Co. KGaA
Subjects
edge stress meters
flat glass
photoelasticity
production control
residual stresses
surface stress meters
Online AccessGet full text

Cover

More Information
Summary:As in all industrial production lines, quality is controlled throughout the glass process on‐line or off‐line. Glass shows an interesting photoelastic property that allows for the determination of stress levels. The residual stresses are very important when tempering (strengthening) is concerned. The most important way to introduce residual stresses is thermal tempering. Edge stresses appear because of the more rapid cooling of the glass in the presence of the edge surface. Automatic stress meters have been commercialized and allow for scanning the ribbon from side to side and extracting the stresses map of the ribbon. Another important apparatus is the surface stress meter that allows measurement of the surface stresses. The surface stress meters are adapted to the measurement of thermally induced stresses in float glass.
ISBN:3527337059
9783527337057
DOI:10.1002/9783527679461.ch11