Sales Launch StrainScanner

arcon provides measuring process for anisotropy

  • Sales Launch StrainScanner – arcon provides measuring process for anisotropy

    Uses and benefits for glass processors

    With the new StrainScanner, automatic and objective inline measuring technology which enables the perfect tempering of glass is available for the first time: When leaving the tempering furnace, photoelastic measurement of the glass panes is performed in real time and analysed with regard to anisotropy. Using the measuring results, the process of tempering can be optimised as required – and the best possible tempering qualities are reproducible.

    The StrainScanner is available for sale now. Use your chance to continuously and lastingly optimise your tempering process and purchase your own StrainScanner. Thanks to the verifiable glass quality you are able to distribute a highly attractive product with clear added value.

    The first StrainScanner was successfully put into operation at arcon in Feuchtwangen, Germany. Make an appointment with us and take a look at the functionality of the StrainScanner yourself.


    Uses and benefits for architects and planners

    New measuring process makes verifiable specification of glass possible

    Anisotropies are optical irregularities in thermally tempered glass which become visible through polarised light. They used to be considered unavoidable and production related. Architects, building owners and investors find them visually disruptive and feel they constitute grounds for complaint.

    Now, anisotropies are a thing of the past: with the StrainScanner, architects and planners have the opportunity to specify anisotropy-optimised glass and to have the desired quality backed up by an objective measuring process. Using measured
    sample panes, tempering qualities can be precisely stipulated, avoiding any unpleasant surprises with respect to the visual quality of a glass facade.

    The StrainScanner is the result of successful cooperation between arcon, the technology brand of the company group Arnold Glas, and the company ilis from Erlangen, a leading supplier of measuring technology for the automatic and objective determination of residual stress in glass.



  • Unique measuring process

    The StrainScanner sees only the residual stress in the material. The measuring result is therefore not dependent on other influences such as coatings or tinting, for example. This means there is no need to constantly recalibrate the measuring system when changing products, which increases the reliability of the measuring results.

    Additionally to the amount of residual stress, the StrainScanner also determines the orientation of residual stress in toughened glass. Only with information about both parameters qualified statements about possible anisotropy effects can be made.

    Evaluation criterion isotropy value

    The isotropy value, which is calculated from the amount and orientation of stress birefringence using statistical methods, indicates the surface ratio of a pane which is free from disruptive stress birefringence effects (anisotropies), even under unfavourable conditions. In accordance with the generally accepted guidelines for the assesment of visual Quality, the isotropy value is being determined seperatedly for the main area as well as for the edges. For architects and planners it is now possible to determine the desired product Quality in their proposals.

    Thanks to its measuring accuracy and reproducibility, the StrainScanner measuring results provide a never-seen-before depth of information with respect to heat treatment in thermal tempering. The StrainScanner is thus the key to perfect tempering  – an advantage from which glass processors can clearly benefit.

    Thanks to the inline process, the optical retardations recorded in thermally tempered glass are visualised immediately. (source: ilis)