The definition of glass is not uniformly regulated. The German standard DIN 1259-1:2001-09 [85] defines glass as „an inorganic product of fusion which has been cooled to a rigid condition without crystallizing“. [86] gives the definition of glass as a frozen super-cooled liquid in the physic-chemical sense. Although the atomic structure of glass is comparable to that of a liquid, the mechanical properties are those of a solid. When liquid glass cools, no phase transition is achieved. The transition from liquid to solid takes place in a temperature range, beginning at the glass transition temperature [87, 88]. No crystallization occurs during the entire cooling process. A definition of glass as materials that have a glass transition temperature would include organic glasses, for example PMMA. The quest for a general definition is going on worldwide. Although the general usage of the word glass has changed considerably over the last centuries, in a scientific context, it usually depends on whether the macro- or microscopic behavior is considered [37, 86, 89, 90].
Theoretical Background
Mechanik, Werkstoffe und Konstruktion im Bauwesen
A Model for the Stochastic Fracture Behavior of Glass and Its Application to the Head Impact on Automotive Windscreens ; Chapter : 2 ; 9-27
2022-03-03
19 pages
Article/Chapter (Book)
Electronic Resource
English
Springer Verlag | 2024
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