Temperature Variation of the Elastic Moduli of Glass

JSGT 1952 V36 T090-T104

Temperature regions of non-elastic behaviour are typical of glass, and can be utilised to obtain a better understanding of its structure and mechanical behaviour. Stress-induced thermal diffusion, stress-induced ionic diffusion and certain other phenomena which require time for their completion are processes which cause irregular elastic behaviour. These processes manifest themselves in various ways, such as internal friction peaks, relaxation of elastic moduli and recoverable creep. For example, the variation with temperature of the dynamic shear modulus of plate glass, a typical soda–lime–silica glass, can be explained by referring to the more easily understood variation with temperature of the internal friction.

J. V. Fitzgerald, K. M. Laing & G. S. Bachman