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, 34 (9), 92

Relaxation Time and Viscosity of Fused Silica Glass at Room Temperature

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Relaxation Time and Viscosity of Fused Silica Glass at Room Temperature

M Vannoni et al. Eur Phys J E Soft Matter.

Abstract

Cases of long-term deformation of fused silica glass at room temperature attributed to the action of gravity have been reported. Further experimental investigations now provide evidence of time-dependent viscous behavior, with a time constant of the order of 10 years. Data relating to a pair of fused silica reference plates are presented, showing the overall deformation occurred over the years; considerations on the pertaining viscosity with aging are also given. An account of the observed relaxation process in terms of the Kelvin-Voigt model for linear viscoelasticity is provided.

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