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Title: Probing temperature-dependent viscoelastic properties of glassy materials using impact induced vibration - Theory and experiments
Authors: Wang, J
Ruan, H 
Keywords: Glass
Temperature dependence
Young's modulus
Issue Date: 2017
Publisher: Scientific.Net
Source: Key engineering materials, 2017, v. 725, p. 116-121 How to cite?
Journal: Key engineering materials 
Abstract: The viscoelastic properties of glass under different temperature are essential for the high-precision thermo-plastic-forming of glass. But it is exceptionally difficult to establish a quantitative relation between the thermal history and the viscoelasticity owing to the lack of constitutive model of glassy materials' relaxation. The present work investigates the validity of Young's modulus measurement in impulse excitation technology and then the viscosity predicted by Kelvin and Maxwell model. It is demonstrated that the classical Kelvin model, leads to the seemingly unphysical result that viscosity increases with temperature since the experimental loss rate of damped vibration increases with temperature. Although Maxwell model can be employed to explain the positive temperature dependence of loss rate, the magnitude is even smaller than the viscosity at glass transition temperature and is therefore also unreasonable. The further theoretical work suggests the intermediate zone of Kelvin and Maxwell model.
Description: 13th Asia-Pacific Symposium on Engineering Plasticity and its Applications, AEPA 2016, Japan, 4-8 December 2016
ISBN: 9783035710243
ISSN: 1013-9826
EISSN: 1662-9795
DOI: 10.4028/
Appears in Collections:Conference Paper

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