Eleventh International Conference on Internal Friction and Ultrasonic Attenuation in Solids
J. Phys. IV France 06 (1996) C8-609-C8-612
Study of Shear Viscosity of Amorphous MaterialsY. Hiki1, H. Kobayashi2 and H. Takahashi3
1 Faculty of Science, Tokyo Institute of Technology, Emeritus 39-3-303 Motoyoyogi, Shibuya-ku, Tokyo 151, Japan
2 National Research Laboratory of Metrology, AIST, MITI, Umezono, Tsukuba 305, Japan
3 Applied Physics Group, Faculty of Engineering, Ibaraki University Nakanarusawa, Hitachi 316, Japan
Viscoelastic properties of amorphous solids deformed under uniform shear stress were studied using a kind of sandwich method with utilizing a sensitive optical technique. Time-dependent deformation data were analyzed on the basis of a mechanical model of anelasticity plus viscosity. Experiments were performed to determine the temperature dependence of viscosity for several kinds of inorganic glasses and an amorphous polymer below their glass transition temperatures. Activation energies controlling the relaxational viscosity have been determined.
© EDP Sciences 1996