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oustic-resonance spectroscopy enables obtaining the complete elastic-stiffness tensor Cy in one measurement of the macroscopic-vibration frequencies of a regular-shape solid. Because the total elastic stiffness Cy contains both real and imaginary parts, Cy = Cy (1 + i!-1y), in principle one can simultaneously determine the complete internal-friction tensor Q-1y. Here, we give the necessary mathematical analysis together with applications to monocrystal magnesium oxide and to monocrystal silicon with two dislocation densities. Briefly, we describe our results in terms of the Koehler-Granato-Lucke vibrating-string modelof dislocation damping.
Heyliger, P.
, Ledbetter, H.
and Kim, S.
(2021),
The Internal-Friction Tensor Q-1<sub>iJ</sub>, L. Magalas, (ED.) Mechanical Spectroscopy
(Accessed April 25, 2024)