Background Internal Friction of Some Pure Metals at Low Frequencies

Abstract
The background internal friction of Al, Cu, and Mg at 300°K was investigated as a function of plastic deformation, gamma‐ray and neutron irradiation, and frequency (1 cps–40 kc/sec). The results suggest that the Granato‐Lücke vibrating‐string model does not adequately describe the results at low frequencies.