INTERNAL FRICTION IN SONOSTON - A HIGH DAMPING Mn/Cu-BASED ALLOY FOR MARINE PROPELLER APPLICATIONS I.G. RITCHIE, K.W. SPRUNGMANN and M. SAHOO J. Phys. Colloques, 46 C10 (1985) C10-409-C10-412 DOI: 10.1051/jphyscol:19851092