Simultaneous Deformation and Internal Friction Measurements

Abstract
An apparatus is described that will allow simultaneous tensile deformation and internal friction measurements. Kilocycle‐frequency internal‐friction measurements may be made as a function of strain amplitude between 10−10 and 10−4 strain. Tensile strains as large as several percent are possible with only moderate loss of accuracy in the damping measurements. Vibrations at the higher strain amplitudes affect the yield and flow stresses of the sample.