Internal friction measurements have been carried out for a number of face-centred cubic CuNiZn alloys, especially the alloys around the composition Cu2NiZn. Damping measurements are carried out using an inverted K6-type pendulum equipped with an optical detector. With an extrapolation in the ageing time relaxation data for the disordered structure were obtained. Also shear moduli and Young's mo...

A coarse-grained bead-spring-dashpot chain model with the dashpots representing presence of internal friction is solved exactly numerically for case chains more than two beads. Using a decoupling procedure to remove explicit coupling bead’s velocity that its nearest neighbors, governing set stochastic differential equations are Brownian dynamics simulations obtain material functions in oscillat...

Internal friction in polycrystalline( Nix Zn,., ) Fe204( where x =0.2, 0.6 and 0.8) films has been measured using one crystal composite oscillator method. The internal friction was recorded at three different frequencies i.e, 60, 100 and 160 KHz in the temperature range of 80 to 600 K. The films used are prepared by rf-sputtering method on quartz plate substate. X-ray analysis was carried out o...