<p> An extensive experimental study is made of the general behaviour of the impact dampers, using a mechanical model. Coefficient of restitution, Mass-ratio, and Gap-factor are the parameters which were changed during the course of investigation and their effects were observed. </p> <p> The noise level has been eliminated successfully. Dampers containing two particles in a single container are compared with single particles dampers and the latter are found to be relatively efficient. Results with the mass particle oscillating in the container filled with fluid indicate that friction forces acting on the mass-particle are detrimental to the efficiency of the damper. </p> / Thesis / Master of Engineering (ME)