A REVIEW OF PARTICLE IMPACT DAMPING FOR VIBRATION MITIGAION

Mechanical Engineering

There are various machining operations such as boring, turning which are widely used in industry. In such operations dimensional accuracy, surface finish are some of the important attributes from customer point of view. To meet them it is important to control factors which deteriorate its value such as speed, depth of cut, vibration etc. Much work is being done to control adverse effect of speed, depth of cut on accuracy, surface finish but last factor that is vibration is having adverse impact if ignored. So, it is required to be minimized. So to reduce vibrations there are various damping techniques which can be mainly categorized as active and passive damping. Among these active damping requires cumbersome arrangement along with sensors which finally increases cost. On other hand passive damping can be easily combined with vibrating structure. There are various passive damping techniques such as viscous damping, viscoelastic damping etc. but each of it have certain limitations which may be environmental conditions or temperature variations or attachment with vibrating structure without changing its characteristics(such as its stiffness, weight etc.).So recently developed particle impact damping (PID) is proving to be one of the most promising technique which overcomes most of the limitations of above said passive damping techniques which is being reviewed in this paper

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