Practical Industrial Methods of Increasing Structural Damping in Machinery

Industrial machinery is made of plates, shells and beams attached together either by welding or by halting.The damping level of these wnnected structures is usually very high and often of the order of 0.0l.However, the ringing vibrational responses are very much dependent on the damping of the structure.Therefore in order to reduce the sound radiation from these structures, damping level of the structure components has to be further increased.Damping by attached viscoelastic layers has been used successfully for many years and can be very effective for light beams and plate-like structures.'lhe