제진도료가 전동차 실내소음에 미치는 영향에 관한 연구

Study on the Effect of the Sound-Deadening Paint on the Inside Running Noise in Railway Vehicles

Internal running noise of a vehicle running in open field is the summation of air borne noise and structure-borne noise. In this paper vibration damping characteristics of carbody are investigated to see the effect of sound-deadening paint on the internal running noise. By using SEA method, vibration levels of complete train with and without sound-deadening paint are estimated and structure borne noise levels are estimated.