Experimental Study on Noise Insulation Technology for Cruise Model with Multiple Decks
Noise from passenger upstairs affects the cruise comfort downstairs.Attached with different denoise materials,such as floating floor,damper+steel tile,together with damper+steel tile+mineral wool,a cruise mock-up model of two floors compartment with three decks is built.Impact sound is utilized to simulate the action noise by passenger.The noise measurement results show that the sound pressure level decreases with increasing frequencies;and that the sound pressure level insulated by damper+steel tile+mineral wool is below 45 dB which meets the requirement of class rule while the sound pressure level insulated by floating floor is above 45 dB in low frequencies band.This result indicates the floating floor with damper+steel tile+mineral woolis effective in sound insulation.
cruise mock-up with multiple decksinsulation materialsimpact soundexperimental study
NETL
NSTL
万方数据
