NOISE REDUCTION WITH CONSTRAINED VISCO-ELASTIC LAYERS: A CASE HISTORY
An experiment of applying visco-elastic layers as a noise reduction means at a late stage of ship construction is described. The ship to which these layers were applied has a sister ship on which high noise levels had been measured in the after cabins during trials. In the most unfavourably located cabin a noise level of 74 dB(A) had been measured. For this reason, the experiments with visco-elastic layers were performed in a similar location on the partially-completed ship. It was found that the sound level was reduced 4-5 dB(A) following the application of a 1 mm visco-elastic layer. Order from: BSRA as No. 48,244.
- Proceedings of the International Symposium on Shipboard Acoustics, held at Noordwijkerhout, September 6-10, 1976.
Technisch Physische Dienst TNO-THStieltjesweg 1, Postbus 155
Delft 2208, Netherlands
- KIHLMAN, T
- Publication Date: 1976
- Pagination: 3 p.
- TRT Terms: Damping (Physics); Measurement; Noise; Noise control; Ships
- Uncontrolled Terms: Noise measurement; Noise reduction; Ship noise
- Subject Areas: Environment; Marine Transportation; Vehicles and Equipment;
- Accession Number: 00177223
- Record Type: Publication
- Source Agency: British Ship Research Association
- Report/Paper Numbers: Proceeding
- Files: TRIS
- Created Date: Jun 28 1978 12:00AM