FLOATING FLOORS FOR NOISE REDUCTION IN SHIPS

A mathematical model to be used for calculating the velocity level difference between the deck and floating floor, is described. The frequency dependence of the velocity level difference is found to be 25--40 dB/decade, depending on the ratio of the wave number and loss factor in the two plates. Laboratory measurements of velocity level differences, radiation ratios and sound reduction indices are described. The experimentally obtained results are compared with theory, and good agreement found.

  • Supplemental Notes:
    • Also available from Engineering Societies Library.
  • Corporate Authors:

    Royal Norwegian Council for Scientific & Indus Res

    Radhusgaten 8, Sentrum
    Oslo,   Norway 
  • Authors:
    • Seland, B
    • Nilsson, A C
  • Publication Date: 1977

Media Info

  • Features: References;
  • Pagination: p. 12-19
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00177104
  • Record Type: Publication
  • Source Agency: Royal Norwegian Council for Scientific & Indus Res
  • Files: TRIS
  • Created Date: Jun 28 1978 12:00AM