A NEW, BROADBAND SOUND ABSORBER

This paper describes a practical new sound absorber that is neither porous nor fibrous yet has acoustic performance comparable with conventional materials. Designated NFA-1 (Non-Fibrous Absorber-1) the new absorber is constructed to absorb sound by virtue of its geometry rather than the nature of the materials used which may be carbon steel, stainless steel, aluminium, plastic, ceramics, paper etc. NFA has a high thermal conductivity and can be used in areas where environmental contamination and/or elevated temperatures would preclude the use of conventional porous or fibrous sound absorbers. Order from: BSRA as No. 48,450.

• Supplemental Notes:
  • Proceedings of "Internoise 76", Washington, April 5-7, 1976.
• Corporate Authors:

  International Inst of Noise Control Engineering

  8332 Zurich-Ruschikn,   Switzerland 
• Authors:
  • Warnaka, G E
  • Wonch, N D
  • Zalas, J M
• Publication Date: 1976

Media Info

• Pagination: 6 p.

Subject/Index Terms

• TRT Terms: Noise control; Sound absorption; Sound insulating materials
• Uncontrolled Terms: Noise reduction
• Subject Areas: Environment; Marine Transportation;

Filing Info

• Accession Number: 00178309
• Record Type: Publication
• Source Agency: British Ship Research Association
• Report/Paper Numbers: Proceeding
• Files: TRIS
• Created Date: Jul 19 1978 12:00AM