STUDY OF EFFECTIVE APPLICATION OF SOUNDPROOFING MATERIALS THROUGH LOW NOISE PROTOTYPE CAR DEVELOPMENT

An experimental study of an effective interior noise reduction method was executed through the construction of a low noise prototype car which mainly involved applying noise insulation materials to the Gemini diesel as a base car. The process employed and the results obtained are described in the following sections-(1) investigation on base car and determination of prototype car target. The most efficient noise insulation measures were sought taking the results of body acoustic and vibration characteristics measurements into consideration. It was found that the application laying importance on the most contributive panel area, full covering to seal split of bare panel, and choice of insulation materials were important for obtaining effective noise reduction. At least 3 dB(A) interior noise reduction was targeted; (2) construction and evaluation of low noise prototype car. One piece formed type insulation materials having appropriate frequency characteristics were applied with the tight sealing of panel joint split. An interior noise reduction of 4-6 dB(A) was achieved consequently: (3) improvement in vibration transmission routes and noise source. After the amount of vibration damper was reduced through the improvement in mounting rubber characteristics being intended to reduce solid borne noise and also sound insulation was reduced by lowering source noise levels, 38 kg mass reduction was achieved. (TRRL)

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/14775360
• Corporate Authors:

  Inderscience Enterprises Limited

  World Trade Center Building, 110 Avenue Louis Casai
  Geneva,   Switzerland 
• Authors:
  • KITAHARA, T
  • Terada, I
  • WATANABE, T
• Publication Date: 1984-7

Media Info

• Features: Figures; Photos; References;
• Pagination: p. 490-504
• Serial:
  • International Journal of Vehicle Design
  • Volume: 5
  • Issue Number: 4
  • Publisher: Inderscience Enterprises Limited
  • ISSN: 1477-5360
  • Serial URL: http://www.inderscience.com/jhome.php?jcode=IJVD

Subject/Index Terms

• TRT Terms: Automobiles; Damping (Engineering); Damping (Physics); Diesel engines; Electric insulating materials; Insulating materials; Methodology; Motor vehicle bodies; Noise control; Prototypes; Sound; Sound level; Tests; Vehicle compartments; Vehicle interiors
• Uncontrolled Terms: Decreases; Interior; Noise reduction
• ITRD Terms: 1356: Body (car); 1243: Car; 9009: Decrease; 1314: Diesel engine; 1377: Interior (veh); 9102: Method; 9109: Prototype; 6748: Sound; 6747: Sound level; 6255: Test
• Subject Areas: Bridges and other structures; Highways; Vehicles and Equipment; I91: Vehicle Design and Safety;

Filing Info

• Accession Number: 00393912
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• Report/Paper Numbers: HS-037 729
• Files: HSL, ITRD, TRIS
• Created Date: May 31 1985 12:00AM