Noise generated during tire/road interaction has significant impact on the acoustic comfort of a vehicle. One of the most common approaches to attenuate road noise levels consists on the addition of mass treatments to the vehicle panels. However, the acoustic performance of sealing elements is also relevant and has an important contribution to the noise transmission into the vehicle interior.In this paper the correct balance between the mass added to treat vehicle panels and sealing content is investigated. The procedure to quantify the critical road noise transmission paths consists of recording interior noise levels as applied treatment is removed from potential weak areas, such as wheelhouses, floor, doors and body pillars. It is observed that the noise propagation through body pillars has a direct influence on road noise levels. In this case, the use of acoustic sealers placed in the body pillar sections can reduce noise transmission particularly at high frequencies leading to the achievement of desired vehicle acoustic comfort levels.
Control of Airborne Road Noise Using Sealers
Sae Technical Papers
SAE Brasil 2010 Congress and Exhibit ; 2010
06.10.2010
Aufsatz (Konferenz)
Englisch
Control of Airborne Road Noise Using Sealers
British Library Conference Proceedings | 2008
|Airborne road noise source definition
Kraftfahrwesen | 1998
|Airborne road noise source definition
British Library Conference Proceedings | 1998
|Automotive Cements And Sealers
SAE Technical Papers | 1947
|Automotive and aircraft sealers
Engineering Index Backfile | 1951