Overcoming challenges / Ray Helferty in ADHESIVES & SEALANTS INDUSTRY (ASI), Vol. 19, N° 2 (02/2012)  

[article]  inADHESIVES & SEALANTS INDUSTRY (ASI) > Vol. 19, N° 2 (02/2012) . - p. 31-34 Titre : Overcoming challenges : A variety of cavity baffle designs exists for water management within auto body pillar structures Type de document : texte imprimé Auteurs : Ray Helferty, Auteur ; Omar Walid, Auteur ; Philip Weber, Auteur Année de publication : 2012 Article en page(s) : p. 31-34 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Automobiles -- Matériaux Isolation acoustique Joints d'étanchéité Index. décimale : 668.3 Adhésifs et produits semblables Résumé : Expandable cavity sealers have become a critical component of the overall acoustic package that has contributed to the documented noise reduction in passenger car applications over the past 20 years. Solutions encompass a variety of technologies, some of which are highly engineered parts and assemblies. As the market for smaller and more fuel-efficient vehicles expands, design architectures of the vehicle platforms are evolving to include body designs with smaller spaces between adjacent layers of sheet metal. As this space, or cavity, between adjacent layers of sheet metal shrinks, the complexity of components that must be integrated into the space increases. Sophisticated arrays of airbags, corresponding wire harnesses, and water management tools are now standard requirements in the design process. To manage the complexity of these lightweight, fuel-efficient vehicle architectures, new engineering design solutions are required to meet ever-increasing and stringent acoustic requirements. The supply base of acoustic products to the OEMs has also matured, creating a very competitive environment, both regionally and globally. Design solutions that go beyond the basic functionality of a cavity filler are becoming more common. In one recent example, a design challenge presented by an OEM required improved visibility for the driver. Here, the hardware to direct water drainage is moved from outside the windshield pillar cavity body metal to inside the cavity metal. A new cavity filler solution is conceptualized to manage this unique packaging and acoustic performance need. Although it is in its infancy, the innovative solution, along with other means of water management, have been measured for insertion loss, compared and presented. Note de contenu : - 1. Evolution of the acoustic baffle - 2. Acoustic drain and flap assembly baffle - 3. Acoustic performance comparison En ligne : http://www.adhesivesmag.com/articles/90579-overcoming-challenges Format de la ressource électronique : Web Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=19158 [article]

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