Infrasound pressure levels in vehicles
Source: International Journal of Vehicle Design, Volume 37, Number 1, 3 February 2005 , pp. 99-111(13)
Publisher: Inderscience Publishers
Abstract:This article presents the results of experimental investigations regarding infrasound pressure levels in commercial vehicles and passenger cars under differentiated conditions. The investigations come from measurements effected in specific conditions as follows: speed variation, cabin shape, windows and solar roof closed, totally and partially opened. Under the action of wind attack, the passenger compartment behaves sometimes like a cavity called Helmholtz resonator. The windows, the solar roof apertures and the volume are important parameters in this research. The infrasound levels as well the spectrum profiles are analysed under different conditions, and the results coming from passenger cars and commercial vehicles are compared. The time exposition is associated to the levels and some aspects concerning comfort and injury are discussed.
Document Type: Research Article
Affiliations: 1: DaimlerChrysler do Brasil Ltda, Development Center - DT/TAS/TVC, Av. Alfred Jurzykowski, 562 - 09680-900 Sao Bernardo do Campo, SP - Brazil and Instituto de Fisica da Universidade de Sao Paulo, Caixa Postal 66318, 05315-970 Sao Paulo, SP - Brazil. 2: Embraer - Empresa Brasileira de Aeronautica S.A., Av. Brig. Faria Lima, 2170 - 12227-901 - S.J. Campos SP - Brazil
Publication date: February 3, 2005