Infrasound pressure levels in vehicles
by H. Onusic, V.S. Mizutani
International Journal of Vehicle Design (IJVD), Vol. 37, No. 1, 2005

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.

Online publication date: Thu, 03-Feb-2005

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