Abstract
Acoustical materials are widely used by noise control engineers for NVH (Noise Vibration and Harshness) reduction. However, in order to effectively select and apply these materials which are commercially available in various types, the acoustical properties of these materials need to be known. Well established standards exist for the determination of such properties. In this paper we describe the details of two experimental rigs developed in house at IIT, Kharagpur based on available standards for the determination of the normal sound absorption co-efficient and the transmission loss of the sound absorbing materials and the sound barrier materials, respectively. Results from sample measurements are also provided. Some of the materials discussed in this paper are widely used in the automobile industry for NVH reduction in automobiles as well.
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© 2002 Springer Science+Business Media Dordrecht
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Mohanty, A.R. (2002). Acoustical Materials for Automotive NVH Reduction. In: Munjal, M.L. (eds) IUTAM Symposium on Designing for Quietness. Solid Mechanics and Its Applications, vol 102. Springer, Dordrecht. https://doi.org/10.1007/978-94-017-0095-5_2
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DOI: https://doi.org/10.1007/978-94-017-0095-5_2
Publisher Name: Springer, Dordrecht
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