Özet:

In this study, the parametric models of the acoustic sweating ratio for isolation materials that will reduce the noise level in closed spaces and vehicle cabins have been developed.  First of all, the mathematical models of the acoustic absorption ratio previously developed by others for sponge materials have been reviewed for this study and are suitable for porosity, flow resistance, etc. on synthetic porous materials. It is rearranged according to the variables.  In mathematical models, linear and one-dimensional wave transmission is based on the absorption rate calculated from the acoustic empedany, and these conditions have been considered necessary in terms of compliance with the subsequent experimental requirements. Later again, the double microphone empedance tube developed within the framework of this study, using the FFT analysis device and the computer experimentally made in one-dimensional linear wave transmission measurements for the above materials.

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