Experiment and analysis on sound absorption characteristics of metal rubber

According to the established sound absorption model of metal rubber (MR), the measurement and research for the coefficient and acoustic impedance of MR, which is of different parameters, were carried. The influencing laws of MR's structural parameters (such as wire diameter, thickness, porosity, cavity size and so on) on its sound absorption characteristics were investigated. With the comparative analysis between the experimental results and the calculated ones from the theoretical model, the acoustic model was proved accurate. It not only provides experiment method for the further engineering application of MR in the field of noise reduction, but also set up a basis for the theory improvement.