Design And Research On The Transparent Absorbing Structure Of Microperfrated Panel

With the development of modern industry and traffic transportation business, while the railway transportation and the traffic track are bringing the enormous social benefit and economic benefits, some environmental problems, such as the noise pollution becomes more outstanding problem.The noise pollution has already become the focus that people have been discussing, it influences people's normal work, study and living seriously and causes great danger to somebody's body and mind. So we must carry on effective control to the noise, but the absorbing structure of microperfrated panel is the effective way to noise controlling which has been developed in recent years, which has already widely used.This text consult relevant materials and understand the principle and basic theories of sound absorption and noise reduction of the absorbing structure of microperfrated panel principle at first, combines a large number of domestic and international materials and the surveying datas, and provides the designing parameter of the absorbing structure of microperfrated panel, thus which settles the solid foundation for designing of the structure later. The text detailedly analyses the main reason of sound absorption and noise reduction finally, and carry on studying the theory and experiment. Through an analysis of experimental result, that confirmes the various main factors of influencing the performance of sound absorption and puts forward the corresponding control measure at the same time.In experiment, at first we regard lucite as the experiment material and make use of the parameter datas which are designed by oneself, carry on relevant steps of punching etc. to the experiment material; then we carry on the experiment of the test of the sound absorption coefficient by the reverberation room method in the small-scale sound insulation room which is set up, it is mainly to study whether the sound absorption coefficient of the absorbing structure of clarity microperfrated panel reaches the prescriptive ruquest.The designing and the experiment validating of the absorbing structure of clarity microperfrated panel within the sound barrier that this text puts forward penetratingly, which plays a very important part in controlling the railway noise of our country.