Bratu, MihaiMihaiBratu2017-04-042017-04-0420112012http://hdl.handle.net/123456789/696Program NUCLEU PN 09-13 01 04There has been research on mathematical modeling of acoustic intensity emitted by industrial sources, obtaining new materials with properties that will be used as sound-absorbing barriers attenuators for sound waves. They conducted research on mitigating noise from a source that emits sound in the frequency band between 250 Hz and 8000 Hz. Noise barrier is used as a sample of composite material made of polyester resin reinforced with rubber powder. According to the graphs, there is a significant reduction of noise, resulting in the fact that this type of composite material is a good muffler; resulting in less sound pressure level due to sound-absorbing properties of the new type of composite material and compliance with the limits of law; computer simulation program and drawing paper confirms a material obtained acoustic barriers to achieve soundproofing and noise reduction in industrial areas.en-USNoise pollutionMathematical modelingComposite materialsProject