[ES] Los niveles de presión acústica experimentados por las naves espaciales y las lanzaderas durante las fases iniciales del lanzamiento (ignición de motores y despegue) pueden ser muy significativos para estructuras ...

Polyurethane foam waste is one of the residues of the manufacturing processes in textile industry, the disposal of which is becoming a severe environmental problem. In this paper the sound absorption properties of different ...

[EN] In recent years, natural materials are becoming a valid alternative to traditional sound absorbers due to reduced production costs and environmental protection. This paper reports the acoustical characterization of ...

[EN] The present study is conducted to characterize multilayer acoustic panels made from recycled tire rubbers (GTR’s) in order to determine the sound absorption characteristics of these new materials for different ...

A systematic study of noise barriers based on sonic crystals made of cylinders that use recycled materials like absorbing component is reported here. The barriers consist of only three rows of perforated metal shells filled ...

In the building acoustics field usually fibrous materials are used as sound absorbing materials. Nowadays polyester fiber is one of the most used but the pure chip of polyester has a problem. Polyester is obtained of ...

[EN] Recyclable cellulose loose-fill insulation has been commonly used in heavy timber construction for treating attic areas, under floors, and wall cavities. Through the kraft process, the unbleached cellulose adopts a ...