Grupo de Fenómenos Ondulatorios, Departamento de Ingenieria Electrónica, Universidad Politécnica de Valencia, Camino de vera s/n, E-46022 Valencia, Spain.
J Acoust Soc Am. 2011 Mar;129(3):1173-83. doi: 10.1121/1.3531815.
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 with rubber crumb. Measurements of reflectance and transmittance by these barriers are reported. Their attenuation properties result from a combination of sound absorption by the rubber crumb and reflection by the periodic distribution of scatterers. It is concluded that the porous cylinders can be used as building blocks whose physical parameters can be optimized in order to design efficient barriers adapted to different noisy environments.
本文报道了一种基于使用回收材料（如吸声组件）制成的圆柱声子晶体的隔音屏障的系统研究。这些屏障仅由三排填充橡胶碎屑的穿孔金属壳组成。报道了这些屏障的反射率和透射率的测量结果。它们的衰减特性是由橡胶碎屑的吸声和周期性散射体分布的反射共同作用产生的。结论是，多孔圆柱可以用作构建块，其物理参数可以进行优化，以设计适应不同嘈杂环境的高效屏障。
