The scattering of acoustic waves propagating in porous rigid 3D stereolithographical materials that are made of resin, has been investigated. 3D stereolithographical materials were obtained using a
form of rapid prototyping that allows complex solid objects to be manufactured
directly from3D computer models in the form of successive layers of light-cured
resin. Relative variation of velocity and attenuation of 3D materials in air
filled and water filled media has been predicted at normal and oblique
directions.The scattering perturbation is similar to diffusion waves at low
frequency while dispersion velocity and attenuation change with respect to
square root of angular frequency and with respect to angular frequency at high
frequency respectively. Dr Haydar Aygun hopes to see you on-line for Inter-Noise 2020
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