Abstract:As a noval functional material designed and prepared artificially, one-dimensional phononic crystal has a great prospect in the field of noise reduction. In this study, a novel one-dimensional phononic crystal metamaterial based on the metallic hollow spheres (MHS)/polymer matrix laminated composites was designed and prepared.The result of impedance tube test shows that the laminated composite has excellent sound insulation performance. The incident direction of sound waves has little effect on the sound insul… Show more
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