Abstract The results of experimental studies of propagation of elastic bending waves in a metamaterial element are presented; the element is a wedge whose thickness varies by the parabolic law. The specimen is prepared by 3D printing from ABS polymer. The experimental setup for generation and recording of elastic bending waves in the fabricated wedge specimen is described. Elastic waves in the wedge are recorded and imaged by a laser scanning vibrometer. The peculiarities of bending wave propagation parallel and perpendicular to the edge of the fabricated wedge specimen are experimentally investigated. The experimental results are analyzed. The performed studies show that the wedge prepared in this study is a waveguide concentrating the acoustic wave energy, which is important in developing acoustic metamaterials and absorbing devices working under the principle of an acoustic black hole.
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