Description
Elastic metamaterials enable unprecedented control over acoustic waves in solids, including periodicity-driven or subwavelength wave attenuation, waveguiding, wave focusing, negative refraction, and other interesting phenomena. The predicted dynamic properties of the metamaterials made of polymers can however be altered by the mechanical behavior of the constituent materials due to the presence of intrinsic viscous losses. Comprehensive understanding of the influence of the losses on the dynamics of polymer elastic metamaterials has not been achieved yet which makes a burden for the practical applications of these materials and complicates the prediction of their functionalities. In the first part of this talk, we discuss the influence of linear viscoelastic material behavior on wave attenuation in polymer metamaterials which are produced by conventional manufacturing techniques and reveal (non)resonance wave scattering. For this, we estimate the accuracy of commonly used mechanical models to model viscoelastic behavior of polymers in comparison with experimental data. In the second part, we consider additively manufactured meta-structures and estimate the influence of the 3D-printed microstructure and a manufacturing method on the macroscopic dynamics of several types of elastic metamaterials.| Periode | aug.-2023 |
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| Evenementstitel | 2023 IEEE International Ultrasonics Symposium, IUS 2023 |
| Evenementstype | Conference |
| Sponsoren | IEEE, IEEE Ultrasonics, Ferroelectrics, and Frequency Control Society (UFFC) |
| Locatie | Montreal, CanadaToon op kaart |
| Mate van erkenning | International |