The use of slow waves to design simple sound absorbing materials

@article{Groby2015TheUO,
  title={The use of slow waves to design simple sound absorbing materials},
  author={J. Groby and W. Huang and A. Lardeau and Y. Aur{\'e}gan},
  journal={Journal of Applied Physics},
  year={2015},
  volume={117},
  pages={124903}
}
We demonstrate that the phenomenon of slow sound propagation associated with its inherent dissipation (dispersion + attenuation) can be efficiently used to design sound absorbing metamaterials. The dispersion relation of the wave propagating in narrow waveguides on one side of which quarter-wavelength resonators are plugged with a square lattice, whose periodicity is smaller than the wavelength, is analyzed. The thermal and viscous losses are accounted for in the modeling. We show that this… Expand
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