Investigation of long acoustic waveguides for the very low frequency characterization of monolayer and stratified air-saturated poroelastic materials
Sign Up to like & getrecommendations! Published in 2021 at "Applied Acoustics"
DOI: 10.1016/j.apacoust.2021.108200
Abstract: Abstract When sound propagates in a porous medium, it is attenuated via several energy loss mechanisms which are switched on or off as the excitation frequency varies. The classical way of measuring acoustic energy loss… read more here.
Keywords: low frequency; frequency; air; long acoustic ... See more keywords
Acoustic Su-Schrieffer-Heeger lattice: Direct mapping of acoustic waveguides to the Su-Schrieffer-Heeger model
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DOI: 10.1103/physrevb.103.224309
Abstract: Topological physics strongly relies on prototypical lattice model with particular symmetries. We report here on a theoretical and experimental work on acoustic waveguides that is directly mapped to the one-dimensional Su-Schrieffer-Heeger chiral model. Starting from… read more here.
Keywords: lattice; model; schrieffer heeger; acoustic waveguides ... See more keywords
Soft Acoustic Waveguides for Strain, Deformation, Localization, and Twist Measurements
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DOI: 10.1109/jsen.2020.3013067
Abstract: A novel type of soft tactile sensor based on polymeric acoustic waveguides is proposed. Ceramic multi-layer piezoelectric transducers generate ultrasonic acoustic wave packets (980kHz) that propagate and can be attenuated, delayed and reflected based on… read more here.
Keywords: strain deformation; deformation; acoustic waveguides; localization twist ... See more keywords