Acoustic characterization of ducts lined with poroelastic materials based on wave finite element method
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DOI: 10.1016/j.apacoust.2018.10.030
Abstract: Abstract A wave finite element (FE) approach is presented for investigating acoustic characteristics of an axisymmetric duct lined with poroelastic materials. A short segment of the poroelastic lined duct is modelled using commercial FE software… read more here.
Keywords: poroelastic lined; lined poroelastic; finite element; poroelastic materials ... See more keywords
Investigation of long acoustic waveguides for the very low frequency characterization of monolayer and stratified air-saturated poroelastic materials
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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
Topological design of sandwich structures filling with poroelastic materials for sound insulation
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DOI: 10.1016/j.finel.2021.103650
Abstract: Abstract The poroelastic material is often used as a sandwich core due to its lightweight and excellent sound insulation and absorption, and the research revealed that poroelastic materials with macro- or meso-holes could further improve… read more here.
Keywords: sandwich structures; poroelastic materials; topology; sound insulation ... See more keywords
Towards acoustic metafoams: The enhanced performance of a poroelastic material with local resonators
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DOI: 10.1016/j.jmps.2018.10.006
Abstract: Abstract Acoustic foams are commonly used for sound attenuation purposes. Due to their porous microstructure, they efficiently dissipate energy through the air flowing in and out of the pores at high frequencies. However, the low… read more here.
Keywords: towards acoustic; acoustic metafoams; enhanced performance; poroelastic materials ... See more keywords