Experimental and frequency-domain study of acoustic damping of single-layer perforated plates
Sign Up to like & getrecommendations! Published in 2017 at "Aerospace Science and Technology"
DOI: 10.1016/j.ast.2017.07.010
Abstract: Abstract Perforated plates/liners have been widely applied in aeroengines and gas turbines to dissipate unwanted noise. In this work, numerical simulations and experimental study of acoustic damping performance of single-layer perforated plates are conducted. For… read more here.
Keywords: single layer; acoustic damping; frequency; perforated plates ... See more keywords
A review of bias flow liners for acoustic damping in gas turbine combustors
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Sound and Vibration"
DOI: 10.1016/j.jsv.2017.04.005
Abstract: The optimized design of bias flow liner is a key element for the development of low emission combustion systems in modern gas turbines and aero-engines. The research of bias flow liners has a fairly long… read more here.
Keywords: acoustic damping; flow liners; gas; bias flow ... See more keywords
Optimising the acoustic damping of multiple Helmholtz resonators attached to a thin annular duct
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Sound and Vibration"
DOI: 10.1016/j.jsv.2018.12.023
Abstract: Abstract Helmholtz resonators (HRs) are widely used to damp acoustic oscillations, including in the combustors of aero-engines and power gas turbines where they damp thermoacoustic oscillations. The geometries of such combustors are often annular in… read more here.
Keywords: helmholtz resonators; annular duct; acoustic damping; thin annular ... See more keywords
Soundproofing flexible polyurethane foams: Effect of chemical structure of chain extenders on micro-phase separation and acoustic damping
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Cellular Plastics"
DOI: 10.1177/0021955x19864387
Abstract: In this study, a new high-performance acoustic damping flexible polyurethane foam (FPUF) was successfully designed and fabricated using synthesized linear saturated aliphatic polyester resin as polyol, methylene diphenyl diisocyanate, and ethylene glycol, monoethanolamine, and ethylenediamine… read more here.
Keywords: micro phase; phase separation; chain extenders; acoustic damping ... See more keywords
Analysis and Identification of Nonlinear Acoustic Damping in Miniature Loudspeakers
Sign Up to like & getrecommendations! Published in 2021 at "Applied Sciences"
DOI: 10.3390/app11167713
Abstract: Nonlinear acoustic damping is a key nonlinearity in miniature loudspeakers when the air velocity is at a high amplitude. Measurement of nonlinear acoustic damping is beneficial for predicting and analyzing the performance of miniature loudspeakers.… read more here.
Keywords: miniature loudspeakers; nonlinear acoustic; acoustic damping; identification ... See more keywords