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Acoustic transmission loss in Hilbert fractal metamaterials. [PDF]
Sci Rep, 2023 AbstractAcoustic metamaterials are increasingly being considered as a viable technology for sound insulation. Fractal patterns constitute a potentially groundbreaking architecture for acoustic metamaterials. We describe in this work the behaviour of the transmission loss of Hilbert fractal metamaterials used for sound control purposes. The transmission
Comandini G +3 more
europepmc +6 more sources
Heat transfer and simulated coronary circulation system optimization algorithms for real power loss reduction [PDF]
Журнал інженерних наук, 2021 In this paper, the heat transfer optimization (HTO) algorithm and simulated coronary circulation system (SCCS) optimization algorithm has been designed for Real power loss reduction.
Kanagasabai L.
doaj +1 more source
FCC algorithm for power loss diminution [PDF]
Журнал інженерних наук, 2021 In this work, the FCC algorithm has been applied to the power problem. Real power loss reduction, voltage deviation minimization, and voltage stability enhancement are the key objectives of the proposed work.
Kanagasabai L.
doaj +1 more source
A comparison between hybrid method technique and transfer matrix method for design optimization of vehicle muffler [PDF]
FME Transactions, 2021 Hybrid mufflers are now commonly equipped to decrease vehicle noise and are a crucial tool for regulation of the acoustic system. In order to ensure optimum engine efficiency, the system is intended to dump the strength of the acoustic pulses generated ...
Mohamad Barhm +3 more
doaj +1 more source
Evaluation of the Effect of Uncertainties on the Acoustic Behavior of a Porous Material Located in a Duct Element Using the Monte Carlo Method [PDF]
Archives of Acoustics, 2023 When studying porous materials, most acoustical and geometrical parameters can be affected by the presence of uncertainties, which can reduce the robustness of models and techniques using these parameters. Hence, there is a need to evaluate the effect of
Hanen Hannachi +5 more
doaj +1 more source
Amplified black hole algorithm for real power loss reduction [PDF]
International Journal of Research in Industrial Engineering, 2020 This work presents Amplified Black Hole Algorithm (ABHA) for solving optimal reactive power problem. In the projected approach ABHA, Gravitational Search Algorithm (GSA) is merged with Black Hole Algorithm (BHA). Power loss reduction is the key objective
L. Kanagasabai
doaj +1 more source
Analysis of Composite Scrubber with Built-In Silencer for Marine Engines
Journal of Marine Science and Engineering, 2021 The International Maritime Organization (IMO) is strengthening regulations on reducing sulfur oxide emissions, and the demand for reducing exhaust noise affecting the environment of ships is also increasing.
Myeong-rok Ryu, Kweonha Park
doaj +1 more source
Archives of Acoustics, 2021 This paper describes boundary element method (BEM), experimental and optimization studies conducted to understand the potential of expansion tube coupled micro-perforated cylindrical panel (MPCP) to enhance the acoustic attenuation for in-duct noise ...
Mohamad Izudin ALISAH +4 more
doaj +1 more source
Tailoring Plate Thickness of a Helmholtz Resonator for Improved Sound Attenuation [PDF]
, 2016 A Helmholtz resonator with flexible plate attenuates noise in exhaust ducts, and the transmission loss function quantifies the amount of filtered noise at a desired frequency.
Duncan, Scott, Nudehi, Shahin
core +2 more sources
Transmission losses in left-handed materials [PDF]
Physical Review E, 2002 We numerically analyze the origin of the transmission losses in left-handed structures. Our data confirms that left handed structures can have very good transmission properties, in spite of the expectable dispersion of their effective permeability and refraction index. The large permittivity of the metallic components improves the transmission.
markos, P. +2 more
openaire +3 more sources