Results 11 to 20 of about 625,137 (266)

Acoustic transmission loss in Hilbert fractal metamaterials. [PDF]

open access: yesSci 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]

open access: yesЖурнал 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]

open access: yesЖурнал 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]

open access: yesFME 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]

open access: yesArchives 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]

open access: yesInternational 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

open access: yesJournal 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

Acoustic Attenuation Performance Analysis and Optimisation of Expansion Chamber Coupled Micro-perforated Cylindrical Panel Using Response Surface Method

open access: yesArchives 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

Investigating the reliable acoustic path properties in a global scale

open access: yesFrontiers in Marine Science, 2023
Leveraging the benefits of low transmission loss and high signal-to-noise ratio, the reliable acoustic path (RAP) has been extensively employed in various underwater applications. In this study, we investigate RAP properties on a global scale.
Ying Liu, Cheng Chen, Xiao Feng
doaj   +1 more source

Real power loss reduction by Acridoidea stirred artificial bee colony algorithm [PDF]

open access: yesInternational Journal of Research in Industrial Engineering, 2020
Acridoidea Stirred Artificial Bee Colony (ASA) Algorithm is applied to solve the power loss reduction problem. In the projected algorithm natural Acridoidea jumping phenomenon has been imitated and the modeled design has been intermingled with artificial
L. Kanagasabai
doaj   +1 more source

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