Results 11 to 20 of about 24,328 (215)

A State-Space Modeling Approach for Active Structural Acoustic Control

open access: yesShock and Vibration, 2009
The demands for improvement in sound quality and reduction of noise generated by vehicles are constantly increasing, as well as the penalties for space and weight of the control solutions.
Leopoldo P.R. de Oliveira   +3 more
doaj   +1 more source

Modelling vibro–acoustic response of lightweight square aluminium panel influenced by sound source locations for active control

open access: yesScientific Reports, 2022
This paper uses numerical approach to give insight into the structural–acoustic response of a lightweight square aluminium panel. It takes into consideration different locations of a primary sound source in an acoustic medium and how these locations ...
Chukwuemeke William Isaac   +3 more
doaj   +1 more source

Structural-acoustic coupling effect of a rectangular cavity comprising a windowpane and five rigid walls and its control (Experimental approach)

open access: yesNihon Kikai Gakkai ronbunshu, 2015
This paper deals with a structurally-acoustically coupled rectangular cavity comprising a flexible windowpane and five rigid walls. It is the purpose of this paper to perform active control of a windowpane with a view to enhancing its transmissibility ...
Ryoji FUKUDA, Nobuo TANAKA
doaj   +1 more source

Comparison of smart panels for tonal and broadband vibration and sound transmission active control

open access: yesInternational Journal of Smart and Nano Materials, 2020
This paper presents a comprehensive overview of the principal features of smart panels equipped with feed-forward and feedback systems for the control of the flexural response and sound transmission due respectively to tonal and to stochastic broadband ...
Paolo Gardonio   +2 more
doaj   +1 more source

Acoustic and Vibration Control for an Underwater Structure under Mechanical Excitation

open access: yesShock and Vibration, 2014
Acoustic and vibration control for an underwater structure under mechanical excitation has been investigated by using negative feedback control algorithm. The underwater structure is modeled with cylindrical shells, conical shells, and circular bulkheads,
Shi-Jian Zhu   +4 more
doaj   +1 more source

Appraising the Acoustic Performance and Related Factors of Natural Fiber: A Review

open access: yesJournal of Natural Fibers, 2022
Over the last couple of decades, there is an increasing demand to control interior noise occurring in aircraft, automobiles, railways, and construction works.
Savani Prabhune   +3 more
doaj   +1 more source

Double Panel Structure for Active Control of Noise Transmission

open access: yesArchives of Acoustics, 2018
Passive noise reduction means are commonly used to reduce noise in the industry but, unfortunately, their effectiveness is poor in the low frequency range.
Leszek MORZYŃSKI, Grzegorz SZCZEPAŃSKI
doaj   +1 more source

Air‐Pressure–Actuated Vibroacoustic Metamaterial With Tunable Bandgap: Design, Modeling, and Characterization

open access: yesAdvanced Engineering Materials, EarlyView.
This article presents the design, modeling, and characterization of air‐pressure–actuated programmable vibroacoustic metamaterials (PVAMM). The study focuses on leveraging air pressure to dynamically tune resonance frequencies for effective noise attenuation.
William Kaal   +2 more
wiley   +1 more source

Comparison of Triply Periodic Minimal Surface Energy Absorbers Under Uniaxial Compressive Loading

open access: yesAdvanced Engineering Materials, EarlyView.
This study investigates LCD 3D printed Triply Periodic Minimal Surface (TPMS) structures as mechanical energy absorbers. By comparing various base designs and layered combinations under uniaxial compression, it identifies that a Diamond‐Gyroid sandwich structure offers superior performance.
Sergej Grednev   +2 more
wiley   +1 more source

Adaptive Foam 3D Printing of Ultralight and Multifunctional Materials

open access: yesAdvanced Engineering Materials, EarlyView.
Adaptive foam 3D printing, enabled by expandable microspheres, imparts cellular structures to thermoplastic and thermosetting polymers, manufactured through a variety of processes including fused filament fabrication, direct ink writing, digital light processing, and inkjet printing.
Nariman Rajabifar, Amir Ameli
wiley   +1 more source

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