Results 11 to 20 of about 2,523,561 (213)

Graded Minimal Surface Structures with High Specific Strength for Broadband Sound Absorption Produced by Laser Powder Bed Fusion

open access: yesCoatings, 2023
In this research, a design method for triply periodic minimal surface (TPMS) structures with a high specific strength for broadband sound absorption is proposed.
Mingkang Zhang   +5 more
semanticscholar   +1 more source

ACOUSTICAL PROPERTIES OF WOOD IN 2000, 4000 AND 8000 IN HERTZ FERQUENCIES [PDF]

open access: yesتحقیقات علوم چوب و کاغذ ایران, 2001
In this research solid wood properties of sound absorption coefficient in over frequency were investigated. Sound absorption at 2000, 4000 and 8000 in Hertz Frequencies was measured on the influence of effective factors in solid wood. Solid wood variable
Amir Nourbakhsh   +3 more
doaj   +1 more source

Deformation Dependent Sound Absorption Property of a Novel Magnetorheological Membrane Sound Absorber

open access: yesFrontiers in Materials, 2020
A novel membrane sound absorber based on the magnetorheological membrane (MRM) is developed for active sound absorption. Due to its good flexibility and stretch-ability, the MRM consisting of carbonyl iron particles (CIPs) and polydimethylsiloxane ...
Chuanlin Sun   +4 more
doaj   +1 more source

A Semi-Empirical Model for Sound Absorption by Perforated Plate Covered Open Cell Foam and Improvements from Optimising the Perforated Plate Parameters

open access: yesApplied Sciences, 2022
Composite structures can be designed with specific parameters for efficient sound absorption in specific frequency bands; however, determining the optimal parameters and topology to maximize sound absorption is a computationally challenging task. In this
Junzhe Zhang   +3 more
doaj   +1 more source

A Study on the Sound Absorption Properties of Mycelium-Based Composites Cultivated on Waste Paper-Based Substrates

open access: yesBiomimetics, 2022
Mycelium-based composites have the potential to replace petrochemical-based materials within architectural systems and can propose biodegradable alternatives to synthetic sound absorbing materials. Sound absorbing materials help improve acoustic comfort,
N. Walter, Benay Gürsoy
semanticscholar   +1 more source

Low-frequency sound absorption performance of composite acoustic metamaterials with rotational labyrinth channels and micro-perforated panels [PDF]

open access: yesAIP Advances
In this paper, a kind of novel acoustic metamaterial combined with a rotational labyrinth and a micro-perforated plate is designed. The design of the rotational labyrinth structure combined with micro-perforated plates endows the acoustic metamaterial ...
Xinxin Liu   +4 more
doaj   +1 more source

Less Is More: Hollow-Truss Microlattice Metamaterials with Dual Sound Dissipation Mechanisms and Enhanced Broadband Sound Absorption.

open access: yesSmall, 2022
Being a lightweight material with high design freedoms, there are increasing research interests in microlattice metamaterials as sound absorbers. However, thus far, microlattices are limited to one sound dissipation mechanism, and this inhibits their ...
Xinwei Li, Xiang Yu, Wei Zhai
semanticscholar   +1 more source

Investigation of the sound absorption properties of gypsum particleboard produced with kenaf stalks and nano clay [PDF]

open access: yesتحقیقات علوم چوب و کاغذ ایران, 2014
In this study sound absorption coefficient and hardness of gypsum particleboard produced with kenaf stalk and nano clay were investigated. Variables in this study were weight ratio of kenaf stalks to poplar wood in three levels (40, 50 and 60 %) and nano
Hossein Rangavar, Mohammad hassan Payan
doaj   +1 more source

Multi‐Level Bioinspired Microlattice with Broadband Sound‐Absorption Capabilities and Deformation‐Tolerant Compressive Response

open access: yesAdvanced Functional Materials, 2022
Owing to the omnipresent noise and crash hazards, multifunctional sound‐absorbing, and deformation‐tolerant materials are highly sought‐after for practical engineering design. However, challenges lie with designing such a material. Herein, leveraging the
Xinwei Li   +5 more
semanticscholar   +1 more source

Sound absorption performance of micro-perforated plate sandwich structure based on triply periodic minimal surface

open access: yesJournal of Materials Research and Technology, 2023
The sandwich structure based on Triply periodic minimal surface (TPMS) is a lightweight and high-strength multifunctional composite material that combines the versatility of heat exchange, impact resistance, and energy absorption, and has been widely ...
Pengfei Zhang   +8 more
doaj   +1 more source

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