Results 91 to 100 of about 2,739,977 (397)

Fiber Weight Fraction Effect to Acoustic Properties of RHDPE Cantula Composite

open access: yesMekanika, 2017
In this study, composites made from recycled HDPE and Cantula fiber have been done and the absorption coefficient have been measured. Composites rHDPE-Cantula were made using hot press for approximately 60 minutes with 170oC temperature while pressure ...
Muhammad Taufik Burhany Hendrowarsito   +2 more
doaj   +1 more source

Sound attenuation in the superconducting amorphous alloy ZrTiCuNiBe [PDF]

open access: yes, 1999
The superconducting energy gap and the parameter of the intensity of electron scattering at two-level systems in amorphous ZrTiCuNiBe are determined from the results of measurements of sound attenuation.
A. L. Gaiduk   +8 more
core   +2 more sources

Ionic Conductive Textiles for Wearable Technology

open access: yesAdvanced Materials, EarlyView.
Recent advances in ionic conductive textiles for wearable technology are summarized, with a focus on soft ionic conductors that exhibit skin‐like flexibility and tissue‐like ion dynamics. Their structures, key characteristics, manufacturing methods, and diverse applications are reviewed.
Lingtao Fang, Yunlu Zhou, Qiyao Huang
wiley   +1 more source

Improvement of the sound absorption performance of jute felt-based sound absorbers using micro-perforated panels

open access: yesJournal of Low Frequency Noise, Vibration and Active Control, 2017
In industrial and architectural applications, noise can be controlled using sound-absorbing materials. Natural materials are now gaining importance in the noise control engineering as they have advantages like low cost, eco-friendly, easy to produce, etc.
Pritesh V Bansod   +2 more
doaj   +1 more source

Unperceivable Designs of Wearable Electronics

open access: yesAdvanced Materials, EarlyView.
Unperceivable wearable technologies seamlessly integrate into everyone's daily life, for healthcare and Internet‐of‐Things applications. By remaining completely unnoticed both visually and tactilely, by the user and others, they ensure medical privacy and allow natural social interactions.
Yijun Liu   +2 more
wiley   +1 more source

Influences of Compression Ratios on Sound Absorption Performance of Porous Nickel–Iron Alloy

open access: yesMetals, 2018
The improvement of sound absorption performance of porous metal is a focus of research in the field of noise reduction. Influences of compression ratios on sound absorption performance of a porous nickel–iron (Ni–Fe) alloy were investigated.
Panfeng Bai   +5 more
doaj   +1 more source

The contribution of molecular relaxation in nitrogen to the absorption of sound in the atmosphere [PDF]

open access: yes
Results and statistical analysis are presented for sound absorption in N2-H2O binary mixtures at room temperature. Experimental procedure, temperature effects, and preliminary results are presented for sound absorption in N2-H2O binary mixtures at ...
Meredith, R. W., Zuckerwar, A. J.
core   +1 more source

Bioinspired Adaptive Sensors: A Review on Current Developments in Theory and Application

open access: yesAdvanced Materials, EarlyView.
This review comprehensively summarizes the recent progress in the design and fabrication of sensory‐adaptation‐inspired devices and highlights their valuable applications in electronic skin, wearable electronics, and machine vision. The existing challenges and future directions are addressed in aspects such as device performance optimization ...
Guodong Gong   +12 more
wiley   +1 more source

Study on the sound absorption characteristics and noise reduction mechanism of coconut-shell-activated carbon particles and coconut fiber composite biomass sound-absorption materials

open access: yesMaterials Research Express
Sound-absorbing materials are widely used in the field of automotive industry. Biomass materials are abundant in the nature, some of which have natural sound absorption and noise reduction properties.
Zhenhua Hou   +4 more
doaj   +1 more source

Application Progress of Resonance Sound Absorption Structure in Aero Engines

open access: yesHangkong gongcheng jinzhan, 2019
Resonance sound absorption structure is a sandwich structure composed of perforated panel, honeycomb and rigid backplane. This structure is widely used in aircraft engine nacelle and has achieved good noise reduction effect.
Ji Shuangying, Hao Wei, Liu Jie
doaj   +1 more source

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