Results 81 to 90 of about 3,088,219 (346)

Sound Absorption by Tree Bark

, 2019
Proceedings of the ICA 2019 and EAA Euroregio : 23rd International Congress on Acoustics, integrating 4th EAA Euroregio 2019 : 9-13 September 2019, Aachen, Germany / proceedings editor: Martin Ochmann, Michael Vorländer, Janina Fels 23rd International Congress on Acoustics, integrating 4th EAA Euroregio 2019, ICA 2019, Aachen, Germany, 9 Sep 2019 - 13 ...
Li, Mengmeng, van Renterghem, Timothy, Kang, Jian, Botteldooren, Dick   +3 more
openaire   +3 more sources

Design and Simulation Analysis of Sound Absorption Structure for Acoustic Detection-Based Underwater Gliders

水下无人系统学报
The radiation noise of mechanical noise has a significant impact on the acoustic detection performance of acoustic detection-based underwater gliders. In order to address this problem, this paper introduced sound absorption structure into the study of ...
Donghai ZENG, Xinyu WU, Chang YUAN, Yuxuan PENG, Jianxing ZHANG, Baoren LI   +5 more
doaj   +1 more source

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

Journal 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, T Sai Teja, Amiya R Mohanty   +2 more
doaj   +1 more source

PENGARUH FRAKSI BERAT SERAT TERHADAP SIFAT AKUSTIK KOMPOSIT rHDPE-CANTULA [PDF]

, 2016
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 ...
H, M. TAUFIK BURHANY.
core  

Sound Attenuation in Quark Matter Due to Pairing Fluctuations

, 2016
The sound wave in dense quark matter is subject to strong absorption due to diquark field fluctuations above T critical. The result is another facet of Mandelshtam-Leontovich slow relaxation time theory.Comment: Talk at the 19th International Seminar ...
Kerbikov, Boris
core   +2 more sources

Acoustic properties of biodegradable composite micro-perforated panel (BC-MPP) made from kenaf fibre and polylactic acid (PLA) [PDF]

, 2018
This paper investigates the sound absorption of biodegradable composite micro-perforated panel (BC-MPP) made from kenaf fibre and biodegradable polymer known as polylactic acid (PLA). BC-MPP samples were made through conventional machining method such as
Che Din, Nazli, Ong, Pauline, Vui, Desmond Daniel Sheng Chin,, Yahya, Musli Nizam   +3 more
core   +1 more source

From the Discovery of the Giant Magnetocaloric Effect to the Development of High‐Power‐Density Systems

Advanced Materials Technologies, EarlyView.
The article overviews past and current efforts on caloric materials and systems, highlighting the contributions of Ames National Laboratory to the field. Solid‐state caloric heat pumping is an innovative method that can be implemented in a wide range of cooling and heating applications.
Agata Czernuszewicz, Yaroslav Mudryk, Jun Cui, Lucas Griffith, Duane D. Johnson, Julie Slaughter   +5 more
wiley   +1 more source

Roadmap to Precision 3D Printing of Cellulose: Rheology‐Guided Formulation, Fidelity Assessment, and Application Horizons

Advanced Materials Technologies, EarlyView.
This critical review presents a comprehensive roadmap for the precision 3D printing of cellulose. Quantitative correlations link ink formulation and rheological properties to print fidelity and final material performance. This framework guides the development of advanced functional materials, from biomedical scaffolds to electromagnetic shielding ...
Majed Amini, Hadi Hosseini, Seyyed Alireza Hashemi, Mohammad Arjmand   +3 more
wiley   +1 more source

Roll‐to‐Roll Manufacturing of Flexible Thermoelectric Semiconductors Using Low‐Level Direct‐Current Sputtering

Advanced Materials Technologies, EarlyView.
Roll‐to‐roll direct‐current sputtering enables room‐temperature manufacture of flexible bismuth telluride thermoelectric films. By identifying a low‐power deposition window that suppresses charge‐induced arcing, this work links sputtering conditions to film structure, charge transport, and thermoelectric performance, achieving a room‐temperature figure
Xudong Tao, John O'Sullivan, Kening Wan, Emiliano Bilotti, Ruy Sebastian Bonilla, Hazel E. Assender   +5 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

Materials 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, Xiaoying Ma, Liai Pan, Rui Zhang, Libo Wang   +4 more
doaj   +1 more source