Results 121 to 130 of about 313,410 (304)

Characteristics of developed flexible polyurethane foams reinforced with coconut coir fibres and recycled tyres [PDF]

open access: yes, 2012
Flexible Polyurethane (PU) foam is generally used in seat cushions of automotive seating for comfort and supporting the occupants. However, due to the demand for more comfortable compartment; seat cushions are now designed for better riding comfort
Chan, Wen Shan
core  

Advanced Technologies for Characterizing and Detecting Battery Thermal Failure: A Review

open access: yesAdvanced Science, EarlyView.
Illustration of advanced characterization techniques to predict battery thermal failure. ABSTRACT Energy storage is essential in accelerating the global transition toward clean and sustainable energy across various sectors. Lithium‐ion batteries (LIBs) have become increasingly significant for energy storage due to their high energy density, low ...
Yongxiu Chen   +5 more
wiley   +1 more source

Investigating the Sound Absorption Performance of Circular and Slotted Perforated Birch (Betula platyphylla) Plywood as Interior Building Materials

open access: yesBioResources
The use of perforated plywood as an interior architectural sound-absorbing material has been increasing in popularity in Korea. This study investigated the sound absorption performance of marketed birch (Betula platyphylla) plywood with circular and ...
Eun-Suk Jang   +3 more
doaj   +2 more sources

On-demand prediction of low-frequency average sound absorption coefficient of underwater coating using machine learning

open access: yesResults in Engineering
This study proposes an underwater coating with sound absorption ability in the middle-to-low frequency range and establishes an acoustic theoretical model combining the equivalent medium theory and the transfer matrix method.
Nansha Gao   +3 more
doaj   +1 more source

Active Metamaterials with Tunable Shear Nonreciprocity and Nonlinear Dynamics

open access: yesAdvanced Science, EarlyView.
Active gear‐based mechanical metamaterials enable simultaneous control of translational and torsional stiffnesses by 30–100×, break shear reciprocity under positive versus negative loads, broadly tune resonant frequencies, and offer programmable dynamic responses.
Xin Fang, Miao Yu, Dianlong Yu, Li Cheng
wiley   +1 more source

Preparation and sound absorption performance of low‐carbon fly ash cenosphere plates

open access: yesInternational Journal of Ceramic Engineering & Science
A series of low‐carbon fly ash cenosphere plates was prepared using solid waste based cementitious material as binder through a simple process; meanwhile, effects of cenosphere's particle size and size distribution on microstructure and properties were ...
Yongli Yi   +5 more
doaj   +1 more source

Modeling and investigation of a multi-resonant metamaterial sound insulator

open access: yesArchives of Acoustics
A design of multi-resonant acoustic metamaterial sound insulator is proposed to attenuate multi-tonal and broadband noise. The unit cell of the metamaterial consists of a porous material with four, nine, and sixteen embedded Helmholtz resonators and its
Zacharie Laly   +3 more
doaj   +1 more source

A theoretical approach to sound propagation and radiation for ducts with suppressors [PDF]

open access: yes
The several phenomena involved in theoretical prediction of the far-field sound radiation attenuation from an acoustically lined duct were studied. These include absorption by the suppressor, termination reflections, and far-field radiation.
Rice, E. J., Sawdy, D. T.
core   +1 more source

Sono‐Mechanogenetics: Linking Ultrasound Physics With Cellular Mechanobiology

open access: yesAdvanced Science, EarlyView.
Sono‐mechanogenetics links ultrasound physics with cellular mechanotransduction to enable noninvasive control of engineered biological systems. Acoustic forces generate distinct deformation modes that activate intracellular signaling pathways, which can be coupled to synthetic gene circuits to regulate diverse cellular functions, including gene ...
Yunjia Qu   +4 more
wiley   +1 more source

In situ assessment of the normal incidence sound absorption coefficient of asphalt mixtures with a new impedance tube [PDF]

open access: yes, 2010
Normal incidence sound absorption coefficient of materials is usually calculated with the use of an impedance tube following the ISO 10534-2 international standard.
Freitas, Elisabete F.   +3 more
core  

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