Results 101 to 110 of about 3,088,219 (346)
Influences of Compression Ratios on Sound Absorption Performance of Porous Nickel–Iron Alloy
Metals, 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
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Reviewed here is the current state of knowledge with respect to each basic mechanism of sound propagation in the atmosphere and how each mechanism changes the spectral or temporal characteristics of the sound received at a distance from the source.
Daigle, Gilles A., Embleton, Tony F. W.
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Adaptive Carbon Nanotube Patches for Versatile Electronic Textiles and Wind‐Harvesting Applications
Advanced Materials Technologies, EarlyView.An adhesion‐tunable electronic textile patch based on a carbon nanotube/paraffin composite is presented, enabling direct, adhesive‐free integration with fabrics. Pressure‐responsive bonding allows reversible or permanent attachment on demand.
Seokwon Joo +4 more
wiley +1 more source
Effects of fiber motion on the acoustic behavior of an anisotropic, flexible fibrous material [PDF]
The acoustic behavior of a flexible fibrous material was studied experimentally. The material consisted of cylindrically shaped fibers arranged in a batting with the fibers primarily aligned parallel to the face of the batting.
Dahl, Milo D. +2 more
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, 2016 A necessary condition for the validity of the linear viscoelastic model for a (passive) polymeric cylinder with an ultrasonic hysteresis-type absorption submerged in a non-viscous fluid requires that the absorption efficiency is positive (Qabs > 0 ...
Fellah, Z. E. A., Mitri, F. G.
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Modulus‐Switchable Miniature Robots for Biomedical Applications: A Review
Advanced Robotics Research, EarlyView.Materials, robot designs, proof‐of‐concept functions, and biomedical applications of modulus‐switchable miniature robots. Miniature soft robots have shown great potential in biomedical applications due to their excellent controllability and suitable mechanical properties in biological environments.
Chunyun Wei, Yibin Wang, Jiangfan Yu
wiley +1 more source
Sound Absorption Properties of Shredded Paper Wastes as Indoor Building Sound Absorber
BioResourcesThe sound absorption properties of shredded paper wastes (SPW) were evaluated. Two impedance tubes (large and small) were used to measure the sound absorption coefficient of different thicknesses of SPW sound-absorber (20, 40, 60, 80, and 100 mm). As the
Eun-Suk Jang, Hee-Jun Park
doaj
Electrospinning nanofilms to improve sound absorption of flexible or rigid porous material
Results in EngineeringTo further enhance the sound absorption capabilities of porous materials, we employed electrospinning technology to prepare electrospinning nanofilms using polyvinyl butyral solution.
Nansha Gao +5 more
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Hard‐Magnetic Soft Millirobots in Underactuated Systems
Advanced Robotics Research, EarlyView.This review provides a comprehensive overview of hard‐magnetic soft millirobots in underactuated systems. It examines key advances in structural design, physics‐informed modeling, and control strategies, while highlighting the interplay among these domains.
Qiong Wang +4 more
wiley +1 more source
Sound absorption and reflection with coupled tubes [PDF]
, 2000 This paper describes a special sound absorbing technique with an accompanying efficient numerical design tool. As a basis pressure waves in a single narrow tube or pore are considered. In such a tube the viscosity and the thermal conductivity of the air,
Eerden, Frits van der
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