Results 51 to 60 of about 400,889 (304)
Advanced Materials, EarlyView.This study demonstrates a self‐assembly process to generate free‐standing piezoelectric nanomembranes, forming ultracompact microtubular acoustic wave sensors and actuators. The miniaturized 3D piezoelectric platform reported in this work can be applied in telecommunication, energy harvesting, and acoustofluidics. Moreover, the 3D self‐assembly can add
Raphaël C. L‐M. Doineau +9 more
wiley +1 more source
Journal of Advanced Mechanical Design, Systems, and Manufacturing, 2015 This study estimates the sound-absorption coefficient and transmission loss for the dimensions of clearances among the close-packed cylinders by theoretical analysis and compares these estimates with experimental values.
Shuichi SAKAMOTO +4 more
doaj +1 more source
Numerical Design of Sound-Insulating Material with Combined Cavities of Mixed Sizes
Shock and Vibration, 2020 In view of the low-frequency acoustic insulation performance and poor pressure resistance of a single cavity at present, finite element software COMSOL is used to establish an analysis model to calculate the sound transmission loss (TL) and compression ...
Xu-wen Wang +5 more
doaj +1 more source
Applied Sciences, 2023 The depth of electrodes inserted into the charge plays a vital role in controlling the submerged arc furnace. Therefore, we used ultrasound waves reflected from the electrode tip to estimate the depth of electrodes inserted into the charge.
Mi Li, Jianjun He
doaj +1 more source
Experimental study on sound transmission loss of plenum windows [PDF]
The Journal of the Acoustical Society of America, 2019 To investigate the noise reduction mechanism of plenum windows, the paper experimentally studied the influence of the air-gap spacing between two glass panes, the panel thickness, and the opening size on the sound transmission loss (TL). The results show that when the half wavelength of impinged sound is smaller than the air-gap spacing, the TL can be ...
Liangfen, Du +2 more
openaire +2 more sources
The application on the usage of natural fibers as noise absorbers [PDF]
, 2013 The Heat Ventilation Air Conditioning System (HVAC) is one of the ducting systems that are commonly found to make occupants in the building comfortable by controlling the temperature and air flow.
Madlan, Mohd Amran
core +1 more source
Intelligent Acousto‐Electrical Metamaterials (IAM) for Sound Source Detection
Advanced Materials, EarlyView.Our proposed metamaterial concept enables sound source detection using a single material, in contrast to conventional arrays that require dozens or even hundreds of transducers. We show that the coupled acoustic–vibrational–electrical responses in piezoelectric metamaterials give rise to topology‐governed charge transport, producing distinct voltage ...
Victor Couëdel +7 more
wiley +1 more source
Advanced Materials, EarlyView.Metasurface‐engineered NC‐TENG arrays integrate tactile pressure mapping, non‐contact gesture sensing, and acoustic signal readouts in one ultrathin module, and outperforms pristine PDMS in terms of electrical output and real‐time spatial mapping for next‐gen wearables.
Injamamul Arief +12 more
wiley +1 more source
Determination of Caries Lesion Activity: Reflection and Roughness for Characterization of Caries Progression [PDF]
, 2018 Used by permission. © Operative Dentistry, Inc. Transmission or reproduction of protected items beyond that allowed by fair use requires the written permission of Operative Dentistry, Inc.Caries lesion progression is difficult to determine with visual ...
Ando, Masatoshi +2 more
core +1 more source
Experimental analysis on air-to-water sound transmission loss in shallow water [PDF]
MATEC Web of Conferences, 2019 Research on the propagation characteristics of air-to-water sound transmission is of great importance to the detection of aerial target from underwater. In order to study the propagation characteristics of air-to-water sound transmission in shallow water,
Peng Zhaohui +2 more
doaj +1 more source