Results 101 to 110 of about 118,824 (293)

Mathematical Model for Estimating the Sound Absorption Coefficient in Grid Network Structures. [PDF]

Materials (Basel), 2023
Satoh T, Sakamoto S, Isobe T, Iizuka K, Tasaki K.   +4 more
europepmc   +1 more source

Active Metamaterials with Tunable Shear Nonreciprocity and Nonlinear Dynamics

Advanced 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

Theoretical and experimental investigation on the sound absorption performance of ultra-thin curled acoustic metasurface

Journal of Low Frequency Noise, Vibration and Active Control
A simplified model of the absorption coefficient of traditional Helmholtz resonators (THR) was established, and the influence of different geometric parameters on the absorption coefficient of THR was analyzed.
Baozhu Cheng, Jiesen Zhang, Yang Liu, Jiaqi Sun, Bin Li, Hong Hou   +5 more
doaj   +1 more source

Basic Study for Acoustic Absorption Characteristics of Soft and Light Granular Material (Basic Characteristics for Expanded Polystyrene Beads)

Journal of Advanced Mechanical Design, Systems, and Manufacturing, 2013
In this paper fundamental sound absorption characteristics of expanded polystyrene beads with several geometries are reported when they are packed in some thick layers with and without back air space.
Shuichi SAKAMOTO, Masaru SASAKI, Itaru KOURAKATA, Kensaku YANAGIMOTO, Seiji WATANABE   +4 more
doaj   +1 more source

Theoretical and Experimental Analyses on the Sound Absorption Coefficient of Rice and Buckwheat Husks Based on Micro-CT Scan Data. [PDF]

Materials (Basel), 2023
Sakamoto S, Toda K, Seino S, Hoshiyama K, Satoh T.   +4 more
europepmc   +1 more source

Shadow‐Calibrated Stereo Vision for Colorimetric Sweat Analysis

Advanced Science, EarlyView.
By establishing a mathematical model that reconstructs 3D structures through geometric features of object shadows under controlled illumination, and combining it with Convolutional Neural Network‐based 2D image analysis for volumetric calibration, this work enables highly accurate 3D morphological reconstruction.
Ting Xiao, Yuwen Yan, Miaorong Lin, Jiahui Chen, Jianxin Meng, Xiang Cui, Peng Zhang, Fengyu Li   +7 more
wiley   +1 more source

Optimized design and experimental validation of sound absorption coefficient performance in aluminium metal foam by spark plasma sintering. [PDF]

Heliyon, 2023
Jafari MJ, Madvari RF, Ebadzadeh T.
europepmc   +1 more source

Multidimensional and Multifunctional Laser‐Induced Graphene (LIG) for Point‐of‐Care and Wearable Biosensing, Theranostics, and Bioactive Interfaces Toward Personalized Healthcare and Regenerative Medicine

Advanced Science, EarlyView.
Multidimensional laser‐induced graphene (LIG) spanning from 0D to 3D architectures is comprehensively reviewed for multifunctional biomedical platforms, including biosensing, theranostics, and bioactive interface applications, which highlights its potentials for point‐of‐care diagnostics, wearable health monitoring, smart drug delivery, and tissue ...
Li Zhang, Yurou Yuan, Xiaohong Ding, Wing Cheung Mak   +3 more
wiley   +1 more source

A new simple method for determining the sound absorption coefficient

MATEC Web of Conferences, 2018
Taking into account the influence of the length and diameter of the impedance tube on the process of decay of sound waves, a new study of sound propagation in an impedance tube is presented, on the basis of which it is easier to determine the sound ...
Chelidze Merab
doaj   +1 more source

Optimization of the Sound Absorption Coefficient (SAC) from Cellulose-Silica Aerogel Using the Box-Behnken Design. [PDF]

ACS Omega, 2022
Silviana S, Prastiti EC, Hermawan F, Setyawan A.   +3 more
europepmc   +1 more source