Results 41 to 50 of about 446,260 (292)

Assessment of acoustic and thermal properties of airtight wooden windows used in Baltic and Scandinavian countries

Journal of Environmental Engineering and Landscape Management, 2019
Windows are the one of the most important elements of a building envelope. Windows with appropriate acoustic and thermal properties can guarantee comfort and protection of indoor environment.
Kęstutis Miškinis, Raimondas Bliūdžius, Vidmantas Dikavičius, Arūnas Burlingis   +3 more
doaj   +1 more source

Physical Properties and Environmental Impact of Sound Barrier Materials Based on Fly Ash Cenosphere

Buildings, 2022
Traffic noise and solid waste pollution are two major problems that restrict urban development and affect urban environments. In this study, a new kind of cement-based material for sound barriers was prepared using industrial waste fly ash cenosphere to ...
Hui Xie, Yajing Li, Ercan Kahya, Bo Wang, Xiyun Ge, Guanda Li   +5 more
doaj   +1 more source

Acoustic Properties of Wood [PDF]

The Journal of the Acoustical Society of America, 1969
A square redwood plate was progressively cut, removing crossgrain and longitudinal-grain strips, with simultaneous acoustic measurements made of strips (beams) and plate. Findings show that regions near the ends of a free beam or plate do not contribute to losses.
Yoshimasa Sakurai, Eugen J. Skudrzyk
openaire   +1 more source

Prediction of Surface Topography Parameters in Direct Laser Interference Patterning of Stainless Steel Using Infrared Monitoring and Convolutional Neural Networks

Advanced Engineering Materials, EarlyView.
This study presents an infrared monitoring approach for direct laser interference patterning (DLIP) combined with a convolutional neural network (CNN). Thermal emission data captured during structuring are used to predict surface topography parameters.
Lukas Olawsky, Marcelo Sallese, Leander Kläber, Clemens Kuhn, Keming Du, Andrés Fabián Lasagni   +5 more
wiley   +1 more source

Assessment of the Measurement and Prediction Methods for the Acoustic Properties of Natural Fiber Samples and Evaluation of Their Properties

Journal of Natural Fibers, 2022
Although some studies have been conducted to show how natural fibers can replace synthetic materials, the use of many natural fibers is still limited.
Hasan Koruk
doaj   +1 more source

Determining the Acoustic Properties of Chihuahua, Manchego, and Panela Cheeses by Applying Ultrasonic Spectroscopy

Biology and Life Sciences Forum, 2023
In this paper, a study to determine the acoustic properties of Chihuahua, Manchego, and panela cheeses is carried out by applying acoustic spectroscopy in the ultrasound spectrum.
Raúl Alberto Reyes-Villagrana, América Chávez-Martínez, Ana Luisa Rentería-Monterrubio, Juliana Juárez-Moya, Jesús Madrigal-Melchor   +4 more
doaj   +1 more source

Acoustic Properties of La3Ga5.3Ta0.5Al0.2O14 Crystal

Izvestiya Vysshikh Uchebnykh Zavedenii. Materialy Elektronnoi Tekhniki = Materials of Electronics Engineering, 2015
Development and search for new advanced materials of the lanthanum gallium silicate group with unique thermal properties is of great importance for the development of acoustoelectronics based on volume and surface acoustic waves. The processes of surface acoustic wave excitation and propagation in the La3Ga5.3Ta0.5Al0.2O14 crystal was studied using a ...
Dmitry V. Roshchupkin, Dmitry V. Irzhak, Eugeny V. Emelin, Sergei A. Sakharov, Alexey N. Zabelin   +4 more
openaire   +3 more sources

Air‐Pressure–Actuated Vibroacoustic Metamaterial With Tunable Bandgap: Design, Modeling, and Characterization

Advanced Engineering Materials, EarlyView.
This article presents the design, modeling, and characterization of air‐pressure–actuated programmable vibroacoustic metamaterials (PVAMM). The study focuses on leveraging air pressure to dynamically tune resonance frequencies for effective noise attenuation.
William Kaal, Michael M. Becker, Sarah C. L. Fischer   +2 more
wiley   +1 more source

Compressional wave dispersion due to rock matrix stiffening by clay squirt flow

Geophysical Research Letters, 2016
The standard Biot‐Gassmann theory of poroelasticity fails to explain strong compressional wave velocity dispersion experimentally observed in 12 tight siltstone with clay‐filled pores.
Jing Ba, Jianguo Zhao, José M. Carcione, Xingxing Huang   +3 more
doaj   +1 more source

A Test Method for Acoustic Emission Properties of Natural Cellulose Fiber-Reinforced Composites

Applied Sciences, 2021
To test the acoustic performance of fiber-reinforced composites for replacing wood, an acoustic vibration test method is developed. For evaluation of the test method, composites are manufactured using hemp and ramie embedded in epoxy, through vacuum ...
Fanxizi Liu, Qiang Gao, Hui Guo, Chenhong Lang, Jinhua Jiang, Yiping Qiu   +5 more
doaj   +1 more source