Results 61 to 70 of about 1,545,533 (279)

Composition measurements of crude oil and process water emulsions using thick-film ultrasonic transducers

, 2006
This paper presents an experimental study to investigate the suitability of thick-film ultrasonic transducers for composition measurements in heterogeneous mixtures. Following on from earlier developments [G. Meng, A.J. Jaworski, T. Dyakowski, J.M. Hale,
Jaworski, Artur, Meng, Guantiang, White, Neil   +2 more
core   +1 more source

The development of an ultrasonic Doppler bed-load velocimeter [PDF]

, 1989
Includes bibliography.A instrument has been developed for measuring the velocity of solid particles adjacent to the pipe wall in a solids-liquid pipeline.
Lazarus, Mark Doron
core   +1 more source

Methodology for Determining the Correct Ultrasonic Pulse Velocity in Concrete

Buildings
Quite often, concrete strength parameters must be determined in the shortest possible time. Due to the strong correlation between concrete’s mechanical and acoustic properties, ultrasonic devices can be used for this purpose. However, the ultrasonic pulse velocity (UPV) is influenced by a variety of factors, including the curing and exploitation ...
Uldis Lencis, Aigars Udris, Patricia Kara De Maeijer, Aleksandrs Korjakins   +3 more
openaire   +3 more sources

Investigation of Concrete Segregation by Ultrasonic Pulse Velocity

Journal of Architectural Engineering Technology, 2017
Segregation is the separation of the components of fresh concrete or mortar, which can be caused by bad proportioning, insufficient mixing or excessive vibration. There are several tests which can be measured on hardened concrete or at the beginning of hardening. These are generally based on the percentage of the Fine aggregates between the top and the
Grini Abdelouaheb, Benouis Abdelhalim
openaire   +1 more source

Bio‐Inspired Artificial Ionic Mechanoreceptor

Advanced Functional Materials, EarlyView.
A skin‐inspired artificial mechanoreceptor based on ionic interactions is presented for biomimetic tactile sensing. Pressure‐driven ionic redistribution within microfluidic channels generates a self‐powered electrical signal without external bias. The generated waveform exhibits mechanoreceptor‐like temporal features, including overshoot and undershoot,
Mohammad Akbari, Jeppe Don, Lasse A. N. Pedersen, John Noee, Rassoul Tabassian   +4 more
wiley   +1 more source

Evaluation of Compressive Strength by Non- Destructive Test Using Ultrasonic Pulse Velocity With Maximum Size Aggregate (10 And 20)mm

Journal of Engineering and Sustainable Development, 2014
The concrete is tested non destructively to determine its mechanical properties (compressive strength) which is considered as the main property and the parameter used in its evaluation.
Laith A. Al-jaberi, Asmaa Mahdi Ali
doaj  

Analysis of the Stress-Strain State of operated reinforced Concrete Structures Using Ultrasound

Вестник Дагестанского государственного технического университета: Технические науки
Objective. Research and analysis of parameters of the stress-strain state of reinforced concrete beams using periodic ultrasonic testing in compressed and tensile zones and development of proposals for the application of the method in the inspection and ...
G. V. Nesvetaev, A. V. Kolleganov, N. A. Kolleganov, A. N. Ivlev, A. M. Omarov   +4 more
doaj   +1 more source

Estimativa da resistência do concreto à compressão por meio da velocidade de propagação dos pulsos ultrassônicos na pasta do concreto [PDF]

, 2012
Tese (doutorado) - Universidade Federal de Santa Catarina, Centro Tecnológico, Programa de Pós-Graduação em Engenharia CivilEsse trabalho propõe um procedimento alternativo para a estimativa da resistência à compressão do concreto através do método da ...
Irrigaray, Mário Arlindo Paz
core  

Advances in Solution‐Processed Textile Triboelectric Nanogenerators: Ink Formation, Processing Strategies, Applications, and Challenges

Advanced Functional Materials, EarlyView.
Advanced ink systems for solution‐processed textile triboelectric nanogenerators are systematically summarized, spanning conductive, tribo‐negative, and tribo‐positive layers. By connecting ink chemistry, deposition methods, and device function, the present review reveals the key governing principles of solution development and highlights practical ...
Xinlong Sun, Stephen Beeby
wiley   +1 more source

Influence of Ultrasonic Treatment on the Sedimentation Performance of Slime

Kuangchan zonghe liyong
This is an article in the field of mining engineering. Kaolinite and montmorillonite are the main clay minerals in coal slime, and clay minerals are the main factors affecting the sedimentation of coal slime.
Xiaobin ZHANG, Xin WEN, Weiwei CAO, Zhongshan LI, Jing TAN   +4 more
doaj   +1 more source