Results 21 to 30 of about 105,270 (315)
A dynamic coal quantity detection system for conveyor belt based on ultrasonic array
Gong-kuang zidonghua, 2023 Dynamic coal quantity detection for conveyor belt is the foundation and key to achieving energy consumption optimization measures for multi-stage belt conveyors such as coal flow starting and automatic speed regulation.
HAO Hongtao, WANG Kai, DING Wenjie
doaj +1 more source
Ultrasonic Detection of Cavitation at Catheter Tips [PDF]
The Journal of the Acoustical Society of America, 1969 To assist in the identification of inner heart structures during ultrasonic cardiac diagnosis, various liquids have been injected through catheters into heart chambers. Each injection produces a cloud of ultrasonic echoes within the blood-filled catheterized chamber.
F W, Kremkau +4 more
openaire +2 more sources
M-SAC-VLADNet: A Multi-Path Deep Feature Coding Model for Visual Classification
Entropy, 2018 Vector of locally aggregated descriptor (VLAD) coding has become an efficient feature coding model for retrieval and classification. In some recent works, the VLAD coding method is extended to a deep feature coding model which is called NetVLAD.
Boheng Chen, Jie Li, Gang Wei, Biyun Ma
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Ultrasonic sensing using Yb3+/Er3+-codoped distributed feedback fibre grating lasers. [PDF]
, 2005 Yb3+/Er3+-codoped distributed feedback (YbEr-DFB) fibre grating lasers have been investigated for the detection of ultrasonic Lamb waves generated in an aluminum plate. Two sensor configurations have been investigated. A path length imbalanced readout
Ye, Chen-Chun, Tatam, Ralph P.
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An Ultrasonic-Based Detection of Air-Leakage for the Unclosed Components of Aircraft
Aerospace, 2021 Air-leakage detection is among the most important processes at the assembly stage of unclosed components, especially for large aircraft. A series of air-leakage detecting methods are generally applied during the final assembly, nevertheless, many of them
Yanlin Lyu +6 more
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Experimental study on effect of freezing time of liquid CO2 on pore structure of coal
Meikuang Anquan, 2022 In order to promote gas drainage in low-permeability coal seams, implement the optimization of enhancing permeability and promoting gas drainage technology by liquid CO2 injection into freeze-thaw cracked coal seams, taking Changcun Coal Mine as the ...
ZHANG Huifeng
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Sensors, 2018 A sensitivity-improved ultrasonic sensor is proposed and demonstrated experimentally in this present study. The device is comprised only a fiber-optic microcavity that is formed by discharging a short section of hollow core fiber (HCF).
Tingting Gang +3 more
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IEEE Access, 2021 Aiming to detect concrete defects, we propose a new identification method based on stochastic configuration networks. The presented model has been trained by time-domain and frequency-domain features which are extracted from filtering and decomposing ...
Jinhui Zhao +5 more
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Ultrasonic resonance of defects for nonlinear acoustic imaging and NDT [PDF]
, 2014 The effect of local defect resonance (LDR) on the nonlinear ultrasonic response of defects is studied and applied for enhancement of sensitivity of nonlinear ultrasonic ...
Igor Solodov
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Sprayer boom height measurement in wheat field using ultrasonic sensor: An exploratory study
Frontiers in Plant Science, 2022 In order to explore the influencing factors and laws of ultrasonic sensor detecting wheat canopy height, designed an ultrasonic sensor detection height test platform with speed adjustable function.
Xueguan Zhao +10 more
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