Results 1 to 10 of about 14,446 (253)

Multi-View Reconstruction Fusing Ultrasonic Phased Array and Camera for Mobile Robots in Simulation Environment

IEEE Access
Distance sensors are important for mobile robots to perceive surrounding environment. Typical sensors like LiDARs and depth cameras have been widely used, yet each has its limitations, such as LiDARs’ relatively high cost, depth cameras’ ...
Jixiang Ren, Xiaoping Hong
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Three-dimensional model reconstruction of pipeline with inner wall corrosion based on ultrasonic phased array technology

You-qi chuyun, 2023
The inner wall corrosion of pipelines is concealed and hard to monitor in time. In order to visualize the shape of the internally corroded pipeline, as well as the defect volume and its spatial distribution, a three-dimensional (3D) model reconstruction ...
Yulong ZHANG, Rongguo HOU, Rui WANG, Miaomiao ZHANG, Zhe LYU   +4 more
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Wavenumber Imaging of Near-Surface Defects in Rails using Green’s Function Reconstruction of Ultrasonic Diffuse Fields

Sensors, 2019
Wavenumber imaging with Green’s function reconstruction of ultrasonic diffuse fields is used to realize fast imaging of near-surface defects in rails.
Hui Zhang, Haiyan Zhang, Jiayan Zhang, Jianquan Liu, Wenfa Zhu, Guopeng Fan, Qi Zhu   +6 more
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Ultrasonic flaw detection of discontinuous defects in magnesium alloy materials [PDF]

China Foundry, 2019
Phased array ultrasonic testing, an effective ultrasonic testing (UT) technology, has been widely used in steel inspection because of its high accuracy, sensitivity, and efficiency.
Sheng-nan Xue, Qi-chi Le, Yong-hui Jia
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A nearly perfect omnidirectional shear-horizontal (SH) wave transducer based on a thickness poled, thickness-shear (d15) piezoelectric ring

, 2017
The fundamental shear horizontal (SH0) wave in plates is of great importance in the field of nondestructive testing (NDT) and structural health monitoring (SHM) since it is the unique non-dispersive guided wave mode.
Huan, Qiang, Li, Faxin, Miao, Hongchen
core   +1 more source

Ultrasonic Sampling Phased Array Testing as a Replacement for X-ray Testing of Weld Joints in Ship Construction [PDF]

TransNav, 2012
According to European Standard EN 1712 ultrasonic testing of thin-walled welded joints is mandatory for wall thicknesses of more than 8 mm only. Any thinner components do have to undergo X-ray inspection. Besides various advantages of X-ray testing viz.
Andrey Bulavinov, Roman Pinchuk, Sergey Pudovikov, Christian Boller   +3 more
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Full matrix capture and the total focusing imaging algorithm using laser induced ultrasonic phased arrays [PDF]

, 2016
Laser ultrasonics is a technique where lasers are used for the generation and detection of ultrasound instead of conventional piezoelectric transducers.
Clark, Matt, Stratoudaki, Theodosia, Wilcox, Paul D.   +2 more
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A Robust Approach to Optimal Matched Filter Design in Ultrasonic Non-Destructive Evaluation (NDE) [PDF]

, 2016
The matched filter was demonstrated to be a powerful yet efficient technique to enhance defect detection and imaging in ultrasonic non-destructive evaluation (NDE) of coarse grain materials, provided that the filter was properly designed and optimized ...
Hayward, Gordon, Li, Minghui
core   +3 more sources

Using of phased arrays to study of internal organs [PDF]

, 2016
В статье показаны преимущества использования фазированных антенных решеток по сравнению с одиночными ультразвуковыми датчиками, также рассмотрены сложности разработки устройств на основе фазированных антенных решеток и возможные пути их устранения.
Асочаков, А. С., Булгакова, О. В., Шульгина, Юлия Викторовна   +2 more
core  

TESTING RESEARCH ON PHASED ARRAY ULTRASONIC OF FILLET WELD OF RAPID-COOLING HEAT EXCHANGER

Jixie qiangdu, 2017
It is important for related equipment in the safe and stable performance that the integrality quality of the fillet welds of rapid-cooling heat exchanger.
OU XuSheng, QI LingMin, HAN TaiKun
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