Results 11 to 20 of about 115,036 (200)
Sensors, 2022 Butt welding is extensively applied in long-distance oil and gas pipelines, and it is of great significance to conduct non-destructive ultrasonic testing of girth welds in order to avoid leakage and safety accidents during pipeline production and ...
Bolun Li +6 more
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BMC Medical Genomics, 2021 Background Some ultrasonic soft markers can be found during ultrasound examination. However, the etiology of the fetuses with ultrasonic soft markers is still unknown.
Meiying Cai +6 more
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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
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Pulse Peak Delay-Total Focusing Method for Ultrasonic Tomography on Concrete Structure
Applied Sciences, 2021 An ultrasonic array device like the A1040 MIRA is used to non-destructively visualize the inside of concrete structures. A data set acquired by the ultrasonic array device is so unfocused that an image reconstruction algorithm is required to transform ...
Hungjoo Kwon +2 more
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Monolithic ultrasound fingerprint sensor. [PDF]
, 2017 This paper presents a 591×438-DPI ultrasonic fingerprint sensor. The sensor is based on a piezoelectric micromachined ultrasonic transducer (PMUT) array that is bonded at wafer-level to complementary metal oxide semiconductor (CMOS) signal processing ...
Boser, Bernhard E +7 more
core +1 more source
An annular array with fiber composite microstructure for far field NDT imaging applications [PDF]
, 2010 This paper describes the design and fabrication of a reduced element count annular array for far field NDT imaging applications, built with a random fiber piezoelectric composite microstructure.
Dziewierz, J. +5 more
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Cailiao gongcheng, 2020 Aiming at the problem of accurate identification of delamination defects of composite laminates, an optimization method of activation aperture of phased array ultrasonic testing was proposed by simulation and experiment, and the effects of the activation
CAO Hong-yi +6 more
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Improving elevation resolution in phased-array inspections for NDT [PDF]
, 2019 The Phased Array Ultrasonic Technique (PAUT) offers great advantages over the conventional ultrasound technique (UT), particularly because of beam focusing, beam steering and electronic scanning capabilities.
Brizuela, Jose David +4 more
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Independent trapping and manipulation of microparticles using dexterous acoustic tweezers [PDF]
, 2014 An electronically controlled acoustic tweezer was used to demonstrate two acoustic manipulation phenomena: superposition of Bessel functions to allow independent manipulation of multiple particles and the use of higher-order Bessel functions to trap ...
Cochran, Sandy +6 more
core +4 more sources
MOSAIC: An integrated ultrasonic 2-D array system [PDF]
, 2007 An investigation into the development of an ultrasound imaging system capable of customization for multiple applications via the tessellation of in-system programmable scalable modules, or tiles, is presented here.
Cochran, S. +4 more
core +1 more source