Results 21 to 30 of about 1,899,314 (382)
Ultrasonics, 2022 With the increasing use of high density polyethylene (HDPE) pipes in nuclear industry which puts safety at the forefront, ultrasonic array imaging methods play a vital role in the structural integrity of HDPE pipe materials.
J. Rao +5 more
semanticscholar +1 more source
Frontiers in Earth Science, 2022 In order to improve the accuracy and efficiency of deep in-situ stress measurement, based on the wall collapse in deep borehole, a deep borehole in-situ stress measurement method based on multi-array ultrasonic scanning technology is proposed in this ...
Jinchao Wang +5 more
doaj +1 more source
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
doaj +1 more source
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
doaj +1 more source
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
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
doaj +1 more source
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
Spot weld analysis with 2D ultrasonic Arrays [PDF]
Journal of Research of the National Institute of Standards and Technology, 2004 This paper describes a threefold method of testing the performance of an array-based ultrasonic tool for nondestructive testing of spot welds. The tool is described in its capabilities, use, and advantages over existing counterparts. Performance testing for and the results from carrying out the testing are described.
Denisov, A. A. +4 more
openaire +2 more sources
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
core +1 more source
The high frequency flexural ultrasonic transducer for transmitting and receiving ultrasound in air [PDF]
, 2020 Flexural ultrasonic transducers are robust and low cost sensors that are typically used in industry for distance ranging, proximity sensing and flow measurement.
Dixon, Steve M. +2 more
core +3 more sources