Results 1 to 10 of about 115,036 (200)

Flow Velocity Measurement Using a Spatial Averaging Method with Two-Dimensional Flexural Ultrasonic Array Technology [PDF]

open access: yesSensors, 2019
Accurate average flow velocity determination is essential for flow measurement in many industries, including automotive, chemical, and oil and gas.
Lei Kang   +6 more
doaj   +7 more sources

Measurement of a 3D Ultrasonic Wavefield Using Pulsed Laser Holographic Microscopy for Ultrasonic Nondestructive Evaluation [PDF]

open access: yesSensors, 2018
In ultrasonic array imaging, 3D ultrasonic wavefields are normally recorded by an ultrasonic piezo array transducer. Its performance is limited by the configuration and size of the array transducer.
Xing Wang   +4 more
doaj   +3 more sources

Application of Ultrasonic Array Method for the Inspection of TC18 Addictive Manufacturing Titanium Alloy [PDF]

open access: yesSensors, 2019
Ultrasonic arrays have been investigated for inspecting the quality of special materials. Unfortunately, non-destructive testing and evaluation (NDT&E) of internal defects in additive manufacturing (AM) materials are difficult due to the anisotropy ...
Wentao Li, Zhenggan Zhou, Yang Li
doaj   +2 more sources

Multi Spherical Wave Imaging Method Based on Ultrasonic Array [PDF]

open access: yesSensors, 2022
The imaging range of traditional plane wave imaging is usually limited by the directivity of the plane wave. In this paper, a multi spherical wave imaging method based on an ultrasonic array is proposed, which radiates both compression and shear waves in
Zhi-Ying Liu   +3 more
doaj   +2 more sources

Hand Gesture Recognition Using Ultrasonic Array with Machine Learning [PDF]

open access: yesSensors
In the field of gesture recognition technology, accurately detecting human gestures is crucial. In this research, ultrasonic transducers were utilized for gesture recognition.
Jaewoo Joo, Jinhwan Koh, Hyungkeun Lee
doaj   +2 more sources

3D cone-beam breast ultrasonic tomography imaging for capacitive micromachined ultrasonic transducer cylindrical array [PDF]

open access: yesJASA Express Letters, 2021
In this paper, a 3D cone-beam ultrasonic transmission tomography method for capacitive micromachined ultrasonic transducer (CMUT) cylindrical phased array was proposed.
Yu Pei   +6 more
doaj   +1 more source

Sound Field Modeling Method and Key Imaging Technology of an Ultrasonic Phased Array: A Review

open access: yesApplied Sciences, 2022
An ultrasonic phased array consists of multiple ultrasonic probes arranged in a certain regular order, and the delay time of the excitation signal sent to each array element is controlled electronically.
Qian Xu, Haitao Wang
doaj   +1 more source

Numerical simulation of phased array ultrasonic testing for fillet weld defects of type-B sleeve

open access: yesYou-qi chuyun, 2022
Type-B sleeve repair is one of the main permanent repair methods for long-distance oil and gas pipelines at present. However, fillet weld defects are often produced during the operation, which need to be detected and evaluated by phased array ultrasonic ...
Hongbo ZHANG   +5 more
doaj   +1 more source

In situ stress measurement method of deep borehole based on multi-array ultrasonic scanning technology

open access: yesFrontiers 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

Nonlinear Ultrasonic Phased Array Imaging [PDF]

open access: yesPhysical Review Letters, 2014
This Letter reports a technique for the imaging of acoustic nonlinearity. By contrasting the energy of the diffuse field produced through the focusing of an ultrasonic array by delayed parallel element transmission with that produced by postprocessing of sequential transmission data, acoustic nonlinearity local to the focal point is measured. Spatially
Potter, J. N.   +2 more
openaire   +3 more sources

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