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Application of Phased Array Ultrasonic Test for Insulation System of CSMC
IEEE transactions on applied superconductivityThe insulation system is an important part of the fusion magnet coils and its role is to mechanically support, insulate, fix, and protect superconducting magnets. The insulation materials used for the China Fusion Engineering Test Reactor (CFETR) Central
Xiaochuan Liu +7 more
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FUNDAMENTALS OF ULTRASONIC PHASED ARRAYS
Modern Physics Letters B, 2008It is shown that the wave field of an ultrasonic linear array is closely related to that of an equivalent single element transducer. Using this relationship, it is demonstrated how one can construct a simple and efficient ultrasonic beam model for the wave field of a steered linear array.
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Phase Aberration Correction of Ultrasonic Phased Array Signals
2008 Congress on Image and Signal Processing, 2008By properly adjusting the time delays, phased arrays can dynamically phase-steer and focus the ultrasonic beams. But phase aberration due to perturbation of system and materials degrade ultrasound performance by disrupting the ultrasound beam focus.
Xia Zhao, Zhaoba Wang, Bin Liu
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Element parameters for ultrasonic phased arrays
AIP Conference Proceedings, 2002The industrial use of ultrasonic phased arrays is limited by several factors, such as budget, coverage, beam steering required, as well as the limitations of array manufacture. Only at high frequencies does the minimum array size become a functional limitation.
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, 2020
In this study, near-surface cracks in a railhead are inspected thoroughly using phased array ultrasonic testing (PAUT). This research finds an alternative technique to inspect for near-surface cracks because the conventional non-destructive testing ...
R. Anandika, J. Lundberg, C. Stenström
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In this study, near-surface cracks in a railhead are inspected thoroughly using phased array ultrasonic testing (PAUT). This research finds an alternative technique to inspect for near-surface cracks because the conventional non-destructive testing ...
R. Anandika, J. Lundberg, C. Stenström
semanticscholar +1 more source
Ultrasonic phased arrays for weld inspections
AIP Conference Proceedings, 2002Ultrasonic phased arrays are well suited to weld inspections. Phased arrays can perform electronic scanning (where a scan pattern is rapidly multiplexed across a component), sectorial scanning (where the angle of inspection is varied), and combinations of these two.
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Ultrasonic phased array design for reduced crosstalk
The Journal of the Acoustical Society of America, 1998In recent years, therapeutic ultrasound has received increased attention as a treatment modality for cancer therapy (hyperthermia) and heart arrythmia (ablation surgery). Ultrasonic phased arrays offer the benefit of noninvasive treatment with the flexibility of variable focus and beam steering. In designing and building these arrays, electromechanical
John Dodson, Karl Grosh
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Optical beamforming for ultrasonic phased arrays
LEOS '95. IEEE Lasers and Electro-Optics Society 1995 Annual Meeting. 8th Annual Meeting. Conference Proceedings, 2002This paper describes potentially low cost, lightweight, and compact optical beamforming techniques for ultrasonic phased arrays. The use of a pair of tiny stamp-size low cost nematic liquid crystal (NLC) 2-D optical array devices for the transducer control sites allows compact, low control power beamforming for large (i.e., >128 element) 2-D transducer
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Ultrasonic imaging with narrow aperture phased array
Electronics and Communications in Japan (Part III: Fundamental Electronic Science), 2002AbstractThis paper describes the method of narrow aperture phased array ultrasonic computed tomography (NAPA‐CT), conceived for three‐dimensional imaging with increased resolution and speed in the field of clinical diagnosis. By reducing the size of the transducer in the thickness direction, a beam is formed such that the focal region of the phased ...
Naoki Takizawa +2 more
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Ultrasonics, 2020
High-order ultrasonic guided wave modes have recently been attracting interest in a variety of nondestructive testing applications, ranging from thickness gauging to bond characterization. Accurate control of the transmitted ultrasonic guided wave mode is paramount when working at frequencies above the cutoff of the first high-order mode.
Geoffrey, Veit, Pierre, Bélanger
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High-order ultrasonic guided wave modes have recently been attracting interest in a variety of nondestructive testing applications, ranging from thickness gauging to bond characterization. Accurate control of the transmitted ultrasonic guided wave mode is paramount when working at frequencies above the cutoff of the first high-order mode.
Geoffrey, Veit, Pierre, Bélanger
openaire +2 more sources