Results 31 to 40 of about 10,003 (333)

Ultrasonic flaw detection of discontinuous defects in magnesium alloy materials [PDF]

open access: yesChina 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
doaj   +1 more source

Методы и средства измерения пространственно-временных характеристик ультразвуковых линейных фазированных антенных решеток [PDF]

open access: yes, 2015
Розглянуті методи вимірювання просторово-часових характеристик ультразвукових лінійних фазованих антенних решіток. Представлені структурні схеми розроблених систем вимірювання.
Kraskovskyj, O. P.   +8 more
core   +1 more source

Improving elevation resolution in phased-array inspections for NDT [PDF]

open access: yes, 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
core   +1 more source

Total focussing method for volumetric imaging in immersion non destructive evaluation [PDF]

open access: yes, 2007
This paper describes the use of a 550 (25x22) element 2MHz 2D piezoelectric composite array in immersion mode to image an aluminum test block containing a collection of artificial defects.
Drinkwater, B.   +6 more
core   +1 more source

The high frequency flexural ultrasonic transducer for transmitting and receiving ultrasound in air [PDF]

open access: yes, 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

Acoustic Field of a Linear Phased Array: A Simulation Study of Ultrasonic Circular Tube Material

open access: yesSensors, 2019
As ultrasonic wave field radiated by an ultrasonic transducer influences the results of ultrasonic nondestructive testing, simulation and emulation are widely used in nondestructive testing. In this paper, a simulation study is proposed to detect defects
Zhitao Xiao   +6 more
doaj   +1 more source

Research progress in ultrasonic testing for friction stir welding of aluminum alloy

open access: yesCailiao gongcheng, 2022
The defects in friction stir welding (FSW) of aluminum alloy, e.g., tunnel defect, lack of penetration (LOP) and kissing bond, are with complex shape and narrow gap by inappropriate welding parameters.
JIN Shijie, TIAN Xin, LIN Li
doaj   +1 more source

Phased electromagnetic acoustic transducer array for Rayleigh wave surface defect detection [PDF]

open access: yes, 2020
A phased electromagnetic acoustic transducer (EMAT) array system has been developed for detection and characterisation of surface breaking defects. An array of four linear coils which are individually controlled are used to generate a Rayleigh wave.
Dixon, S.   +3 more
core   +1 more source

Secondary Interface Echoes Suppression for Immersion Ultrasonic Imaging Based on Phase Circular Statistics Vector

open access: yesSensors, 2023
Immersion ultrasonic phased array imaging technology offers great advantages, particularly in coupling and automatic detection of industrial non-destructive testing (NDT).
Ming Chen   +5 more
doaj   +1 more source

Ultrasonic inspection of spent nuclear fuel casks [PDF]

open access: yes, 2007
The paper describes the main aspects of ultrasonic non-destructive inspection of casks with spent fuel. Digital Focus Array technique is proposed for acoustic imaging of spent nuclear fuel casks' closure weld.
I Bolotina   +8 more
core   +2 more sources

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