Results 281 to 290 of about 10,003 (333)
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Composite material ultrasonic phased array testing
AIP Conference Proceedings, 2019This thesis discusses the results of an ultrasound testing of a fiberglass plate using a flaw detector with phased antenna arrays. Fiber-reinforced laminated composite materials are widely used in modern light-weight structures. Non- destructive experiments carried out on the composite plate with artificial defects. The examined 5 mm sample was made of
N. A. Ryngach, A. V. Emirov
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Ultrasonic Phased Array Nondestructive Testing System Based on FPGA
Proceedings of the 2020 4th International Conference on Electronic Information Technology and Computer Engineering, 2020In ultrasonic phased array nondestructive testing system, CORDIC is used to optimize the algorithm of key function calculation or data processing in ultrasonic phased array instrument. This paper focuses on the research of ultrasonic phased array FPGA signal processing technology based on CORDIC algorithm, focusing on the ultrasonic echo orthogonal ...
Fenxian Tian, Juan Li, Jun Yang
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Fabrication of Weld Defects for Phased-Array Ultrasonic Testing
2018 International Conference on Applied Engineering (ICAE), 2018Artificial weld defect specimen has an important role in the training of non-destructive testing personnel. It simulates real defects occur in the actual inspection. Challenging factor in manufacturing weld defect is creating realistic defects. The methods in this study are deliberately to produce poor weldment and accommodate certain weld defect such ...
Nugroho P. Ariyanto +2 more
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Phased Array Automated Ultrasonic Testing (PA AUT) Pre-Qualification
Offshore Technology Conference, 2012Abstract Industry of automated ultrasonic testing (AUT) has advanced significantly sinceExxonMobil last conducted a pre-qualification exercise to test capabilities. Therefore, it was prudent that ExxonMobil test the ability of these systems aspotential for their use increased on upcoming projects.
Troy Andrew Widener +4 more
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Improvement of ultrasonic testing by phased arrays
Nuclear Engineering and Design, 1983Abstract Methods for defect reconstruction and classification using the flexible and fast electronic beam forming with phased arrays have been described. Using the electronic sector scan, a reflecting point is represented as a short circular curve, the length of which is dependent upon beam width and system sensitivity.
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Researches on ultrasonic image revise for phased array ultrasonic test of train wheel
SPIE Proceedings, 2011Ultrasonic image formed by Phased Array Ultrasonic probes placed on wheel tread is deformed. Especially for ultrasonic image around area of wheel disk hole, because that area has a complex construction and a long ultrasonic path. According to probes layout and beam angle, correction algorithms are designed to revise deformed ultrasonic images. Tests
Yu Zhang +5 more
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Application of phased arrays in ultrasonic nondestructive testing
2020The object of the research is ultrasonic nondestructive testing. The purpose of the work is to make analytical comparison of the techniques for ultrasonic with phased arrays. In the course of research the most promising techniques for ultrasonic imaging with phased arrays was determined according to analytical study of literature sources.
Fidel Castro Parimala Rangan +1 more
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Improved ultrasonic testing by phased array technique and its application
Nuclear Engineering and Design, 1985Abstract The phased array ultrasonic testing method is available for beam steering and focusing, and then the focused beam divergence angle can be narrowed and the sound level can be intensified at the focused region. In the present study, two examples of phased array application which are the linear scanning mode operation and the sector scanning ...
I. Komura +4 more
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Application of Ultrasonic Phased Array Testing Technology on Ladle Trunnion
2013The welding quality of the trunnion’s root welds is critical to the safety operation of ladles. However, due to the complex structure of the detecting surface, the non-destructive testing of these welds has been a significant problem. Ultrasonic phased array technology can achieve flexible and controllable ultrasound beam by changing the time delay of ...
Dong Hu, Qiang Wang, Changming Yuan
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New flaw feature extraction method for ultrasonic phased array nondestructive testing
2010 8th World Congress on Intelligent Control and Automation, 2010To realize automatic flaw classification of an ultrasonic phased array system, the key is to extract flaw feature that can mostly represent flaw's nature from ultrasonic signals. As ultrasonic echoes are nonstationary signals, wavelet packet transform (WPT) is a common feature extraction method. But it is fit for off-line signal analysis.
null Jian Li +2 more
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