Wavenumber–frequency deconvolution of aeroacoustic microphone phased array data of arbitrary coherence

2016 ◽  
Vol 382 ◽  
pp. 13-42 ◽  
Author(s):  
Christopher J. Bahr ◽  
Louis N. Cattafesta
Keyword(s):  
Phased Array ◽  
Array Data

scholarly journals Blending of phased array data

2018 ◽  
Author(s):  
Arno Duijster ◽  
Gert-Jan van Groenestijn ◽  
Paul van Neer ◽  
Gerrit Blacquière ◽  
Arno Volker
Keyword(s):  
Phased Array ◽  
Array Data

VARIABLE SPLIT APERTURE PROCESSING OF FULL MATRIX CAPTURE PHASED ARRAY DATA

2011 ◽  
Author(s):  
R. Long ◽  
P. Cawley ◽  
J. Russell ◽  
Donald O. Thompson ◽  
Dale E. Chimenti
Keyword(s):  
Phased Array ◽  
Array Data ◽  
Full Matrix

scholarly journals Image reconstruction from phased-array data based on multichannel blind deconvolution

2015 ◽  
Vol 33 (9) ◽  
pp. 1106-1113 ◽  
Author(s):  
Huajun She ◽  
Rong-Rong Chen ◽  
Dong Liang ◽  
Yuchou Chang ◽  
Leslie Ying
Keyword(s):  
Image Reconstruction ◽  
Phased Array ◽  
Blind Deconvolution ◽  
Array Data

scholarly journals Automated Flaw Detection in Multi-channel Phased Array Ultrasonic Data Using Machine Learning

2021 ◽  
Vol 40 (3) ◽  
Author(s):  
Oskar Siljama ◽  
Tuomas Koskinen ◽  
Oskari Jessen-Juhler ◽  
Iikka Virkkunen
Keyword(s):  
Neural Networks ◽  
Convolutional Neural Networks ◽  
High Speed ◽  
Phased Array ◽  
Flaw Detection ◽  
Data Sets ◽  
Clear Trend ◽  
Array Data ◽  
The Rich ◽  
Rich Data

AbstractModern ultrasonic inspections utilize ever-richer data-sets made possible by phased array equipment. A typical inspection may include tens of channels with different refraction angle, that are acquired at high speed. These rich data sets allow highly reliable and efficient inspection in complex cases, such as dissimilar metal or austenitic stainless steel welds. The rich data sets allow human inspectors to detect cracks with low signal-to-noise ratio from the wider signal patterns. There’s a clear trend in the industry to even richer data sets with full matrix capture (FMC) and related techniques. Convolutional neural networks have recently shown capability to detect flaws with human level accuracy in ultrasonic signals at the B-scan level. To enable automated flaw detection at human-level accuracy for critical applications, these neural networks need be developed to take advantage of today’s rich phased array data-sets. In the present paper, we extend previous work and develop convolutional neural networks that perform highly reliable flaw detection on typical multi-channel phased array data on austenitic welds. The results show, that the modern neural networks can accommodate the rich ultrasonic data and display high flaw detection performance.

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