Zobrazeno 1 - 10
of 22
pro vyhledávání: '"B. W. Drinkwater"'
Publikováno v:
AIP Conference Proceedings.
The use of ultrasonic arrays to detect crack‐like defects is an important area in nondestructive evaluation. The array data, which contains scattered ultrasonic waves from a scatterer, can be used to reconstruct a high resolution image, e.g., using
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::665d418620917b1116b75cb046291f59
https://doi.org/10.1063/1.3591935
https://doi.org/10.1063/1.3591935
Publikováno v:
AIP Conference Proceedings.
An industrial application of ultrasonic array imaging is the inspection of austenitic welds with high inhomogeneity and anisotropy. These result in attenuation and perturbation of the signals that adversely affects imaging performance. Here, the effe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::80687ff284f87c375378d5d28535f709
https://doi.org/10.1063/1.3592054
https://doi.org/10.1063/1.3592054
Publikováno v:
AIP Conference Proceedings.
The quality of ultrasonic array imagery is adversely affected by uncompensated variations in the medium properties. A method for estimating the parameters of a general model of an inhomogeneous anisotropic medium is described. The model is comprised
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0f088a0ec17c3a2f8635505abfad2ff5
https://doi.org/10.1063/1.3591906
https://doi.org/10.1063/1.3591906
Autor:
C. J. L. Lane, A. K. Dunhill, B. W. Drinkwater, P. D. Wilcox, Donald O. Thompson, Dale E. Chimenti
Publikováno v:
AIP Conference Proceedings.
Single crystal components are used widely in the gas‐turbine industry. However, these components are elastically anisotropic which causes difficulties when performing NDE inspections with ultrasound. Recently an ultrasonic algorithm for a 2D array
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a30b781fc13db564123290ec2fd20fb3
https://doi.org/10.1063/1.3591930
https://doi.org/10.1063/1.3591930
Autor:
P. D. Wilcox, A. Velichko, B. W. Drinkwater, A. J. Croxford, M. D. Todd, Donald O. Thompson, Dale E. Chimenti
Publikováno v:
AIP Conference Proceedings.
A semi‐analytical finite element model is developed to study the scattering of plane guided waves obliquely incident on a straight geometric feature. The model is first used to investigate the reflection of the S0 mode from a free edge and the resu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b0d761a8f33f1b2cc146bd4782b739fc
https://doi.org/10.1063/1.3591844
https://doi.org/10.1063/1.3591844
Publikováno v:
AIP Conference Proceedings.
The measurement of material non‐linearity using ultrasound is an attractive concept, offering the potential to detect fatigue damage earlier than is possible with conventional techniques. Despite this advantage and much work in the field the curren
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::15a5fa38311ffb56bb6d53187fe2bd4e
https://doi.org/10.1063/1.3591872
https://doi.org/10.1063/1.3591872
Autor:
C. J. L. Lane, A. Dunhill, B. W. Drinkwater, P. D. Wilcox, Donald O. Thompson, Dale E. Chimenti
Publikováno v:
AIP Conference Proceedings.
Single crystal metal alloys are used extensively in the manufacture of jet engine components for their excellent mechanical properties at elevated temperatures. The increasing use of these materials and demand for longer operational life and improved
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e9333153940d1fc56fb077c7bef7a5a4
https://doi.org/10.1063/1.3362378
https://doi.org/10.1063/1.3362378
Publikováno v:
AIP Conference Proceedings.
The use of ultrasonic arrays to image and size crack‐like defects is an important area in non‐destructive evaluation. The features in the ultrasonic data from a crack‐like defect provide information about the size and orientation angle of the d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8acde272e1ccf752e4de340652be15f2
https://doi.org/10.1063/1.3362515
https://doi.org/10.1063/1.3362515
Autor:
L. Moreau, A. J. Hunter, B. W. Drinkwater, P. D. Wilcox, Donald O. Thompson, Dale E. Chimenti
Publikováno v:
AIP Conference Proceedings.
Over the past few years, ultrasonic phased arrays have shown good potential for nondestructive testing (NDT), thanks to high resolution imaging algorithms. Many algorithms are based on the full matrix capture, obtained by firing each element of an ul
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0efd43acbb9efa39e674d395c66b55e2
https://doi.org/10.1063/1.3362500
https://doi.org/10.1063/1.3362500
Publikováno v:
AIP Conference Proceedings.
Autofocus is a methodology for estimating and correcting errors in the assumed parameters of an imaging algorithm. It provides improved image quality and, therefore, better defect detection and characterization capabilities. In this paper, we present
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5898d9b9b74c35796c505e2ac57b155e
https://doi.org/10.1063/1.3362508
https://doi.org/10.1063/1.3362508