Zobrazeno 1 - 10
of 15
pro vyhledávání: '"Eric B. Shell"'
Autor:
Eric B. Shell, Siamack Mazdiyasni, Harold A. Sabbagh, Matthew R. Cherry, Erin K. Oneida, Elias H. Sabbagh, Alisha L. Hutson, R. Kim Murphy, John C. Aldrin
Publikováno v:
AIP Conference Proceedings.
Recent work has demonstrated the capability of applying inverse methods to automated eddy current (EC) data of surface breaking cracks and notches of various sizes, orientations and aspect ratios. However, not all eddy current indications in turbine
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::745811f46931a7459fc4d3896b98ff51
https://doi.org/10.1063/1.5099815
https://doi.org/10.1063/1.5099815
Publikováno v:
AIP Conference Proceedings.
The Bayesian approach to inference from measurement data has the potential to provide highly reliable characterizations of flaw geometry by quantifying the confidence in the estimate results. The accuracy of these confidence estimates depends on the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ed7a8d901550fe9a50c63c7da883a15d
https://doi.org/10.1063/1.4974692
https://doi.org/10.1063/1.4974692
Autor:
R. Kim Murphy, Erin K. Oneida, Harold A. Sabbagh, Elias H. Sabbagh, Siamack Mazdiyasni, Ryan D. Mooers, Eric B. Shell, John C. Aldrin, Eric A. Lindgren
Publikováno v:
AIP Conference Proceedings.
A model-based calibration process is introduced that estimates the state of the eddy current probe. First, a carefully designed surrogate model was built using VIC-3D® simulations covering the critical range of probe rotation angles, tilt in two dir
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9124ca4d867432b4ec5a35595af1521d
https://doi.org/10.1063/1.4974691
https://doi.org/10.1063/1.4974691
Autor:
Harold A. Sabbagh, Eric A. Lindgren, Eric B. Shell, John C. Aldrin, Elias H. Sabbagh, Siamack Mazdiyasni, R. Kim Murphy, Erin K. Oneida
Publikováno v:
AIP Conference Proceedings.
The objective of this work is to expand eddy current inversion methods to enable estimation of flaw dimensions and orientations for data collected using a variety of scan resolutions and filter configurations. Prior work [1, 2] has demonstrated the c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::284926d468013f5b2dfd63e957e74d0a
https://doi.org/10.1063/1.4940558
https://doi.org/10.1063/1.4940558
Autor:
Eric A. Lindgren, R. Kim Murphy, Erin K. Oneida, Eric B. Shell, Harold A. Sabbagh, John C. Aldrin, Siamack Mazdiyasni, Elias H. Sabbagh
Publikováno v:
AIP Conference Proceedings.
The objective of this work is to demonstrate and validate model-based inversion techniques to characterize length, depth, width and orientation of surface-breaking cracks using eddy current NDE under varying probe conditions. A series of parametric s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::246d0416acc09250a1c8099e7df0c548
https://doi.org/10.1063/1.4940539
https://doi.org/10.1063/1.4940539
Autor:
Harold A. Sabbagh, John C. Aldrin, Elias H. Sabbagh, R. Kim Murphy, Eric B. Shell, Eric A. Lindgren, Siamack Mazdiyasni
Publikováno v:
AIP Conference Proceedings.
The objective of this work is to demonstrate model-based inversion techniques to characterize the length, depth, width, and orientation of surface-breaking cracks using eddy current (EC) NDE. The paper presents experimental testing to acquire high fi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::99b5f840af5f1214c6e512dc837d500d
https://doi.org/10.1063/1.4914645
https://doi.org/10.1063/1.4914645
Autor:
John C. Aldrin, Eric B. Shell, Charles Annis, Harold A. Sabbagh, Jeremy S. Knopp, Eric A. Lindgren
Publikováno v:
AIP Conference Proceedings.
This paper introduces different data analysis strategies and characterization metrics for (1) designing and optimizing NDE characterization techniques, (2) validating NDE characterization performance and (3) ensuring in-service quality control. Rathe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::125afc7bf84f3e7084ff798f52b4a8e2
https://doi.org/10.1063/1.4914688
https://doi.org/10.1063/1.4914688
Autor:
Harold A. Sabbagh, John C. Aldrin, Jeremy S. Knopp, Eric A. Lindgren, Charles Annis, Eric B. Shell
Publikováno v:
AIP Conference Proceedings.
When performing inverse-methods for the characterization of cracks, there is a need to assess the quality of the result without prior knowledge of the flaw state. This paper investigates the use of two estimation metrics, confidence intervals on para
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b964ecb52e043988005640d3f2c0f465
https://doi.org/10.1063/1.4914813
https://doi.org/10.1063/1.4914813
Publikováno v:
Materials Science Forum. :649-654
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d3cfe7498c3ee5ed68c5980bc5127481
https://doi.org/10.4028/www.scientific.net/msf.426-432.649
https://doi.org/10.4028/www.scientific.net/msf.426-432.649
Publikováno v:
Materials Science and Engineering: A. 269:98-103
Ti–6Al–4V alloy specimens were tested under conditions of fretting fatigue, with the contact geometry, the normal stress, as well as the cyclic stress selected such that the mixed, slip-stick regime prevails during the experiments. Following test
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::388ad992823067b056e281598f9e6ba2
https://doi.org/10.1016/s0921-5093(99)00138-0
https://doi.org/10.1016/s0921-5093(99)00138-0