A MODEL-BASED PROBABILITY OF DETECTION APPROACH TO REFINEMENT OF EDDY CURRENT INSPECTION OF CONDENSER TUBES

2008 ◽  
Author(s):  
N. Trepal ◽  
J. M. Liu ◽  
K. G. Lipetzky ◽  
S. Salekeen ◽  
Donald O. Thompson ◽  
...  
Keyword(s):  
Eddy Current ◽  
Probability Of Detection ◽  
Model Based ◽  
Detection Approach ◽  
Eddy Current Inspection

VARIABLES AFFECTING PROBABILITY OF DETECTION IN BOLT HOLE EDDY CURRENT INSPECTION

2009 ◽  
Author(s):  
H. Lemire ◽  
T. W. Krause ◽  
M. Bunn ◽  
D. J. Butcher ◽  
Donald O. Thompson ◽  
...  
Keyword(s):  
Eddy Current ◽  
Probability Of Detection ◽  
Eddy Current Inspection

A New Approach to Improve the Probability of Detection of Eddy Current Inspection

2013 ◽  
Vol 712-715 ◽  
pp. 2026-2029
Author(s):  
Wu Bo Zhang ◽  
Shu Li Pan ◽  
Ping Jie Huang ◽  
Di Bo Hou ◽  
Guang Xin Zhang
Keyword(s):  
Eddy Current ◽  
Crack Size ◽  
Probability Of Detection ◽  
Metallic Structures ◽  
New Approach ◽  
Eddy Current Inspection ◽  
The Common ◽  
Pod Analysis ◽  
Non Destructive ◽  
Evaluation Techniques

Eddy current testing is now a widely used Non Destructive Test (NDT) method for determining the size of cracks in metallic structures. The probability of detection (POD) is a key metric in assessing the effectiveness of nondestructive evaluation techniques. The POD analysis using common method is studied and modified. The eddy current sensor effective is discussed to support the proposed method. The new method is shown better result in improve the POD than the common one. The estimates of POD as a function of crack size will be valuable for future model-assisted POD study.

Improving Probability of Detection of Bolt Hole Eddy Current Inspection

2010 ◽  
Vol 21 (3) ◽  
pp. 141-156 ◽  
Author(s):  
Holly Lemire ◽  
P. R. Underhill ◽  
T. W. Krause ◽  
M. Bunn ◽  
D. J. Butcher
Keyword(s):  
Eddy Current ◽  
Probability Of Detection ◽  
Eddy Current Inspection

MODEL-ASSISTED PROBABILITY OF DETECTION EVALUATION FOR EDDY CURRENT INSPECTION OF FASTENER SITES

2009 ◽  
Author(s):  
John C. Aldrin ◽  
Jeremy S. Knopp ◽  
Eric A. Lindgren ◽  
Kumar V. Jata ◽  
Donald O. Thompson ◽  
...  
Keyword(s):  
Eddy Current ◽  
Probability Of Detection ◽  
Eddy Current Inspection ◽  
Detection Evaluation

Probabilistic evaluation of detection capability of eddy current testing to inspect pitting on a stainless steel clad using multiple signal features

2020 ◽  
Vol 64 (1-4) ◽  
pp. 47-55
Author(s):  
Takuma Tomizawa ◽  
Haicheng Song ◽  
Noritaka Yusa
Keyword(s):  
Stainless Steel ◽  
Eddy Current ◽  
Pressure Vessels ◽  
Eddy Current Testing ◽  
Probability Of Detection ◽  
Current Testing ◽  
Multiple Signal ◽  
Signal Features ◽  
Inner Surface ◽  
Drill Holes

This study proposes a probability of detection (POD) model to quantitatively evaluate the capability of eddy current testing to detect flaws on the inner surface of pressure vessels cladded by stainless steel and in the presence of high noise level. Welded plate samples with drill holes were prepared to simulate corrosion that typically appears on the inner surface of large-scale pressure vessels. The signals generated by the drill holes and the noise caused by the weld were examined using eddy current testing. A hit/miss-based POD model with multiple flaw parameters and multiple signal features was proposed to analyze the measured signals. It is shown that the proposed model is able to more reasonably characterize the detectability of eddy current signals compared to conventional models that consider a single signal feature.

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