Principal Components Analysis of Multifrequency Eddy Current Data Used to Measure Pressure Tube to Calandria Tube Gap

Shokralla, Shaddy; Morelli, Jordan; Krause, Thomas W.

doi:10.1109/jsen.2016.2529721

Cited by 27 publications

(27 citation statements)

References 15 publications

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“…The principal components analysis employed was the same method that was employed in [2]. The Dodd and Deeds analytical model [5] and the Desjardins et al model applied to flat plates with separated driver-pickup coils [7], [6] were both used to generate the voltage response for varying PT and CT conditions.…”

Section: Principal Components Analysis Applied To Analytical Model Damentioning

confidence: 99%

“…The Dodd and Deeds analytical model [5] and the Desjardins et al model applied to flat plates with separated driver-pickup coils [7], [6] were both used to generate the voltage response for varying PT and CT conditions. The modelling parameters, as used in [2], include a PT to CT gap ranging from 0 mm to 16 mm, PT resistivities ranging between 45 cm and 60 cm and PT wall thicknesses of 3.48 mm, 3.76 mm, and 4.36 mm. The range of resistivities and wall thicknesses span the upper and lower limits found in-reactor [2].…”

Section: Principal Components Analysis Applied To Analytical Model Damentioning

confidence: 99%

“…The modelling parameters, as used in [2], include a PT to CT gap ranging from 0 mm to 16 mm, PT resistivities ranging between 45 cm and 60 cm and PT wall thicknesses of 3.48 mm, 3.76 mm, and 4.36 mm. The range of resistivities and wall thicknesses span the upper and lower limits found in-reactor [2].…”

Section: Principal Components Analysis Applied To Analytical Model Damentioning

confidence: 99%

“…Multifrequency eddy current non-destructive evaluation (NDE) may be preferred over single frequency eddy current NDE due to its multiple advantages, which include different depths of penetration, varying sensitivity to lift off and variable noise sensitivity [1], [2]. Multifrequency eddy current NDE is applied to measure pressure tube (PT) to calandria tube (CT) separation, known as the gap, which is essential for CANDU ® fuel channel inspections [3].…”

Section: Introductionmentioning

confidence: 99%

“…In this work, principal components analysis was performed on the Desjardins et al plate model of the multifrequency PT to CT gap measurement [7], [6]. The results were analyzed and compared to the PCA analysis done on previously published Dodd and Deeds model results along with accompanying experimental data [2].…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Comparison of analytical eddy current models using principal components analysis

Contant¹,

Luloff²,

Morelli³

et al. 2017

AIP Conference Proceedings

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Abstract.Monitoring the gap between the pressure tube (PT) and the calandria tube (CT) in CANDU ® fuel channels is essential, as contact between the two tubes can lead to delayed hydride cracking of the pressure tube. Multifrequency transmit-receive eddy current non-destructive evaluation is used to determine this gap, as this method has different depths of penetration and variable sensitivity to noise, unlike single frequency eddy current non-destructive evaluation. An Analytical model based on the Dodd and Deeds solutions, and a second model that accounts for normal and lossy selfinductances, and a non-coaxial pickup coil, are examined for representing the response of an eddy current transmit-receive probe when considering factors that affect the gap response, such as pressure tube wall thickness and pressure tube resistivity. The multifrequency model data was analyzed using principal components analysis (PCA), a statistical method used to reduce the data set into a data set of fewer variables. The results of the PCA of the analytical models were then compared to PCA performed on a previously obtained experimental data set. The models gave similar results under variable PT wall thickness conditions, but the non-coaxial coil model, which accounts for self-inductive losses, performed significantly better than the Dodd and Deeds model under variable resistivity conditions.

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Section: Principal Components Analysis Applied To Analytical Model Damentioning

confidence: 99%

Section: Principal Components Analysis Applied To Analytical Model Damentioning

confidence: 99%

Section: Principal Components Analysis Applied To Analytical Model Damentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Comparison of analytical eddy current models using principal components analysis

Contant¹,

Luloff²,

Morelli³

et al. 2017

AIP Conference Proceedings

View full text Add to dashboard Cite

show abstract

The Use of Projection Methods of Multivariate Analysis in Eddy Current Thickness Measurement

2019

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Resolution of effects in multi-frequency eddy current data for reliable diagnostics of conductive materials

Егоров

Kucheryavskiy

Polyakov

2017

Chemometrics and Intelligent Laboratory Systems

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Principal Components Analysis of Multifrequency Eddy Current Data Used to Measure Pressure Tube to Calandria Tube Gap

Cited by 27 publications

References 15 publications

Comparison of analytical eddy current models using principal components analysis

Comparison of analytical eddy current models using principal components analysis

The Use of Projection Methods of Multivariate Analysis in Eddy Current Thickness Measurement

Resolution of effects in multi-frequency eddy current data for reliable diagnostics of conductive materials

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