B-Spline Sparse Grids for Eddy-Current Testing Inverse Problems

Bilicz, Sándor and Pávó, József (2018) B-Spline Sparse Grids for Eddy-Current Testing Inverse Problems. In: 22nd International Workshop on Electromagnetic Nondestructive Evaluation (ENDE 2017), 2017.09.06-2017.09.08., Saclay (France).


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A sparse grid surrogate model using hierarchical B-spline basis functions is used to approximate the objective function in an optimization-based inversion algorithm. The B-spline basis provides a smooth interpolant of the objective function and the gradient of the interpolant is readily available in closed-form. The latter is used in a gradient-based minimum search algorithm that results in the approximate solution of the inverse problem. The method is computationally more efficient than using gradient-free direct search methods, as illustrated by an example drawn from eddy-current nondestructive testing.

Item Type: Conference or Workshop Item (Paper)
Subjects: T Technology / alkalmazott, műszaki tudományok > TK Electrical engineering. Electronics Nuclear engineering / elektrotechnika, elektronika, atomtechnika
Depositing User: Dr. Sándor Bilicz
Date Deposited: 24 Sep 2018 12:44
Last Modified: 24 Sep 2018 12:48

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