Optimal sampling for fast eddy current testing inversion by utilising sensitivity data. Issue 3 (1st May 2015)

• Record Type: Journal Article
• Authors: Gyimóthy, Szabolcs
• Is Part Of: IET science, measurement & technology. Volume 9:Issue 3(2015)
• Page Start: 235
• Page End: 240
• Publication Date: 2015-05-01
• Subjects: eddy current testing -- cracks -- inverse problems -- interpolation; adaptive sampling method -- simplex‐mesh refinement -- inverse problem solution -- nondestructive testing -- sensitivity data -- optimal sampling -- piecewise linear interpolation -- data retrieval -- crack reconstruction problem -- eddy current testing; Measurement -- Periodicals; Electrical engineering -- Periodicals; Electronics -- Periodicals; Nanotechnology -- Periodicals; Electromagnetism -- Periodicals; Medical instruments and apparatus -- Periodicals; 621.3
• DOI: 10.1049/iet-smt.2013.0166
• Languages: English
• ISSNs: 1751-8822

Abstract

Abstract : An adaptive sampling method based on simplex‐mesh refinement is proposed for creating a forward database that can facilitate the inverse problem solution in non‐destructive testing. The resulting mesh‐database is used as a generic interpolator of the forward problem. The available sensitivity data are utilised for obtaining an optimal sampling with respect to the piecewise linear interpolation applied for data retrieval. The resulting database provides guaranteed quality of approximation using a relatively few number of samples. The method is illustrated by a crack reconstruction problem of eddy current testing.