Efficient calculation of transient eddy current response from multi-layer cylindrical conductive media. (14th September 2020)

• Record Type: Journal Article
• Authors: Theodoulidis, Theodoros; Skarlatos, Anastassios
• Is Part Of: Philosophical transactions. Volume 378:Number 2182(2020)
• Publication Date: 2020-09-14
• Subjects: eddy current testing -- well logging -- cylindrical media -- transient voltage calculation -- time response -- Laplace transform inversion; Physical sciences -- Periodicals; Engineering -- Periodicals; Mathematics -- Periodicals; 500
• DOI: 10.1098/rsta.2019.0588
• Languages: English
• ISSNs: 1364-503X

Abstract

Abstract : The transient response from a transmitter–receiver coil system inside a multi-layer cylindrical conductive configuration is obtained. The particular set-up applies to well logging as well as to eddy current tube testing. In this work, a number of improvements are presented to existing models for an efficient calculation of the induced voltage. These include: domain truncation, novel treatment of arbitrary number of layers in order to avoid computational overflows and efficient time response calculation. The latter is based on a combination of Laplace inversion techniques for short- and long-time transient responses. This article is part of the theme issue 'Advanced electromagnetic non-destructive evaluation and smart monitoring'.