The Proceedings of Mechanical Engineering Congress, Japan
Online ISSN : 2424-2667
ISSN-L : 2424-2667
2013
Session ID : G031031
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G031031 Direct-Current Electric Potential Field Analysis of Plate with Local Wall Thinning of Semi-Ellipsoidal Shape
Manabu NOHARANaoya TADAMakoto UCHIDA
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CONFERENCE PROCEEDINGS FREE ACCESS

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Abstract
The direct-current potential difference method (DC-PDM) is an inspection technique to evaluate defects in structures. Although the method needs large direct current and relatively large equipment, many studies on the applicability of DC-PDM to non-destructive inspection have been performed because of low cost, cheap, and good reproducibility of results. DC-PDM has been applied to evaluate general wall thinning. But very few papers deal with the application of DC-PDM to local wall thinning. In this study, approximated solution for electric potential field analysis of a semi-ellipsoidal wall thinning existing on the back surface of a conductive plate was proposed and its validity was examined by comparing with the results by finite element method. The approximated solution agreed with the finite element analysis.
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© 2013 The Japan Society of Mechanical Engineers
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