Comparison Of Pec And Sfec Nde Techniques

被引：28

作者：

Morozov, M. ^{[1
]}

Tian, G. Y. ^{[1
]}

Edgar, D. ^{[2
]}

机构：

[1] Newcastle Univ, Sch Elect Elect & Comp Engn, Newcastle Upon Tyne NE1 7RU, Tyne & Wear, England

[2] NDE Grp, QinetiQ, Farnborough GU14 0LX, Hants, England

来源：

NONDESTRUCTIVE TESTING AND EVALUATION | 2009年 / 24卷 / 1-2期

基金：

英国工程与自然科学研究理事会;

关键词：

nondestructive evaluation; pulsed eddy currents; swept frequency eddy currents; frequency domain; ELECTRICAL-CONDUCTIVITY; EDDY; FLAWS;

D O I：

10.1080/10589750802195543

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Eddy current testing is one of the most widely used Nondestructive Evaluation (NDE) techniques. The recent development of multiple frequency and Pulsed Eddy Current (PEC) NDE has demonstrated high potential for applications in quantitative NDE in terms of defect profiles, defect depths and 3D defect reconstruction in particular. This paper systematically investigates eddy current behaviour in the frequency domain. Two methods, Swept Frequency Eddy Current (SFEC) and PEC are comparatively studied with respect to their capability to discriminate among various test cases. It is demonstrated that using PEC we can discriminate among the upper and reverse surface slots, as well as various sample thicknesses, with resolution compatible to SFEC at single excitation cycle.

引用

页码：153 / 164

页数：12

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