Kou kouzou rombunshuu
Online ISSN : 1884-0329
Print ISSN : 1880-9928
A TRIAL ON IMPROVEMENT OF FATIGUE CRACK-DETECTION OF EDDY CURRENT TEST BY APPLYING C-SCOPE IMAGING
Yusuke KOTOTakuyo KONISHIChitoshi MIKIHidehiko SEKIYA
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JOURNALS FREE ACCESS

2016 Volume 23 Issue 92 Pages 92_21-92_30

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Abstract

In steel bridge, fatigue cracks are generally detected by magnetic particle test (MT). MT inspection is ineffective and cost consuming compared with other NDT such as eddy current test (ET). The cost reduction and efficiency of inspection can be achieved if fatigue cracks are detected using ET. It is one of the problems for ET that the accuracy of detection at weld zone decreases due to irregular beads noise. In addition, detection reliability of ET is inferior to MT because in ET inspection, inspector judges existence of flaw from change of eddy current signal in complex plane. In this study, the performance of ET was improved by converting detection signals to C-scope image by using position information.

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© 2016 Japanese Society of Steel Construction
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