대한전자공학회:학술대회논문집 (Proceedings of the IEEK Conference)
- 대한전자공학회 2006년도 하계종합학술대회
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- Pages.359-360
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- 2006
DCT 기반의 자기 누설 신호 분석을 통한 가스 배관에서의 결함 신호 특징 추출
DCT based Magnetic Flux Leakage Analysis for Defect Feature Extraction of Gas Pipelines
- Han, Byung-Gil (School of Electrical Engineering & Computer Science, Kyungpook National University) ;
- Park, Gwan-Soo (Pusan National University) ;
- Yoo, Hui-Ryong (KOGAS) ;
- Rho, Young-Woo (KOGAS) ;
- Choi, Doo-Hyun (School of Electrical Engineering & Computer Science, Kyungpook National University)
- 발행 : 2006.06.21
초록
Magnetic Flux Leakage (MFL) methods are widely employed for the non-destructive testing of gas pipelines. In the application of MFL pipeline inspection technology, corrosion anomalies are detected and identified via their leakage filed due to changes in wall thickness. This paper presents discrete cosine transform (DCT) based MFL signal analysis for defect feature extraction of natural gas pipelines. The original MFL signals are transformed into new ones based on the analysis. The usefulness of the approach has been shown by the experimental results.
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