GMR Sensor Utilization for PCB Inspection Based on the Eddy-Current Testing Technique
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概要
- 論文の詳細を見る
This paper proposes the utilization of a GMR sensor as a magnetic sensor of an eddy-current testing probe for the detection of defects in printed circuit boards. The proposed probe consists of a meander coil functioning as an exciting coil and a GMR sensor functioning as a magnetic sensor. The GMR sensor has the advantages of high sensitivity to low magnetic fields over a broad range of frequency and very small size, and is therefore very useful for detecting very small cracks in printed circuit boards by means of the eddy-current testing technique. This paper describes the structure of the proposed probe, the inspection principles, and the experimental results achieved with an eddy-current testing probe using a GMR sensor in comparison with one using a solenoid coil sensor.
- 社団法人日本磁気学会の論文
- 2004-02-01
著者
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Wakiwaka H.
Shinshu University
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Iwahara M.
Kanazawa University
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Yamada S.
Kanazawa University
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Iwahara M.
Institute Of Nature And Environmental Technology. Kanazawa Univ.
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Chomsuwan K.
Kanazawa University
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Chomsuwan K.
King Mongkut's University Of Technology Thonburi
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Iwahara M
Institute Of Nature And Environmental Technology. Kanazawa Univ.
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SHOJI S.
TDK Corporation
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Fukuda Y.
Kanazawa University
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Fukuda Y
Kanazawa University
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Yamada S.
Division Of Biological Measurement And Applications Kanazawa University
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