F-1109 2次元配列ホール素子と磁気レンズを用いた鋼板の欠陥検出(J25-3 欠陥・き裂)(J25 機械力学,材料力学,エンジン関連の計測技術)

概要

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The prototype of two-dimensional magnetic field measuring system was fabricated using a hundred hall sensors. The calibration of sensors was easily done and the measurement of magnetic distribution on the S45C specimen was obtained by the fabricated system. Though the penetrated hole was also detected when liftoff distance was nearly 0 mm, the sensitivity of detection of the hole was strongly influenced by liftoff. Furthermore, another S45C plate was attached on the back of the specimen to focus magnetic flux on the center of the specimen. The attachment of another plate, however, did not contribute on the improvement of the sensitivity of hole detection.
一般社団法人日本機械学会の論文
2001-08-22