電磁逆解析に基づく複雑形状部材中の表面欠陥評価
英字タイトル:
Evaluation of Surface Defect on ComplexShapedComponentBased on Electromagnetic Inverse Analysis
著者:
中住 昭吾 Shogo NAKASUMI 鈴木 隆之 Takayuki SUZUKI
発刊日:
公開日:
defectfluxgate magnetic sensorinverse analysismagnetic flux leakage techniquenon-destructive evaluationTikhonov regularization technique
Evaluation of Surface Defect on ComplexShapedComponentBased on Electromagnetic Inverse Analysis
著者:
中住 昭吾 Shogo NAKASUMI 鈴木 隆之 Takayuki SUZUKI
発刊日:
公開日:
カテゴリ: 第10回
キーワードタグ:defectfluxgate magnetic sensorinverse analysismagnetic flux leakage techniquenon-destructive evaluationTikhonov regularization technique
概要
Defect in a stud bolt was evaluated by using fluxgate (FG) magnetic sensor. In order to analyze defect shape and size quantitatively, the relationship between magnetic flux densities and magnetic dipole moment on the defect plane was formulated in cylindrical coordinate system. Periodicity was observed alonglongitudinal direction in magnetic flux density distribution measured by fluxgate magnetic sensor. The inverse analysis based on Tikhonov regularization technique was performed by using magnetic flux densities around the defect. The shape and size of reconstructed defect obtained by the inverse analysis were almost consistent to the original one.
