交流誘起プローブによる強磁性体の欠陥検出・評価
英字タイトル:
Low-Frequency Electromagnetic Testing of Cracks in Ferromagnetic Structures
著者:
程 衛英 Weiying CHENG
発刊日:
公開日:
depth sizingeddy current effectelectromagnetic nondestructive testingmagnetic flux leakagephase angle
Low-Frequency Electromagnetic Testing of Cracks in Ferromagnetic Structures
著者:
程 衛英 Weiying CHENG
発刊日:
公開日:
カテゴリ: 第13回
キーワードタグ:depth sizingeddy current effectelectromagnetic nondestructive testingmagnetic flux leakagephase angle
概要
In the low-frequency electromagnetic nondestructive testing of cracks in ferromagnetic structures, both the magnetic flux leakage and eddy current perturbation coexist and the pickup signal is the combination of the two effects: signals arise from flux leakage effects when the crack orients transversal to the flux, and signals arise from eddy current perturbation when the crack orients transversal to the eddy currents. Numerical simulations are carried out to analyze the signals and the phase angles of the signals are applicable to the depth sizing.
