2022年9月4日早，课题组成果“Surface profile reconstruction of complex cracks using the signals of rotating eddy current testing through the eddy current imaging method”被仪器仪表学科和电气学科顶级杂志IEEE Transactions on Industrial Electronics（TIE）录用。该成果为南京航空航天大学自动化学院葛玖浩博士团队与日本东北大学量子能源工程游佐训孝教授团队共同研究成果，论文作者为胡宝旺（南航）、杨晨开（南航）、葛玖浩（南航、东北大）、俞帆纬（东北大）和游佐训孝（东北大），通讯作者葛玖浩。
论文提出一种基于电流偶极子的复杂裂纹表面轮廓反演新方法，可以无迭代和快速的得到复杂裂纹周围的电流图像进而实现其表面轮廓的反演。
论文具体摘要信息如下：
Surface profile reconstruction of complex cracks using the signals of rotating eddy current testing through the eddy current imaging method
Jiuhao Ge, Baowang Hu, Chenkai Yang, Fanwei Yu, and Noritaka Yusa
Abstract—In industry, natural cracks usually exist in complex forms such as adjacent, colony, irregular and crossing. Mere magnetic field is inadequate to accurately evaluate the complex cracks using eddy current testing. In this study, an improved eddy current imaging method using the signal of rotating eddy current testing was proposed to reconstruct the surface profile of complex cracks. A transformation method was adopted to transform the signals of rotating eddy current testing into those under uniform eddy current testing at the desired orientation. The deconvolution of the transformed signals and square current dipole was carried out to obtain eddy current images at eight orientations around complex cracks. By accumulating the eddy current images, the surface profile of the complex cracks was reconstructed. Simulations and experiments were carried out to illustrate, validate, and test the proposed method. The results indicated that the obtained surface profiles were clearer than those obtained by previous method using uniform eddy current testing. The improved method was effective for artificial complex slits and irregular stress corrosion crack colonies. Moreover, its performance was stable for the cracks with different angles and depths.
Index Terms—crack colony, stress corrosion crack, eddy current imaging, current dipole
葛玖浩
2022年9月4日
