Three-Dimensional Reconstruction of Complex Defects in Thin Steel Strips with the Imaging Method of Magnetic Field Distortion

IF 1 4区材料科学 Q3 MATERIALS SCIENCE, CHARACTERIZATION & TESTING Research in Nondestructive Evaluation Pub Date : 2021-11-02 DOI:10.1080/09349847.2021.2019357

Hengtao Li, Xiucheng Liu, Jiaying Zhang, Chang-song Wang, Bin Wu, C. He

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Abstract

ABSTRACT In the study, the three-dimensional (3D) morphology of defects in thin steel strips with a thickness of 0.8 mm was determined with the imaging method of magnetic field distortion (MFD). First, MFD imaging of through-wall defects and wall-thinning defects in the samples collected from inline products was performed in our laboratory. The actual profiles of the defects were measured with a digital microscope. Second, MFD imaging results were compared with the actual shapes of the defects in order to develop a proper 3D reconstruction method of complex defects. Finally, the analysis results demonstrated that the high reconstruction accuracy of opening contours of complex defects could be realized with the carefully selected threshold value of MFD-induced voltage amplitude. The good linear dependency of MFD-induced voltage amplitude on the depth of complex wall-thinning defects was confirmed. Therefore, MFD imaging method is a promising method for accurately reconstructing 3D shape of complex wall-thinning defects in thin steel strips.

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磁场畸变成像法在薄钢带复杂缺陷三维重建中的应用

摘要采用磁场畸变成像(MFD)方法，对厚度为0.8 mm的薄钢带中缺陷的三维形貌进行了研究。首先，在我们的实验室中对从在线产品中收集的样品中的穿壁缺陷和壁薄缺陷进行了MFD成像。用数码显微镜测量了缺陷的实际轮廓。其次，将MFD成像结果与缺陷的实际形状进行比较，以建立适合复杂缺陷的三维重建方法。最后，分析结果表明，精心选择的mfd感应电压幅值阈值可以实现复杂缺陷的高开口轮廓重建精度。验证了mfd诱导电压幅值与复杂壁薄缺陷深度的良好线性关系。因此，MFD成像方法是一种很有前途的方法，可以精确地重建薄钢带中复杂壁薄缺陷的三维形状。

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来源期刊

Research in Nondestructive Evaluation 工程技术-材料科学：表征与测试

CiteScore

2.30

自引率

0.00%

发文量

审稿时长

>12 weeks

期刊介绍： Research in Nondestructive Evaluation® is the archival research journal of the American Society for Nondestructive Testing, Inc. RNDE® contains the results of original research in all areas of nondestructive evaluation (NDE). The journal covers experimental and theoretical investigations dealing with the scientific and engineering bases of NDE, its measurement and methodology, and a wide range of applications to materials and structures that relate to the entire life cycle, from manufacture to use and retirement. Illustrative topics include advances in the underlying science of acoustic, thermal, electrical, magnetic, optical and ionizing radiation techniques and their applications to NDE problems. These problems include the nondestructive characterization of a wide variety of material properties and their degradation in service, nonintrusive sensors for monitoring manufacturing and materials processes, new techniques and combinations of techniques for detecting and characterizing hidden discontinuities and distributed damage in materials, standardization concepts and quantitative approaches for advanced NDE techniques, and long-term continuous monitoring of structures and assemblies. Of particular interest is research which elucidates how to evaluate the effects of imperfect material condition, as quantified by nondestructive measurement, on the functional performance.