Development of Scanning Acoustic Microscopy System for Evaluating the Resistance Spot Welding Quality

IF 1 4区材料科学 Q3 MATERIALS SCIENCE, CHARACTERIZATION & TESTING Research in Nondestructive Evaluation Pub Date : 2022-05-04 DOI:10.1080/09349847.2022.2073415

Van Hiep Pham, T. H. Vo, Dinh Dat Vu, Jaeyeop Choi, Sumin Park, Doan Thong Nguyen, Byeong-il Lee, Jung-Mook Oh

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引用次数: 2

Abstract

ABSTRACT Scanning acoustic microscopy (SAM) system (TSAM-400) was designed and developed for evaluating the quality of resistance spot welding (RSW) joints of 1.5 mm-thick SUS 316 stainless steel sheets under different welding parameters. Indentation and nugget information (diameter and shape) were used for evaluating the RSW quality. SAM A-scan signals were used to calculate the indentation. The nugget diameter was determined in the C-scan image. Internal information (nugget shape, splashes, and defects) was visualized in the B- and C-scan images. In addition, the spot weld area was treated to examine the surface topography effect. The nugget diameters of treated and untreated areas were measured and compared to conclude that the surface topography effect can be neglected in the quality evaluation by SAM system. By implementing TSAM-400, some specimens were successfully tested with a scanning area of 55 × 15 mm2, and a scanning time of 33.5 s corresponding to a B-scan frame rate of 4.5 Hz, and a resolution of 0.1 × 0.1 mm2. Finally, the good input parameters for welding two 1.5 mm-thick SUS 316 were determined by analyzing the results from TSAM-400.

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电阻点焊质量评价扫描声显微系统的研制

设计并开发了扫描声显微镜(SAM -400)系统，用于评价不同焊接参数下1.5 mm厚SUS 316不锈钢板电阻点焊(RSW)接头的质量。压痕和核块信息(直径和形状)用于评价RSW质量。采用SAM a扫描信号计算压痕。在c扫描图像中确定了熔核的直径。内部信息(金块形状，飞溅和缺陷)在B和c扫描图像中可视化。此外，还对点焊区进行了表面形貌处理。通过对处理区和未处理区熔核直径的测量和比较，得出了在采用SAM系统进行质量评价时可以忽略表面形貌影响的结论。采用TSAM-400对部分样品进行了扫描，扫描面积为55 × 15 mm2，扫描时间为33.5 s，对应的b扫描帧率为4.5 Hz，扫描分辨率为0.1 × 0.1 mm2。最后，通过对TSAM-400测试结果的分析，确定了焊接两个1.5 mm厚SUS 316的最佳输入参数。

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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.