| PRECISION INSTRUMENT |
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Simulation and feature extraction of eddy current tests for residual austenite content |
| HAN Zandong, LI Yongjie, LI Xiaoyang |
| State Key Laboratory of Tribology, Department of Mechanical Engineering, Tsinghua University, Beijing 100084, China |
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Abstract Residual austenite content in steel strongly influences the mechanical properties and thermal stability of the materials. Eddy current testing method is used to determine the residual austenite content in the steel since the relative permeability of the austenite phase, which is indicated by eddy current tests, is much smaller than that of the ferromagnetic phases. A finite element analysis method is used to simulate eddy current tests with samples having different relative permeabilities. The results show that the output signal of the alternating current (AC) bridge corresponds well with the relative permeability. The amplitude and phase of the output signal can be used as feature variables, which both having good linear correlation with the relative permeability that after processing. The residual austenite content can then be determined using the relationship between the austenite content and the relative permeability.
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| Keywords
eddy current testing
simulation
feature extraction
residual austenite
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Issue Date: 15 June 2016
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[1] 任吉林, 林俊明, 徐可北. 涡流检测 [M]. 北京: 机械工业出版社, 2013.REN Jilin, LIN Junming, XU Kebei. Eddy Current Testing [M]. Beijing: Mechanical Industry Press, 2013. (in Chinese)
[2] Zhao L, Van Dijk N H, Brück E, et al. Magnetic and X-ray diffraction measurements for the determination of retained austenite in TRIP steels [J]. Materials Science and Engineering: A, 2001, 313(1): 145-152.
[3] 于霞, 张卫民, 邱忠超, 等. 航空发动机涡轮叶片裂纹检测信号特征提取 [J]. 兵工学报, 2014, 35(8): 1267-1274.YU Xia, ZHANG Weimin, QIU Zhongchao, et al. Signal feature extraction of aero-engine turbine blade crack detection [J]. Acta Armamentarii, 2014, 35(8): 1267-1274. (in Chinese)
[4] Al-Qubaa A R, Tian G Y, Wilson J, et al. Feature extraction using normalized cross-correlation for pulsed eddy current thermographic images [J]. Measurement Science and Technology, 2010, 21(11), 115501.
[5] Rosado L S, Janeiro F M, Ramos P M, et al. Defect characterization with eddy current testing using nonlinear-regression feature extraction and artificial neural networks [J]. IEEE Transactions on Instrumentation and Measurement, 2013, 62(5): 1207-1214.
[6] 何赟泽. 脉冲涡流无损检测技术研究 [D]. 长沙: 国防科学技术大学, 2008.HE Yunze. Research on the Pulsed Eddy Current Nondestructive Technology [D]. Changsha: National University of Defense Technology, 2008. (in Chinese)
[7] 王春艳, 陈铁群, 张欣宇. 脉冲涡流检测技术的某些进展[J]. 无损探伤, 2005, 29(4): 1-4.WANG Chunyan, CHEN Tiequn, ZHANG Xinyu. Some progress on pulsed eddy current testing technology [J]. Nondestructive Test, 2005, 29(4): 1-4. (in Chinese)
[8] 吴化, 姜颖, 尤申申, 等. 超级贝氏体组织中残余奥氏体的 TRIP 效应研究 [J]. 机械工程学报, 2014, 50(22): 69-75. WU Hua, JIANG Ying, YOU Shenshen, et al. Study on TRIP effect of retained austenite in super-bainite microstructure [J]. Journal of Mechanical Engineering, 2014, 50(22): 69-75. (in Chinese)
[9] 任勇强, 谢振家, 尚成嘉. 低碳钢中残余奥氏体的调控及对力学性能的影响 [J]. 金属学报, 2012, 48(9): 1074-1080.REN Yongqiang, XIE Zhenjia, SHANG Chengjia. Regulation of retained austenite and its effect on the mechanical properties of low carbon steel [J]. Acta Metallurgica Sinica, 2012, 48(9): 1074-1080. (in Chinese)
[10] 张一, 张骥华, 徐祖耀. 钢中残余奥氏体的作用及其分析方法 [J]. 上海金属, 1983, 5(4): 33-40.ZHANG Yi, ZHANG Jihua, XU Zuyao. Effect and its analytical methods of retained austenite in steels [J]. Shanghai Metals, 1983, 5(4): 33-40. (in Chinese)
[11] 李晓阳, 韩赞东, 王柄方. 基于磁性法的钢中残余奥氏体含量测定方法与装置 [J]. 理化检验: 物理分册, 2014, 50(12): 882-889.LI Xiaoyang, HAN Zandong, WANG Bingfang. Measurement method and equipment of residual austenite content in steel based on magnetic method [J]. Physical Testing and Chemical Analysis Part A: Physical Testing, 2014, 50 (12): 882-889. (in Chinese)
[12] 张玉华, 李建增, 孙慧贤, 等. 影响磁导率测试的电磁检测探头设计因素分析 [J]. 传感器与微系统, 2013, 32(5): 47-50.ZHANG Yuhua, LI Jianzeng, SUN Huixian, et al. Analysis of design factors of electromagnetic probe effects on magnetic permeability measurement [J]. Transducer and Microsystem Technologies, 2013, 32(5): 47-50. (in Chinese)
[13] 孙金立, 袁英民, 陈新波. 放置式涡流检测传感器的设计与制作 [J]. 青岛大学学报: 自然科学版, 2002, 15(3): 70-74.SUN Jinli, YUAN Yingmin, CHEN Xinbo. Design and manufacture of point probe type eddy current test transducer [J]. Journal of Qingdao University: Natural Science Edition, 2002, 15(3): 70-74. (in Chinese) |
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2016,
Vol. 56
