基于脉冲涡流热成像的金属材料缺陷检测仿真
Simulation of Crack Detection on Metal Material Based on Eddy Current Thermography
摘 要
根据脉冲涡流检测过程所涉及的涡流场和温度场理论, 利用COMSOL4.4多物理仿真软件对金属铝材料进行缺陷检测仿真。分析了带有缺陷的铝材料表面的涡流和温度分布状况以及相关机理；并通过改变激励频率, 观察不同激励频率下材料表面的温度分布变化, 得出了激励频率对脉冲涡流加热的影响, 从而选取合适的激励频率对金属材料进行加热检测。
COMSOL软件
激励频率
金属材料
Eddy current heating
COMSOL software
The pulse excitation frequency
Metal material
Abstract
In this paper, the simulation model of detecting crack in aluminum material has been established based on the eddy current field theory and magnetic field theory. The problems of defect detecting in aluminum material were simulated by using the software of COMSOL4.4. The distribution and mechanism of eddy current and temperature near the surface of aluminum are analyzed. By observing the changing of the temperature near the surface with different frequencies, the research reveals that the relationship between excitation frequency of eddy current and the heating effect was found out and proper exciting frequency was used to heat the aluminum. Our research results have directive significance for nondestructive detecting.
中图分类号 TG115.28 DOI 10.11973/wsjc201603011
所属栏目 科研成果与学术交流
基金项目 山西省高等学校科技创新资助项目(2013138)
收稿日期 2015/7/8
修改稿日期
网络出版日期
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备注谢嘉麟(1990-),男,硕士,主要从事无损检测研究工作。
引用该论文: XIE Jia-lin,SUN Zhi-yi,YAN Xiao-mei,CUI Yun,SUN Qian-lai. Simulation of Crack Detection on Metal Material Based on Eddy Current Thermography[J]. Nondestructive Testing, 2016, 38(3): 41～46
谢嘉麟,孙志毅,闫晓梅,崔赟,孙前来. 基于脉冲涡流热成像的金属材料缺陷检测仿真[J]. 无损检测, 2016, 38(3): 41～46
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参考文献
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【3】REN Wen-wei, LIU Jia, TIAN Gui-yun, et al. Quantitative non-destructive evaluation method for impact damage using eddy current pulsed thermography［J］. Composites: Part B, 2013, 54: 169-179.
【4】HE Yun-ze,TIAN Gui-yun,PAN Meng-chun, et al. Impact evaluation in carbon fiber reinforced plastic(CFRP) laminates using eddy current pulsed thermography［J］.Composite Structures, 2014, 109: 1-7.
【5】HE Yun-ze, TIAN Gui-yun, PAN Meng-chun, et al. Non-destructive testing of low-energy impact in CFRP laminates and interior defects in honeycomb sandwich using scanning pulsed eddy current［J］. Composites: Part B, 2014, 59: 196-203.
【6】PAN Meng-chun, HE Yun-ze, TIAN Gui-yun, et al. Defect characterization using pulsed eddy current thermography under transmission mode and NTD applications［J］. NDT&E International, 2012, 52: 28-36.
【7】LIU Jia, TIAN Gui-yun, GAO Bin, et al. Investigation of thermal imaging sampling frequency for eddy current pulsed thermography［J］.NDT&E International, 2014, 62: 85-92.
【8】常东,左宪章,张云,等.脉冲涡流热成像的BEMD提升小波阈值去噪［J］.红外技术,2012,34(6): 346-350.
【9】田贵云, 左宪章, 常东.裂纹方向对脉冲涡流激励热成像的影响［J］.上海交通大学学报, 2013, 47(5): 785-799.
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【11】宋林, 杨随先, 李小建, 等.曲面零件裂纹缺陷脉冲涡流热成像检测的仿真［J］.无损检测, 2012,34(9): 39-41.
【12】胡德洲, 左宪章, 王建斌, 等.脉冲涡流热成像检测激励参数的优化［J］.无损检测, 2014,36(8): 23-28.
【13】张月红.感应加热温度场的数值模拟［D］.无锡: 江南大学, 2008: 14-16.
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