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红外锁相法涂层测厚数值模拟与分析

Numerical simulation and analysis of lock-in thermography for thickness measurement of coating

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摘要

在传热学基础上建立了涂层的三维瞬态导热模型,利用ANSYS仿真软件对施加有正弦规律变化热流密度的涂层试件进行有限元分析;运用两次加载、减法处理的方法有效克服了常量和环境因素带来的影响,然后讨论了数据拟合求相位的方法;改变加载频率,得到了多组涂层厚度与相位的定量关系曲线,从理论计算的角度揭示涂层厚度和相位及加载频率的定量关系;最后利用曲线中的线性线段,总结确定了涂层厚度与相位的定量关系,为利用锁相法对涂层厚度进行精确测量提供了理论依据。

Abstract

On the basis of the heat transfer, a three-dimensional heat conduction model was proposed. The coating applied sinusoidal variation of heat flux was analyzed using large-scale finite element analysis software ANSYS. The use of two loading and subtraction effectively overcome the effects brought about by the constant part and environmental factors. Then data fitting method for seeking phase was discussed. Changing loading frequency, multiple sets of the quantitative relationship curves were obtained. From the theoretical point of view, the relationship of the phase between the modulation frequency and thickness were revealed. Finally, using the linear stages in curves, the quantitative relationship between phase and thickness was identified. A theoretical basis for precise measurements of coating thickness using infrared lock-in method was provided.

Newport宣传-MKS新实验室计划
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中图分类号:TN219

所属栏目:红外技术及应用

基金项目:国家自然科学基金(51275518,51305447);陕西省自然科学基金(2013JM7021)

收稿日期:2014-05-05

修改稿日期:2014-06-10

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作者单位    点击查看

张金玉:第二炮兵工程大学,陕西 西安 710025
孟祥兵:第二炮兵工程大学,陕西 西安 710025
杨正伟:第二炮兵工程大学,陕西 西安 710025
王冬冬:第二炮兵工程大学,陕西 西安 710025
陶胜杰:第二炮兵工程大学,陕西 西安 710025

联系人作者:张金玉(mejyzhang@163.com)

备注:张金玉(1964-),男,副教授,研究生导师,博士后,主要从事热波无损检测、智能故障诊断方面的研究。

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引用该论文

Zhang Jinyu,Meng Xiangbing,Yang Zhengwei,Wang Dongdong,Tao Shengjie. Numerical simulation and analysis of lock-in thermography for thickness measurement of coating[J]. Infrared and Laser Engineering, 2015, 44(1): 0006

张金玉,孟祥兵,杨正伟,王冬冬,陶胜杰. 红外锁相法涂层测厚数值模拟与分析[J]. 红外与激光工程, 2015, 44(1): 0006

被引情况

【1】牛奕,马云,李明明,张英. 非金属材料红外无损检测的建模和数值分析. 红外技术, 2019, 41(3): 214-219

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