摘要: |
利用Ansys对玻璃纤维和高硅氧层压板脱粘缺陷的脉冲热像检测法进行数值模拟,分析缺陷参数(缺陷直径)对信息参数(最大温差等)的影响,并比较两种材料的区别。结果表明,最大温差和最大对比度与缺陷直径均呈正非线性关系。并用脉冲热像实验进行对比,验证了信息参数规律的正确性;并比较得出同等条件下,两种材料都检测出部分缺陷,检测难易程度相当。 |
关键词: 复合材料;脱粘;数值模拟;脉冲热像法;无损检测 |
基金项目: |
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Infrared Nondestructive Testing of Composites Debonding Defects and Numerical Simulation |
Xu Xin
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School of Mechanical Engineering and Automation, Beihang University, Bejing 100191
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Abstract: |
The Ansys finite element software is used to simulate the pusled thermography of glass fiber laminate and high silica lamina, which analyze the influences of defect parameters (defects diameter) on information parameters (the biggest temperature difference) and the differences between the two kinds of materials. The results show that maximum temperature difference and maximum contrast is a positive nonlinear relationship with defects diameter. Comparison is performed by pusle thermal experiments to verify the correctness of information parameters law. Besides, some defects of the materials are detected through the experiments and the detect difficulty is similar. |
Key words: composite material;debond;numerical simulation;pusle infrared thermography;nondestructive testing |