红外热像检测的3D建模与1D建模的对比

刘颖韬; 郭兴旺; 郭广平

红外热像检测的3D建模与1D建模的对比

1.
北京航空材料研究院，北京100095
2.
北京航空航天大学机械工程及自动化学院，北京100083

详细信息

作者简介:
刘颖韬(1976-)，男，工程师，研究方向为红外热像检测。

中图分类号: TG115.28
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出版历程
- 收稿日期: 2010-04-07
- 刊出日期: 2011-02-09

Comparison of 3D and 1D Models in Infrared Thermographic Nondestructive Testing by Numerically Simulating

摘要

摘要: 3D模型常被简化为1D模型用于理论分析和定量评价缺陷。为了评估这种模型简化引入的误差，使用有限元法对两种3D模型及其简化后的1D模型进行仿真对比，得出以下结论：当其它条件相同时，不计材料导热的各向异性，热扩散率越高的材料中横向导热越明显，由三维模型简化为一维模型所带来的误差越大。通过对GFRP/NOMEX蜂窝样件进行试验发现，即使是对于热扩散率很低的复合材料，随着时间的延长，横向导热的影响也变得明显。所以利用简化的一维模型进行缺陷定量分析一定要考虑适用条件，并对引入的误差进行评估。
- 红外热像检测 /
- 计算机仿真 /
- 误差 /
- 有限元法
Abstract: For simplicity in theoretical analysis and quantitative calculation, 3D model is often simplified to 1D model. 3D and 1D models for 2 samples, one is a CFRP panel and another is an aluminum one, are built and calculated by FEM method. The results showed that influence of lateral heat diffusion was more serious in materials with greater thermal diffusivity. An experiment was carried out on a GFRP/NOMEX honeycomb panel. It was seen that lateral heat diffusion became obvious in materials with low thermal diffusivity as time goes by. In conclusion, error should be estimated before using 1D model instead of 3D model for simulation and analysis in infrared thermographic NDT.
- Infrared thermographic testing /
- Numerical simulation /
- Error /
- Finite element method

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参考文献(12)

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红外热像检测的3D建模与1D建模的对比

作者简介: 刘颖韬(1976-)，男，工程师，研究方向为红外热像检测。

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出版历程

Comparison of 3D and 1D Models in Infrared Thermographic Nondestructive Testing by Numerically Simulating

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出版历程

目录

作者简介:
刘颖韬(1976-)，男，工程师，研究方向为红外热像检测。