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�������պ����ѧѧ�� 2004, Vol. 30 Issue (04) :363-369    DOI:
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������1, Vavilov V2, ����ƽ3, ����4, ��ӱ�4*
1. �������պ����ѧ ��е���̼��Զ���ѧԺ, ���� 100083;
2. ����˹��ķ˹������ѧ Russia 634028, Tomsk, 28;
3. �������ղ����о�Ժ������ 100095;
4. �������պ����ѧ ��е���̼��Զ���ѧԺ, ���� 100083
Modeling and image processing in infrared thermographic NDT of composite materials
Guo Xingwang1, Vavilov V2, Guo Guangping3, Shao Wei4, Liu Yingtao4*
1. School of Mechanical Engineering and Automation, Beijing University of Aeronautics and Astronautics�� Beijing 100083, China;
2. Tomsk Polytechnic University, Russia 634028, Tomsk, 28;
3. Beijing Institute of Aeronautical Materials��Beijing 100095, Chin;
4. School of Mechanical Engineering and Automation, Beijing University of Aeronautics and Astronautics�� Beijing 100083, China

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Abstract�� Infrared thermographic non-destructive testing(IT NDT) was increasingly used in the inspection of composite materials due to large surface,rapid and noncontact testing capabilities. The modeling and thermal image processing of the IT NDT of carbon fibre reinforced plastic(CFRP) were researched here. A new mathematical model was proposed for the CFRP reference samples with Teflon inserts, and the simulation was carried out; The causes of the phenomenon that the temperature on defects appears colder than the background were analyzed; The discrepancy between the experimental and the expected results was overcome. Many advanced data processing methods in the inspection of CFRP samples were used to deal with the infrared image sequences. Several processing algorithms were statistically evaluated to demonstrate that the Fourier transformation and the correlation technique can provide the highest values of signal-to-noise ratio.
Keywords�� composite materials   mathematical models   image processing   infrared thermographic testing     
Received 2003-11-15;
Fund:

������Ȼ��ѧ����������Ŀ(50175003); ���տ�ѧ����������Ŀ(02G51050)

About author: ������(1964-),��,���ɺ�����,������, xingwangguo@buaa.edu.cn.
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������, Vavilov V, ����ƽ, ����, ��ӱ�.���ϲ��Ϻ���������Ľ�ģ������������[J]  �������պ����ѧѧ��, 2004,V30(04): 363-369
Guo Xingwang, Vavilov V, Guo Guangping, Shao Wei, Liu Yingtao.Modeling and image processing in infrared thermographic NDT of composite materials[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2004,V30(04): 363-369
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