Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/2896
標題: 熱影像訊號重建法結合模糊專家系統用於碳纖維複合材料平板缺陷檢測上
CFRP defect detection by using thermographic singnal reconstruction method and fuzzy expert system
作者: 葉書佑
Yeh, Shu-Yu
關鍵字: 碳纖維複合材料;Carbon Fiber Composite Materials;脈衝波熱影像法;熱影像訊號重建法;Pulsed Thermography;Thermography Signal Reconstruction
出版社: 機械工程學系所
引用: [1] Ducar, R. J., “Pulsed thermographic inspection and application in commercial aircraft repair,” In Proceedings SPIE, 3700, 77–83, 1999. [2] Maldague, X. P. and Marinetti, S., “Pulse phase infrared thermography,” J. Appl. Phys., 79, 5, 2694–2698, 1996. [3] Cooley, J.W. and Tukey, J.W., “An algorithm for the machine calculation of complex Fourier series,” Math. Computer, 19, 90, 297–301, 1965. [4] Ibarra-Castanedo, C. and Maldague, X., “Interactive methodology for optimised defect characterization by quantitative pulsed phase thermography,” Res. Nondestruct. Eval., 16, 4, 1–19, 2005. [5] Maldague, X., “Theory and Practice of Infrared Technology for Nondestructive Testing,” John Wiley-Interscience , 2001. [6] Pilla, M., Klein, M., Maldague, X. and Salerno, A., “New absolute contrast for pulsed thermography,” In Proceedings of QIRT, 53-58, 2002. [7] Shepard, S. M., Lhota, J. R., Rubadeux, B. A., Ahmed, T. and Wang, D., “Enhancement and reconstruction of thermographic NDT data,” In Proceedings SPIE, 4710, 531–535, 2002. [8] Shepard, S. M., Lhota, J. R., Rubadeux, B. A., Wang, D. and Ahmed, T., “Reconstruction and enhancement of active thermographic image sequences,” Opt. Eng., 42, 5, 1337-1342, 2003. [9] Pan, Y. C., Chu, T. C., “Intelligent non-destructive evaluation expert system for carbon-carbon composites using infrared thermography,’’ Thermomechanics and Infra-Red Imaging, 7, 91-98, 2011. [10] Carslaw, H. S., Jaeger, J. C., “Conduction of Heat in Solids,” Oxford University Press, USA, 1986. [11] Ibarra-Castanedo, C., Genest, M., Servais, P., Maldaguea, X. P. and Bendada, A., “Qualitative and quantitative assessment of aerospace structures by pulsed thermography,’’ Nondestructive Testing and Evaluation, 22, 2, 199-215, 2007. [12] 蘇木春、張孝德,「類神經網路、模糊系統以及基因演算法則」,全華圖書股份有限公司,2012。 [13] Srinivas, K., Siddiqui, A. O., Lahiri, J., “Thermographic inspection of composite materials,” Proc. National Seminar on Non-Destructive Evaluation , Dec. 7-9, 2006.
摘要: 
本論文使用脈衝波熱影像法,因所拍攝影像數量大不便於攜帶,利用熱影像訊號重建法的多項式擬合方式重建所需的影像,因只保留擬合值所以能節省儲存空間(本文中約節省7倍儲存空間),而脈衝波熱影像法亦容易受環境影響而產生不必要的雜訊,影響人為的判斷,所以本文再結合模糊專家系統使其加強影像對比度、抑制雜訊;碳纖維複合材料平板上在航太上廣泛的運用,所以本文在模擬和實驗上的試片,使用碳纖維複合材料平板而在內部各別放置尺寸大小不同、深度不同之鐵氟龍、離心膜、離心紙三種材料當缺陷,因碳纖維複合材料平板製造過程中可能殘留離心膜及離心紙,而鐵氟龍主要是要來模擬物體內部有異物或脫層。以缺陷為離心紙為例,在模擬結果上,經模糊專家系統處理後對比度比處理前增加1.7倍,在實驗結果上,經模糊專家系統處理後對比度比處理前增加1.4倍,可以看到結合熱影像訊號重建法和模糊專家系統,不僅可以節省所需要的空間,方便攜帶及處理,亦能提升影像的對比度,降低人為判斷上的誤差。

Pulsed thermographic method refers to the nondestructive testing of parts, materials or systems through monitoring the thermal patterns at the object''s surface. However, it takes lots of memories and produces more noises than expected to work through this method. Two solutions are proposed here to solve this problem. One is using the thermography signal reconstruction method via polynomial fitting way to reshape the raw images, by which the memories needed can be save up to about 70%, the other is using fuzzy expert system to further enhance image contrast and to suppress image noises. Three types of defects (Teflon, Polyester and paper) are buried into the carbon fiber composite plates to simulate material defects, of which polyester and paper flaws are usually residual in the bad processes of carbon fiber composite and Teflon defect behaves as material delamination. Take paper flaw as an example, using the presents study, the image contrast can enhance 1.7 and 1.4 times respectively for the numerical simulation and experimental techniques. The proposed method proves its effectiveness both for simulation and experimental works.
URI: http://hdl.handle.net/11455/2896
其他識別: U0005-0308201216252600
Appears in Collections:機械工程學系所

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