Nondestructive Evaluation for Sandwich Composite Material

• Main Authors: Gu,Rong-Yao, 古榮耀
• Other Authors: Su,Sheng-Zhu
• Format: Others
• Language: zh-TW
• Published: 2012
• Online Access: http://ndltd.ncl.edu.tw/handle/98414161263548416529

碩士 === 中華科技大學 === 飛機系統工程研究所在職專班 === 100 === ABSTRACT In this study, take composite materials as sample; evaluate the reliability of non-destructive testing and certification. Use the thermal imaging method to exam its internal defects by heat transfer characteristics of sandwich composite material. The detection method is to use an instantly heating device adding on a composite material, as well as infra-red thermal imaging apparatus. The infrared issued by the observation of the thermal imaging, from it can be identified by the detection of composite materials within the defects and normal area. With a simple, fast, economic, checking the location is less restricted and immediately review the composite defects can be achieved. Besides, it can be safety upgrading and checking business-driven applied to composites structural. On the other hand, this article and take advantage of digital imaging in Omni-directional image synthesis and processing of, was reversed by original material difficult to analyze, measure, you can try this method and system, more real-time and accurate results, significantly shortened testing time. Furthermore, through real-time dynamic or static images more shooting, more detailed analysis of the material in each of the torsion angles of rotation or when you each time, marked changes in the material above and through computerized fast calculation of real-time results. Not only on the material test can be applied in the future, but can be used for load monitoring, that is, through a change of control material marking on the surface of, warning may have been closer to the yield point of the material. Keywords: sandwich structure,non-destructive inspection, thermal image, image analysis, full range image.