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http://dx.doi.org/10.5139/JKSAS.2006.34.1.065

Thermal and Creep Analysis of an Exhaust Duct of Smart UAV with FGM  

Im, Jong-Bin (한국항공대학교)
Park, Jeong-Seon (한국항공대학교)
Yun, Dong-Yeong (한국항공우주연구원)
Lee, Jeong-Jin (한국항공대학교)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.34, no.1, 2006 , pp. 65-73 More about this Journal
Abstract
The high temperature occurs due to the combustion gas from engine in unmanned aerial vehicles (UAV). The high temperature may cause serious damages in UAV structure. The Functionally Graded Material (FGM) is chosen as a candidate material of the engine duct structure. A functionally graded material (FGM) is a two- component mixture composed by compositional gradient materials from one material to the other. In contrast, traditional composite materials are homogeneous mixtures, and involve compositions between the desirable properties of the component materials. Since significant proportions of an FGM contain the pure form of each material, the need for compromise is eliminated. The properties of both components can be fully utilized. Thermal stress analysis of FGM layers (20, 40, 60, 80 and 100) is performed in this paper. In addition, the creep behavior of FGM applied in duct structure of an engine is analyzed for better understanding of FGM characteristics.
Keywords
Functionally Graded Material; Creep Analysis; Unmanned Aerial Vehicle; Thermal Stress;
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