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    题名: A Study of Crack Growth on the Rotating Metallic Blade
    作者: Wang, Yi-ren;Tsao, Tseng-hwa
    贡献者: 淡江大學航空太空工程學系
    关键词: Crack Growth;Fracture;Rotating Beam;Aerodynamic Force;Helicopter Rotor Blades
    日期: 2001-09
    上传时间: 2013-03-20 16:24:08 (UTC+8)
    出版者: 臺北縣:淡江大學
    摘要: In this research, the mixed mode fracture of a pair of highly rotating metallic blades has been investigated at room temperature driven by a 220 volt AC motor and the rotating speed is fixed at 850 driven by a 220 volt AC motor and the rotating speed is fixed at 850 rpm. The notch is located in various blade positions from blade root to tip. The correlation of notch cracks at blade leading edge and trailing edge is also studied. A simple theoretical model of a flapping Bernoulli-Euler-Beam like rotor blade model is established for annalistic study. The experimental results show that the cracks grow faster in the case of the rotor blade with higher pitch angle. The analytic study of blade flapping motion also shows the importance of the aerodynamic force in rotating machines. It is suggested that the aerodynamic force should be included is solving the rotating fracture problems.
    關聯: Tamkang Journal of Science and Engineering=淡江理工學刊 4(3),頁173-182
    DOI: 10.6180/jase.2001.4.3.04
    显示于类别:[航空太空工程學系暨研究所] 期刊論文

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