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所属单位：能源与动力学院

发表刊物：Hangkong Dongli Xuebao

摘要：A continuous scanning laser Doppler vibration measurement method for three-dimensional operational deflection shape of a curved blade was proposed and applied to vibration test of a compressor blade. The image geometric transformation was introduced into the laser continuous scanning measurement, and a laser continuous scanning path algorithm capable of dealing with irregular geometries of curved blades was developed. The continuous scanning laser vibration test was applied to non-rectangular area, and its accuracy was verified by test. Based on this method, the approach for measuring three-dimensional operational deflection shape of curved blades was taken, and the coordinate decomposition principle of three-dimensional laser test was studied. The three-dimensional laser continuous scanning test was performed on a compressor blade and the first nine modes within 3600Hz were obtained. The correlation with the results from the commercial three-dimensional laser discrete scanning modal test was basically above 0.95, demonstrating the feasibility and accuracy of three-dimensional continuous scanning laser Doppler vibration test. The continuous scanning laser Doppler vibration measurement, with advantages of high spatial resolution, efficient and effective test, shows the practical value for further engineering application. © 2018, Editorial Department of Journal of Aerospace Power. All right reserved.

ISSN号：1000-8055

是否译文：否

发表时间：2018-12-01

合写作者：Li, Fan,臧朝平

通讯作者：臧朝平,范菊莉