Results 31 to 40 of about 11,806 (306)
Hangkong gongcheng jinzhan, 2018 It is of important significance to study the vibration characteristics and vibration suppression technology of aero-engine rotating blades to improve the engine performance, structural integrity and working reliability.
Qin Jie, Yan Qun, Huang Wenchao
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On The Vibration of a Cracked Rotating Blade [PDF]
Shock and Vibration, 1998 The dynamic behavior of a rotating blade containing a transverse crack was investigated. First, the local flexibility of the cracked blade was obtained by using the method of the released energy. An energy principle, in conjunction with a weighted residual method, was then applied to yield the discrete equations of motion.
Ming-Chuan Wu, Shyh-Chin Huang
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Nihon Kikai Gakkai ronbunshu, 2019 Selected from various Eigen modes of blading, nodal diameter κ= 0 and κ= 1 are both related to shaft torsional and/or axial vibration and shaft bending vibrations respectively.
Hiroki NAKAMURA +4 more
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Journal of Low Frequency Noise, Vibration and Active Control, 2021 In this paper, a synchronous vibration control method was proposed to avoid the high-cycle fatigue fracture of aeroengine rotor blade. Firstly. The harmonic force, causing synchronous vibration, was derived by Fourier series expansion by the mean of ...
Sanqun Ren +5 more
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Improved Blade Tip Timing in Blade Vibration Monitoring with Torsional Vibration of the Rotor
Journal of Physics: Conference Series, 2012 Due to the complex conditions in rotating machinery, the blades usually encounter fluctuating loads, and failures may occur in the operation. Blade vibration is rarely monitored in the practical rotating machinery in power plants as the traditional blade vibration method using strain gauge method is hard to be applied in long-time and online monitoring.
Chao Liu, Dongxiang Jiang
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Blade Serial Number Identification Based on Blade Tip Clearance without OPR Sensor
Shock and Vibration, 2021 Blade serial number identification is one of the key issues in blade tip-timing vibration measurement without once-per-revolution (OPR) sensor. In order to overcome the shortcomings of the existing blade serial number identification methods without OPR ...
Liang Zhang +3 more
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A study on the vibration dissipation mechanism of the rotating blade with dovetail joint
Journal of Low Frequency Noise, Vibration and Active Control, 2021 The vibration dissipation mechanism of the rotating blade with a dovetail joint is studied in this paper. Dry friction damping plays an indispensable role in the direction of vibration reduction.
Chaofeng Li +3 more
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Research on Online Monitoring of Crack Damage of Wind Turbine Blades Based on Working Modal Analysis
Zhongguo dianli, 2023 Since crack damage of wind turbine (WT) blades is easy to occur and difficult to find, online monitoring of blade crack damage is carried out by collecting and analyzing blade vibration signals.
Yuhui WU +6 more
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Wind Energy, 2023 The present work investigates the performance of different features, extracted from vibration‐based data, for structural health monitoring of a 52‐meter wind turbine blade during fatigue testing.
M. A. Fremmelev +5 more
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Resonance and Instability of Blade-Shaft Coupled Bending Vibrations with In-plane Blade Vibration
International Journal of Fluid Machinery and Systems, 2008 Abstract As a major component of a power plant, a turbine generator must have sufficient reliability. Longer blades have lower natural frequency, thereby requiring that the design of the shaft and blade takes into account the coupling of the blade vibration mode, nodal diameter k =0 and k =1 with vibration of the shaft.
Norihisa Anegawa +3 more
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