Results 31 to 40 of about 15,235 (310)
Blade Crack Diagnosis Based on Blade Tip Timing and Convolution Neural Networks
Applied Sciences, 2023 The diagnosis of blade crack faults is critical to ensuring the safety of turbomachinery. Blade tip timing (BTT) is a non-contact vibration displacement measurement technique, which has been extensively studied for blade vibration condition monitoring ...
Guangya Zhu +5 more
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International Journal of Naval Architecture and Ocean Engineering, 2022 The hydrodynamic damping characteristics of elastic rotating propeller blades are investigated theoretically and experimentally. Firstly, the modal hydrodynamic damping ratio of propeller blade rotating in water is theoretically predicted based on the ...
Hongyang Chen +3 more
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Vibrations of a Rotating Blade
The Journal of the Japan Society of Aeronautical Engineering, 1956 The bending vibrations of a rotating blade were investigated by some authors. But, as in the aerofoil seetion the centre of gravity and the centre of twist do not coincide the coupling of bending and twisting vibrations occurs necessarily.In the present investigation the frequencies of the above mentioned coupled vibrations of a rotating blade which ...
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Jin'gangshi yu moliao moju gongcheng, 2022 To solve the problems of low efficiency and poor uniformity in polishing blisk, a rotary-assisted horizontal vibration mass finishing process was adopted.
Zhicheng WANG +4 more
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Vibration Test of Blade Disc of High Pressure Turbine in High Rotating Speed
Hangkong gongcheng jinzhan, 2021 In the high-speed rotating state, the experimental study on the vibration characteristics of high-pressure turbine rotor blade and the vibration reduction effect of flange damping device is beneficial to the later design iteration and obtain the real ...
LUO Li, HUANG Dayong
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A Blade Dynamic Strain Inversion Method for Rotating Blades Based on Blade Tip Timing
Journal of Physics: Conference Series, 2021 Abstract Based on the vibration response transfer ratio and Natural Neighbor Interpolation (NNI), the research on the noncontact inversion method of dynamic strain of high-speed rotating blades is carried out. The high-speed rotating blade is analyzed through the motion equation, and the correction method of the transfer ratio is ...
Haonan Guo +6 more
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Low‐Angle Grain Boundaries and Re‐Segregation in Single‐Crystalline Ni‐Base Superalloys
Advanced Engineering Materials, EarlyView.This work demonstrates that Re‐segregation at low‐angle grain boundaries (LAGBs) in Ni‐base superalloys is influenced by misorientation angle. Advanced microscopy and atom probe tomography reveal that higher misorientation angles increases Re‐segregation.
Alireza B. Parsa +9 more
wiley +1 more source
The cutting behaviour observation of the artificial hair by oscillation and rotation shaver
Nihon Kikai Gakkai ronbunshu, 2016 The shaver is a popular electronic utility for male to cut their beard, hair and so on. It is roughly divided two shaving system as oscillating or rotating motion of an inner blade.
Takayuki TOKOROYAMA +2 more
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Blade dynamic stress analysis of rotating bladed disks [PDF]
Applied and Computational Mechanics, 2007 The paper deals with mathematical modelling of steady forced bladed disk vibrations and with dynamic stress calculation of the blades. The blades are considered as 1D kontinuum elastic coupled with three-dimensional elastic disk centrally clamped into rotor rotating with constant angular speed.
Kellner, Josef, Zeman, Vladimír
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Performance Analysis of Abradable Coating Systems for Aircraft Gas Turbines
Advanced Engineering Materials, EarlyView.Three CoNiCrAlY/YSZ/MgAl2O4 abradable liner configurations on a nickel‐superalloy are evaluated by thermal‐gradient cycling and incursion tests. Laser ablation of the bondcoat and/or Y2O3‐stabilized ZrO2 (YSZ) intermediate layer increases mechanical interlocking and bonding for thick topcoats.
Hanna Heyl +4 more
wiley +1 more source