scholarly journals Axial Vibration Analysis of Thrust Support of Vertical Hydrogenerator Unit

2021 ◽  
Vol 276 ◽  
pp. 02020
Author(s):  
Yuanlin Long ◽  
Yuping Ye
Keyword(s):  
Vibration Analysis ◽  
Normal Function ◽  
Axial Vibration ◽  
Treatment Measures ◽  
Generator Unit ◽  
Real Machine

Axial vibration is the main accident that affects the normal function of the vertical hydro-generator unit and endangers the use of the unit. There are many reasons for the axial vibration of the unit. This article only analyzes the mechanism of the axial vibration of the thrust bracket of the vertical unit caused by the connection of the thrust head and the mirror plate, and gives a real machine measurement example and treatment measures.

Vibration Analysis of ID Slicing Process and Wafer Measurement

2006 ◽  
Vol 315-316 ◽  
pp. 641-645 ◽  
Author(s):  
Xin Wei ◽  
Rui Wei Huang ◽  
Shao Hui Lai ◽  
Z.H. Xie
Keyword(s):  
Surface Roughness ◽  
Power Spectrum ◽  
Vibration Analysis ◽  
Machining Accuracy ◽  
Radial Vibration ◽  
Total Thickness ◽  
Axial Vibration ◽  
Vibration Signals ◽  
Measurement And Analysis ◽  
Inner Diameter

ID (inner-diameter) slicing is widely used in cutting ingots currently. In this paper, the deflection (axial vibration) and vibration (radial vibration) signals in different slicing conditions of the silicon wafers were measured online and analyzed. The effects of the vibration signals on the machining accuracy and surface roughness of sliced wafers were investigated based on the measurement and analysis of the surface roughness, warpage and TTV (total thickness vibration) of the sliced wafers. The results show that the changes of surface roughness, warpage and TTV of the sliced wafers exhibit approximately consistence with the changes of the power spectrums of the acquired vibration signals in different working stage of the blade. The vibration and deflection signals can give evidence of the changes in the cutting forces and blade performance during slicing. The power spectrum of the signals is useful for monitoring the blade wear and tension condition and predicting the surface quality and machining accuracy of the sliced wafers.

Analysis of Turbines Vibration and Treatment Measures during the Commissioning

2012 ◽  
Vol 591-593 ◽  
pp. 2087-2090
Author(s):  
Guo Cheng Fang
Keyword(s):  
Steam Turbine ◽  
Vibration Analysis ◽  
Power Grid ◽  
Difficult Problem ◽  
Stable Operation ◽  
Safe Operation ◽  
Power Station ◽  
Treatment Measures ◽  
Solid Foundation ◽  
Shaft Vibration

The phenomenon of higher shaft vibration and higher bearing temperature is repeated happening during the starting of the 1 000MW coal fired unit of Suizhong power station, seriously endanger the safe operation of the unit, this article mainly aims at the difficult problem of this one technology, by researching on steam turbine work principle and vibration analysis, to find the reason of effect on stability, and to correct all unreasonable factors, to ensure the safe and stable operation of the unit, to laid solid foundation for the construction of the intelligent power grid.

Monitoring of fracture healing by lateral and axial vibration analysis

1990 ◽  
Vol 23 (4) ◽  
pp. 323-330 ◽  
Author(s):  
G. Nikiforidis ◽  
A. Bezerianos ◽  
A. Dimarogonas ◽  
C. Sutherland
Keyword(s):  
Fracture Healing ◽  
Vibration Analysis ◽  
Axial Vibration
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