High frequency vibration analysis in drilling of GFRP laminates using candlestick drills

2018 ◽  
Vol 184 ◽  
pp. 742-758 ◽  
Author(s):  
Liping Liu ◽  
Feng Wu ◽  
Chunliang Qi ◽  
Tianshu Liu ◽  
Jing Tian
Keyword(s):  
High Frequency ◽  
Vibration Analysis ◽  
High Frequency Vibration

Research on Fault Diagnosis of Ship Stern Bearing Based on Vibration Analysis

2010 ◽  
Vol 139-141 ◽  
pp. 2354-2358
Author(s):  
Yong Jin ◽  
Lin Liu Zheng
Keyword(s):  
Fault Diagnosis ◽  
High Frequency ◽  
Vibration Analysis ◽  
Vibration Characteristics ◽  
Vibration Source ◽  
High Frequency Vibration ◽  
Rotary Machine ◽  
Vibration Data ◽  
Analysis Platform ◽  
Diagnostic Mode

The application of vibration analysis in fault diagnosis of rotary machine becomes more and more popular. Aiming at an abnormal high frequency vibration of a stern bearing, this paper proposed a method of fault diagnosis based on the analysis of vibration characteristics and the spectral analysis. From the gathered vibration data of a stern shaft bench through Pulse Vibration Analysis Platform, using the speed spectrum array to determine the characteristics of vibration source, with the analysis of vibration characteristics of the bench, it concluded that the abnormal high frequency vibration source of the stern bearing is a weak rigidity part of bench─ tacho-torque meter. The vibration data of again test after strengthening the part illustrated the validity of this diagnostic mode.

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