Fault pattern oriented defect diagnosis for memories

2004 ◽  
Author(s):  
Chih-Wea Wang ◽  
Kuo-Liang Cheng ◽  
Jih-Nung Lee ◽  
Yung-Fa Chou ◽  
Chih-Tsun Huang ◽  
...  
Keyword(s):  
Fault Pattern ◽  
Defect Diagnosis

Investigation of the 1867 Lesbos (NE Aegean) earthquake fault pattern based on soil-gas geochemical data

1999 ◽  
Vol 308 (1-2) ◽  
pp. 249-261 ◽  
Author(s):  
M. Fytikas ◽  
S. Lombardi ◽  
M. Papachristou ◽  
S. Pavlides ◽  
N. Zouros ◽  
...  
Keyword(s):  
Soil Gas ◽  
Geochemical Data ◽  
Earthquake Fault ◽  
Fault Pattern

Intelligent Gear Fault Identification Method Based on Harmonic Wavelet Package Energy Distribution and Grey Incidence

2013 ◽  
Vol 694-697 ◽  
pp. 1155-1159
Author(s):  
Wen Bin Zhang ◽  
Yan Ping Su ◽  
Yan Jie Zhou ◽  
Ya Song Pu
Keyword(s):  
Energy Distribution ◽  
Fault Identification ◽  
Morphological Filter ◽  
Original Signal ◽  
Energy Distributions ◽  
Vibration Signals ◽  
Fault Pattern ◽  
Gear Fault ◽  
Harmonic Wavelet ◽  
Gear Fault Diagnosis

In this paper, a novel intelligent method to identify gear fault pattern was approached based on morphological filter, harmonic wavelet package and grey incidence. At first, the line structure element was selected for morphological filter to denoise the original signal. Secondly, different gear fault signals were decomposed into eight frequency bands by harmonic wavelet package in three levels; and energy distribution of each band was calculated. Finally, these energy distributions could serve as the feature vectors, the grey incidence of different gear vibration signals was calculated to identify the fault pattern and condition. Practical results show that this method can be used in gear fault diagnosis effectively.

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