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Shock and Vibration
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Shock and Vibration
/
2015
/
Article
/
Tab 3
/
Research Article
NC Machine Tools Fault Diagnosis Based on Kernel PCA and
-Nearest Neighbor Using Vibration Signals
Table 3
The values of threshold
of three fault classes.
Fault class
Threshold value
All tools normal (
)
16.35
Single tool wear (
)
20.19
Single tool gap (
)
19.75