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Mathematical Problems in Engineering
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Mathematical Problems in Engineering
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2020
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Article
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Tab 2
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Research Article
Wear Identification of Vibration Drilling Bit Based on Improved LMD and BP Neural Network
Table 2
Classification of bit wear.
Tool condition
Initial wear
Normal wear
Severe wear
V
B
/mm
0–0.05
0.05–0.15
≥0.15