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International Journal of Polymer Science
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International Journal of Polymer Science
/
2018
/
Article
/
Tab 2
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Research Article
Investigation of Drilling Parameters Using Grey Relational Analysis and Response Surface Methodology of Biaxial Glass Fibre Reinforced with Modified Epoxy Resin Composite
Table 2
Different control parameters and their levels.
Control parameter
Unit
Level 1
Level 2
Level 3
Thickness
mm
2
ā
3
Drill bit
ā
1
2
3
Feed
mm/min
0.05
0.1
0.15
Speed
rpm
800
1000
1200