Evaluating delamination at entry of drilled carbon fiber reinforced polymer (CFRP) composite with diamond coated ball nose drills
This paper presents the investigation of the influence of machining parameters on delamination at entry of drilled holes after drilling into CFRP composite using 4 mm-diameter 2- fluted carbide drills coated diamond. The delamination at tool entry was analyzed in terms of delamination factor on t...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Trans Tech Publications, Switzerland
2015
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| Subjects: | |
| Online Access: | http://irep.iium.edu.my/43865/ http://irep.iium.edu.my/43865/ http://irep.iium.edu.my/43865/1/6.AMR.1115.64.pdf |
| Summary: | This paper presents the investigation of the influence of machining parameters on
delamination at entry of drilled holes after drilling into CFRP composite using 4 mm-diameter 2-
fluted carbide drills coated diamond. The delamination at tool entry was analyzed in terms of
delamination factor on the basis of analysis of variance (ANOVA) of Central Composite Design
(CCD) of experiments. It is found that spindle speed is the most influential factor for the drilling of
CFRP within the range of cutting parameters examined. The lowest delamination factor (1.006) was
generated at rotational speed, 4400 rpm and feed rate, 270 mm/min; and the highest delamination
factor (1.123) generated at rotational speed, 537 rpm and feed rate, 180 mm/min. A mathematical
model has been predicted for the delamination at tool entry. The relationship between the
machining variables and output variables is also established |
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