Journal
JOURNAL OF COMPOSITE MATERIALS
Volume 46, Issue 25, Pages 3173-3180Publisher
SAGE PUBLICATIONS LTD
DOI: 10.1177/0021998312436997
Keywords
Drill geometry; drilling; glass fiber reinforced plastic; drilling forces
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Drilling is one of the most important method for hole making in composite materials. Drilling of polymer matrix composites causes substantial damage around the drilled hole. Damage free holes can be made using modified drill geometry. The present research investigation focuses on the drill geometry as candidate parameter that influence drilling forces and drilling-induced damage. The four different drill geometries (solid and hollow in shape) are used for drilling in composite materials. The cutting mechanism of these drill geometries is substantially different, and therefore influences the drilling-induced damage. The experimental results suggest a strong relationship between the drill point geometry and the drilling-induced damage.
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