An experimental and statistical study on the effect of drill geometries on force and hole quality in drilling of glass fibre reinforced plastic. (30th June 2008)

• Record Type: Journal Article
• Authors: Krishnaraj, V.; Vijayarangan, S.; Davim, J. Paulo
• Is Part Of: International journal of material & product technology. Volume 32:Number 2/3(2008)
• Page Start: 264
• Page End: 275
• Publication Date: 2008-06-30
• Subjects: GFRP laminates -- drill geometry -- hole quality -- ANOVA -- analysis of variance -- ANOVA -- glass fibre reinforced plastics -- GFRP composites -- drilling composites -- aircraft manufacturing -- thrust force -- surface finish -- delamination -- drill geometries -- spindle speed -- feed rate; Manufacturing processes -- Periodicals; Materials -- Testing -- Periodicals; 620.11
• Languages: English
• ISSNs: 0268-1900

Abstract

Aircraft manufacturing involves drilling of large number of holes, in which the joint can be critically affected by the quality of the hole. Effect of drill geometry on drilling of glass/epoxy laminates using twist, Zhirov and Multifaceted Drills (MFD), has been studied. The thrust force and hole quality were compared for each drill geometry. Zhirov drill cuts the hole with less force and best surface finish. MFD produces less delamination when compared with the other geometries. ANOVA was used to study the effect of drill geometries, spindle speed, and feed rate on thrust force, surface finish and delamination factor.