The Effect of Machining Parameters on Drilling Induced Delamination of Carbon Fiber Reinforced Polymer Composite

Shetty, Divakara S and Rajat, Apurv and Shetty, Geet and Patil, Prathamesh (2017) The Effect of Machining Parameters on Drilling Induced Delamination of Carbon Fiber Reinforced Polymer Composite. International Journal of Applied Engineering Research, 12 (19). pp. 8286-8293. ISSN 0973-4562

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Delamination is one of the most common defects occur during drilling of carbon fiber reinforced polymer composites. It is an inter-ply failure phenomenon and it has to be minimized to have better quality of drilled holes for structural applications. The current study is conducted to investigate the effect of machining parameters (spindle speed, drill diameter, feed rate and point angle) on delamination while drilling of 60-40 weight % and 55-45 weight % of bi-directional carbon fiber reinforced polymer (BD CFRP) composites with titanium nitride (TiN) coated solid carbide drills. Taguchi L27 orthogonal array is used for determining the experimental results of delamination and the Taguchi methodology is also employed for determining the predicted results of delamination of both BD CFRP composite laminates. The investigation reveals that there is a good concurrence between the experimental and the predicted results of delamination. The main effect plot shows that the drill diameter has a significant effect on delamination as compared to the effect of spindle speed and feed rate. The point angle has an insignificant influence on delamination in drilling of BD CFRP composites. It is evident from the investigation that 45 weight % of resin content of BD CFRP composite gives lesser delamination as compared to the composite containing 40% of resin. Hence, 45-55 weight % of BD CFRP composite laminate can be a better choice for structural applications in industries.

Item Type: Article
Uncontrolled Keywords: carbon fiber reinforced polymer composite; delamination; drilling; orthogonal array; solid carbide drills; Taguchi methodology
Subjects: Engineering > MIT Manipal > Mechanical and Manufacturing
Depositing User: MIT Library
Date Deposited: 10 Nov 2017 09:24
Last Modified: 10 Nov 2017 09:24

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