Experimental Study in Drilling Composite Pipes Manufactured by Filament Winding Process Using Full Factorial Design Method

Document Type : Research Article

Authors

Department of mechanical engineering, Tafresh University, Tafresh, Iran

Abstract

Drilling is one of the major machining processes for assembling process in composite tubes. During drilling, damages such as matrix cracking, fiber pull out and delamination around the hole may cause the loss of residual compression strength of the composite tubes. In this paper, the effect of drilling parameters such as spindle speed, feed rate, diameter and geometry shape of the drill on thrust force and delamination factor with full factorial design method for composite tubes manufactured by filament winding process was investigated. According to the results, the parameters affecting the delamination factor are the geometric shape of the drill, feed speed, drill diameter and spindle speed, respectively.  Also, by selecting twist drill tools with a diameter of 12 mm, spindle speed of 1000 rpm and feed rate of 25 mm/min, the  amount of delamination factor is minimized. The residual compressive strength of the best and worst specimens according to delamination factor was investigated. According to the results, by decreasing delamination factor, the residual compressive strength increases. Also, if the input parameters in the drilling process are selected correctly, the residual compressive strength would increase around 12%.

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Main Subjects

References

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Amirkabir Journal of Mechanical Engineering
Volume 50, Issue 3
September and October 2018
Pages 489-504

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