Machinability analysis of dry drilling of carbon/epoxy composites: cases of exit delamination and cylindricity error

Ameur, MF; Habak, Malek; Kenane, M.; Aouici, Hamdi; Cheikh, Mohammed

doi:10.1007/s00170-016-8967-8

Cited by 64 publications

(29 citation statements)

References 24 publications

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“…10a and b. The same results have been reported by Srinivasan et al [40] in optimizing the delamination factor in GFRP composites and Ameur et al [41] in conducting machinability analysis of carbon fiber composites to understand the exit delamination and cylindricity errors. The exit delamination generally presents as a crack in the direction of the fibers Fig.…”

Section: Effect Of Thrust Force On Drilling Parameterssupporting

confidence: 68%

Modeling and evolutionary computation on drilling of carbon fiber-reinforced polymer nanocomposite: an integrated approach using RSM based PSO

Vijayan

Rajmohan

2019

J Braz. Soc. Mech. Sci. Eng.

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Among the various classifications of fiber-reinforced polymer composites, carbon fiber-reinforced plastic (CFRP) composite materials have great potential in aerospace, automobile and marine industries. Drilling is a common machining process of CFRP composites. Surface delamination, tearing, abrasion, denting, cutting of fibers, formation of voids, fiber bending and pullout, etc. are significant problems that occur in the drilling of CFRP composites, among which surface delamination is identified as a critical issue. By optimizing the drilling parameters, the effect of delamination can be minimized, resulting in good quality holes. The drilling process involves several critical process parameters. Therefore, achieving accurate holes during the process is extremely difficult. Three significant drilling process parameters were considered in the present investigation aimed at achieving an optimum drilling response: the thrust force and entry and exit delamination factors. An integrated response surface methodology-based particle swarm algorithm was used to obtain optimal drilling parameters. The obtained optimal settings for CFRP drilling are a drilling speed of 1100 rpm, a feed rate of 5 mm/rev, 5% CNTs and a 110° point angle. The high feed rate increases the thrust force and entry and exit delamination factors in the drilling of fabricated hybrid nano-CNT/CFRP composites.

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Section: Effect Of Thrust Force On Drilling Parameterssupporting

confidence: 68%

Modeling and evolutionary computation on drilling of carbon fiber-reinforced polymer nanocomposite: an integrated approach using RSM based PSO

Vijayan

Rajmohan

2019

J Braz. Soc. Mech. Sci. Eng.

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“…where Di is the drill bit diameter in mm, F is the feedrate in mm/min. To control the diameters quality, measurements were taken on 24 points along the circumference of the hole (as considered a suitable number [32]) by a coordinate measuring machine, Mitutoyo BX 303. The least square circle method was used to calculate the diameter measurements.…”

Section: Methodsmentioning

confidence: 99%

Study of Drilling Process by Cooling Compressed Air in Reinforced Polyether-Ether-Ketone

2020

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This study is focused on the application of a cooling compressed air system in drilling processes; this environmentally friendly technique allows removing material at very low temperatures, approximately up to −22 °C in the cutting area. The main goals are to find the most improve cutting conditions with less energy consumption, for the drilling of reinforced polyether-ether-ketone with glass fiber at 30% (PEEK-GF30) with cooling compressed air by a Ranque-Hilsch vortex tube, and to find a balance between environmental conditions and adequate process performance. Drilling tests were carried out on plates of PEEK-GF30 to analyze the influence of cutting parameters and environmental temperature (–22, 0 and 22 °C) on variables such as thrust forces, energy and material removed rate by the use of statistical methods; analysis of variance, analysis of means, response surface, and desirability function were employed to identify the optimum region that provides the most improved values of the aforementioned variables. Drill bit diameter was also analyzed to determine the quality of drilled holes. During the drilling processes, force signals were detected by a piezoelectric dynamometer connected to multichannel amplifier and a pyrometer was used to control the temperature. The diameters of the drilled holes were measured by a coordinate measuring machine. Cooling compressed air can be considered an adequate technique to improve the results from an environmental and efficient perspective; in particular, the maximum desirability function was found at a spindle speed of 7000 rpm, a feedrate of 1 mm/rev and a temperature close to −22 °C.

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“…The experimental results obtained by Ameur et al. 35 indicated that when dry drilling of carbon/epoxy composites using twist-WC carbide, HSS, and TiN-coated carbide drill at various spindle speeds and feed rates, coated carbide drills are the most effective in drilling of composites because of less thrust force induced. And drilling at 60 mm/min of feed rate, 3000 rev/min of spindle speed, and WC-TiN carbide drill was recommended for minimal delamination factor at exit, cylindricity error, thrust force, and torque.…”

Section: Effect Of Tool Geometry and Materialsmentioning

confidence: 99%

Review on the methodologies adopted to minimize the material damages in drilling of carbon fiber reinforced plastic composites

John

Kumaran

Kurniawan

et al. 2018

Journal of Reinforced Plastics and Composites

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The applications of carbon fiber reinforced plastic materials have increased widely in the fields of aerospace, automotive, maritime, and sports equipment because of their excellent mechanical properties. Machining of carbon fiber reinforced plastics has a considerably more complex effect on drilling qualities than machining of conventional metals and their alloys due to the nonlinear, inhomogeneous, and abrasive nature of CFRPs. This article addresses the methodologies that have been adopted to minimize the material damages in drilling of polymeric composite materials. Key papers are reviewed with respect to tool types, materials, geometry and coatings, back-up plate, coolants, environment, unconventional machining, and high-speed drilling methodologies, which influence the hole qualities of delamination, burr, surface roughness, cylindricity, diameter error, and thermal damage with the effect of cutting variables (spindle speed and feed rate). In addition, some deburring strategies are also reviewed and discussed.

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Machinability analysis of dry drilling of carbon/epoxy composites: cases of exit delamination and cylindricity error

Cited by 64 publications

References 24 publications

Modeling and evolutionary computation on drilling of carbon fiber-reinforced polymer nanocomposite: an integrated approach using RSM based PSO

Modeling and evolutionary computation on drilling of carbon fiber-reinforced polymer nanocomposite: an integrated approach using RSM based PSO

Study of Drilling Process by Cooling Compressed Air in Reinforced Polyether-Ether-Ketone

Review on the methodologies adopted to minimize the material damages in drilling of carbon fiber reinforced plastic composites

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