Tool geometry based prediction of critical thrust force while drilling carbon fiber reinforced polymers

Bahtiyar, O.

doi:10.1007/s40436-015-0129-y

Cited by 28 publications

(11 citation statements)

References 16 publications

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“…Similar pattern was observed by others with PCD drills, coated and uncoated carbide drills. 27,[30][31][32] As was observed for delamination, here too, coated tools resulted into much less fraying damage in comparison to baseline HSS as can be seen in Figures 7 and 9.…”

Section: Machining Qualitysupporting

confidence: 64%

Carbon fiber-reinforced polymer composite drilling via aluminum chromium nitride-coated tools: Hole quality and tool wear assessment

Harris¹,

Qureshi

Saleem

et al. 2017

Journal of Reinforced Plastics and Composites

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Drilling into carbon fiber-reinforced polymer composites presents a stiff challenge in terms of ensuring hole quality aspects such as delamination, roughness, roundness, etc. while maintaining an adequate tool life. The hardened carbon fibers in laid up form generally give rise to chips in powdered form that contribute significantly to tool wear problem. To overcome the aforementioned issues, the use of high performance tools has been reported. This paper reports on the usage of yet another novel high performing but much economical aluminum chromium nitride-coated tools that are typically employed for metallic parts. The effect of aluminum chromium nitride tools at three spindle speeds with constant feed rate was evaluated on hole quality, tool wear, and chip formation pattern of carbon fiber-reinforced polymer composite plates. The results were compared with the performance of conventional high speed steel tools taken as baseline. It was found that the coated tools help significantly improve hole quality and provide appreciable tool life at specific machining parameters.

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Section: Machining Qualitysupporting

confidence: 64%

Carbon fiber-reinforced polymer composite drilling via aluminum chromium nitride-coated tools: Hole quality and tool wear assessment

Harris¹,

Qureshi

Saleem

et al. 2017

Journal of Reinforced Plastics and Composites

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“…On the other hand, high temperature and chip formation like powder during drilling cause deterioration in surface integrity of isotropic and heterogenic CFRP layers [15]. This situation is a result of having different mechanical and thermal properties of matrix and reinforcement materials which form composite materials, causing a more difficult drilling process than traditional metal cutting processes [16].…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation on novel drilling strategy of CFRP laminates using variable feed rate

Yaşar

Günay

2019

J Braz. Soc. Mech. Sci. Eng.

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This study focused on the influences of drilling parameters on hole quality and thrust force in drilling of carbon fiberreinforced polymer (CFRP) composite laminates via variable feed rate. Drilling experiments were carried out by using three different cutting speeds, feed rates and the qualities of tungsten carbide drill. Scanning electron microscopy and coordinate measurement machine were used for hole surface damage and diameter analyses, and also a portable instrument and 3D optical profilometer were utilized for surface roughness measurement. It was identified that thrust force (F z), delamination factor (F d) and average surface roughness (R a) values attained in drilling processes by variable feed rate are lower than those of constant feed rate with average of 14%, 3% and 18%, respectively. Besides, the hole diameter (D) values obtained with variable feed rate in hole exit were higher than those of constant feed rate. Moreover, the higher F z values were obtained with diamond-coated and TiAlN-coated drills than those of uncoated drill with 55% and 77%, respectively. The interactive influences of drilling parameters on machinability factors were evaluated via analysis of variance, and then, the most significant parameter was specified as the feed rate for F d , just as the drill quality for F z , R a and D. According to the experimental and statistical results, we suggested that the novel drilling strategy is a significant alternative for the step hole and conventional drilling of CFRP laminates.

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“…Hole quality in drilling of CFRP depends on various factors such as tool edge geometry, tool coatings, cutting force, feed rate and cutting environment [17][18][19][20][21]. Similarly, 50% increase in tool life was observed with coating on the cutting tool during drilling [22].…”

Section: Literature Reviewmentioning

confidence: 99%

Surface roughness analysis in the drilling of carbon fiber/epoxy composite laminates using hybrid Taguchi-Response experimental design

Shahabaz

Shetty

et al. 2020

Mater. Res. Express

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The carbon fiber reinforced polymer composite has made a substantial impact on the manufacturing sectors owing to its excellent mechanical, thermal and corrosion resisting properties. The surface roughness mainly depends on the machining parameters while drilling of carbon fiber reinforced polymer composite laminates. The study concentrates on the impact of uncoated and titanium nitride coated solid carbide drills on minimizing the roughness that is generated while making holes in bi-directional carbon fiber reinforced polymer composite by optimizing the drilling constraints [spindle speed (A), feed rate (B), point angle (C) and drill diameter (D)]. Experimental studies are carried out using Taguchi L 27 orthogonal array. The investigation discloses that the drill diameter is one of the most influencing cutting parameters followed by spindle speed and feed rate. The response surface methodology is chosen as a tool for predicting and optimizing the process parameters. The investigation also discloses that the experimental and the predicted results of surface roughness are closely matching with each other. The surface morphology illustrates that titanium nitride coated solid carbide drills minimize the surface roughness compare to that of uncoated solid carbide drills.

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Tool geometry based prediction of critical thrust force while drilling carbon fiber reinforced polymers

Cited by 28 publications

References 16 publications

Carbon fiber-reinforced polymer composite drilling via aluminum chromium nitride-coated tools: Hole quality and tool wear assessment

Carbon fiber-reinforced polymer composite drilling via aluminum chromium nitride-coated tools: Hole quality and tool wear assessment

Experimental investigation on novel drilling strategy of CFRP laminates using variable feed rate

Surface roughness analysis in the drilling of carbon fiber/epoxy composite laminates using hybrid Taguchi-Response experimental design

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