Influence of Lay-up Configuration and Feed Rate on Surface Integrity when Drilling Carbon Fibre Reinforced Plastic (CFRP) Composites

Li, Maojun; Soo, Sein Leung; Aspinwall, D.K.; Pearson, D.; Leahy, W.

doi:10.1016/j.procir.2014.04.068

Cited by 34 publications

(12 citation statements)

References 9 publications

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“…When the load exceeds the fiber yield strength, failure occurs below the cutting plane/surface with the debris removed as the tool passes, which creates cavities or grooves onto the surface. [ 38 ] Additionally, fiber pullouts owing to the fiber/matrix interface debonding and fiber fragments inserting inside the interlayers are prevalent in the drilling process of carbon/PI composites. The phenomenon is attributed to the inherent brittleness of the carbon/PI material which involves the brittle‐fracture dominated chip removal mode leading to the powdery chip formation.…”

Section: Resultsmentioning

confidence: 99%

On the machining behavior of carbon fiber reinforced polyimide and PEEK thermoplastic composites

Huang

Davim

et al. 2020

Polymer Composites

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Polyimide (PI) and polyetheretherketone (PEEK) are superior high‐performance thermoplastics being extensively used in the fields of fiber‐reinforced polymer composites. However, there is very limited literature addressing the machining behavior of the PI and PEEK composites. The present paper aims to conduct a comparative study into the machining characteristics of these two representative high‐performance thermoplastic matrix composites under varying cutting conditions. Machinability aspects of the carbon/PI and carbon/PEEK thermoplastic composites were evaluated in terms of drilling forces, machining temperatures, delamination damage, surface morphologies, hole dimensional accuracy and tool wear. The results indicate that the carbon/PEEK composites generally show a much poorer machinability than the carbon/PI composites in terms of higher drilling forces, higher cutting temperatures, larger delamination extents and excessive tool wear. Since the carbon/PEEK composites exhibit certain ductility leading to the continuous chip formation, the cut hole surface morphologies and dimensional accuracy are much better than those gained in the carbon/PI composites. Both the cutting speed and the feed rate affect significantly the drilling forces and the resulting delamination damage. The fundamental wear mechanisms of drilling carbon/PI composites are abrasion wear in the form of edge rounding and slight chip adhesion, while for the carbon/PEEK composites, they are abrasion, serious chip adhesion because of the high drilling temperatures promoted at the drill‐work interface and catastrophic failures of coating peeling and edge fracture.

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Section: Resultsmentioning

confidence: 99%

On the machining behavior of carbon fiber reinforced polyimide and PEEK thermoplastic composites

Huang

Davim

et al. 2020

Polymer Composites

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show abstract

“…Previous work reported that instantaneous cutting forces (frequency and magnitude) varied with the varying fibre orientation and relative position between the cutting edge and the fibres, which affected the machined surface quality [32]. Additional studies showed that the cutting forces and surface roughness developed in the machining of composites depend on the orientation of the fibres and the way in which fibres are cut [33,34], and that angle ply laminates are easier to machine than unidirectional ones [35].…”

Section: Analysis Of the Thrust Force Fz And Torque Mzmentioning

confidence: 99%

An experimental study on drilling of unidirectional GLARE fibre metal laminates

Giasin

Ayvar-Soberanis

Hodzic

2015

Composite Structures

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“…The CFRP composites are being introduced in the fabrication of major structural members of aircrafts with floor beams, frame panels and significant portion of the tail sections being the specific examples. 6 CFRP members in these applications are typically joined through mechanical fastening, i.e. riveting and bolting, requiring as much as tens of thousands of drilled holes for the complete assembly.…”

Section: Introductionmentioning

confidence: 99%

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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Influence of Lay-up Configuration and Feed Rate on Surface Integrity when Drilling Carbon Fibre Reinforced Plastic (CFRP) Composites

Cited by 34 publications

References 9 publications

On the machining behavior of carbon fiber reinforced polyimide and PEEK thermoplastic composites

On the machining behavior of carbon fiber reinforced polyimide and PEEK thermoplastic composites

An experimental study on drilling of unidirectional GLARE fibre metal laminates

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

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