Comparative Study of Tool Life and Hole Quality in Drilling of CFRP/Titanium Stack Using Coated Carbide Drill

Isbilir, Ozden; Ghassemieh, Elaheh

doi:10.1080/10910344.2013.806098

Cited by 98 publications

(62 citation statements)

References 32 publications

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“…It is generally known that surface roughness increases with increasing feed rate. This result is similar with literature [18]. On the other hand, increasing surface roughness values can be explained with increasing thrust force by increasing feed rate [20].…”

Section: Analysis Of Surface Roughness (Ra)supporting

confidence: 92%

“…El-Sonbaty et al determined that cutting speed has negligible effect on thrust force (Fz), but torque values increase with increasing cutting speed [17]. İşbilir ve Ghassemieh indicated that average surface roughness value increase with increasing feed rate while it decreases with increasing cutting speed [18]. It was reported that anisotropic CFRP composites exhibit different machinability characteristics according to different fiber directions during drilling.…”

Section: Introductionmentioning

confidence: 99%

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Investigation on hole quality of cutting conditions in drilling of CFRP composite

2017

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Abstract. Surface damages and delamination occurred in drilling of the carbon fiber reinforced polymer composite materials, which change depending on their physical and mechanical properties and cutting conditions, and so affect the hole quality. Therefore, it is requires to be selective with regards to drill geometry and drilling parameters during drilling of CFRP. This study investigated the effects of cutting parameters and drill geometry on the hole quality in terms of hole diameter and surface roughness during the drilling of CFRP composite laminate. Drilling experiments were performed with three different levels of drilling parameters that are point angle, cutting speed and feed rate. At the end of the drilling tests, it has determined that if the feed rate increases, the surface roughness value increases while the hole diameter decreases. The feed rate was determined as the most important parameter with a PCR of 78.02% according to analysis of variance. The better hole quality was obtained with 130° drill among the three drill geometry.

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Section: Analysis Of Surface Roughness (Ra)supporting

confidence: 92%

Section: Introductionmentioning

confidence: 99%

Investigation on hole quality of cutting conditions in drilling of CFRP composite

2017

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“…Similarly, titanium and its alloys are often used because of their high strength to weight ratio, compressive and tensile strength at high temperature, low density, corrosion and erosion resistance, fatigue resistance and low modulus of elasticity. These materials are frequently combined by bolting and riveting to optimise the weight to strength ratio [13,14].…”

Section: Examined Materialsmentioning

confidence: 99%

“…Composite materials are anisotropic, non-homogenous and heat sensitive, while their machining behaviour depends on diverse reinforcement and the properties of their matrix. CFRPs achieve their mechanical and structural properties from the nature, orientation and bond of fibres that are arranged in flat panels, sheets or woven structures [13][14][15][16][17][18][19][20][21]. Any machining that breaks the fibres influences the properties and service life of the part.…”

Section: Examined Materialsmentioning

confidence: 99%

“…As a result, the machining of titanium typically incurs high machining cost with high tool wear, tool life is decreased by chipping, and burrs are introduced to both entrance and exit surfaces of the holes. Thrust force, tool wear and the increase of the feed rate during drilling affect the formation and size of burrs, which may result in inaccuracies and assembly errors [14,[32][33][34][35][36].…”

Section: Examined Materialsmentioning

confidence: 99%

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A metrological inspection method using micro-CT for the analysis of drilled holes in CFRP and titanium stacks

Kourra

Warnett

Attridge

et al. 2016

Int J Adv Manuf Technol

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This paper demonstrates a novel method that combines X-ray computed tomography (CT) and image processing for investigating two materials with significantly different densities. CT is increasingly used in industrial applications of inspecting materials and defects. The limitations of the system and data reconstruction are continuously researched so as to improve the quality of the results. One of the most common issues in CT is beam hardening, frequently experienced in multi-material scanning. The materials examined to demonstrate the method are carbon fibre reinforced polymers (CFRP) and titanium alloy Ti6Al4V, often used in combination in industry to optimise the weight to strength ratio. The assembly of the materials is usually achieved by bolting and riveting, which requires drilling through the two materials together. The machining of these materials is difficult due to their higher specific properties and as a result tool wear is always an issue. CFRPs properties depend on the nature, orientation and bond of the fibres and as a result drilling affects their service life. The results of the method ensure the quality of the drilled holes by measuring the variation of the maximum diameter, circularity, positioning of the hole and an examining the entrance delamination and exit burrs by image processing.

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Comparative Assessment and Merit Appraisal of Thermally Assisted Machining Techniques for Improving Machinability of Titanium Alloys

Shams

Pramanik

Chandratilleke

et al. 2018

Introduction to Mechanical Engineering

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Comparative Study of Tool Life and Hole Quality in Drilling of CFRP/Titanium Stack Using Coated Carbide Drill

Cited by 98 publications

References 32 publications

Investigation on hole quality of cutting conditions in drilling of CFRP composite

Investigation on hole quality of cutting conditions in drilling of CFRP composite

A metrological inspection method using micro-CT for the analysis of drilled holes in CFRP and titanium stacks

Comparative Assessment and Merit Appraisal of Thermally Assisted Machining Techniques for Improving Machinability of Titanium Alloys

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