A comparative study on tool wear and laminate damage in drilling of carbon-fiber reinforced polymers (CFRP)

Gaugel, Simon; Sripathy, Prithvi; Haeger, Andreas; Meinhard, Dieter; Bernthaler, Timo; Lissek, Fabian; Kaufeld, Michael; Knoblauch, Volker; Schneider, Gerhard

doi:10.1016/j.compstruct.2016.08.004

Cited by 179 publications

(81 citation statements)

References 29 publications

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“…The delamination is inferred from the ratio of the maximum diameter (D max ) with the nominal diameter (D nom ) of the hole as equation (1). 29 The maximum diameter is calculated by double distance from the center of the nominal hole to the furthest point extension. The nominal diameter and the tool diameter are similar…”

Section: Quality Assessmentsmentioning

confidence: 99%

Experimental influence of twist angle and cryogenic gas on quality of drilled hole in carbon fiber reinforced plastic composites

Tran

Tsai

Hsiao

et al. 2020

Measurement and Control

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The considerable body of literature on the effect of moisture on the mechanical properties of composites has shown that there is a disinclination to use coolant fluids within the composite industry. Tool geometry and cryogenic liquid cooling also have a significant impact on carbon fiber–reinforced plastic machining capabilities. In this paper, the two issues mentioned are improving the drilled hole quality and reducing the amount of CO2 released into the air to protect the environment. The experimental characteristics using a carbide drill with three levels of twist angle of flute and a gas mixture of CO2–N2 were investigated. To verify hole quality, the diameter, the delamination, the uncut fiber area, and the surface roughness were analyzed. With the goal of reducing the amount of CO2 released into the atmosphere, a list of experiments was proceeded in the dry, the air, gas CO2, and a gas mixture of CO2–N2. The thrust force and the temperature were observed. Based on the experiment results, the high helix tool was more advantageous than the triple tool and low helix tool. The difference in the effect of CO2 and CO2–N2 was not significant with the triple tool and the low helix tool; however, the performance of the CO2–N2 gas mixture showed a positive effect on the high helix tool.

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Section: Quality Assessmentsmentioning

confidence: 99%

Experimental influence of twist angle and cryogenic gas on quality of drilled hole in carbon fiber reinforced plastic composites

Tran

Tsai

Hsiao

et al. 2020

Measurement and Control

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show abstract

“…In case improper machining technology is applied when machining CFRPs, many micro-and macro-geometrical damages can be generated easily: such damages include delamination [6,7,[14][15][16][17][18][19][20][21][22][23][24], uncut fibres and pull-outs [13,[25][26][27][28][29][30][31] as well as microcracks on the machined surfaces [30,[32][33][34]. In order to minimize the above-listed damages, there are many process and technological parameters that have to be optimized including (i) the geometry and coating of the cutting tool [18,33]; (ii) the cutting speed, feed rate and the depth of cut [7,18,35]; (iii) the tool path [7,13,32]; (iv) the cooling [36][37][38][39]; and (v) the type of support plate [40][41][42].…”

Section: Introductionmentioning

confidence: 99%

Comparative analysis of wobble milling, helical milling and conventional drilling of CFRPs

Pereszlai

Geier

2020

Int J Adv Manuf Technol

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Due to its excellent specific mechanical properties, carbon fibre-reinforced polymer (CFRP) composite is a widely used structural material in the aerospace industry. However, this material is difficult to cut, mainly due to its inhomogeneity and anisotropic features and because of the strong wear effects of its carbon fibres. In the scope of aerospace industrial uses of this material, thousands of holes have to be machined for purposes of assembly. Nevertheless, conventional drilling technologyeven if special drilling tools are usedis only moderately able to manufacture good quality holes. Wobble milling is a novel advanced hole-making technology, which has been developed to minimize machining-induced geometrical defects like delamination or uncut fibres. The main objective of the present paper is to compare wobble milling, helical milling and conventional drilling technologies concerning unidirectional CFRPs. In addition, the kinematics of wobble milling technology is discussed in detail. In the scope of this paper, numerous machining experiments were conducted in unidirectional CFRPs: herein the impact of the type of cutting tool and of process parameters on the quality of machined holes are analysed and discussed (diameter of holes, circularity error and characteristics of uncut fibres). During these investigations, experimental data were evaluated with the help of digital image processing (DIP) and with the help of analysis of variance (ANOVA) techniques. Experimental results show that the amount of uncut fibres can significantly be minimized through the application of wobble milling technology.

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“…That is to say, the conventional cutting tools is usually not the best choice to machining good quality features in CFRPs unless using some certain methods. A effective approach to improve machining quality is that making the single cutting thickness in the reasonable range [8,9]. On the other hand, applying internal coolant holes at speci c position and using minimum quantity lubrication (MQL), the tool wear is also effectively reduced and hole surface quality is greatly improved [10].…”

Section: Introductionmentioning

confidence: 99%

Cutting Performance of Bionic Cutting tools Based on Surface Microstructures of Blood Clams in Dry Cutting of CFRP

You

Xie

Xu-yang

et al. 2020

Preprint

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Carbon fibre reinforced polymer (CFRP) composites are widely used in high-tech industries like the automobile and aerospace sectors, but the wear resistance of tools is one of the most significant restrictions in machining CFRP. In this study, bionic cutting tools based on surface microstructures of blood clams were fabricated to improve the dry cutting performance of CFRP. Three types of bionic cutting tools with different size parameters were applied in dry cutting test. The three-axis cutting forces and the cutting temperature of the processed workpiece were measured. The average friction coefficient between the rake face and the chip was calculated, and the morphology of the tools wear were observed. The results showed that bionic microstructures with appropriate size parameters can extremely improve the cutting performance of CFRP for tool in turning.

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A comparative study on tool wear and laminate damage in drilling of carbon-fiber reinforced polymers (CFRP)

Cited by 179 publications

References 29 publications

Experimental influence of twist angle and cryogenic gas on quality of drilled hole in carbon fiber reinforced plastic composites

Experimental influence of twist angle and cryogenic gas on quality of drilled hole in carbon fiber reinforced plastic composites

Comparative analysis of wobble milling, helical milling and conventional drilling of CFRPs

Cutting Performance of Bionic Cutting tools Based on Surface Microstructures of Blood Clams in Dry Cutting of CFRP

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