Machining of Carbon Fibre: Optical Surface Damage Characterisation and Tool Wear Study

Duboust, Nicolas; Melis, Davide; Pinna, C.; Ghadbeigi, Hassan; Collis, Andrew; Ayvar-Soberanis, Sabino; Kerrigan, Kevin

doi:10.1016/j.procir.2016.02.170

Cited by 16 publications

(6 citation statements)

References 7 publications

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“…Similar to subsurface damage results discussed in Section 3.4, R20 experienced the lowest Ssk value (Figure 11d)) which is correlated with limited material pull-out that is linked with the rubber toughening mechanism, followed by silica and unmodified epoxy composite. As the fact that the most damage is created in the 135° plies was previously reported in the literature [46], [47], Ssk is considered an effective parameter which is able to link the subsurface damage to surface metrics results for 135° fibre orientation.…”

Section: Subsurface Damage Analysis In Relation To Chip Formation Mec...mentioning

confidence: 99%

The effect of particle reinforcements on chip formation and machining induced damage of modified epoxy carbon fibre reinforced polymers (CFRPs)

Monoranu

Mitchell

Kerrigan

et al. 2022

Composites Part A: Applied Science and Manufacturing

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Section: Subsurface Damage Analysis In Relation To Chip Formation Mec...mentioning

confidence: 99%

The effect of particle reinforcements on chip formation and machining induced damage of modified epoxy carbon fibre reinforced polymers (CFRPs)

Monoranu

Mitchell

Kerrigan

et al. 2022

Composites Part A: Applied Science and Manufacturing

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“…This is 10.75% decrease in surface roughness of machined samples of carbon epoxy composite by using optimum levels of parameters. Some studies have reported 32–36 on traditional machining of carbon epoxy composite. Surface roughness ( R a ) observed in these studies ranges from 2.87 to 4.012.…”

Section: Optimization Using Grey Relational Analysismentioning

confidence: 99%

Study on carbon epoxy composite surfaces machined by abrasive water jet machining

Dhanawade¹,

Kumar²

2018

Journal of Composite Materials

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Traditional machining of carbon epoxy composite material is difficult due to excessive tool wear, excessive stresses and heat generation, delamination, high surface waviness, etc. In the present paper, research work involved in the experimental study of abrasive water jet machining of carbon epoxy composite material is described. The aim of present work is to improve surface finish and studying defects in machined samples. Taguchi's orthogonal array approach is used to design experiments. Process parameters namely hydraulic pressure, traverse rate, stand-off distance and abrasive mass flow rate are considered for this study. Analysis of machined surfaces and kerf quality is carried out using scanning electron microscope to evaluate microscopic features. Further, the effect of machining parameters on surface roughness is investigated using analysis of variance approach. It is found that traverse rate and pressure are most significant parameters to control surface roughness. Optimization of process parameters is performed using grey relational analysis. Thereafter, confirmation tests are carried out to verify the improvement in the surface quality with optimum set of process parameters. It is found that surface finish of machined samples is improved by 10.75% with optimum levels of process parameters. Defects like delamination, fiber pull-out and abrasive embedment are also studied using SEM. It is observed that delamination and fiber pull-out are prominent in samples machined at low pressure and high traverse rate.

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“…Authors proved the surface roughness increased with machining distance generally following a steady trend. They also reported that diamond coated tool with multiple cutting teeth or also known as burrs tool was able to produce a good quality surface although at high feed rate, V f in comparison with polycrystalline diamond (PCD) tool [17,18]. Souhir Gara and Oleg Tsoumarev performed a series of comparison study on a few different micro-grain of burr tool which categorized into fine, medium and coarse type in slotting CFRP material.…”

Section: Introductionmentioning

confidence: 99%

Effect of Machining Parameters on Surface Roughness in Edge Trimming of Carbon Fiber Reinforced Plastics (CFRP)

2020

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The main aim of this research was to investigate the effect of machining parameters towards surface quality during edge trimming process on a specific CFRP material. There were two variation of machining parameters focused in this work namely spindle speed (N) and feed rate (V f). The CFRP panel is measured 3.25 mm in thickness and the type of fabric was unidirectional (UD). It has 28 number of plies in total and were arranged multi-directional. Router or burr tool geometry made of uncoated tungsten carbide with a diameter of 6.35 mm was used to perform the edge trimming process. Surface roughness measurement was taken using Mitutoyo Surftest SJ-410. Furthermore, optical microscope Nikon MM-800 is utilized to further observe the trimmed surfaces. The result reveals that the smallest value of the surface roughness (1.31 µm) is obtained by Run 8 (R8) which the spindle speed, N applied was 2506 rpm and feed rate, V f at 376 mm/min. Meanwhile, the highest surface roughness value (12.62 µm) exhibited by the R9 which had the highest setting of spindle speed, N 7518 rpm and the highest feed rate, V f 1128 mm/min. The result is supported by the observation of trimmed surface through optical microscopy which clearly exhibits uncut fibers and matrix degradation condition. Details results elaborated and discussed further in this paper.

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Machining of Carbon Fibre: Optical Surface Damage Characterisation and Tool Wear Study

Cited by 16 publications

References 7 publications

The effect of particle reinforcements on chip formation and machining induced damage of modified epoxy carbon fibre reinforced polymers (CFRPs)

The effect of particle reinforcements on chip formation and machining induced damage of modified epoxy carbon fibre reinforced polymers (CFRPs)

Study on carbon epoxy composite surfaces machined by abrasive water jet machining

Effect of Machining Parameters on Surface Roughness in Edge Trimming of Carbon Fiber Reinforced Plastics (CFRP)

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