Machining Damage in Edge Trimming of CFRP

Sheikh-Ahmad, Jamal; Urban, Neebu Alex; Cheraghi, S. Hossein

doi:10.1080/10426914.2011.648253

Cited by 103 publications

(43 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…As a result, several kinds of damage such as delamination, uncut fibers, thermal and/or mechanical degradation of the matrix, inter laminar cracks are created, and making the machining surface becomes more irregular than that of metallic materials [11 13]. In addition, cutting parameters, tool wear and the relative angle between the direction of cutting speed and fiber direction are crucial factors affecting the damage induced [5,11,12]. In fact, in the experimental work of Morandeau et al [14], the influence of lead angle of the cutting tool on the cutting forces and the machining quality during milling of multi directional composite made of CFRP have been investigated.…”

Section: Introductionmentioning

confidence: 99%

“…In addition, in the work of Slamani et al [16], which focuses on the statistical analysis technique when trimming of multi directional specimens made CFRP, it was mentioned that the effect of cutting speed on the cutting forces is found negligible. Sheikh Ahmad et al [12] have revealed that trimming of CFRP at high cutting speed and low feed speed produces low values of theoretical chip thickness and generates better surface quality. Inversely, the combination be tween low cutting speed and high feed speed gives poor quality of machined surfaces due to the high values of chip thickness which make difficulties in trimming.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Surface integrity while trimming of composite structures: X-ray tomography analysis

Nguyen-Dinh

Zitoune

Bouvet

et al. 2019

Composite Structures

View full text Add to dashboard Cite

The aim of this paper is to study the influence of the process parameters (cutting speed and feed) of the conventional trimming on cutting forces, machining temperatures, tool wear and machining quality of Carbon Fibers Reinforced Plastics (CFRP) using PCD tool. The machining quality was characterized using three different techniques such as Scanning Electron Microscopy (SEM), 3D optical topography and X-ray tomography. The originality of this work is based mainly on the multi-scale characterization of the machined surfaces. In fact, a new parameter based on the measurement of the volume of craters is proposed and compared to the surface roughness criterion (Sa) and the X-ray tomography images. The obtained results show that, with the crater volume criterion as well as the X-ray tomography images, the effect of the machining parameters and the wear of the tool on the textured surfaces are well correlated to surface roughness criterion (Sa). In addition, it was observed that the feed speed and tool wear were the major factors affecting the cutting forces and the machining temperatures.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Surface integrity while trimming of composite structures: X-ray tomography analysis

Nguyen-Dinh

Zitoune

Bouvet

et al. 2019

Composite Structures

View full text Add to dashboard Cite

show abstract

“…Sheikh-Ahmad et al (2012) found that the surface roughness in the transverse direction was mostly higher than that in the longitudinal direction and showed no clear trends with cutting parameters (cutting speed and feed rate). He evaluated that his technique was economical to obtain the effects of different parameters in a systematic manner however its validity of the procedure was generally limited to the range of factors considered for the experimentation.…”

Section: Surface Quality and Surface Damagementioning

confidence: 93%

“…They also showed that delamination propagated from the critical cutting angle range to the component edge, produced the fibres were primarily cut at a cutting angle of 90° < θ < 180° and at the component edge with a cutting angle of 0° < θ < 90°. -Ahmad et al (2012) also studied the machining damage during trimming of CFRP.…”

Section: Delaminationmentioning

confidence: 99%

Effect of Tool Wear on Quality of Carbon Fiber Reinforced Polymer Laminate during Edge Trimming

Hamedanianpour

Châtelain

2013

AMM

View full text Add to dashboard Cite

Polymer matrix composites, particularly carbon fiber reinforced polymers (CFRPs) are widely used in various high technology industries, including aerospace, automotive and wind energy. Normally, when CFRPs are cured to near net shape, finishing operations such as trimming, milling or drilling are used to remove excess materials. The quality of these finishing operations is highly crucial at the level of final assembly. The present research aims to study the effect of cutting tool wear on the resulting quality for the trimming process of high performance CFRP laminates, in the aerospace field. In terms of quality parameters, the study focuses on surface roughness and material integrity (uncut fibers, fiber pull-out, delamination or thermal damage of the matrix), which could jeopardize the mechanical performance of the components. In this study, a 3/8 inch diameter CVD diamond coated carbide tool with six straight flutes was used to trim 24-ply carbon fiber laminates. Cutting speeds ranging from 200 m/min to 400 m/min and feed rates ranging from 1524 mm/min to 4064 mm/min were used in the experiments. The results obtained using a scanning electron microscope (SEM) showed increasing defect rates with increased tool wear. The worst surface integrity, including matrix cracking, fiber pull-out and empty holes, was also observed for plies oriented at -45 degrees. For the surface finish, it was observed that for the studied cutting length ranges, an increase in tool wear resulted in a decrease in surface roughness. Regarding tool wear, a lower rate was observed at lower feed rates and higher cutting speeds, while a higher tool wear rate was observed at intermediate values of our feed rate and cutting speed ranges.

show abstract

“…Research has also shown that the machining parameters feed rate and cutting speed will have a strong influence on the surface quality [6], [9], [10] and [11]. Azmi et al [6], looked at the machinability of glass fibre by end milling with respect to surface roughness, tool life and machining forces.…”

Section: Introductionmentioning

confidence: 99%

An optical method for measuring surface roughness of machined carbon fibre-reinforced plastic composites

Duboust

Ghadbeigi

Pinna

et al. 2016

Journal of Composite Materials

View full text Add to dashboard Cite

Characterization of the damage induced by machining of fibre-reinforced composites is usually performed by measuring surface roughness. Contact-based surface profilometers are the most used equipment in industry; however, it has been found that there are performance limitations which may result when used to measure machined heterogeneous composite surfaces. In this research, surface roughness is characterised using a commercial non-contact optical method, and compared with a conventional stylus profilometer. Unidirectional and multidirectional carbon fibre laminates were edge trimmed and slot milled. The variation in surface roughness was compared using different tool types, fibre orientations and cutting parameters. Surface damage and cutting mechanisms were assessed by using scanning electron microscope images, and the suitability of roughness parameters were also analysed including: Sa, Skewness and Kurtosis. Using the optical system allowed accurate roughness calculation of individual plies on a multidirectional laminate with different fibre orientations. The research has also shown that the optical system, including the use of areal roughness parameters, can increase the accuracy of roughness measurement for machined fibrous composite surfaces and is less sensitive to measurement position than the stylus.

show abstract

Machining Damage in Edge Trimming of CFRP

Cited by 103 publications

References 9 publications

Surface integrity while trimming of composite structures: X-ray tomography analysis

Surface integrity while trimming of composite structures: X-ray tomography analysis

Effect of Tool Wear on Quality of Carbon Fiber Reinforced Polymer Laminate during Edge Trimming

An optical method for measuring surface roughness of machined carbon fibre-reinforced plastic composites

Contact Info

Product

Resources

About