Tool Temperature in Slotting of CFRP Composites

El-Hofy, Mohamed; Soo, Sein Leung; Aspinwall, D.K.; Sim, W.M.; Pearson, D.; M’Saoubi, Rachid; Harden, P.

doi:10.1016/j.promfg.2017.07.007

Cited by 28 publications

(18 citation statements)

References 22 publications

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“…On the other hand, it was shown that the heat partition into the workpiece in the dry milling of steel varies with undeformed chip thickness from 0.10 to 0.50, with the larger partition ratio associated with the smaller undeformed chip thickness. 25 Luchesi and Coelho 26 determined this partition in face milling of 4340 steel to be 0.35. Both of these works utilized an inverse heat conduction method to determine the heat partition ratio.…”

Section: Resultsmentioning

confidence: 99%

“…Ghafarizadeh 14 reported that the cutter temperature increased with an increase in cutting speed. El-Hofy et al 25 reported that the cutter temperature increased with an increase in the cutting speed and decreased with the increase in feed per tooth. Both results in Kerrigan et al 23 and El-Hofy et al 24 indicated a strong interaction between the cutting speed and feed speed in their influence on cutter temperature.…”

Section: Resultsmentioning

confidence: 99%

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Heat partition in edge trimming of fiber reinforced polymer composites

Sheikh-Ahmad

Almaskari

Hafeez

2020

Journal of Composite Materials

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Thermal loading of fiber reinforced composites during traditional machining is inevitable. This is due to the fact that most of the mechanical energy utilized in material removal is converted into heat, which is subsequently dissipated into the workpiece and the cutter, and is carried away by the chips. Heat conduction into the workpiece during machining might cause thermal damage due to matrix softening and decomposition if the generated temperatures exceeded the glass transition temperature of the epoxy resin. In this work, the amount of heat flux applied to the machined edge and the temperature distribution in multidirectional CFRP and GFRP composite laminates was determined using an iterative inverse heat conduction method. The transient heat conduction problems in the laminate and cutter were simulated independently using the finite element method and the amount of heat flux applied to each was determined. It was also found that the heat flux conducted to the workpiece represented only a small fraction of the total heat and is more influenced by the feed speed than the spindle speed. The temperature of the machined surface was estimated and correlations with the resulting machined surface texture were made.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Heat partition in edge trimming of fiber reinforced polymer composites

Sheikh-Ahmad

Almaskari

Hafeez

2020

Journal of Composite Materials

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“…The pertinent analysis scale for NFRP machining is related to the natural fibrous reinforcement size [17][18][19][20][21] because the tribo-mechanical response of natural fibers inside composite materials is strongly dependent on the contact scale [22][23][24]. However, the machining processes are not purely based on tribo-mechanical phenomena since the machining operations induce significant temperature increase due to the high deformation rate and high tool/material friction [25,26]. Therefore, the induced thermal effect must be considered because the machining tribo-system of NFRP composites could be thermo-mechanical dependent.…”

Section: Introductionmentioning

confidence: 99%

Thermal effect on the tribo-mechanical behavior of natural fiber composites at micro-scale

Chegdani

Mansori

Bukkapatnam

et al. 2020

Tribology International

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This paper aims to explore the thermal influence on the micro-tribo-mechanical behavior of natural fiber composites. Nanoindentation and scratch-test are used to characterize flax fibers reinforced polypropylene (PP) composites. Results show a different thermo-mechanical behavior between flax fibers and PP matrix. While the stiffness of PP matrix decreases by increasing the sample temperature, the stiffness of flax fibers shows an increase then a decrease by changing the sample temperature from 25°C to 100°C with a maximum at 60°C. This attests to a modification of the chemical composition of flax fibers when increasing the temperature. The specific thermo-mechanical behavior of flax fibers affects their friction comportment at a high sliding speed which demonstrates that the tribology of NFRP composites is thermo-mechanical-dependent.

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“…El-Hofy et al. 8 showed that the flank surface temperature increases with increasing cutting speed and decreasing feed rate in the CFRP slotting. Matrix content and layup configuration were found to alter the cutting temperature as reported by Inoue et al.…”

Section: Introductionmentioning

confidence: 99%

“…Yashiro et al 7 measured the cutting temperature and the temperature distribution within the machined surface layer during CFRP milling, and the relationship between the cutting temperature and cutting speed was studied. El-Hofy et al 8 showed that the flank surface temperature increases with increasing cutting speed and decreasing feed rate in the CFRP slotting. Matrix content and layup configuration were found to alter the cutting temperature as reported by Inoue et al 9 Merino-P erez et al 10 presented that the cross-linking density and degree of crystallinity of fibers affected fiber flexibility and temperature when drilling CFRP.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of heat generation using a microscopic cutting model with thermo-mechanical coupling for carbon fiber reinforced polymer composites

Qian

Xiao

Wang

et al. 2020

Journal of Reinforced Plastics and Composites

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A three-dimensional micromechanical finite element cutting model with the thermo-mechanical coupling was developed for carbon fiber reinforced polymer composites in the paper. The finite element modeling considers the three phases of a composite, in which the interphase between the fiber and matrix can realize heat transfer and allow debonding to represent the failure of composites. The model predictions of the machining responses, such as cutting temperature and subsurface damage, at different fiber orientations were compared with various experimental data for model validation. It is indicated that the three phase micromechanical model is capable of precisely predicting cutting temperature and the damage induced by the cutting tool. It was found that cutting temperature and subsurface damage strongly depend on the fiber orientation. Subsurface damage is easily occurs in a fiber orientation range of 90°–135°, while the largest depth of the thermal damage occurs at 90°. In addition, the effect of machining parameters on the cutting temperature was investigated based on the cutting model. It was showed that the cutting speed should be reasonably selected to control the cutting temperature. The temperature decrease with increase the rake angle, while increase with increase depth of cut and radius of cutting edge.

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Tool Temperature in Slotting of CFRP Composites

Cited by 28 publications

References 22 publications

Heat partition in edge trimming of fiber reinforced polymer composites

Heat partition in edge trimming of fiber reinforced polymer composites

Thermal effect on the tribo-mechanical behavior of natural fiber composites at micro-scale

Evaluation of heat generation using a microscopic cutting model with thermo-mechanical coupling for carbon fiber reinforced polymer composites

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