Effect of drilling parameters on specific cutting energy and delamination of a composite made of unsaturated polyester resin and chopped glass fibres

Marathe, A. B.; Javali, Anil M

doi:10.1177/0892705714563121

Cited by 11 publications

(4 citation statements)

References 17 publications

(14 reference statements)

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“…(ii) The increase in drill speed may also result in cutting of fibers owing to the absences of drill tool bouncing and softening of matrix martial which may results in lower order of responses. (iii) The wide range of thrust force (40-85 N) and torque (15)(16)(17)(18)(19)(20)(21)(22)(23)(24)(25)(26)(27)(28) was observed with HSS drill material for the tested limits of spindle speed (500-2500 r/min) and feed rate (0.05-0.25 mm/r). But SC drill material showed marginal variations initially due to its high hardness, high stiffness, and keenness of cutting edge.…”

Section: Discussionmentioning

confidence: 94%

“…Latha et al 20 have examined spindle speed tool feed on delamination and concluded that the tool travel and tool diameters influence the process. Marathe and Javali 21 have made drilling experiments to find the influence of tool geometries, drill speeds, and feed rates on delamination damages. Tan et al 22 have conducted drilling experiments on hybrid composite made by CF/GF to evaluate their machinability.…”

Section: Introductionmentioning

confidence: 99%

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Optimization and sensitivity analysis of drilling parameters for sustainable machining of carbon fiber–reinforced polypropylene composites

Mudhukrishnan

Hariharan

Palanikumar³

et al. 2018

Journal of Thermoplastic Composite Materials

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Machining processes face two major challenges: sustainability and cleaner production. However, the effective utilization of tool and methods of lubrication system in sustainable machining have been dealt in depth in earlier investigations. This work aims to optimize sustainable machining parameters in drilling process for recyclable carbon fiber-reinforced polypropylene (CFR-PP) composites. This work is focused on modeling and optimization of drilling parameters for sustainable machining with respect to thrust force and torque for CFR-PP composites. The response surface method based on D-optimal design of experiments is used for modeling and optimization with variables such as drill spindle speed and drill feed rate as numerical factors, which includes different drill material as the categorical factor. The influences of tool materials on the sustainable machining are also discussed in detail. Further, the sensitivity analysis is applied to compare the relative impact of control parameters (spindle speed, feed rate, and drill materials) on thrust force and torque. The scanning electron microscope images are used for analyzing the morphologies of drilled surfaces.

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Section: Discussionmentioning

confidence: 94%

Section: Introductionmentioning

confidence: 99%

Optimization and sensitivity analysis of drilling parameters for sustainable machining of carbon fiber–reinforced polypropylene composites

Mudhukrishnan

Hariharan

Palanikumar³

et al. 2018

Journal of Thermoplastic Composite Materials

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show abstract

“…Typically, higher wear and adhesion, due to work hardening at higher cutting temperatures and increasing friction, are associated with high cutting speeds, which result in high SCE. However, lower feed rates are associated with lower SCE and cutting forces (Ref 23,24). The lower feed rates combined with the lubrication and cooling ability of the polymeric ester aided in reducing the damage to the cutting tool edge as friction, adhesion, and heat could be minimized despite the high cutting speeds of these drilling conditions.…”

Section: Discussionmentioning

confidence: 99%

The Influence of Polymeric Ester-Type Additives on the Performance of Metal Cutting Fluids for Machining of Titanium Alloy

Mohammadi

Gali

et al. 2021

J. of Materi Eng and Perform

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The introduction of additives to metal working fluid (MWF) compositions helps to reduce friction and wear while holding the possibility of sustainability to the environment. This study was performed to examine polymeric ester additives' influence on the MWFs performance during the drilling of a titanium alloy, Ti-6Al-4V, under a constant removal rate (MRR) of 4.2 mm 3 /s. The specific cutting energy (SCE) and build-up edge (BUE) were evaluated to assess the additives' performance in the MWFs. It was observed that the drilling performance of the polymeric ester additives was dependent on the drilling conditions employed. The high polarity polyester additive with high molecular weight displayed enhanced drilling performance under the drilling conditions with cutting speeds of 0.105, 0.188, and 0.293 m/s, and respective feed rates of 0.040 mm/r, 0.022 mm/r, and 0.014 mm/r. This enhanced drilling condition was reflected in the SCE with the high polarity polyester additive possessing lower values than the low-molecular-weight polymeric ester by 32, 27, and 35%, and the high-molecular-weight polymer ester by 17, 6, and 18% at each of the respective drilling conditions. The high-molecular-weight polymer ester was a more suitable additive under the drilling condition with a cutting speed of 0.419 m/s and feed rate of 0.01 mm/r, boasting a 27 and 24% improvement in SCE compared with the high polarity polyester and low-molecular-weight polymeric ester, respectively. The polymeric ester additives' performance could be attributed to the formation of a carbonrich boundary layer on the cutting blade and the presence of oxygen and carbon in the BUE on the cutting edges.

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“…They found that the thrust force and the delamination increase with widening of the drill point angle. Marathe and Javali 18 established experimental drilling tests on a composite of unsaturated polyester resin and chopped glass fibers to examine the effect of the drill point angle on the specific cutting energy. They found that the low amount of specific cutting energy was obtained for a small drill point angle, which improve the efficiency of machining.…”

Section: Introductionmentioning

confidence: 99%

Numerical and experimental investigation of the hole saw tool geometry effects on drilling of random chopped fiber composites

Hassouna

Mzali

Zemzemi

et al. 2021

Journal of Thermoplastic Composite Materials

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Drilling is the most widely used machining process in manufacturing holes in many industrial applications. Optimizing the drilling process is a key to improve the hole quality. Therefore, numerical modeling is an effective method that gives an idea about the cutting process to optimize the drilling parameters. This paper emphasizes the sensitivity of the thrust force, the torque and the machining-induced damage to the hole saw tool geometry using a 3D Finite Element (FE) model developed using ABAQUS/Explicit. A Johnson cook model associated with a ductile damage law is used to predict the failure mechanism of a random chopped glass fiber reinforced polyester. It is found that the thrust force, the torque and the damage around the hole obtained from the FE model are in good agreement with the experimental data. Differences of about 2% for the thrust force, 2.4% for the torque and 3% for the damage around the hole are observed. The results of the numerical model also indicated that the thrust force as well as the drilled workpiece quality are improved by choosing the suitable rake angle. A decrease of about 61% in the thrust force is observed when varying the rake angle from 0° to 20°. However, the latter has an insignificant effect on the thrust force. Furthermore, it can be concluded that this parameter highly influences the material removal process.

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Effect of drilling parameters on specific cutting energy and delamination of a composite made of unsaturated polyester resin and chopped glass fibres

Cited by 11 publications

References 17 publications

Optimization and sensitivity analysis of drilling parameters for sustainable machining of carbon fiber–reinforced polypropylene composites

Optimization and sensitivity analysis of drilling parameters for sustainable machining of carbon fiber–reinforced polypropylene composites

The Influence of Polymeric Ester-Type Additives on the Performance of Metal Cutting Fluids for Machining of Titanium Alloy

Numerical and experimental investigation of the hole saw tool geometry effects on drilling of random chopped fiber composites

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