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Journal ArticleDOI

Effect of cutting speed and feed in turning hardened stainless steel using coated carbide cutting tool under minimum quantity lubrication using castor oil

TL;DR: In this paper, minimum quantity lubrication is a technique to have the advantages that cutting fluids bring yet keeping their use at minimum, where inedible vegetable oils are potential for mini-minimization.
Abstract: Minimum quantity lubrication is a technique to have the advantages that cutting fluids bring yet keeping their use at minimum. For the cutting fluids, inedible vegetable oils are potential for mini...
Citations
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Journal ArticleDOI
TL;DR: In this article, the influence of pure cooling-lubrication (C/L) agents to reduce friction at faying surfaces can ameliorate overall machinability.
Abstract: In machining of soft alloys, the sticky nature of localized material instigated by tool-work interaction exacerbates the tribological attitude and ultimately demeans it machinability. Moreover, the endured severe plastic deformation and originated thermal state alter the metallurgical structure of machined surface and chips. Also, the used tool edges are worn/damaged. Implementation of cooling-lubrication (C/L) agents to reduce friction at faying surfaces can ameliorate overall machinability. That is why, this paper deliberately discussed the influence of pure C/L methods, i.e., such as dry cutting (DC) and nitrogen cooling (N2), as well as hybrid C/L strategies, i.e., nitrogen minimum quantity lubrication (N2MQL) and Ranque–Hilsch vortex tube (RHVT) N2MQL conditions in turning of Al 7075-T6 alloy, respectively. With respect to the variation of cutting speed and feed rate, at different C/Ls, the surface roughness, tool wear, and chips are studied by using SEM and 3D topographic analysis. The mechanism of heat transfer by the cooling methods has been discussed too. Furthermore, the new chip management model (CMM) was developed under all C/L conditions by considering the waste management aspects. It was found that the R-N2MQL has the potential to reduce the surface roughness up to 77% and the tool wear up to 118%. This significant improvement promotes sustainability in machining industry by saving resources. Moreover, the CMM showed that R-N2MQL is more attractive for cleaner manufacturing system due to a higher recyclability, remanufacturing, and lower disposal of chips.

106 citations

Journal ArticleDOI
TL;DR: The numerical results show that EB should be controlled as a vehicle, i.e., lane-changing and retrograde behaviors at a signalized intersection should strictly be prohibited to improve the operational efficiency and traffic safety at the signalization intersection.
Abstract: Recently, electric bicycle (EB) has been one important traffic tool due to its own merits. However, EB’s motion behaviors (especially at a signalized/non-signalized intersection) are more complex than those of vehicle since it always has lane-changing and retrograde behaviors. In this paper, we propose a model to explore EB’s lane-changing and retrograde behaviors on a road with a signalized intersection. The numerical results indicate that the proposed model can qualitatively describe each EB’s lane-changing and retrograde behaviors near a signalized intersection, and that lane-changing and retrograde behaviors have prominent impacts on the signalized intersection (i.e., prominent jams and congestions occur). The above results show that EB should be controlled as a vehicle, i.e., lane-changing and retrograde behaviors at a signalized intersection should strictly be prohibited to improve the operational efficiency and traffic safety at the signalized intersection.

96 citations

Journal ArticleDOI
TL;DR: In this article, the authors present a full reliability-based analysis framework for fiber-reinforced polymer (FRP)-to-concrete bonded joints considering model uncertainty, which improves the predictability of concrete strengthened with fiber composites and provides useful suggestions on their model uncertainties.

88 citations

Journal ArticleDOI
TL;DR: The effectiveness and robustness of the proposed feedback controller toward uncertainties in the friction parameters and external disturbances are illustrated through simulation results.
Abstract: This paper proposes a robust feedback controller using Linear Matrix Inequalities (LMIs) formulation for the stabilization of an underactuated mechanical system, namely the Inertia Wheel Inverted Pendulum (IWIP), in its upright position. Such mechatronic system is subject to state constraints, external disturbances and norm-bounded parametric uncertainties. The main idea to solve the stabilization problem lies in the use of the S-procedure Lemma. Such problem is then transformed into a solving problem of Bilinear Matrix Inequalities (BMIs). Through the Schur complement Lemma and the Matrix Inversion Lemma, a linearization procedure is employed to transform the BMIs into LMIs. Some improvements and comparisons with other LMI-based design techniques without state constraints are developed and discussed. An extensive portfolio of numerical studies is presented. The effectiveness and robustness of the proposed feedback controller toward uncertainties in the friction parameters and external disturbances are illustrated through simulation results.

79 citations

Journal ArticleDOI
TL;DR: In this paper, a generalization of the Gray-Scott model by using variable-order fractional differential equations is proposed and the variable-orders were set as smooth functions bounded in ( 0, 1 ] and, specifically, the Liouville-Caputo and the Atangana-Baleanu -Caputo fractional derivatives were used to express the time differentiation.
Abstract: A reaction–diffusion system can be represented by the Gray–Scott model. The reaction–diffusion dynamic is described by a pair of time and space dependent Partial Differential Equations (PDEs). In this paper, a generalization of the Gray–Scott model by using variable-order fractional differential equations is proposed. The variable-orders were set as smooth functions bounded in ( 0 , 1 ] and, specifically, the Liouville–Caputo and the Atangana–Baleanu–Caputo fractional derivatives were used to express the time differentiation. In order to find a numerical solution of the proposed model, the finite difference method together with the Adams method were applied. The simulations results showed the chaotic behavior of the proposed model when different variable-orders are applied.

77 citations

References
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Journal ArticleDOI
TL;DR: In this article, the performance of a multilayer tungsten carbide tool was described using response surface methodology (RSM) when turning AISI 1045 steel.

660 citations


"Effect of cutting speed and feed in..." refers methods in this paper

  • ...Noordin et al.17 described the performance of carbide tools in terms of surface roughness and cutting forces using response surface methodology when turning AISI 1045 steel....

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  • ...Noordin et al.(17) described the performance of carbide tools in terms of surface roughness and cutting forces using response surface methodology when turning AISI 1045 steel....

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Journal ArticleDOI
TL;DR: A review of the main developments in cutting technology since the foundation of CIRP over fifty years ago is given in this paper, where the main technological developments associated with the cutting tool and tool materials, the workpiece material, the machine tool, the process conditions and the manufacturing environment are given detailed consideration.

624 citations


"Effect of cutting speed and feed in..." refers background in this paper

  • ...Positive results have been reported on the use of MQL compared to conventional flood cooling technique or to dry machining (no cutting fluid used) on steel workpieces, especially in terms of tool life, cutting forces, and surface finish.3,5–9 Byrne et al.5 reviewed that for turning of steels, MQL results better surface finish and tool life compared to dry turning by lowering temperature and providing lubrication at the tool– workpiece interface....

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  • ...Byrne et al.(5) reviewed that for turning of steels, MQL results better surface finish and tool life compared to dry turning by lowering temperature and providing lubrication at the tool– workpiece interface....

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  • ...They also reviewed that in turning carbon steel, MQL results better surface finish and cutting forces compared to flood cooling.(5) Dhar et al....

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Journal ArticleDOI
TL;DR: In this article, the role of minimum quantity lubrication (MQL) on tool wear and surface roughness in turning AISI-4340 steel at industrial speed-feed combination by uncoated carbide insert was investigated.

432 citations


"Effect of cutting speed and feed in..." refers background in this paper

  • ...They also reviewed that in turning carbon steel, MQL results better surface finish and cutting forces compared to flood cooling.5 Dhar et al.3,6 reported that MQL provides better performance than conventional flood cutting when turning AISI 4340 steel using carbide tools in terms of tool wear and surface roughness....

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  • ...Dhar et al.(3,6) reported that MQL provides better performance than conventional flood cutting when turning AISI 4340 steel using carbide tools in terms of tool wear and surface roughness....

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Journal ArticleDOI
TL;DR: In this article, the authors provide a thermo-analytical and physical-chemistry characterization of castor oil and biodiesel, and show that biodiesel data are very close to the volatilization temperatures of conventional diesel.
Abstract: The castor oil seed has 47–49% of oil. Biodiesel obtained from castor oil has a lower cost compared to the ones obtained from other oils, as due its solvability in alcohol transesterification occurs without heating. The use of biodiesel will allow a reduction on the consumption of petroleum-derived fuels minimizing the harmful effects on the environment. This work wants to provide a thermoanalytical and physical-chemistry characterization of castor oil and biodiesel. Biodiesel was obtained with methyl alcohol and characterized through several techniques. Gas chromatography indicated methyl ester content of 97.7%. The volatilization of biodiesel starts and finishes under inferior temperatures than the beginning and final volatilization temperatures of castor oil. Biodiesel data are very close to the volatilization temperatures of conventional diesel.

256 citations


"Effect of cutting speed and feed in..." refers background in this paper

  • ...The components of castor oil are palmitic, stearic, oleic, linoleic, ricinoleic, saturated fatty acid, and unsaturated fatty acids.(11) The measured responses were tool life, surface roughness, and cutting forces....

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Journal ArticleDOI
TL;DR: In this paper, a specially formulated cutting fluid was applied as a high velocity, thin pulsed jet at the immediate cutting zones at an extremely low rate of 2 ml/min using a fluid application system developed for this purpose during turning of hardened steel.
Abstract: Environmental concerns call for the reduced use of cutting fluids in metal cutting practice. New cutting techniques are to be investigated to achieve this objective. Hard turning with Minimal Fluid application (HTMF) is one such technique, which can alleviate the pollution problems associated with cutting fluids. In the present work a specially formulated cutting fluid was applied as a high velocity, thin pulsed jet at the immediate cutting zones at an extremely low rate of 2 ml/min using a fluid application system developed for this purpose during turning of hardened steel. The performance of HTMF is studied in comparison with that of conventional hard turning in wet and dry form.

240 citations


Additional excerpts

  • ...Varadarajan et al.(8) found that during turning of hardened steel (AISI 4340 with 46HRC hardness) by coated carbide tools, the cutting force, tool life, and surface finish resulted under MQL were better than when dry and flooded turnings were conducted instead....

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  • ...Varadarajan et al.8 found that during turning of hardened steel (AISI 4340 with 46HRC hardness) by coated carbide tools, the cutting force, tool life, and surface finish resulted under MQL were better than when dry and flooded turnings were conducted instead....

    [...]