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Online since: June 2021
Authors: Ke Tong, Shen Cong, Qing Liu, Bo Zhu, Xu Ying Kang
[3] Li Helin, Guo Shengwu, Feng Yaorong, et al.
El-boujdaini.
[12] Zhang Peng, Zhao Guoxian, Bi Zongyue, et al.
[13] Zhou Qi, Ji Genshun, Zhang Jianbin, et al.
[15] Liu Ge, Huang Bensheng, Peng Cheng, et al.
El-boujdaini.
[12] Zhang Peng, Zhao Guoxian, Bi Zongyue, et al.
[13] Zhou Qi, Ji Genshun, Zhang Jianbin, et al.
[15] Liu Ge, Huang Bensheng, Peng Cheng, et al.
Online since: April 2012
Authors: Ming Chen, Xiao Jiang Cai, Qing Long An, Sheng Qin
Liao et al. [5] conducted slot milling and side milling experiments, and considering cutting force, tool wear and chips results concluded that 55~135m/min was appropriate for side milling.
The effects of cutting tool geometry parameters on surface integrity are emphasized in the works of Arunachalam et al. [6], Pawade et al. [7] and Sharman et al. [8].
Pusavec et al. [9] proposed that cryogenic machining improved surface integrity by comparing several cooling and lubrication conditions.
Experiments The workpiece material used in experiments was Inconel 718, with a composition of 53.8% Ni, 18.1% Cr, 17.8% Fe, 5.5% Nb, 2.9% Mo, 1% Ti, 0.55% Al, 0.25% C, 0.04% Si, 0.06% Mn.
Vol. 86 (1998), p. 1 [2] I.A Choudhury and M.A El-Baradie: J.
The effects of cutting tool geometry parameters on surface integrity are emphasized in the works of Arunachalam et al. [6], Pawade et al. [7] and Sharman et al. [8].
Pusavec et al. [9] proposed that cryogenic machining improved surface integrity by comparing several cooling and lubrication conditions.
Experiments The workpiece material used in experiments was Inconel 718, with a composition of 53.8% Ni, 18.1% Cr, 17.8% Fe, 5.5% Nb, 2.9% Mo, 1% Ti, 0.55% Al, 0.25% C, 0.04% Si, 0.06% Mn.
Vol. 86 (1998), p. 1 [2] I.A Choudhury and M.A El-Baradie: J.
Online since: January 2014
Authors: Olga A. Akimova, Yury A. Krutyakov, Aleksey I. Klimov, Albert N. Denisov, Denis V. Kuznetsov, Olga V. Zakharova, Anna Godymchuk, Alexander A. Gusev
El-Temsah, E.J.
Gusev, et al., Carbon nanotubes enter the cells and stimulate sprouts of esparcet Onobrychis arenaria (Kit.).
Huy, et al., Photochemical Synthesis of Highly Bactericidal Silver Nanoparticles.
Tam, et al., Synthesis of oleic acid-stabilized silver nanoparticles and analysis of their antibacterial activity.
Huy, et al., Green synthesis of finely-dispersed highly bactericidal silver nanoparticles via modified Tollens technique.
Gusev, et al., Carbon nanotubes enter the cells and stimulate sprouts of esparcet Onobrychis arenaria (Kit.).
Huy, et al., Photochemical Synthesis of Highly Bactericidal Silver Nanoparticles.
Tam, et al., Synthesis of oleic acid-stabilized silver nanoparticles and analysis of their antibacterial activity.
Huy, et al., Green synthesis of finely-dispersed highly bactericidal silver nanoparticles via modified Tollens technique.
Online since: August 2014
Authors: Kang Li Wu, Hsing Ping Kuo
The most famous measurement of service quality in the service industry that can be used across various service domains is that established by Parasuraman et al. [2].
Subsequently, Parasuraman et al.[1] derived the widely used, five-dimensional SERVQUAL instrument using exploratory factor analysis.
Parasuraman, et al. [1] considered consumers as the only ones who can judge service quality, and the service quality generally is assessed based on the contrast between their perceptions and their expectations.
Pierre et al.[3] used the PZB theory to create a research model for service performance.
Roger et al. [4] also applied SERVQUAL to study service quality.
Subsequently, Parasuraman et al.[1] derived the widely used, five-dimensional SERVQUAL instrument using exploratory factor analysis.
Parasuraman, et al. [1] considered consumers as the only ones who can judge service quality, and the service quality generally is assessed based on the contrast between their perceptions and their expectations.
Pierre et al.[3] used the PZB theory to create a research model for service performance.
Roger et al. [4] also applied SERVQUAL to study service quality.
Online since: June 2015
Authors: I. Malico, P.J.S.A. Ferreira de Sousa, C. Ferrão
However, since this weak inertial transitional regime occurs over a small range of Reynolds numbers, Fand et al. [8] suggested that it could be neglected and that an artificial transitional Reynolds number could be considered.
For example, MacDonald et al. [13] evaluated the Ergun model [11] through the comparison of experimental results obtained for several types of unconsolidated and consolidated porous media.
A detailed description of the implementation of the numerical method used in this work and its verification can be found in the paper of Ferreira de Sousa et al. [19].
A similar divergence between the numerical results and the Ergun Equation, Eq. 2, was observed by Jeong et al. [20].
El-Sayed, K.
For example, MacDonald et al. [13] evaluated the Ergun model [11] through the comparison of experimental results obtained for several types of unconsolidated and consolidated porous media.
A detailed description of the implementation of the numerical method used in this work and its verification can be found in the paper of Ferreira de Sousa et al. [19].
A similar divergence between the numerical results and the Ergun Equation, Eq. 2, was observed by Jeong et al. [20].
El-Sayed, K.
Online since: February 2024
Authors: S. Dinesh Kumar, J. Ekanthamoorthy, Sudalai Perumal, Madhanagopal Manoharan, Arivendhan Ajithram
Anadakumar et al., (2017) mixed copper powder with kerosene servotherm at weight of 10 gm. for a current value 10 amps produces better material removal rate, less tool wear rate and reduced overcut in the diameter [3].
Vijayanand et al. (2016) developed Taguchi L9 orthogonal array to predict the tool wear rate and material removal rate for hole drilling of Monel metal using Electrical Discharge Machining.
Hadi et al. (2022) found that copper-graphite composite electrode produces lower surface roughness in the monel 400 using EDM process by performing set of experiments with Taguchi method [5].
Padmini et al. (2015) studied the influence of radial overcut over the input parameters [8] such as discharge current, pulse on time, pulse off time, geometrical shape tools using Taguchi experimental array design.
El-Tamimi, M.K.
Vijayanand et al. (2016) developed Taguchi L9 orthogonal array to predict the tool wear rate and material removal rate for hole drilling of Monel metal using Electrical Discharge Machining.
Hadi et al. (2022) found that copper-graphite composite electrode produces lower surface roughness in the monel 400 using EDM process by performing set of experiments with Taguchi method [5].
Padmini et al. (2015) studied the influence of radial overcut over the input parameters [8] such as discharge current, pulse on time, pulse off time, geometrical shape tools using Taguchi experimental array design.
El-Tamimi, M.K.
Online since: January 2014
Authors: C. Yang, K.C. Leong, I. Pranoto, L.X. Zheng, P.K. Chan
Ahn et al. [8] investigated the effect of nano-structured surfaces on a horizontal heater surface coated with MWCNTs.
McHale et al. [10] investigated the boiling heat transfer of MWCNT structures using HFE-7300 and DI water.
Recently, Shenoy et al. [11] conducted an experimental study on the MWNT structures in a minichannel with water as the cooling medium.
The wall temperature readings and boiling curves for different CNT structures and smooth Al surface with G = 50 kg/m2·s are presented in Fig. 3.
El-Genk, Enhanced saturation and subcooled boiling of FC-72 dielectric liquid, Int.
McHale et al. [10] investigated the boiling heat transfer of MWCNT structures using HFE-7300 and DI water.
Recently, Shenoy et al. [11] conducted an experimental study on the MWNT structures in a minichannel with water as the cooling medium.
The wall temperature readings and boiling curves for different CNT structures and smooth Al surface with G = 50 kg/m2·s are presented in Fig. 3.
El-Genk, Enhanced saturation and subcooled boiling of FC-72 dielectric liquid, Int.
Online since: May 2014
Authors: Giuseppina Ambrogio, Francesco Gagliardi, Andrea Ghiotti, Stefania Bruschi, Luigino Filice
Surface and Microstructure Considerations in High Speed Single Point Incremental Forming of Ti6Al4V Sheets
Giuseppina Ambrogio 1, a *, Stefania Bruschi2,b , Francesco Gagliardi1,c , Andrea Ghiotti2,d, Luigino Filice1,e
1Dept. of Mechanical, Energy and Management Engineering, University of Calabria - Italy
2Department of Industrial Engineering, University of Padova - Italy
ag.ambrogio@unical.it, bstefania.bruschi@unipd.it, cf.gagliardi@unical.it, dandrea.ghiotti@unipd.it, el.filice@unical.it
Keywords: Incremental Sheet Forming, High Speed, Titanium.
Afterward, Duflou et al. [6] introduced the hot incremental forming of Ti6Al4V, heating the working material by means of a Laser source.
Fan et al. [7] found out a cheaper solution for the hot incremental sheet forming (Hot-ISF) of Titanium sheets.
The same technique was implemented in 2012 also by Ambrogio et al. in a subsequent study [8] aimed at determining the Titanium Ti6Al4V formability by Hot-ISF for changing process conditions.
Finally, in 2013 Ambrogio et al. [10] proposed a novel experimental approach used for manufacturing Titanium sheets by ISF at high speed.
Afterward, Duflou et al. [6] introduced the hot incremental forming of Ti6Al4V, heating the working material by means of a Laser source.
Fan et al. [7] found out a cheaper solution for the hot incremental sheet forming (Hot-ISF) of Titanium sheets.
The same technique was implemented in 2012 also by Ambrogio et al. in a subsequent study [8] aimed at determining the Titanium Ti6Al4V formability by Hot-ISF for changing process conditions.
Finally, in 2013 Ambrogio et al. [10] proposed a novel experimental approach used for manufacturing Titanium sheets by ISF at high speed.
Online since: September 2014
Authors: Long Zhou, Jun Ma, Bei Yan, Li Ping Ma, Ze Cheng Zi, De Hua Zhang
SHENG, M.S.Mei, F.M.CHEN, et al.
L ZHOU, P.J.XIA, S.S.ZHANG, et al.
[9] S.C.ZHENG, L.P.MA, X.K.NIU, et al.
[10] L.P.MA, X.K.NIU, J.HOU, et al.
[12] L.H.YUE, Z.G.JIA, D.L.JIN, et al.
L ZHOU, P.J.XIA, S.S.ZHANG, et al.
[9] S.C.ZHENG, L.P.MA, X.K.NIU, et al.
[10] L.P.MA, X.K.NIU, J.HOU, et al.
[12] L.H.YUE, Z.G.JIA, D.L.JIN, et al.
Online since: June 2014
Authors: Joe J. Liou, Tahany I. El-Wardany
El-Wardany
United Technologies Research Center
411 Silver Lane
East Hartford, CT 06108, USA
*E-mail: lioujj@utrc.utc.com
Keywords: Deep rolling, friction, residual stress, finite element method
Abstract.
Yen et al. [5] conducted 2D plain-strain and 3D finite element (FE) analyses of roller burnishing using a spherical rigid roller loaded on the hard-turned elastic-plastic material made of AISI 52100 steel to study the deformation on surface lays and residual stress in the near-surface material.
Sartkulvanich et al. [6] further improved the 2D an 3D FE analyses and concluded that (i) tensile residual stresses predicted from the simulation are due to the plane strain assumption used in the 2D model since the tool is presented as a cylindrical object rather than a spherical object.
Other similar numerical simulations in the this subject can be found in Guagliano and Vergani [8], Choi and Pan [3, 9], Majzoobi et al. [10], Fu et al. [11], Sayahi et al. [12], and Klocke et al. [13].
[15] Li, L. and He, N., “A FEA Study on Mechanisms of Saw-Tooth Chip Deformation in High Speed Cutting of Ti-6-Al-4V Alloy,” Proceedings of the Fifth International Conference on High Speed Machining, Metz, France, 2006, pp. 759-767
Yen et al. [5] conducted 2D plain-strain and 3D finite element (FE) analyses of roller burnishing using a spherical rigid roller loaded on the hard-turned elastic-plastic material made of AISI 52100 steel to study the deformation on surface lays and residual stress in the near-surface material.
Sartkulvanich et al. [6] further improved the 2D an 3D FE analyses and concluded that (i) tensile residual stresses predicted from the simulation are due to the plane strain assumption used in the 2D model since the tool is presented as a cylindrical object rather than a spherical object.
Other similar numerical simulations in the this subject can be found in Guagliano and Vergani [8], Choi and Pan [3, 9], Majzoobi et al. [10], Fu et al. [11], Sayahi et al. [12], and Klocke et al. [13].
[15] Li, L. and He, N., “A FEA Study on Mechanisms of Saw-Tooth Chip Deformation in High Speed Cutting of Ti-6-Al-4V Alloy,” Proceedings of the Fifth International Conference on High Speed Machining, Metz, France, 2006, pp. 759-767