K V J Bhargav
@qiscet.edu.in/qiscet
Head Projects and Research and Mechanical Engineering/ bhargav.k@qiscet.edu.in
QIS College of Engineering and Technology
EDUCATION
National Institute of Technology, Rourkela (NIT Rourkela):
Ph.D., Micromachining & Nanoparticle synthesis (CGPA: 9.10) Rourkela, Odisha, India
Dissertation: Development of a μ-ECDM system with different (Thesis Submitted)
process modes for machining of micro features and nanoparticles synthesis
Jawaharlal Nehru Technological University (JNTUH)
Master of Technology, (M.Tech), Manufacturing Systems (80.61%) Hyderabad, Telangana, India
Department of Mechanical Engineering (Dual Degree) 2015
Dissertation: Optimization of drilling process parameters on GFRP composites.
Jawaharlal Nehru Technological University (JNTUH)
Bachelor of Technology, (B.Tech), (74.54%) Hyderabad, Telangana, India
Department of Mechanical Engineering (Dual Degree) 2015
Dissertation: Kinematic Analysis of a parallel manipulator for biomedical applications.
Intermediate (Board of Intermediate Education)MPC 2010
Sri Chaitanya Junior college (97.2%) Ongole, AP, India
RESEARCH, TEACHING, or OTHER INTERESTS
Mechanical Engineering
Scopus Publications
Scholar Citations
Scholar h-index
Scholar i10-index
Scopus Publications
A.K. Aadhithiyan, K.V.J. Bhargav, R. Sreeraj, and S. Anbarasu
Elsevier BV
Bhargav K. V. J., Balaji P. S., and Ranjeet Kumar Sahu
Walter de Gruyter GmbH
Abstract Electrochemical corona discharge micromachining (µ-ECDM) is a newly advented, advanced hybrid machining process capable of machining non-conducting and conducting materials. In this article, Polymethyl methacrylate (PMMA), a non-conducting material, often used in microfluidic applications, is machined to generate microchannels. The process parameters chosen for machining are voltage, duty factor, and concentration. The process parameters are chosen at three levels, and their effect on machining characteristics such as material removal rate and surface roughness are detailed in this paper. Optimization is carried out for individual response using the signal to noise ratio optimization technique for maximizing material removal rate and minimizing surface roughness.
K. V. J. Bhargav, P. Shanthan, P. S. Balaji, and Ranjeet Kumar Sahu
Springer Nature Singapore
K V J Bhargav, Kaushik Raj Pyla, P S Balaji, and Ranjeet Kumar Sahu
Informa UK Limited
K. V. J. Bhargav, P. S. Balaji, and Ranjeet Kumar Sahu
Informa UK Limited
ABSTRACT Glass has become an integral part of today’s world. This is because of its wide range of applications owing to its various potential properties. Though it has enormous applications, processing or machining glass is a challenging task. The present study focuses on the generation of microholes on borosilicate glass (thickness: 1000 µm) using an in-house developed in-situ electrolyte-sonicated (ES)-micro electrochemical discharge machining (µ-ECDM), i.e. ES-µ-ECDM system. The experiments revealed that the sonication of electrolytes had increased the electrolyte flushing, which enables the basic µ-ECDM process to push its limits and machine the materials beyond 300 µm (hydrodynamic regime). The process parameters selected for the experimentation are voltage, concentration, and duty factor with sonication of electrolyte at 36 kHz frequency throughout the experiments. Material removal rate (MRR) and overcut (OC) are identified as the machining characteristics in this study. To acquire enhanced machining characteristics, the process parameters are further optimized using the MOJAYA algorithm in conjunction with the R-method which is a multi-attribute decision-making method (MADM). The detailed experimentation revealed that using electrolyte sonication through-holes was achieved at a higher level of parameter settings.
K. V. J. Bhargav, P. S. Balaji, Ranjeet Kumar Sahu, and Jitendra Kumar Katiyar
Informa UK Limited
ABSTRACT Carbon fiber-reinforced polymer (CFRP) composites are an advanced composite material class due to their remarkable properties such as high load-carrying capacity and low density. CFRP composites have enormous applications in aerospace, biomedical, automobile, etc. Machining the CFRP composite is need of the day, but issues like delamination, fiber pullouts, workpiece damage, etc. have made it difficult. These limitations can be surpassed by the micro-electrochemical corona discharge machining (µ-ECDM) process. Although the process has showcased high process capability and great versatility in machining conducting and non-conducting materials, the process has limitations in machining holes deeper than 300 µm because of insufficient electrolyte supply at the machining zone. Aiding assistance to the process can overcome the limitation by enhancing electrolyte availability. Therefore, an experimental analysis is carried out by generating through holes on the CFRP composite using a tailor-made rotating tool-assisted micro-electrochemical corona discharge machining (RT-µ-ECDM) system. The process parameters, voltage, concentration, duty factor, and tool rotation rate are taken at three levels. The materials removal rate and overcut as machining characteristics were analyzed. The multi-response optimization using JAYA algorithm and R-method is used to obtain the optimal process parameters. The experimental investigation suggests RT-µ-ECDM system can machine through holes on CFRP composite.
K. V. J. Bhargav, P. S. Balaji, Ranjeet Kumar Sahu, and Moussa Leblouba
Springer Science and Business Media LLC
AbstractMicromachining of difficult-to-machine materials is of prime focus nowadays. One such material is Titanium, which has numerous applications in aerospace, chemical, and biomedical industries. The micromachining of Titanium has become the need of the day because of its exhilarating properties. This investigation employs a tailor-made electrolyte sonicated micro-electrochemical discharge machining (ES-µ-ECDM) system to generate microholes in a commercially pure titanium plate with a thickness of 1000 µm. The machining chamber is the ultrasonication unit (36 kHz) with process parameters voltage (V), concentration (wt%), and duty factor (DF) chosen at three levels. The FCC-RSM-based DOE is selected for experimentation to study the machining characteristics like material removal rate, overcut, and circularity. Through holes were achieved at parameters of 80 V, 25 wt%, and 60% DF and 80 V, 30 wt%, and 50% DF. The incorporation of ultrasonication into the system enhanced electrolyte replenishment and evacuation of the debris at the machining vicinity. The assistance technique improved the gas film stabilization around the tool enabling uniform machining. The multi-response optimization is performed using the MOJAYA algorithm to obtain Pareto optimal solutions, and the MADM (R-method) is employed to obtain the optimal parameter. The optimal parameter was found to be 69 V, 30 wt%, and 50% DF, at which the machined microhole was found to have a circularity of 0.9615 with minimal surface defects.
K.V.J. Bhargav, P. Shanthan, P.S. Balaji, Ranjeet Kumar Sahu, and Susanta Kumar Sahoo
Elsevier BV
K.V.J. Bhargav, P.S. Balaji, Ranjeet Kumar Sahu, and Jitendra Kumar Katiyar
Elsevier BV
S. Venu, K. V. J. Bhargav, and P. S. Balaji
Springer Singapore
Balaji P. S., Karthik Selva Kumar Karuppasamy, Bhargav K. V. J., and Srajan Dalela
IGI Global
The strain gauge system consists of a metallic foil supported in a carrier and bonded to the specimen by a suitable adhesive. Previous chapters discussed the construction, configuration, and the material of the strain gauge. The strain gauge has advantages over the other methods. A strain gauge can give directly the strain value as output. However, in optical methods, it is required to interpret the results. It is also required to be aware that the strain gauge technology is majorly used, and it can also be easily wrongly used. Hence, it is required to obtain the proper knowledge of the strain gauge to get the full benefit of the technology. This chapter covers the majorly on the performance of the strain gauge, its temperature effects, and strain selection. Further, this chapter also covers the brittle coating technique that is used to decide the position of the strain gauge in the applications.