S. Balaji, Ajay Ingle, Swapnil Pawar, N.Natarajan, Yumna Khan, Sharanya Prakash, Dhanashri K. Dhuri, Amit Kalyani and Sujatha Pushpakanth
Kalyani Centre For Technology And Innovation, Bharat Forge Limited, India
Posters & Accepted Abstracts: Res. Rev. J Mat. Sci
The rapid developments in nanotechnology has led to the emergence of a relatively new class of fluids called nanofluids, which could offer enhanced thermal conductivity and reducing the surface tension of the base fluid. Neat oil is traditionally and commonly used in many fields such as cutting, grinding and machining applications. Different nanoparticles exhibit various physicochemical properties (e.g., structure and shape), which can influence their lubricating properties. In this work, we have engineered colloidal suspensions of nano composite with an average size of 30 to 50 nm of functionalized graphene was covalently bonded to boron nitride by a microwave process, the nanocomposite was dispersed with base fluid concentration ranging from 0.1 to 0.01% , by ultrasonication method. To obtain a uniform distribution of the nanocomposite in the fluid matrix, with the purpose of filling the research gap in the literatures, this paper presents experimental data of thermal conductivity and viscosity properties of hybrid graphene based nanocomposite in the nano fluids for effective grinding applications. The FTIR spectroscopy further confirmed the presence of pyrophosphate and metal-oxygen bonding with O-H stretching and existence of nitride bonds in the composites which reveal the existence of boron group and carbon particles in the composite nano-fluid. Machining parameters are measured during grinding applications using nano composite fluid. It is observed that properties such as surface roughness, temperature stability, cylindrical and chips morphology, and cutting efficiency drastically improved with increased tool life exhibiting better machining performance compared to base fluid. The grinding chips morphology observed in the scanning electron microscope revealed less shearing with improved martial cutting. The results showed that the type of nano-composite and its concentration in base fluid play a significant role in reducing friction. Recent Publications: 1. Padmini R, Vamsi Krishna P, Krishna Mohana Rao G (2016) Effectiveness of vegetable oil based nanofluids as potential cutting fluids in turning AISI 1040 steel. Tribology International 94:490-501. 2. Baldev Raj, Angayarkanni S.A, John Phlip(2017) Nanofluids for Efficient Heat Transfer Applications.Nanotechnology for Energy Sustainability 40 3. Sheikholeslamia M, Hayat T, Alsaedic A, Abelmand SNumerical analysis of EHD nanofluid force convective heat transfer considering electric field dependent viscosity.International Journal of Heat and Mass Transfer 108:2558-2565. 4. Dinesh Setti, Manoj Kumar Sinha, Sudarsan Ghosh, Venkateswara Rao P(2014) Performance evaluation of Ti–6Al– 4V grinding using chip formation and coefficient of friction under the influence of nanofluids International Journal of Machine Tools & Manufacture 88 : 237–248
Dr. S. Balaji obtained his doctoral degree in the field of Material and Biomaterial science. His additional expertise is in the synthesis of nanoparticles and composite fabrications. His current research is focused towards the development of nano-biomaterials and metal matrix composite and improving their performance in applications such as Automobile & Health Care. He also holds five Indian patents & 16 International publications.