Dr. Vignesh Nayak Ullal
Work Experience
- Presently serving as Senior Assistant Professor in the department of mechanical Engineering at Mangalore Institute of Technology and Engineering, Moodabidri. Joined on 15th July 2019. Prior to this was working as Lecturer (part time) in the Department of Metallurgical and Materials Engineering at N.I.T.K, Surathkal.
- Served in the QA/QC Department of Dynamatic Technologies, Peenya, Bangalore between 2012-2013
Education
1. Ph.D. in Metallurgical and Materials Engineering 2013 to 2018
Thesis Title: Characterisation of select nanofluid and vegetable oil quenchants and assessment of heat transfer during quench hardening of steels
University: National Institute of Technology Karnataka (NITK)
- Master of Technology in Process Metallurgy 2010 to 2012
Project Title: Wetting Behaviour of Sn-3.5Ag Lead-Free Solder on 304 Stainless Steel Substrates
CGPA: 8.92 (Gold Medal)
University: National Institute of Technology Karnataka (NITK) - B.E. in Mechanical Engineering 2006 to 2010
Project Title: Dynamic Stress Analysis of Connecting Rod
Rank: First class with distinction
Percentage: 71.53
University: Visvesvaraya Technological University (VTU). - Pre-University 2004 to 2006
Rank: First class
Percentage: 77.3
University: Board of secondary education, Karnataka
Technical Skills
Laboratory Instruments handled: Thermal analysis system, Rheometer, Drop Shape Analyzer, Microscope and Stereo Microscope (Karl Zeiss), Thermal conductivity analyser, SEM.
Software skills: MS Word, MS Excel, MS PowerPoint, Origin data analysis and graphing, Inverse heat conduction software: Thermo-Mechanical-Metallurgical-Finite element (TmmFe), Solid Edge V 18.0(Modelling and Assembly), MATLAB (basics)
Personal Traits
Pros: candour, focused, good communicator, prioritizing, team worker;
Cons: restless
Publications
Journals:
- Experimental and Machine Learning Investigation of Dry Sliding Wear Behavior in Multiwall Carbon Nanotube Reinforced Stir-Cast Al7475 Alloy, KB Yuvaraj, Vignesh Nayak Ullal, BJ Manujesh, BV Manojkumar, Sooraj Mohan, P Dinesha, Journal of Materials Research and Technology, 2026, 41, 1368-1380, https://doi.org/10.1016/j.jmrt.2025.12.084
- Optimisation of Drilling Parameters to Minimize Delamination in CNT-Filled GFRP Composites Using Machine Learning, KP Aveen, Vignesh Nayak Ullal, Pranesh Rao KM, HT Shivaramu, CM Shashikumar, Applications in Engineering Science 23, 2025, 25, Pages 7, https://doi.org/10.1016/j.apples.2025.100257
- Wear debris analysis of Al-Si/MWCNT nanocomposite during dry sliding wear tests, HT Shivaramu, Vignesh Nayak, KS Umashankar, Engineering Research Express, 2024, 6(2), 10.1088/2631-8695/ad4cb0
- Study on Corrosion Behaviour of Dip Coating of Zinc on Mild Steel, Mohan Kumar, Vighnesh Nayak Ullal, Neelakantha V. Londe, Kaushik Shetty, Gajanan M. Naik, Pranav Reddy K., Journal of Mines, Metals & Fuels, 2023, 71(7), 908-911, 10.18311/jmmf/2023/34732
- A Preparation and Performance Investigation of Al2O3, TiO2 and Gr Nanoparticles Dispersed Waste Fish Oil (WFO) Biodiesel, HT Shivaramu, U Vignesh Nayak, KP Avven, Irwin Felix D’Souza, TC Kumar, Journal of Mines, Metals & Fuels, 2023, 71(11), 2038-2043, 18311/jmmf/2023/36052
- Effect of aluminium filler concentration on delamination in GFRP composite with optimized machining conditions using ANN-genetic algorithm, Aveen K P, Neelakantha V Londe, Vignesh Nayak Ullal and Pranesh Rao K M, Engineering Research Express, (2023), 5(1), Pages 11, 10.1088/2631-8695/acc2a1
- Rice husk ash utilization, composition and properties: A brief review, Vignesh Nayak, Shivaramu Thimmegowda, and Aveen K P, Journal of Metals Materials and Mining, (2022), 32(4), 37-46, 10.55713/jmmm.v32i4.1544
- Influence of process variables on wear testing of aluminium-silicon/multi-walled carbon nanotubes nanocomposites, HT Shivaramu, V Nayak, KS Umashankar, Engineering Research Express, 4 (4), 045005, doi:10.1088/2631-8695/ac9aa1
- The Effect of Nanocoatings on Critical Heat Flux (CHF) under pool boiling conditions, Sadhgun Reddy, K. Narayan Prabhu, and U. Vignesh Nayak, J. Mat. Perform. and Charact., (2020), 10(1), 532-537, doi:10.1520/MPC20200199 (Impact factor: 0.67)
- Dry Sliding Wear Characteristics of Multi Walled Carbon Nanotubes Reinforced Al-Si (LM6) Alloy Nanocomposites Produced by Powder Metallurgy Technique, T H Shivaramu, U V Nayak and K S Umashankar, Mat. Res. Exp., ISSN: 2053-1591, (2020), 7, 10.1088/2053-1591/ab825c. (Impact factor: 0.5)
- Quench Cooling Performance–Hardness Correlation for AISI 1045 and 1090 Steels, U V Nayak and K N Prabhu., Mater. Perform. Charact., ISSN:2379-1365, (2019), 8(1), 135-150, https://doi.org/10.1520/MPC20180138. (Impact factor: 0.67)
- Heat Transfer during quenching in graphene and MWCNT nanofluids under agitated
quench conditions, U V Nayak and K N Prabhu., Journal of Nanofluids., ISSN: 2169432X ,(2019), 8(6), 1222-1239, https://doi.org/10.1166/jon.2019.1680. (impact factor: 1.79) - Comparison of Cooling Behaviour of Carbon Steels in Polymer, Oil and Carbonated Quench Media, N G Mathews, K M P Rao, U V Nayak and K N Prabhu., Trans. Of Indian Ins. Of Met., ISSN: 09722815, (2019), 72, 1405–1408, https://doi.org/10.1007/s12666-018-1542-2. (Impact Factor: 1.27)
- Heat transfer during quenching of inconel probes in non-edible vegetable oils, U V Nayak and K N Prabhu., HTM J. Heat Treatm. Mat., ISSN: 18672493, (2018), 5, 283- 291, DOI:10.3139/105.110365. (Impact factor: 0.54).
- Effect of section thickness on heat transfer during quenching in vegetable oils, U V Nayak and K N Prabhu., Mater. Perform. Charact., ISSN:2379-1365, (2018), 7(1), 384-doi:10.1520/MPC20180084. (Impact factor: 0.67)
- Assessment of spatiotemporal heat flux during quenching in TiO2 and AlN Nanofluids, U V Nayak and K N Prabhu., Mater. Perform. Charact.,
ISSN:2379-1365, (2017), 6(5), 745–756, https://doi.org/10.1520/MPC20170002. (Impact factor: 0.67) - Carbonated aqueous media for quench heat treatment of steels, U V Nayak, K M P Rao, M A Pai and K N Prabhu., JMEP, ISSN: 1059-9495, (2016), 25, 3802–3810, https://doi.org/10.1007/s11665-016-2183-4. (Impact factor: 1.652).
- Wetting behavior and heat transfer of aqueous graphene nanofluids, U V Nayak and K N Prabhu., JMEP, ISSN: 1059-9495, (2016), 25, 1474–1480,
https://doi.org/10.1007/s11665-016-1962-2. (Impact factor: 1.652). - Heat transfer and quench performance of aqueous CuO nanofluids during immersion quenching, U V Nayak and K N Prabhu., Int. J. Microstruct. Mater. Prop., ISSN: 17418410, (2016), 11, 186–202, https://doi.org/10.1504/IJMMP.2016.079139. (Impact factor: 0.45).
- Wetting kinematics and cooling performance of PAG polymer quenchants, U V Nayak, M A Pai, K M P Rao, and K N Prabhu., Mater. Sci. Forum, ISSN: 0255-5476, (2015), 830– 831, 156–159. doi:10.4028/www.scientific.net/MSF.830-831.156. (Impact factor: 0.35).
- Heat transfer during immersion quenching in MWCNT nanofluids, U V Nayak and K N Prabhu., Mater. Sci. Forum, ISSN: 0255-5476, (2015), 830– 831, 172–176. doi:10.4028/www.scientific.net/MSF.830-831.156. (Impact factor: 0.35).
- Wetting Behavior and Evolution of Microstructure of Sn–3.5Ag Solder Alloy on Electroplated 304 Stainless Steel Substrates, V U Nayak, K N Prabhu, N Stanford and , Trans. Of Indian Ins. Of Met., ISSN: 09722815, (2012), 65, 713–717, https://doi.org/10.1007/s12666-012-0193-y. (Impact Factor: 1.27)
Conferences:
- Augustine Samuel, U. Vignesh Nayak, K.M. Pranesh Rao, K Narayan Prabhu, (2023) ‘Estimation of Heat Flux Transient During Quench Hardening of Varying Diameter Steel Probes Using IHCP-Phase Transformation Coupled Model’, Heat Treat 2023: Proceedings of the 32nd ASM Heat Treating Society Conference, October 17–19, 2023, Detroit, Michigan, USA, https://doi.org/10.31399/asm.cp.ht2023p0088
- Vignesh Nayak U and Narayan Pabhu K., (2014) ‘Assessment of heat transfer in MWCNT-water nanofluids for quench heat treatment’, Proceedings of the 52nd Nat. Meta. Day including the 68th Tech. Meet. on Automotive, Aerospace, Defence and Energy, College of Engineering, Pune, India, 12-15 November 2014.
- Vignesh Nayak, U., and Narayan Prabhu, K., (2017). “Heat flux transients for quenching of 50 and 25 mm Stainless steel in mineral and vegetable oils.” Int. Conf. Adv. Mater. Process. ADMAT, Thiruvananthapuram, Kerala, India, 14-16 December 2017.
- V. Nayak and K.N. Prabhu., (2017). “Comparative Study of the Effect of Section Thickness of Steel during Quenching in Neem and Mineral Oil.”, Proceedings of the 29th Heat Treating Society Conference (HEAT TREAT 2017), Columbus, Ohio, USA, 24 – 26 October 2017.
Book chapter:
- HT Shivaramu, U Vignesh Nayak, V Londe Neelakantha, KS Umashankar, (2023), Chapter 14: Production of Al/MWCNT Nanocomposite by Powder Metallurgy to Enhance Dry Sliding Wear Performance Aided by Design of Experiment in “Structural Composite Materials”, Springer Nature Singapore, Satish Babu Boppana, C. G. Ramachandra, K. Palani Kumar, S. Ramesh, eds., 223-241
- Prabhu, K. N., Nayak U. V., and Rao K. M. P., (2016), Chapter 25: Polymer Quenchants in “Advances in Polymer Materials and Technology.” CRC press, Boca Raton, USA, A. Srinivasan and S. Bandyopadhyay, eds., 709-740.
Awards and Honours
Process Metallurgy, M.Tech:
(i) Sarojini Pillay Gold Medal
(ii) NITK Gold Medal
Merit incentive certificates (B.E.):
(i) Operational research
(ii) Metrology and Measurements lab
Reference
Prof. K. Narayan Prabhu, Dept. of Metallurgical and Materials Engineering, NITK, Surathkal, Mob: 9343560935, email: narayan_prabhu@hotmail.com