Dr. Aniruddha Ram H R

@jyothyit.ac.in

Assistant Professor, Department of Mechanical Engineering
Jyothy Institute of Technology

Dr. Aniruddha Ram H R


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https://researchid.co/aniruddharamhr

EDUCATION

Ph.D, MSc(Engineering), B.E

RESEARCH INTERESTS

CALPHAD, Phase Tranformations, Nanomaterials, Nanothermodynamics, Composite Materials
9

Scopus Publications

341

Scholar Citations

6

Scholar h-index

6

Scholar i10-index

Scopus Publications

  • Impact of Carbon Nanofiber Fillers on Surface Finish and Dimensional Accuracy in FDM-printed Polymer Composites Parts
    N. Hemanth Kumar, R. Keshavamurthy, H. Adarsha, H. R. Aniruddha Ram, Vivek Bhandarkar
    Journal of Advanced Manufacturing Systems, 2026
    This paper examines the effect of carbon nanofiber (CNF) reinforcement on the surface finish and dimensional accuracy of the polylactic acid (PLA) composite produced using fused deposition modeling (FDM). Twin-screw compounding was used to prepare PLA-CNF composite filaments with 0–3[Formula: see text]wt.% CNF with extrusion of filaments ([Formula: see text]/[Formula: see text] ratio 30:1, 120[Formula: see text]rpm). To prepare rectangular specimens ([Formula: see text][Formula: see text]mm), the filaments were printed with the nozzle size of 0.4 mm, the layer thickness of 0.1 mm, the infill density of 100%, and the print speed of 5 mm/s. Dimensional accuracy was assessed by a digital vernier caliper with a resolution of ±0.01 mm, and surface roughness (Ra) was measured by a digital surface tester that was stylus-based. Every measurement was averaged three times, and the statistical examination of percent deviation and variance analysis of compositions was done. Findings show that CNF addition was important with respect to the dimensional stability and surface finish. The volume variation of the print decreased to 0.20% of PLA/3 wt.% CNF compared to 0.30% of neat PLA, which is a 33% smaller variation of the dimensional accuracy. The surface roughness also reduced as 0.70 [Formula: see text]m of neat PLA was reduced to 0.42 [Formula: see text]m of PLA/3 wt.% CNF, which is a 40% decrease. It was statistically tested that trends of consistent improvement were observed between compositions. The findings indicate that CNF reinforcement results in a higher level of geometric accuracy and less surface morphology in FDM-printed polymer composites.
  • Comparing Thermodynamic and Surface Energy models to evaluate and reassess Copper-Nickel bulk and Nano Phase Diagrams
    H.R. Aniruddha. Ram, Krishna Venkatesh, K Gopalakrishna, K.T. Kashyap, K.S. Sridhar
    Iop Conference Series Materials Science and Engineering, 2019
    In the present work, Cu-Ni phase diagram is evaluated and assessed using the CALPHAD method for the accurate prediction of liquidus and solidus curves. Phase diagrams were plotted for both bulk and nanoalloys. Phase diagrams for nanoparticles are significantly different from that of the bulk because the melting point of the nanoparticle is a function of particle size. The melting point of the nanoparticle is determined using two different models, Surface Energy model and Enthalpy and Entropy model. Phase diagrams were plotted using both models for Copper-Nickel binary isomorphous system and were compared with the experimental data. It was found that the Enthalpy and Entropy model is in good agreement with the experimental data compared to the Surface Energy model. This is because the Enthalpy and Entropy model considers the thermal interactions at various temperatures whereas the surface energy model only considers the surface free energy of the particle. Also, Enthalpy and Entropy model is a dynamic model because it can predict the melting enthalpy and entropy of the nanoparticles for various particle sizes which result in accurate free energies predictions. Hence, phase diagrams that are predicted using Enthalpy and Entropy model tend to be more accurate than that of the surface energy model.
  • Merging of Solidus and Liquidus Curves in Copper–Nickel Nanophase Diagram due to Segregation
    H. R. Aniruddha Ram, Krishna Venkatesh, K. Gopalakrishna, K. T. Kashyap, K. S. Sridhar
    Journal of the Institution of Engineers India Series D, 2019
  • Experimental and theoretical prediction of Copper-Nickel nano-phase diagram
    H R Aniruddha Ram, K T Kashyap, K S Sridhar, Krishna Venkatesh, K Gopalakrishna, R Keshavamurthy
    Materials Research Express, 2019
    Copper and Nickel alloys form binary isomorphous system with a symmetric lens shaped curve formed by solidus and liquidus. This shape and size of the solidus and liquidus curves are altered by the particle size. This effect is greatly enhanced if the particle size is less than 100 nm. In the present work, phase diagram is predicted for nanoparticles considering Copper and Nickel and is compared with the experimental results. Copper and Nickel nanoparticles were procured and were characterized for the particle morphology and size using TEM, FE-SEM and XRD. The nanoparticles were also subjected to DSC analysis to find the melting point. The nanoparticles were blended in a high energy ball-mill for various compositions. The blending was carried out for different time intervals and was characterized using XRD to find the effective alloying time. The blended nanoparticles after effective alloying were subjected to DSC analysis to experimentally determine the solidus and liquidus points for various compositions. Phase diagram was determined experimentally and was compared with the theoretical prediction. GTE model and E&E models were used to predict the phase diagram for nanoparticles and was compared with the experimental results. It was found that the E&E model acurately predicts the nano phase diagram for Cu–Ni system with an error of 2% for 89 wt% Cu-11 wt% Ni alloy.
  • Enhanced precipitation nucleation rates in MWCNT reinforced aluminium alloy 6061 nanocomposites
    H. R. Aniruddha Ram, K. T. Kashyap
    Transactions of the Indian Institute of Metals, 2014
  • Influence of multiwalled carbon nanotubes on the aging behavior of AA 6061 alloy matrix nanocomposites
    H. R. Aniruddha Ram, Praveennath G. Koppad, K. T. Kashyap
    Transactions of the Indian Institute of Metals, 2014
  • On shear-lag and thermal mismatch model in multiwalled carbon nanotube/copper matrix nanocomposites
    Praveennath G. Koppad, H.R. Aniruddha Ram, K.T. Kashyap
    Journal of Alloys and Compounds, 2013
  • Nanoindentation studies on MWCNT/aluminum alloy 6061 nanocomposites
    H.R. Aniruddha Ram, Praveennath. G. Koppad, K.T. Kashyap
    Materials Science and Engineering A, 2013
  • Elastic modulus of multiwalled carbon nanotubes reinforced aluminium matrix nanocomposite - A theoretical approach
    K.T. Kashyap, Praveennath G. Koppad, K.B. Puneeth, H.R. Aniruddha Ram, H.M. Mallikarjuna
    Computational Materials Science, 2011

RECENT SCHOLAR PUBLICATIONS

  • Impact of Carbon Nanofiber fillers on Surface Finish and Dimensional Accuracy in FDM-Printed Polymer Composites Parts
    NH Kumar, R Keshavamurthy, H Adarsha, HRA Ram, V Bhandarkar
    Journal of Advanced Manufacturing Systems , 2026
    2026
  • Comparing Thermodynamic and Surface Energy models to evaluate and reassess Copper-Nickel bulk and Nano Phase Diagrams
    HR Aniruddha. Ram, K Venkatesh, K Gopalakrishna, KT Kashyap, ...
    IOP Conference Series: Materials Science and Engineering 577 (1), 012125 , 2019
    2019
  • Experimental and theoretical prediction of Copper-Nickel nano-phase diagram
    HRA Ram, KT Kashyap, KS Sridhar, K Venkatesh, K Gopalakrishna, ...
    Materials Research Express 6 (9), 0950a5 , 2019
    2019
    Citations: 5
  • Merging of Solidus and Liquidus Curves in Copper–Nickel Nanophase Diagram due to Segregation
    HRA Ram, K Venkatesh, K Gopalakrishna, KT Kashyap, KS Sridhar
    Journal of The Institution of Engineers (India): Series D 100 (2), 243–253 , 2019
    2019
    Citations: 3
  • Enhanced precipitation nucleation rates in MWCNT reinforced aluminium alloy 6061 nanocomposites
    HRA Ram, KT Kashyap
    Transactions of the Indian Institute of Metals 67 (5), 651-658 , 2014
    2014
    Citations: 5
  • Influence of multiwalled carbon nanotubes on the aging behavior of AA 6061 alloy matrix nanocomposites
    HR Aniruddha Ram, PG Koppad, KT Kashyap
    Transactions of the Indian Institute of Metals 67 (3), 325-329 , 2014
    2014
    Citations: 20
  • On thermal and electrical properties of multiwalled carbon nanotubes/copper matrix nanocomposites
    PG Koppad, HRA Ram, CS Ramesh, KT Kashyap, RG Koppad
    Journal of Alloys and Compounds 580, 527-532 , 2013
    2013
    Citations: 100
  • On shear-lag and thermal mismatch model in multiwalled carbon nanotube/copper matrix nanocomposites
    PG Koppad, HRA Ram, KT Kashyap
    Journal of Alloys and Compounds 549, 82-87 , 2013
    2013
    Citations: 75
  • Nanoindentation studies on MWCNT/aluminum alloy 6061 nanocomposites
    HRA Ram, PG Koppad, KT Kashyap
    Materials Science and Engineering: A 559, 920-923 , 2013
    2013
    Citations: 49
  • Ageing kinetics in Carbon nanotube reinforced Aluminium alloy AA6063
    KT Kashyap, KB Puneeth, A Ram, PG Koppad
    Materials Science Forum 710, 780-785 , 2012
    2012
    Citations: 25
  • Elastic modulus of multiwalled carbon nanotubes reinforced aluminium matrix nanocomposite–A theoretical approach
    KT Kashyap, PG Koppad, KB Puneeth, HRA Ram, HM Mallikarjuna
    Computational materials science 50 (8), 2493-2495 , 2011
    2011
    Citations: 59

MOST CITED SCHOLAR PUBLICATIONS

  • On thermal and electrical properties of multiwalled carbon nanotubes/copper matrix nanocomposites
    PG Koppad, HRA Ram, CS Ramesh, KT Kashyap, RG Koppad
    Journal of Alloys and Compounds 580, 527-532 , 2013
    2013
    Citations: 100
  • On shear-lag and thermal mismatch model in multiwalled carbon nanotube/copper matrix nanocomposites
    PG Koppad, HRA Ram, KT Kashyap
    Journal of Alloys and Compounds 549, 82-87 , 2013
    2013
    Citations: 75
  • Elastic modulus of multiwalled carbon nanotubes reinforced aluminium matrix nanocomposite–A theoretical approach
    KT Kashyap, PG Koppad, KB Puneeth, HRA Ram, HM Mallikarjuna
    Computational materials science 50 (8), 2493-2495 , 2011
    2011
    Citations: 59
  • Nanoindentation studies on MWCNT/aluminum alloy 6061 nanocomposites
    HRA Ram, PG Koppad, KT Kashyap
    Materials Science and Engineering: A 559, 920-923 , 2013
    2013
    Citations: 49
  • Ageing kinetics in Carbon nanotube reinforced Aluminium alloy AA6063
    KT Kashyap, KB Puneeth, A Ram, PG Koppad
    Materials Science Forum 710, 780-785 , 2012
    2012
    Citations: 25
  • Influence of multiwalled carbon nanotubes on the aging behavior of AA 6061 alloy matrix nanocomposites
    HR Aniruddha Ram, PG Koppad, KT Kashyap
    Transactions of the Indian Institute of Metals 67 (3), 325-329 , 2014
    2014
    Citations: 20
  • Experimental and theoretical prediction of Copper-Nickel nano-phase diagram
    HRA Ram, KT Kashyap, KS Sridhar, K Venkatesh, K Gopalakrishna, ...
    Materials Research Express 6 (9), 0950a5 , 2019
    2019
    Citations: 5
  • Enhanced precipitation nucleation rates in MWCNT reinforced aluminium alloy 6061 nanocomposites
    HRA Ram, KT Kashyap
    Transactions of the Indian Institute of Metals 67 (5), 651-658 , 2014
    2014
    Citations: 5
  • Merging of Solidus and Liquidus Curves in Copper–Nickel Nanophase Diagram due to Segregation
    HRA Ram, K Venkatesh, K Gopalakrishna, KT Kashyap, KS Sridhar
    Journal of The Institution of Engineers (India): Series D 100 (2), 243–253 , 2019
    2019
    Citations: 3
  • Impact of Carbon Nanofiber fillers on Surface Finish and Dimensional Accuracy in FDM-Printed Polymer Composites Parts
    NH Kumar, R Keshavamurthy, H Adarsha, HRA Ram, V Bhandarkar
    Journal of Advanced Manufacturing Systems , 2026
    2026
  • Comparing Thermodynamic and Surface Energy models to evaluate and reassess Copper-Nickel bulk and Nano Phase Diagrams
    HR Aniruddha. Ram, K Venkatesh, K Gopalakrishna, KT Kashyap, ...
    IOP Conference Series: Materials Science and Engineering 577 (1), 012125 , 2019
    2019