Dr. Ashokraj Jayachandran, Adolf Martens Postdoctoral Fellowship



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Dr. Ashokraj Jayachandran,

Adolf Martens Postdoctoral Fellowship,

Federal Institute for Materials Research and Testing (BAM),

Unter den Eichen 44-46, 12203 Berlin, Germany.

Email: ashoktribology@gmail.com and ashok.raj@bam.de

Mobile: +49-15216772674




Objective:
Looking for a challenging career in the domain of tribology, coatings, mechanical testing of materials and components, analyze, processing, characterization and mechanical property evaluation of advanced materials.
Research Interest:

All fields of research, including Surface Engineering and Tribology,



  • Nano-Micro-Macro Tribology

  • Coatings and Tribological Coatings

  • Wear and Friction behavior of Diamond-Like Carbon (DLC) Coatings under different lubricated surfaces at elevated temperature.

  • Studies of Tribofilms/ Tribolayers

  • Frictional and wear behavior of materials

  • Tribo-chemical interactions between lubricants and mating surfaces

  • Design, Synthesis, and Characterization of lubricant additives

  • Lubricant Properties at High Pressure

  • Lubricants for higher temperature applications

  • Wear Resistant and Solid Lubricant Coatings

  • Compatibility of Tribological Coatings with Lubricant Additive Packages

  • Self-Lubricating Hard Coatings for Extreme Environments

  • Manufacturing processes for engineering materials

  • Studies of Tribo layers/films and Mechanically Mixed Layers under lubricated and dry sliding conditions.

  • Characterization of Tribofilm and Mechanically Mixed Layers (both mechanical and Materials)

  • Relating Interfaces to Friction and Wear

  • Advanced materials, hard coatings, and composites for tribology applications

  • Surface Functionalization and Characterization

  • Characterization of materials using microscopy and X-ray diffraction

  • Mechanical behavior of materials

  • Structure-property correlations in materials

Academics:

Postdoctoral Fellowship (Adolf Martens Postdoctoral Fellowship-2016), Macro tribology and Wear Protection, Federal Institute for Materials Research and Testing-BAM, Berlin, Germany-12203. (1st November 2016 to 30th October 2017).
Doctor of Philosophy, Tribology, Mechanical Engineering, Indian Institute of Science, Bangalore, India.
M. S (Engg.), Tribology, Mechanical Engineering, Indian Institute of Science, Bangalore, India.
B. Tech, Chemical Engineering, Anna University, Chennai, Tamil Nadu, India.

Thesis Completed:

Postdoctoral Fellow Tribofilm formation and wear of DLC films in the temperature range

from 100 to 250°C in boundary lubrication regime.


Ph.D. Study of synergy between Plastic Deformation Mechanisms,

Tribolayers/Tribofilms and Mechanically Mixed Layers in Tribology of

Ti-6Al-4V slid against SS316L and Alumina under vacuum and ambient

conditions.


M.S (Engg.) Tribological Behaviors (Synergistic effect of Tribo-Chemical Reactions and Strain Rate Response) of Titanium and Its Alloys (Ti-6Al-4V).
B. Tech Development of close pore Aluminium foam.

Career History:


  • Demonstrated the equipment in our laboratory and explaining the scope and interesting features of tribology and allied techniques for graduate students.




  • Demonstrated research expertise in tribology (including Synergistic effect of tribofilms/Tribochemical Reactions and Mechanically Mixed Layers under different environmental conditions and its materials and mechanical characterization).



Expertise and hands on experience in operating the following Materials and Mechanical Characterization equipment’s,
Optical Microscopy (OM), 3D Optical Profilometer, Scanning Electron Microscopy (SEM) with Energy Dispersive X-ray Spectroscopy (EDS), Electron Probe Micro Analyzer (EPMA), Focused Ion Beam (FIB), Atomic Force Microscopy (AFM), Nano-Indentation, Vacuum based High temperature pin on disc tribometer for mechanical and tribological property evaluation, Scratch Testing Machine, Electron Back-Scattered Diffraction (EBSD), X-ray Diffraction (XRD), X-ray Photoelectron Spectroscopy (XPS) and Differential Scanning Calorimeter (DSC).
Student Supervisor: Department of Mechanical Engineering, Indian Institute of Science,

Bangalore, Karnataka, India. August 2010- 2016.



  • Training of Pin on Disk Tribometer (both vertical and horizontal), Scratch Testing Machine and Fretting wear machine to the outside users who makes use of the facility in our laboratory.


Project Supervisor: Department of Mechanical Engineering, Indian Institute of Science,

Bangalore, Karnataka, India. August 2010- 2016.



  • Guided 75 undergraduate students/summer interns for carrying out their final project work at Indian Institute of Science.

  • Most of the group consists of 5-6 members and efficient management skills required for making them work efficiently.


Research Associate: Surface and Sub-Surface Characterization of Holes Drilled/Reamed in

4340M steel and its relation to Mechanical Properties (Boeing



Company Project).

Awards and Honors:


  1. Best thesis award for B. Tech Project, Anna University, Chennai.




  1. Summer research fellowship at Indian Institute of Science, Bangalore, India, 2009.




  1. Best paper award, National Tribology Conference – 2011, December 8-10th, 2011.




  1. Best paper award, 8th International conference on industrial tribology, 7-9th December, 2012.




  1. Best poster award, International Nanotribology Forum: Kerala 2014, 6 –10th January-2014.

  2. Adolf Martens Research Fellowship-2016, Federal Institute for Materials Research and Testing-BAM, Berlin, Germany.

List of Publications:
Journal Publications:


  1. Ashok Raj J, Anirudhan Pottirayil and Satish V. Kailas, Dry Sliding Wear Behavior of Ti-6Al-4V Pin against SS316L Disc at Constant Contact Pressure, ASME Journal of Tribology, 2016. DOI: 10.1115/1.4033363

  2. Ashok Raj J, Satish V. Kailas, Synergistic effect of Plastic Deformation, Tribo Chemical Reaction and Mechanically Mixed Layer on Wear Behavior of Ti-6Al-4V alloy, In progress (Wear).

  3. Ashok Raj J, Satish V. Kailas, Effect of pin diameter and sliding speeds on Formation of Tribo Chemical Reaction and Mechanically Mixed Layer in Ti-6Al-4V slid against SS316L, In progress (ASME Journal of Tribology).

  4. Ashok Raj J, Satish V. Kailas, Wear and friction behavior and its relation to wear debris morphology in dry sliding of Ti-6Al-4V against SS316L, In progress (Tribology International).

  5. Ashok Raj J and Rolf Wäsche, Friction and Wear of a-C:H (DLC) coatings under influence of Temperature under Lubricated Sliding conditions. In progress (Tribology letter).


Conference Publications:


  1. Ashok Raj J, Anindya Deb and Satish V. Kailas, Synergy between tribo-oxidation


Mechanically Mixed Layer (MML) and strain rate response on governing the dry sliding wear behavior of Ti-6Al-4V against SS316L, 40th Leeds- Lyon Symposium on Tribology, 2013, Lyon, France (online).


  1. Ashok Raj J, Anindya Deb and Satish V. Kailas, Effect of strain rate response and pin diameter on mechanically mixed layer formation and wear mechanisms in a Ti-6Al-4V – SS316L pair, Pages 137-138, Proceedings of Malaysian International Tribology Conference 2015, ISBN: 978-967-13625-0-1 (online).




  1. Ashok Raj J and Satish V. Kailas, Tribological behavior of ti-6al-4v sliding against alumina in vacuum, 44th Leeds- Lyon Symposium on Tribology, 2017, Lyon, France (online).




  1. Ashok Raj J and Rolf Wäsche, Sliding wear behavior of DLC under lubricated conditions at elevated temperatures, 44th Leeds- Lyon Symposium on Tribology, 2017, Lyon, France (online).


Invited talks and presentations:

1. Ashok Raj J, Vani Bharatiya, Anindya Deb, Satish V Kailas, Friction and wear of commercially pure titanium and Ti-6Al-4V sliding against SS316L in ambient condition, National Tribology Conference(NTC-2011), Indian Institute of Technology-Roorkee, India, 8-12th December, 2011, Roorkee, India.


2. Ashok Raj J and Satish V Kailas, Friction and wear of aluminium alloy sliding against MS8 at ambient condition, NRC-M Symposium on Mechanical Behaviour of Materials, Indian Institute of Science, Bangalore, 30-31st January, 2012, Bangalore, India.

3. Ashok Raj J, Anindya Deb and Satish V Kailas, Sliding wear behavior of titanium alloy Ti-6Al- 4V at constant pressure under ambient and vacuum conditions, 16th International Conference on Strength of Materials (ICSMA 16), Indian Institute of Science, Bangalore, 19-24th August, 2012, Bangalore, India.


4 Ashok Raj J, Anindya Deb and Satish V Kailas, Synergy between tribo-oxidation Mechanically Mixed Layer (MML) and strain rate response on governing the dry sliding wear behavior of Ti-6Al-4V against SS316L, 40th Leeds- Lyon Symposium on Tribology, LaMCoS (INSA de Lyon) and LTDS (Ecole Centrale de Lyon), 4-6th September, 2013, Lyon, France.
5. Ashok Raj J, Anindya Deb and Satish V Kailas, A Study on Sliding Wear behavior of Ti-6Al-4V against SS316L under Ambient and Vacuum conditions at constant Pressure, World Tribology Congress (WTC-2013), Italian Tribology Association (AIT), 8-13th September, 2013, Torino, Italy.
6 Ajay Kumar, Ashok Raj J, Jagadeesh K. Mannekote, Rishi Raj and Satish V. Kailas, Tribological Performance of a Copper Based Composite Produced by Friction Stir Processing, International Conference on Advances In Tribology [ICAT14], National Institute of Technology, Calicut, February 21-24, 2014, Calicut, India.
7. Ashok Raj J, Anindya Deb and Satish V Kailas, A study on sliding wear behavior of Ti-6Al- 4V against SS316L under ambient conditions at constant pressure, Research in Product Design Symposium (RPD 2014), Centre for Product Design and Manufacturing, Indian Institute of Science, Bangalore, 1-2nd May, 2014, Bangalore, India.
8. Ashok Raj J and Satish V Kailas, Tribological study of Ti-6Al- 4V pin on dry sliding wear against SS316L disk at constant pressure with different speeds, National Tribology Conference, PES University and Tribology Society of India, 15-17th December, 2014, Bangalore, India.
9. Ashok Raj J and Satish V Kailas, The Effect of diameter of the Ti-6Al-4V pin in dry sliding

wear against SS316L at constant pressure, Research in Product Design Symposium (RPD 2015), Centre for Product Design and Manufacturing, Indian Institute of Science, Bangalore,30-31st March, 2015, Bangalore, India.

10. Ashok Raj J and Satish V Kailas, Effect of Strain Rate Response and Pin Diameter on

Mechanically Mixed Layer Formation and Wear Mechanisms in a Ti6Al4V – SS316L pair,

Malaysian International Tribology Conference 2015 (MITC2015), Malaysian Tribology

Society (MYTRIBOS) and International Tribology Council (ITC), 16-17th November 2015,

Penang, Malaysia.

11. Ashok Raj J and Satish Vasu Kailas, Effect of plastic deformation on wear and frictional

behavior–Ti64 pins sliding against alumina in vacuum, TriboUK, Imperial College of London, 27-28th April, 2017, London, UK.

12. Ashok Raj J and Satish Vasu Kailas, Tribological behavior of Ti-6Al-4V sliding against

alumina in vacuum, 44th Leeds- Lyon Symposium on Tribology, LaMCoS (INSA de Lyon)

and LTDS (Ecole Centrale de Lyon), 4-6th September, 2017, Lyon, France.

13. Ashok Raj J and Rolf Wäsche, Sliding wear behavior of DLC under lubricated conditions at

elevated temperatures, 44th Leeds- Lyon Symposium on Tribology, LaMCoS (INSA de

Lyon) and LTDS (Ecole Centrale de Lyon), 4-6th September, 2017, Lyon, France.

Academic Community Activities:



  • Organizer, Student Annual Symposium-2010, Dept. of Mechanical Engineering, Indian Institute of Science, Bangalore, India.




  • Organizing committee, "Recent Advances in Eco-Friendly Lubricants" - RAIEFL-2010, Dept. of Mechanical Engineering, Indian Institute of Science, Bangalore, India.




  • Conference Organizer (Local organizing committee), International Conference on Strength of Materials, (ICSMA-16), 2011, Indian Institute of Science, Bangalore, India.




  • Conference Organizer (Local organizing committee), International Conference on Friction Based Processes (ICFP-1), 2014, Indian Institute of Science, Bangalore, India.




  • Organizing committee, 3rd International Conference on Design Creativity (3rd ICDC)-2015 held at Bangalore, India.




  • Organizing committee, 5th International Conference on Research into Design - 2015 (ICoRD'15), Indian Institute of Science, Bangalore, India.




  • Organizing committee, 8th Summer School on Tribology, Dept. of Mechanical Engineering, Indian Institute of Science, Bangalore, India.


Collaboration Work:



  • Boeing Company-Surface and Sub-Surface Characterization of Holes Drilled/Reamed in 4340M steel and its relation to Mechanical Properties.

  • Aditya Birla and Bajaj company- Materials for brake applications.

  • Government Engineering College, Calicut, India- Wear and friction behavior of steel against aluminium pin under lubricated conditions.

Membership of Professional Bodies/Organization:




  1. Life Member, The American Society of Mechanical Engineers (ASME).

  2. Life Member, Society for Failure Analysis.

  3. Life Member, Tribology Society of India.

  4. Life Member, Italian Tribology Society.

  5. Life Member, Tribology and Lubrication Engineering Society (STLE).


Editorial and reviewer experience


  • Reviewer, ASME Journal of Tribology.

  • Reviewer, Malaysian Tribology Society (Mytribos).

  • Reviewer, Jurnal Tribologi.

Languages


  • Expert level in reading, writing and speaking English.

  • Expert to average level in 4 Indian languages.

  • Interested in learning new languages.

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