Dr Saranarayanan Ramachandran

Materials Knowledge Exchange Associate

Advanced Forming Research Centre

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Personal statement

Saran Ramachandran is a Materials Knowledge Exchange Associate at the Advanced Forming Research Centre (AFRC) of the National Manufacturing Institute Scotland (NMIS). His research has been focused on materials joining techniques and mechanical metallurgy investigations required for high-fidelity service applications of welded structures. His current position has offered him a valuable opportunity to lead challenging work packages of rotary friction welding projects funded by industrial partners. Furthermore, he has been awarded an industrial-focused collaborative research and design project jointly funded by the Scottish Funding Council and a continuous casting technology provider named Rautomead.

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Area of Expertise

I have a strong background in Materials Engineering, and I have more than eight years of R&D experience in material joining technologies that include Friction Stir Welding, Rotary Friction Welding, Gas Tungsten Arc Welding, and Laser Beam Welding for joining complex dissimilar materials (Magnesium-Titanium and Copper-Stainless steel). Additionally, I also have expertise in materials characterisation, including Optical microscopy, SEM, EDX, EBSD, mechanical testing, and non-contact full-field strain measurement techniques such as Digital Image Correlation (DIC). I have a PhD degree in Mechanical Engineering (Materials joining and Characterisation) which was awarded by the University of Southampton. My PhD research delivered a novel high-fidelity experimental methodology to assess the local material response (stress-strain behaviour) of dissimilar welds using a high-resolution DIC technique. During my Ph.D. research, I have delivered extensive research consultancy services to industry-based clients, which received excellent feedback and income to the University. My postdoctoral research project at the University of Manchester has focused on developing a novel soldering process to enable cost-effective high-temperature Pb-free solder interconnects for microelectronics devices. My postdoctoral research involves an in-depth understanding of materials science alongside the application of material characterisation techniques that include small-scale mechanical testing, in-situ synchrotron X-ray imaging, and Electron microscopy techniques to assess the quality of Pb-free solder joints.

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Publications

Investigation of electro-thermo-mechanical degradation and crack propagation of wire bonds in power modules using integrated phase field modelling and finite element analysis
Jiang Han, Liang Shuibao, Xu Yaohua, Ramachandran Saranarayanan
IEEE Transactions on Power Electronics Vol 40, pp. 3600-3609 (2025)
https://doi.org/10.1109/tpel.2024.3496542
Study on thermomigration-induced void formation in advanced copper interconnects
Liang Shuibao, Jiang Han, Zhou Rongxin, Xu Yaohua, Ramachandran Saranarayanan
IEEE Transactions on Components, Packaging and Manufacturing Technology (2025)
https://doi.org/10.1109/tcpmt.2025.3530423
Investigation of effects of porosity and coarsening on thermal and mechanical properties of sintered silver die attachment
Jiang Han, Liang Shuibao, Xu Yaohua, Ramachandran Saranarayanan
IEEE Transactions on Electron Devices Vol 71, pp. 5603-5608 (2024)
https://doi.org/10.1109/ted.2024.3421183
Insights into the grain orientation effect on electromigration-induced failure in solder interconnects through phase field modeling
Liang Shuibao, Jiang Han, Zhong Zhihong, Ramachandran Saranarayanan
IEEE Transactions on Electron Devices Vol 71, pp. 192-199 (2024)
https://doi.org/10.1109/TED.2023.3309280
Solidification microstructure variations in additively manufactured Ti-6Al-4V using laser powder bed fusion
Yang Lu, Ramachandran Saranarayanan, Bagasol Axieh, Guan Qiyu, Wang Weiguang, Browne David J, Dowling Denis, Mirihanage Wajira
Scripta Materialia Vol 231 (2023)
https://doi.org/10.1016/j.scriptamat.2023.115430
The influence of a large build area on the microstructure and mechanical properties of PBF-LB Ti-6Al-4 V alloy
Bagasol Axieh Joy I, Kaschel Federico R, Ramachandran Saranarayanan, Mirihanage Wajira, Browne David J, Dowling Denis P
The International Journal of Advanced Manufacturing Technology Vol 125, pp. 1355-1369 (2023)
https://doi.org/10.1007/s00170-022-10671-9

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Research Interests

  • Welding of materials with dissimilar properties
  • Non-Destructive Evaluation
  • In-process weld quality assessment through imaging techniques
  • In-situ X-ray imaging
  • Quasi Ambient Bonding
  • Mechanical metallurgy
  • Structure-property correlation
  • Sensor-driven Manufacturing
  • Metal additive manufacturing

Projects

AFRC-CRAD-06321 RFW: Rotary Friction Welding of CuCrZr for Novel Hote End Nose
Ramachandran, Saranarayanan (Principal Investigator) Easton, David (Co-investigator)
06-Jan-2023 - 28-Jan-2023
AFRC-DIRF-1902 RFW CAJORR Fundamentals
Fabris, Mathieu (CoPI) Da Silva, Laurie (Researcher) Ferguson, Matthew (CoPI) Ramachandran, Saranarayanan (Researcher)
research work carried out for Rolls-Royce on the rotary friction welding process and post-weld assessment of the material. Project value: £205,592
01-Jan-2021 - 15-Jan-2023

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Contact

Dr Saranarayanan Ramachandran
Materials Knowledge Exchange Associate
Advanced Forming Research Centre

Email: saranarayanan.ramachandran@strath.ac.uk
Tel: Unlisted