
Dr Saranarayanan Ramachandran
Materials Knowledge Exchange Associate
Advanced Forming Research Centre
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.
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
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
Contact
Dr
Saranarayanan
Ramachandran
Materials Knowledge Exchange Associate
Advanced Forming Research Centre
Email: saranarayanan.ramachandran@strath.ac.uk
Tel: Unlisted