Academic Profile : Faculty

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Assoc Prof Sunil C. Joshi
Associate Professor, School of Mechanical & Aerospace Engineering
India Connect Program Lead, The India Connect @NTU (IC@N)
External Links
Prof Joshi has been a faculty at the School of Mechanical & Aerospace Engineering since Nov 2000. He was awarded PhD for his work on Composites Manufacturing Processes, by Monash University, Australia in 1999. Prior to that, from 1988 to 1994, he worked as a Scientist at the National Aerospace Laboratories, Bangalore, India, upon completion of his M.Tech. in Aeronautical Engineering from Indian Institute of Bombay (Mumbai). At NTU, Prof Joshi was an integral part of the Singapore’s first microsatellite R&D project, XSAT, which was successfully launched in 2011. He has been PI or co-PI of several R&D projects funded by ASTAR, RSAF, DSTA, as well as, industries, such as ARKEMA and LH. Currently, he has more than 200 research publications (journals, conferences, books, patent) to his credit.

Prof Sunil has worked on several R & D projects funded by external agencies and industries. He was the team leader responsible for designing and developing thermal controls for XSAT, Singapore's first fully designed and built micro-satellite. XSAT was launched successfully in 2011, and has since completed its intended mission. Dr. Sunil has been holding concurrent School Management positions. He was the Assistant Chair (Graduate Studies) from 2014 to 2017, and, the Associate Chair (Academic) from 2017 to 2020. He had chaired the School Accreditation Committee twice, in 2011 and 2016, which worked towards preparing for the full accreditation of the B.Eng. (Aerospace Eng) programme under the Washington Accord.

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His research expertise emcompass - Process modelling for composites, Transition mechanisms in hydrogels, Novel composites, and Thermal controls for micro-satellites.
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The current and past research activities include -

** Numerical simulation and optimization of composites manufacturing processes:
- FE/NCV approach for heat and mass transfer simulation in fabrication assemblies for prepreg moulding,
resin transfer moulding, resin film infusion processes
- Modelling resin curing, mould filling, resin film infusion, polymer crystallization phenomena
- Simulation of pultrusion process for monolithic and sandwich panels
- Optimization of pultrusion parameters including resin shrinkage

** Polymer blends and thermo-sensitive hydrogels:
- Studies on rheological behaviour, shear heating in injection moulding
- Modelling of ceramic tape casting, polymer blends processing, demoulding
- Thermo-reversibility of physical hydrogels
- Simulation of gelation/ degelation of hydrogels
- Fluid uptake and drug release of HPMC tablets

** Design, analysis and testing of thermal controls for micro-satellites:
- Outgassing and surface characterization of thermal control coatings
- Thermal analysis of spacecrafts in orbit
- Modelling for thermal radiation properties of coated substrates
- Plasma-spray coatings
- Thermal vacuum and balance testing of micro-spacecrafts
- Qualification testing of spacecraft test appendages

** Fibre reinforced and other composites:
- Studies on delamination, composite repairs and joints
- Failure analysis of the aircraft tail sections, composite bridge deck sections
- Behaviour of woven composites and FMLs
- Hygrothermal testing of polymer composites
- Nano-engineered composites
- Silica aerogel composites (patent filed, licensed, for its launch media release, visit
  • Polymer Matrix Composites Programme
US 2015/0141533 A1: Silica Aerogel Composite (2017)
Abstract: A method of preparing a silica aerogel composite is provided. The method includes providing an aqueous solution comprising a water soluble polymeric binder and a surfactant, adding a silyl-modified silica aerogel to the aqueous solution to form a mixture, and freeze-drying the mixture under reduced pressure at a temperature sufficient to sublime water in the mixture to obtain the silica aerogel composite. A silica aerogel composite is also provided.