IISc Bangalore

Suhasini Gururaja

Associate Professor
Structures
Email: suhasini[at]iisc.ac.in
Office Phone Number: +91-80-22933028
Lab Phone Number: +91-80-22932420
Office Room Number: AE 113
Lab Room Number : AE 130

 

Education

Ph.D. (Mechanical Engineering), University of Washington, Seattle, USA (2008)
M.S. (Structural Engineering), University of Iowa, Iowa City, USA (2003)
B.Tech. (Civil Engineering), Indian Institute of Technology, Kharagpur (2001)

Experience

Associate  Professor, Aerospace Engineering, IISc Bangalore (2016 – present)
Assistant Professor, Aerospace Engineering, IISc Bangalore (2010 – 2016)
Research Engineer, GE Global Research, Bangalore, India (May 2010 – Aug 2010)
Structural Analyst, The Boeing Company, Everett, WA, USA (Oct 2007 – May 2010)

Research Interests

Mechanics of Composite Materials

Research Statement

Our group is primarily interested in understanding the long-term sustainability of composite aerostructures in relation to their processing and secondary manufacturing effects. We use analytical, numerical and experimental techniques in good measure to gauge the behavior of composites under various thermo-mechanical stimulation.

Current Projects

  1. Micromechanics of damage development in ceramic matrix composites (CMCs) considering process defects (Pratt&Whitney, USA) 2016 – 2019
  2. Effect of defects and stochastic nature of NDT measurements on lifing of composite aero structures (Boeing, USA) 2018 – 2020
  1. SN Grama, AM Nagaraja, S Gururaja, RV Mohan. Effect of process induced variations on machining characteristics of a model epoxy resin system. Machining Science and Technology. 1-18. 2018
  2. NK Parambil and S Gururaja. Stochastic fiber fragmentation in UD-FRPs under longitudinal loading – A micromechanical analysis. In International Congress on Fracture (ICF); June 18-23, 2017. Rhodes, Greece. 2017
  3. AM Nagaraja, A Udaykumar, S Gururaja. Constituent property evaluation of ceramic matrix composites by nanoindentation. In International Congress on Fracture (ICF); June 18-23, 2017. Rhodes, Greece. 2017
  4. AM Nagaraja, S Kumar, A Udaykumar, S Gururaja. Statistical strength distribution in CVI processed ceramic matrix composite with BN interphase. In International Congress on Fracture (ICF); June 18-23, 2017. Rhodes, Greece. 2017
  5. S Kubher and S Gururaja. Orthogonal machining damage development in CFRPs considering temperature effects. In International Congress on Fracture (ICF); June 18-23, 2017. Rhodes, Greece. 2017
  6. N Jagannathan, S Gururaja, CM Manjunatha. Matrix crack evolution in multi-directional composite laminates considering thickness effects. Advanced Composite Materials. 1-19. 2017
  7. J Saoudi, R Zitoune, S Gururaja, M Salem, S Mezleni. Analytical and experimental investigation of the delamination during drilling of composite structures with core drill made of diamond grits: X-ray tomography analysis. Journal of Composite Materials. 2017
  8. NK Parambil, S Gururaja. Micro-scale progressive damage development in polymer composites under longitudinal loading. Mechanics of Materials. 111. 21-34. 2017
  9. JR Pothnis, AR Anilchandra, G Hegde and S Gururaja. Mechanical and electrical property characterization of low-cost porous nano particles reinforced epoxy. In INCCOM - 15. March 2-3, 2017. NAL Bangalore. 2017
  10. NK Parambil and S Gururaja. Multiscale damage development in polymer composite laminates. AIAA-2017-0658. In SciTech 2017, 58th AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, January 9-13. Grapevine, TX, USA. 2017
  11. T Arabatti, NK Parambil and S Gururaja. Micromechanics of damage development in polymer composites. Applied Composite Letters. 25. 3. 56-62. 2016
  12. J Saoudi, Z Redouane, S Gururaja, M Salah, A Hejjaji. Prediction of critical thrust force for exit-ply delamination during drilling composite laminates: Thermo-mechanical analysis. International Journal of Machining and Machinability of Materials. 18. 1. 2016
  13. A Hejjaji, D Singh, S Kubher, D Kalyanasundaram and S Gururaja. Investigation of composite machining damage quantification: Laser versus conventional drilling. Composites Part A. 2016. 82. 2016
  14. J Saoudi, R Zitoune, S Mezlini, S Gururaja and P Seitier. Exit ply delamination in CFRP laminates considering thermal effects. Composite Structures. 2016. 153. 2016
  15. N Jagannathan, S Gururaja, CM Manjunatha. Probabilistic strength based matrix crack evolution in multi-directional composite laminates. Composites Part B. 87. 263-273. 2016
  16. NK Parambil and S Gururaja. Damage onset and evolution in polymer composites considering spatial variation of fibers. Journal of Composite Materials. 2016;50(21). 2016
  17. Agarwal H, Hejaji A, Jamthe Y, Gururaja S. An investigation of cutting mechanisms and strain fields during orthogonal cutting in CFRPs. Machining Science and Technology: An International Journal. 2015;19(3). 2015
  18. C Arulappan, A Duraisamy, D Adhikari and S Gururaja. Process monitoring studies of VARTM for different geometries. Journal of Reinforced Plastics and Composites. 2015;34(1). 2015
  19. D Adhikari, S Gururaja. Flow modelling simulation of VARTM in the presence of HPM, IMECE2014-37628. In ASME-IMECE. Montreal, Canada. 2014
  20. H Agarwal and S Gururaja. 3D FEM of orthogonal cutting of Idealized CFRP Plates, IMECE2014-37631. In ASME-IMECE. Montreal, Canada. 2014
  21. A Sudhir, AM Nagaraja and S Gururaja. Effective mechanical properties of C/C composites, IMECE2014-36583. In ASME-IMECE. Montreal, Canada. 2014
  22. T Arabatti, A Sudhir, S Gururaja. Micromechanics of damage development in polymer composites IMECE2014-36580. In ASME-IMECE. Montreal, Canada. 2014
  23. S Gururaja, M Ramulu and W Pedersen. Machining of MMCs – A Review. Machining Science and Technology. 2013;17(1). 2013
  24. V Srinivasmurthy, S Gururaja. Physics based modelling of polymer composite manufacturing. In 4th International Conference on Recent Advances in Composite Materials (ICRACM-2013). 2013
  25. A Bhakta, V Srinivasmurthy, B Nuggehalli, S Gururaja. Effect of cryogenic treatment on tensile properties of CFRPs. In 4th International Conference on Recent Advances in Composite Materials (ICRACM-2013). In 4th International Conference on Recent Advances in Composite Materials (ICRACM-2013). 2013
  26. MA Ansari, S Gururaja. Delamination modeling in noodle region of composite T-joints, AIAA 2013-1767. In 54th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference. 2013
  27. R Hundekari, S Gururaja. Low Velocity Impact Damage on CFRPs: A Parametric Study IMECE2012-86228. In ASME 2012 International Mechanical Engineering Congress & Exposition. 2012
  28. S Gururaja, M Ramulu. Analytical formulation of subsurface stresses during orthogonal cutting of FRPs. Composites Part A: Applied Science and Manufacturing. 2010;41(9). 2010
  29. D Kim, YH Kim, S Gururaja and M Ramulu. Processing and fiber content effects on machinability of compression moulded random direction short GFRP composites. International Journal of Automotive Technology. 2010;11(6). 2010
  30. S Gururaja, M Ramulu. Stress Analysis in Cutting of Composites. In Proceedings of SAMPE New Materials and Processes for a New Economy. 2010
  31. M Ramulu and S Gururaja. Recent developments in machining advanced composite systems. In Proceedings of 3rd International and 24th India Manufacturing Technology, Design and Research Conference. 2010
  32. S Gururaja and M Ramulu . Modified exit-ply delamination drill model for FRPs. Journal of Composite Materials. 43. 5. 483-500. 2009
  33. S Gururaja, M Ramulu. Failure analysis of a fibrous composite half-space subjected to uniform surface line load. ASME Journal of Engineering Materials and Technology. 2009;131(2). 2009
  34. S Gururaja, M Ramulu. Understanding Issues in Machining FRPs using Analytical techniques. In Proceedings of 2nd International and 23rd India Manufacturing Technology, Design and Research Conference.. IIT Madras, Chennai, India. 2008
  35. S Gururaja, M Taya M, YS Kang. Design of Ferromagnetic Shape Memory Alloy Composites made of Fe and TiNi powders. Journal of Applied Physics. 2007;102(6). 2007
  36. M Ramulu and S Gururaja. Tool wear studies in machining fiber reinforced composites. In International Conference on Tribology in Manufacturing Processes (ICTMP). Yokohama, Japan. 2007
  37. S Gururaja, M Ramulu. Failure analysis of a fibrous composite half-space subjected to uniform surface line load, IMECE 2007-42569. In ASME-IMECE. 2007
  38. M Taya, S Gururaja, OC Namli, JK Lee. Design of active composites. In Proceedings of SPIE 2007 – Behavior and Mechanics of Multifunctional Composites Conference. 2007
  39. S Gururaja, M Ramulu. Stress distribution due to inclined line loads in fibrous polymer composites. In Proceedings of ICCES Conference. 2007
  40. S Gururaja, M Taya, H Nakeyama. Processing of Ferro-magnetic Shape Memory Alloy (Fe-NiTi) composite using Spark Plasma Sintering. In Proceedings of SPIE – The International Society for Optical Engineering. 2006
  41. S Gururaja, HJ Kim, CC Swan, RA Brand and RS Lakes. Modeling deformation-induced fluid flow in cortical bone’s canalicular-lacunar system. Annals of Biomedical Engineering. 33. 1. 2005
  42. S Gururaja, M Taya, H Nakayama, YS Kang, A Kawasaki, Y Sutou. Effective magnetic properties of Fe-NiTi (FSMA) particulate composite. In Proceedings of SPIE – The International Society for Optical Engineering, Smart Structures and Materials 2005 – Active Materials: Behavior and Mechanics. SPIE. 2005

Ph.D.

  1. Nithin K. Parambil 2018 Micromechanical modeling of damage in polymer composites
  2. Debabrata Adhikari (2012 – present) Process modeling of liquid composite molding technique
  3. N. Jagannathan (2012 – present) Life prediction in MD-FRPs (Currently working in National Aerospace Labs (NAL), Bangalore, India)
  4. Mayur Gopal Godbole (2014 – present) Effect of fabric shear on dual scale permeability under different compaction pressures (Currently working in Research and Development Establishment (Engineers), DRDO Lab, Pune, India)
  5. Sagar Khuber (2015 – present) End milling and surface milling of CFRPs and sandwich composites
  6. Abhilash M. Nagaraja (2015 – present) Micromechanics of damage development in ceramic matrix composites (CMCs) considering process defects
  7. Jayaram Pothnis (2016 – present) Development of variable density composites using Electric field guided assembly
  8. Shashidhar Krishnappa (2016 – present) Lifing of polymer composite structures considering multi-scale damage mechanisms in the presence of process defects

M.Sc. (Engineering)

  1. Harshit Agarwal 2014 Orthogonal cutting of idealized CFRP laminates. (Currently pursuing Ph.D. at University of Illinois at Urbana Champagne, USA)
  2. Aswathi Sudhir 2014 Micromechanical modeling of C/C composites. (Currently pursuing Ph.D. at University of Texas, A&M)
  3. Brindaban Mahto 2018 Quantification of cure residual stresses in polymer composites In progress. (Currently working in ISRO, Bangalore, India)

M.Tech.

  1. Shyam Kishore 2017 Tensile testing of CMC minicomposites (Currently working in Gas Turbine Research Establishment (GTRE), DRDO, Bangalore, India
  2. Amar Varma 2017 Effect of microstructure on machinability of particulate composites (Currently working in Tata Materials, Bangalore, India)
  3. Krishna Kumaran 2017 Interface characterization in polymer matrix composites (Currently working in Eaton, Pune, India)
  4. Sreenath Bhat 2016 Evolution of matrix cracking in MD laminates using probabilistic energy based approach under static loading. Winner of D. Narayanamurti Medal for Best M.E. Student 2016. (Currently working in DRDO, Bangalore, India)
  5. Rashmi Dupally 2016 Experimental characterization of permeability with preform relaxation during VARTM. (Currently working in Advanced Systems Lab (ASL), DRDO, Hyderabad, India)
  6. Rizwan Pathan 2016 Effect of fiber misalignments on the constitutive response of UD-FRPs – A micromechanical analysis. (Currently working in Tata Advanced Materials Lab, Pune, India)
  7. Sandhya Ramesh 2015 Drilling induced exit-ply delamination model for MD-FRPs considering torque. (Currently working in Rolls-Royce, Bangalore, India)
  8. Chitra Arulapan 2014 An experimental study of pressure and thickness profile in VARTM. (Currently working in Airbus, Bangalore, India)
  9. Rohit Pandita 2014 Free edge stresses in composite laminates. (Currently working in Eaton, Pune, India)
  10.  Yogesh Jamthe 2013 Orthogonal cutting of idealized CFRP plates: An experimental study. (Currently working in VSSC, ISRO, Trivandaram, India)
  11. Rashmi Hundekari 2012 Onset prediction and quantification of low velocity impact (LVI) damage of Fiber Reinforced Plastics (FRPS): A parametric study. (Currently working in NAL, Bangalore, India)
  12. Alauddin M Ansari 2012 Stress analysis of noodle region in CFRP T-stiffeners.

Interns

  1. Arka Bhakta Summer 2012 Effect of cryogenic treatment on tensile properties of CFRPs, IIT Guwahati. (Currently pursuing Ph.D. in Ecole Nantes, France)
  2. S. Sriram Summer 2013 Determination of subsurface strains during orthogonal cutting using a shaper NIT Trichy.
  3. Amlan Das Summer 2014 Identification of fiber misalignments in UD-CFRPs using optical microscopy.
  4. Saikiran Gopalakrishnan Summer 2015 Study of acoustic liners for jet engines. Co-supervisor: Dr. Arnab Samanta, Aerospace Engineering, IISc Bangalore.
  5. Parshuram Sampath Summer 2015 Mechanical property characterization of UD-CFRP laminates processed using VARTM.

Project Assistants/Associates/Post Docs

  1. Dr. Dhiraj Kumar 2017 – present
  2. Dr. Kavitha Aradhya 2017 – 2018
  3. Prajakta Prabhune 2016 – 2017 Open hole fatigue testing of CFRP laminates: Laser versus conventional drilling
  4. Chiranthan Ramesh 2015 – 2016 Effective property estimation of hybrid fuzzy-fiber CFRP nanocomposite using micro-mechanical analysis
  5. P. V. Ahsana 2015 – 2016 Permeability and compaction model characterization for VARTM (Currently pursuing Ph.D. at Singapore)
  6. Dr. Srinivas N. Grama 2015 – 2015 Effect of post-cure temperature and cycles on mechanical property development in epoxy (Currently working in Bharat Fritz Werner, Bangalore)
  7. Dr. Fathima Pervaiz 2014 – 2015 Development of smeared crack model for composite laminates (Currently post doc at University of Southhampton)
  8. Akshay Hejjaji 2013 – 2015 Machining of fiber reinforced composites – conventional and laser machining (Currently pursuing Ph.D. at University of Toulouse)
  9. Trupti Arabatti Micromechanics of damage development in polymer composites 2013 – 2015
  10. Abhilash M. N. 2014 – 2015 Characterization of effect of manufacturing processes on mechanical property of PMCs, C/C composites (Currently pursuing Ph.D. at Aerospace Engineering, IISc Bangalore)
  11. Sagar Kubher 2014 – 2015 Development of orthogonal machining model for idealized CFRPs using finite element analysis (Currently pursuing Ph.D. at Aerospace Engineering, IISc Bangalore)
  12. Parashuram Sampath 2014 – 2015 Process modelling of vacuum assisted resin transfer molding using flow tracking, fluid pressure measurements and preform deformation (Currently pursuing Masters at NIT Calicut, Karnataka, India)
  13. Arun Doraiswami 2012 – 2013 Process modelling of vacuum assisted resin transfer molding using flow tracking, fluid pressure measurements and preform deformation (Currently pursuing Masters at McGill University, Canada)
  14. N. Bharath 2012 – 2014 Development of functionalized CNT based nanocomposites using filament winding process (Currently working in AkzoNobel)
  15. Venkatagiri Srinivasmurthy 2011 – 2013 Process modelling of vacuum assisted resin transfer molding using flow tracking, fluid pressure measurements and preform deformation (Currently pursuing Masters at University of Connecticut, USA)