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Ajit Kelkar, Ph.D.

Professor & Nanoengineering Department Chair

Phone: 336.285.2864

Fax: 336.500.0115

Email: kelkar@ncat.edu


Dr. Ajit D. Kelkar is a Professor and Chair of Nanoengineering department at Joint School of Nanoscience and Nanoengineering. He also serves as an Associate Director for the Center for Advanced Materials and Smart Structures. For the past twenty five years he has been working in the area of performance evaluation and modeling of polymeric composites and ceramic matrix composites. He has worked with several federal laboratories in the area of fatigue, impact and finite element modeling of woven composites including US Army, US Air force, NASA-Langley Research Center, National science Foundation, Office of Naval Research, and Oak Ridge National Laboratory. In addition he has collaborated with Rice University, Texas A&M University, Tuskegee University, Air Force Institute of Technology, University of Dayton, Florida State University, Prairie View A&M University, University of Delaware, Texas State University, University of Minnesota, University of California, and San Diego. His expertise are in the area of low cost fabrication and processing of woven composites using VARTM process, fatigue and impact testing of composites, analytical modeling of woven composites. Presently he is involved in the development of nano engineered multifunctional materials using XD CNTs and electro spun fiber materials. He is also involved in reengineering of several H-46 and H-47 helicopter components for NAVAIR using out of autoclave processing. In the past he has worked on the one step processing of Composite Armored Vehicle using low cost VARTM method in consortium with University of Delaware-CCM and UC San Diego. In the modeling area he is working on blast simulations for the Humvee vehicles subjected to various TNT blasts loadings and atomistic modeling of polymers embedded with CNTs and alumina nanoparticles. He is also involved in high velocity impact modeling of ceramic matrix composites and polymeric matrix composites embedded with electrospun nanofibers. He has published over two hundred papers in these areas. In addition he has edited a book in the area of Nano Engineered materials. He is member of several professional societies including ASME, SAMPE, AIAA, ASM, and ASEE.

Research Interests

Atomistic Modeling , Nano Engineered Materials,  Eletrospinning, Molecular Dynamic Simulations, Nanotechnology, Multifunctional Materials, Crashworthiness, Low Cost Composite Manufacturing  (VARTM Processing), Mechanical Characterization of Materials including Metals, Polymeric Composites (Tape and Textile), Ceramics and Ceramic Composites, Computer Aided Design and Modeling, Finite Element and Finite Difference Modeling, Numerical Analysis, Fatigue and Impact Modeling and Testing of Polymeric Composites, Ceramic Composites, Textile Composites, Micromechanics Modeling and Testing, Single Fiber Modeling and Testing

Selected Publications

Books:
  • “Nanoengineering of Structural, Functional and Smart Materials”, Mark J Schulz, Ajit D Kelkar and Mannur J Sundaresan, Cat. #: 1653, ISBN: 0849316537, 2005, CRC Press, 712 pages
Book Chapters:
  • Processing, Evaluation and Molecular Simulations in Hybrid Fiber Polymer Composites with Alumina Nanoparticles, Developments in Nanocomposites, Research Publishing Services, Singapore, ISBN 978-981-08-3711-2, 2010, (R. Mohan Ajit D. Kelkar, in print).
  • Chapter 19: Continuum and Atomistic Modeling of Thin Films Subjected to Nanoindentation, J.D. Schall, D.W. Brenner, Ajit D. Kelkar, and R. Gupta, “Nanoengineering of Structural, Functional and Smart Materials”, Cat. #: 1653, ISBN: 0849316537, 2005, CRC Press, 712 pages
  • Chapter 20: Synthesis, Optimization and Characterization of AlN-TiN Thin Film Heterostructures, C.Waters, S.Yarmolenko, J.Sankar, S. Neralla, and Ajit D. Kelkar, “Nanoengineering of Structural, Functional and Smart Materials”, Cat. #: 1653, ISBN: 0849316537, 2005, CRC Press, 712 pages
Journal Articles:
  • Gautam S. Chandekar, Bhushan S. Thatte, and Ajit D. Kelkar, “On the Behavior of Fiberglass Epoxy Composites under Low Velocity Impact Loading,” Advances in Mechanical Engineering, vol. 2010, Article ID 621406, 11 pages, 2010. doi:10.1155/2010/621406
  • Ajit D. Kelkar, R.V. Mohan, R.L. Bolick, S. M. Shendokar, “Effect of Nanoparticles and Nanofibers on Mode I Fracture Toughness of Fiber Glass Reinforced Polymeric Matrix Composites,” Materials Science and Engineering B, Vol. 168, (2010), pp. 85–89
  • O. Akinyede, R. Mohan, Ajit D. Kelkar, J. Sankar, Processing and Thermo-Physical Characterization of Alumina Particulate Reinforced 3-Phase Hybrid Composite Material System, Journal of Advanced Materials,  2010, vol. 42, number 3, pp. 5-19
  • Jitendra S. Tate, Ajit D. Kelkar, and Vinaya A. Kelkar; “Minimizing scatter in load-controlled fatigue test data of textile polymeric composites using statistical techniques”, Journal of Interdisciplinary Mathematics, vol. 12 (2009), No. 2, April 09 p283-292
  • S. Mall, D.W. Katwyk, R.L. Bolick, Ajit D. Kelkar, D.C. Davis, “Tension–compression fatigue behavior of a H-VARTM manufactured unnotched and notched carbon/epoxy composite”, Composite Structures, 90, September 2009, p. 201-207
  • O. Akinyede, R. Mohan, Ajit D. Kelkar, J. Sankar, Static and Fatigue Behavior of Epoxy/Fiberglass Composites Hybridized with Alumina Nanoparticles, Journal of Composite Materials, Vol. 43, No. 7, pp. 769-781, 2009

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Patents

  • H-VARTM Processing, Ronnie Bolick and Ajit D. Kelkar, April 2007, Application number: 12/361,224
Publication number: US 2009/0189320 A1
  • Electrospun Fibers for improving Interlaminar Strength, Ronnie Bolick, Sachin Shendokar and Ajit D. Kelkar, May 2009

Grants

  • Integrating NASA Science, Technology and Research in Undergraduate Curriculum and Training (INSTRUCT), NASA Kennedy Space Center, $1,048573, 01/10-12/12, Ajit D. Kelkar(PI)
  • Durability and Damage Tolerance of Ceramic Matrix Composites (CMCs),Phase II, Clarkson Aerospace, $40,000, 10/10-11/11,  Ajit D. Kelkar(PI)
  • Durability and Damage Tolerance of Ceramic Matrix Composites (CMCs),Phase I, Clarkson Aerospace, $10,566, 10/10-08/11,  Ajit D. Kelkar(PI)
Office Hours

By Appointment

Education

  • Ph.D., Mechanical Engineering, Old Dominion University, Norfolk, Virginia, 1985
  • M.S., Mechanical Engineering, South Dakota State University, South Dakota, 1981
  • B.S., Mechanical Engineering, Poona University, Poona, India, 1975