Open Positions

PhD positions available immediately. Looking for candidates with a strong background in solid mechanics and finite element analysis. Prior knowledge of polymeric composites and manufacturing will be advantageous.

Latest News

  • [Wisconsin Idea] Dr. Prabhakar selected to participate in the Wisconsin Idea Seminar Tour in May, 2017.
  • [Welcome] Vinay Damodaran (M.S. – University of Michigan, 2015) joined our research group in January 2017 as a doctoral student. Welcome!
  • [ASME Technical Committee Member 2016] Dr. Prabhakar selected as a member of the ASME Aerospace Division – Structures and Materials Committee. Congratulations!
  • [AFOSR-YIP 2015] Dr. Prabhakar is one of the recipients of the AFOSR Young Investigator Award, 2015.
  • [Short Course 2016] Dr. Prabhakar invited to present a short course on “Hybrid Composites: Manufacturing, Mechanics and Materials” sponsored by Global Initiative of Academic Networks (GIAN) – Government of India (GOI) during December 18-22, 2016.
  • [AFRL-SFFP 2016] Dr. Prabhakar selected to participate in the AFRL Summer Faculty Fellowship Program from June-July, 2016 at Wright-Patterson Air Force Base, OH.

 

Research


Free-Edge Effect Modeling – Laminated Composites

EBM Process Modeling – Nickel Superalloys

Thermal Oxidation Modeling – Ceramic Matrix Composites

ZnO Nanowires for Improving Interlaminar Properties

VARTM Process Modeling – Textile Composites

Textile Composites as Potential Cryogenic Tank Materials

People

PRINCIPAL INVESTIGATOR

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Pavana Prabhakar
Assistant Professor of Civil & Env. Engineering & Charle G. Salmon Fellow
Ph.D. Aerospace Engineering, University of Michigan, Ann Arbor, 2013

GRADUATE STUDENTS

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Vinay Damodaran
(PhD,Spring 2017 – )
M.S. Civil and Environmental Engineering, University of Michigan, Ann Arbor
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Alejandra Castellanos
(PhD,Fall 2014 – )
M.S. Mechanical Engineering, University of Texas at El Paso
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Ricardo Garcia
(M.S.,Fall 2015 – )
B.S. Mechanical Engineering, University of Texas at El Paso
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Carlos Garcia
(M.S.,Spring 2016 – )
B.S. Mechanical Engineering, University of Texas at El Paso

Facilities

EQUIPMENT

High Energy Impactor (upto 1800J) w/ Environmental Chamber (-50 to 150 C)

Fatigue Testing Frame w/ Environmental Chamber (-50 to 150 C)

Ultra Low Temperature Freezer 

Fused Deposition Modeling 3D Printer – Lulzbot Taz 6

Publications

Journal Publications

  1. “Influence of Arctic Seawater Exposure on the Flexural Behavior of Woven Carbon/Vinyl Ester Composites”, R.G. Garcia and P. Prabhakar, Journal of Sandwich Structures and Materials, (Minor Revision – Jan 2017)
  2. “Modeling Framework for Free Edge Effects in Laminates under Thermo-Mechanical Loading”, M.S. Islam and P. Prabhakar, Composites Part B: Engineering, Feb 2017. (In Press)[Link]
  3. “Nanowire Reinforcement of Woven Composites for Enhancing Interlaminar Fracture Toughness”, A.G. Castellanos, M.S. Islam, M.A.I. Shuvo, Y. Lin and P. Prabhakar, Journal of Sandwich Structures and Materials, July 2016. [Link]
  4. “Computational Prediction of Thermal Shock Effects on Carbon-Carbon Composites”, A.L. Leanos and P. Prabhakar, Composite Structures, Volume 143, Pages 103-116, 20 May 2016. [Link]
  5. “Investigation of Woven Composites as Potential Cryogenic Tank Materials”, M.S. Islam, E. Melendez-Soto, A.G. Castellanos and P. Prabhakar, Cryogenics, Volume 72, Part 1, Pages 82-89, December 2015. [Link]
  6. “Experimental Investigation of Thermal Shock Effects on Carbon-Carbon Composites”, A.L. Leanos and P. Prabhakar, Composite Structures, Volume 132, Pages 372-383, 15 November 2015. [Link]
  7. “Computational Modeling of Residual Stress Formation during the Electron Beam Melting Process for Inconel 718″, P. Prabhakar, W.J. Sames, R. Dehoff and S.S. Babu, Additive Manufacturing, Volume 7, July 2015, Pages 83-91, 2015. [Link]
  8. “A novel Continuum-decohesive Finite Element Method for Mesh Objective Predictions of Fiber-matrix Splitting Failure”, P. Prabhakar and A.M. Waas, Composites Sciene and Technology, 2013. [Link]
  9. “Micromechanical Modeling to Determine the Compressive Strength and Failure Mode Interaction of Multidirectional Laminates”, P. Prabhakar and A.M. Waas, Composites Part A: Applied Science and Manufacturing , 2013. [Link]
  10. “The Interaction between Kinking and Delamination in the Compression Failure of Fiber Reinforced Composites”, P. Prabhakar and A.M. Waas, Composite Structures, 2012. [Link]
  11. “Upscaling from Micromechanics Model to Capture Laminate Compressive Strength due to Kink Banding Instability”, P. Prabhakar and A.M. Waas, Computational Materials Science, 2012. [Link]

Selected Conference Publications

  1. “Computational modeling of curing induced effects in fiber reinforced laminates”, P. Prabhakar and A.M. Waas, SMART 2013, 6th ECCOMAS Conference on Smart Structures and Materials, Politecnico di Torino, Torino, Italia, 24-26 June, 2013.
  2. “Mesh objective predictions of fiber-matrix splitting failure through a novel continuum-decohesive finite element method”, P. Prabhakar and A.M. Waas, Proceedings of the 54th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, Boston, Massachusetts, USA, April 2013.
  3. “Compressive strength and failure mode prediction in laminated composites with different stacking”, P. Prabhakar and A.M. Waas, Proceedings of the 54th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, Boston, Massachusetts, USA, April 2013.
  4. “Effect of stacking sequence on the compressive strength and failure mode in fiber reinforced multi-directional laminated composites”, P. Prabhakar, A.M. Waas and R. Raveendra, American Society for Composites 27th Technical Conference/ 15th US-Japan Conference on Composite Materials/ ASTM-D30 Meeting, Arlington, Texas, October 2012.
  5. “The Interaction of Failure Modes in the Compression Response and Failure of Laminated Composites” , P. Prabhakar and A.M. Waas, Proceedings of the 53rd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, Honolulu, Hawaii, April 2012.
  6. “Investigation of failure mode interaction in laminated composites subjected to compressive loading”, P. Prabhakar, W.H. Ng, A.M. Waas and R. Raveendra, Proceedings of the 52nd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, Denver, Colorado, USA, April 2011. (AIAA-2011-1792)
  7. “The influence of cohesive zone modeling on the stress field and energy release rates in a cracked elastic body”, P. Prabhakar and A.M. Waas, Proceedings of the 51st AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, Orlando, Florida, USA, April 2010. (AIAA-2010-2616)

Selected Technical/Conference Presentations

  • “Investigation of Compression Strength and Post-Buckling failure in Multi-Directional laminated composites”, P. Prabhakar and A.M. Waas, International Conference on Composites for 21st Century: Current & Future Trends, Indian Institute of Science, Bangalore, India, January 2011.
  • “Interaction between buckling and delamination in compressive failure of fiber reinforced composites”, P. Prabhakar and A.M. Waas, Advanced Topics in Aerospace Materials and Structures III, ASME International Mechanical Engineering Congress & Exposition, Vancouver, British Columbia, Canada, November 2010.
  • “Predicting Compression Strength Allowables of Fiber Reinforced Laminates from Basic Coupon Level Properties”, P. Prabhakar, A. Salvi, and A.M. Waas, Virtual Testing of Composite Materials, ASME International Mechanical Engineering Congress & Exposition, Vancouver, British Columbia, Canada, November 2010.
  • “Analytical and numerical modeling of fiber-pullout and bridging zone micromechanics in fiber reinforced composites”, S.S. Rudraraju, P. Prabhakar, K. Garikipati, A.M. Waas, Proceedings of the 16th US National Congress on Theoretical and Applied Mechanics (USNCTAM), University Park, Pennsylvania, USA, June 2010.

Invited Talks

  1. “Damage and Failure Analysis of Laminated Composites using Advanced Computational Modeling Techniques”, Institut fur Textiltechnik, RWTH Aachen University, June 20th, 2013
  2. “Modeling Damage and Failure in Laminated Composites”, Department of Mechanical Engineering, University of Texas, El Paso, Apr 3rd, 2013.
  3. “Computational Techniques for Modeling Damage and Failure in Laminated Composites”, Mechanical Properties and Mechanics Group Seminar, Materials Science and Technology Division, Oak Ridge National Laboratory, Oct 29th, 2012.

Archived News

News

  • [US-JAPAN 2016] Dr. Prabhakar awarded NSF Travel Grant to present research in the area of composites for cryogenic applications at the 17th US-Japan Conference on Composite Materials, Aug 2-3, Hokkaido, Japan.
  • [DoD Grant 2015] Dr. Prabhakar wins the HBCU/MI DoD Grant to conduct research with the Office of Naval Research (ONR), 2015.
  • [ONR Summer Fellow 2015] Dr. Prabhakar selected as a Summer Fellow for the 2015 Office of Naval Research (ONR) Summer Faculty Research Program, 2015.
  • [Best Student Paper 2014]Mr. Islam wins the Cytec Best Student Paper at the 29th ASC Conference, San Diego, 2014.
  • [ORNL Summer Fellow 2014] Dr. Prabhakar selected for the HBCU/MEI Summer Faculty Fellowship program at Oak Ridge National Lab (ORNL), 2014.
  • [Aachen Fellowship 2013] Dr. Prabhakar awarded the Theodore von Karman Fellowship for Incoming International Scientists at RWTH Aachen University, Germany, June 2013.

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