HONORS AND AWARDS

• 2007 Who's Who Among American Teachers and Educators
• 2006 CAREER Award - National Science Foundation
• 2005 Research Competitiveness Award
  Louisiana Board of Regents
• 2001 DURINT - Nanotechnology Research Award
  (Co-Investigator with Profs. Suresh (PI), Anand and Ying, MIT)
  Office of Naval Research

Our research group's efforts are directed towards understanding the fundamental structure-property relationships in advanced materials over multiple (structural or functional) length-scales, the appropriate contexts for which are formulated by materials issues in the Nanotechnology, Biotechnology and Energy Technology areas.

Examples of important length-scales include:

• Nano structure (as in Nano materials)
• Micro structure (as in Micro electro mechanical systems)
• Macro structure (as in Aircraft structures and biomedical implants)
• Phase structure (as in Composite materials)
• Pole structure (as in Piezoelectric materials)

• Multiphase piezoelectrics: To understand the fundamental electromechanical response of smart composite materials such that sensors and devices with unique functionality for biomedical imaging, structural health monitoring, active vibration control, and energy conversion applications may be developed.
• Nano-indentation: To develop nanotechnology enabled diagnostic tools for the rapid assessment of the mechanical and coupled properties of materials with reduced dimensions such as thin films and MEMS structures.
• Nanomaterials: To characterize the mechanical properties of nanomaterials such that nano-coatings with superior hardness and wear-resistance may be developed.
• Contact mechanics: To identify the fundamental mechanisms of damage initiation under conditions of repeated contact or sliding (e.g., in aircraft structures and biomedical implants) such that microstructurally graded damage resistant materials may be designed.

1. Electromechanical response of piezoelectric composites with hollow fibers
   C. Marcheselli and T. A. Venkatesh, under review, 2008.

2. Electromechanical response of piezoelectric composites: Effects of geometric connectivity and grain-size
   R. Kar-Gupta and T. A. Venkatesh, under review, 2007.

3. Electromechanical response of 1-3 piezoelectric composites: Effect of fiber shape
   R. Kar-Gupta, C. Marcheselli, and T. A. Venkatesh, under review, 2007.

4. Electromechanical response of porous piezoelectric materials: Effects of porosity distribution
   R. Kar-Gupta and T. A. Venkatesh, Applied Physics Letters, 91, 062904, 2007.

5. On the Uniqueness and Sensitivity Issues in Determining the Elastic and Plastic Properties of Power-law Hardening Materials through Sharp and Spherical Indentation
   H. Lan and T. A. Venkatesh, Philosophical Magazine, 87, 4671-4729, 2007.

6. On the sensitivity characteristics in the determination of the elastic and plastic properties of materials through multiple indentation
   H. Lan and T. A. Venkatesh, Journal of Materials Research, 22, 1043-1063, 2007.

7. Determination of the elastic and plastic properties of materials through instrumented indentation with reduced sensitivity
   H. Lan and T. A. Venkatesh, Acta Materialia, 55, 2025-2041, 2007.

8. Electromechanical response of 1-3 piezoelectric composites: An analytical model
   R. Kar-Gupta and T. A. Venkatesh, Acta Materialia, 55, 1093-1108, 2007.

9. Electromechanical response of 1-3 piezoelectric composites: A numerical model to assess the effects of fiber distribution
   R. Kar-Gupta and T. A. Venkatesh, Acta Materialia, 55, 1275-1292, 2007.

10. Electromechanical response of porous piezoelectric materials
    R. Kar-Gupta and T. A. Venkatesh, Acta Materialia, 54, 4063-4078, 2006.

11. Electromechanical response of 1-3 piezoelectric composites: Effect of poling characteristics
    R. Kar-Gupta and T. A. Venkatesh, Journal of Applied Physics, 98, 054102, 2005.

12. Artificial sea weeds: A novel energy converter
    C. Koutsougeras, B. Singh, and T. A. Venkatesh, Patent disclosure, Tulane University, 2005.

13. Motion of charged particles in electromagnetic fields and special theory of relativity
    P. C. Das, G. S. Murthy, P.C. Deshmukh, K. S. Kumar, and T. A. Venkatesh, Resonance, 9, 77-85, 2004.

14. Method and apparatus for mechanical property measurement based on large deformation during sharp indentation
    M. Dao, N. Chollacoop, K. J. Van Vliet, T. A. Venkatesh, and S. Suresh, Patent application, MIT Case 9159, 2001.

15. Computational modeling of forward and reverse problems in instrumented sharp indentation
    M. Dao, N. Challocoop, K. J. Van Vliet, T. A. Venkatesh, and S. Suresh, Acta Materialia, 49, 3899-3918, 2001.

16. An experimental investigation of fretting fatigue in Ti-6Al- 4V: The role of contact conditions and microstructure
    T. A. Venkatesh, B. P. Conner, C. S. Lee, A. E. Giannakopoulos, T. C. Lindley, and S. Suresh, Metallurgical and Materials Transactions A, 32, 1131-1146, 2001.

17. Tertiary compression creep of long fiber composites: A model for fiber kinking and buckling
    T. A. Venkatesh and D. C. Dunand, Metallurgical and Materials Transactions A, 32, 183-196, 2001.

18. Determination of elasto-plastic properties by instrumented sharp indentation: Guidelines for property extraction
    T. A. Venkatesh, K. J. Van Vliet, A. E. Giannakopoulos, and S. Suresh, Scripta Materialia, 42, 833-839, 2000.

19. Reactive infiltration processing and secondary compressive creep of NiAl and NiAl- W composites
    T. A. Venkatesh and D. C. Dunand, Metallurgical and Materials Transactions A, 31, 781-792, 2000.

20. The role of adhesion in contact fatigue
    A. E. Giannakopoulos, T. A. Venkatesh, T. C. Lindley, and S. Suresh, Acta Materialia, 47, 4653-4664, 1999.

21. A model for the longitudinal primary creep of long-fiber composites
    T. A. Venkatesh and D. C. Dunand, Acta Materialia, 47, 4275-4282, 1999.

22. Model for grain boundary sliding and its relevance to optimal structural superplasticity: Part 4 - Experimental verification
    T. A. Venkatesh, S. S. Bhattacharya, K. A. Padmanabhan, and J. Schlipf, Materials Science and Technology, 12, 635-643, 1996.

23. A review of the modeling and experimental studies on fretting fatigue at MIT
    S. Suresh, A. E. Giannakopoulos, T. C. Lindley, T. A. Venkatesh, G. W. Kirkpatrick, and B. P. Conner, Proceedings of the Fifth National Turbine Engine High Cycle Fatigue (HCF) Conference, ed., M. J. Kinsella, Universal Technology Corp., Dayton, OH, CD-Rom, S13, 1-6, 2000.

24. Small fatigue crack growth, fatigue thresholds, and life prediction methods for contact fatigue
    T. A. Venkatesh, A. E. Giannakopoulos, T. C. Lindley, and S. Suresh, invited paper, Small Fatigue Cracks - Mechanics, Mechanisms and Applications, ed., K. S. Ravichandran, R. 0. Ritchie and Y. Murakami, Elsevier, New York, 355-359, 1999.

25. Reactive infiltration processing of bulk and fiber- reinforced NiAl
    T. A. Venkatesh, C. W. SanMarchi, A. Mortensen, and D. C. Dunand, High Temperature Ordered Intermetallic Alloys VII, ed. C. C. Koch, N. S. Stoloff, C. T. Liu, and A. Wanner, Materials Research Society, Pittsburgh, 737-742, 1996.

26. Compressive creep deformation of continuous fiber reinforced NiAl-W composites
    T. A. Venkatesh and D. C. Dunand, invited paper, Deformation and Fracture of Ordered Intermetallic Materials III, ed., W. 0. Soboyejo, T. S. Srivatsan, and H. L. Fraser, The Minerals, Metals, and Materials Society, Warrandale, 361-377, 1996.

K. Challagulla (presently at McGill University)
R. Kar-Gupta (presently at ABAQUS, RI)
H. Lan (presently at Tulane University)
C. Marcheselli (presently at the University of Washington)