School of Mechanical and Aerospace Engineering 

Sridhar IDAPALAPATI
                BTech., MTech., PhD 
Associate Professor

Office: N3 – 02b – 37
Tel: +65 - 6790 4784 
Email: msridhar@ntu.edu.sg

 

sridhar_1

 

 

   Reseaech Positions

       

A post-doctoral position to work on the hybrid design of sandwich panels (with ceramics, composites) is available. The candidate should have MEng or PhD in manufacturing, fracture mechanics, impact mechanics and exposure to finite element modeling.

 

      For further details, please contact with your academic CV. 

 

     Academic Profile & Professional Experience

1987-91 B. Tech. (Mechanical Engg - Jawarharlal Nehru Technological University), India
1991-93 M. Tech (Solid Mehanics & Design - IIT Kanpur) India
1993-94 Senior Project Associate, IIT Kanpur
1994-98 Ph.D. (Mechanics of Materials - University of Cambridge, UK)
1999-00 Research Associate, Cambridge University Engineering Department, UK
2000-01 Research Scientist, National Institute of Standards & Technology (NIST), USA
June 2001- March 2010 Assistant Professor, NTU
April 2010 – Associate Professor, NTU

      Research Interests

  • Powder consolidation
  • Sandwich panels design
  • Ultrasonic NDT
  • Adhesion and friction modelling (nanotribology)
  • Adhesive Bonded Joints
  • Biomechanics

    Prizes and Awards

  • Nanyang Award 2009 for Excellence in Teaching (Also Teach-of-the-Year 2009 Award by the School of Mechanical & Aerospace Engineering) MAE students are indeed very kind in their vote for me.
  • Teacher-of-the-Year 2010 by School of Mechanical & Aerospace Engineering, NTU. Again, MAE students are indeed very kind in voting for me.
  • Titanium Award @ 2006 URECA Poster Exhibition in NTU.
  • Recipient of Cambridge Nehru Scholarship (1994) and UK Overseas Research Student (ORS) award for Ph.D. programme at University of Cambridge, U.K.
  • University Gold Medal (HMT Medal) for securing First Rank at the JNT University, Hyderabad, India.
  • Dr. Ch. Satyanarayana Gold Medal recipient for securing First Rank at the Junior College.
  • Secured 98.55 percentile in Graduate Aptitude Test in Engineering (GATE) - 1991 (an All India level examination for Master's Course in India) and IIT Kanpur Institute Scholarship during M.Tech.
  • Recipient of  Telugu Vignana Parithoshikam (1987) - given to the top 25 students in each district of Andhra Pradesh at 10+2 level.


   Current Teaching (I Semester 2011 - 12)

  • MP4011 Mechanical Systems Design and Analysis
  • MP2004 Manufacturing Technology & Materials
  • FE1006 Mathematics 1

       Graduate Students

  • Mr. Lim Yee Wei (working on the design of sandwich panels for energy management and their robust design)
  • Mr. Rengarajan Karthic Narayanan working on a manufacturing project
  • Dr. Shashi Bhushan Kumar (worked adhesively bonded composite joints) Currently employed with DNV, Singapore
  • Dr. Kotlanka Rama Krishna (working on bone fracture fixation problem) Employed with Institute of Microelectronics (IME), Singapore
  • Dr. Zheng Zuwei (working on the adhesion mechanics of thin visco-elastic layers) Employed with Seagate, Singapore
  • Dr. Kapil Mohan (working on the design of sandwich panels) Employed with DNV, Singapore.
  • Mr. Loo Zhi Yuan, Shane (worked on the CNT reinforced in sol-gel silica for low-k dielectric application) Employed with Singapore Public Sector.

 Book Chapters

1.      Idapalapati Sridhar, Chapter 9 in Environmentally Conscious Mechanical Design, Edited by Myer Kutz, John-Wiley & Sons (2007) pp 319 – 350.

2.      D. N. Ghista, I. Sridhar, K. Ramakrishna ‘Analysis for internal fixation of a fractured bone by means of bone-fixator plate’ Chapter 11 in “Applied Biomedical Engineering Mechanics” editor D. N. Ghista, Taylor & Francis (CRC press), 2008, pp. 303 – 354.

3.      D. N. Ghista, I. Sridhar, K. Ramakrishna ‘The human lumbar vertebral body: Analysis of its functionally-optimal design’ Chapter 12 in “Applied Biomedical Engineering Mechanics” editor D. N. Ghista, Taylor & Francis (CRC press), 2008, pp. 355 - 378

4.      D. N. Ghista, I. Sridhar, K. Ramakrishna ‘The human spinal vertebral disc: Its optimal structural design characteristics’ Chapter 13 in “Applied Biomedical Engineering Mechanics” editor D. N. Ghista, Taylor & Francis (CRC press), 2008, pp. 379 – 394.

 

   Journal Publications (all these papers are available on-line on respective journal websites)

  1. "Adhesion mechanics of Surface Force Apparatus", With KL Johnson and NA Fleck, Journal of Physics D: Applied Physics 30 [12] (1997), p. 1710-1719. 
  2. "Finite element modelling of scattering of ultrasonic waves by isolated flaws" With NN Kishore and NGR Iyengar, NDT&E International, 33 [5] (2000), pp. 297-305 
  3. "Cold compaction of an array of cylindrical fibres" With NA Fleck and AR Akisanya International Journal of Mechanical Sciences 43 [3] (2001), p. 715-742. 
  4. "Yield behaviour of cold compacted composite powders" With NA Fleck Acta Materialia 48 [13] (2000), p. 3341-3352. 
  5. "Adhesion between a spherical indenter and an elastic solid with a compliant elastic coating" With KL Johnson Journal of Physics D: Applied Physics 34 [5] (2001), p. 683-689. 
  6. "End compression of sandwich columns" With NA Fleck Composites A: Science and Technology 33 [3] (2002), p. 353-359.
  7. “On the adhesion mechanics of Mutli-Layer Elastic Systems" With S. Sivashanker, Surface Coatings and Technology 167[2-3] (2003), 181-187.
  8. “Adhesion Between an AFM Probe and an Incompressible Elastic Film”, With Z. Zuwei, KL Johnson and WT Ang, International Journal of Nanoscience  3 [4-5] (2004), 599-608.
  9.  “Analysis of Internal Fixation of a Long Bone Fracture”, with K. Ramakrishna, S. Sivashanker, V. Ganesh, D.N. Ghista,  Journal of Mechanics in Medicine and Biology, 5[1] (2004), pp 89-103.
  10.  “Prediction and Characterisation of Compressive Failure in Advanced Aerospace Composite” with A C Yong Journal of Institute of Engineers (Singapore), Vol. 45, # 1,57-71, 2005. This paper has won a Merit Award in undergraduate final year project (FYP) competition.
  11.  “A Detailed Analysis of Adhesion Mechanics between a Compliant Elastic Coating and a Spherical Probe”, with Z. W. Zheng, K.L. Johnson, Journal of Physics D: Applied Physics 37[20] (2004), 2886-2895.
  12. “The multiaxial Yield Behavior of an Aluminum Alloy Foam”, With NA Fleck,  Journal of Materials Science 40[15] (2005), 4005-4008.
  13.  “Optimal internal-fixation plate design for necessary and sufficient bone stress shielding”, with K. Ramakrishna, S. Sivashanker, K.S. Khong, D.N. Ghista, Japan Society of Mechanical Engineers Series C, 47[4] (2004) 1086-1094.
  14. “Failure of aerospace composite scarf –joints subjected to uniaxial compression”, with S.B. Kumar, S. Sivashanker and Asim Bag, Materials Science and Engineering A 412 (2005) 117-122. 
  15. “Failure of Sandwich Beams Consisting of Alumina Facesheet and Alporas Foam Core in Bending” with Kapil Mohan, Yip Tick Hon and Hong Pheow Seow, Materials Science and Engineering A 409 (2005) 292-301.
  16. “Effect of friction and adhesion on the load-displacement of a spherical probe in contact with an elastic incompressible film” with Z.W. Zheng, Tribology International 40:2(2007) 180-187.
  17. “Spherical indentation of an elastic thin film on an elastic-plastic substrate”, with Z.W. Zheng, Materials Science and Engineering A 423 (2006) 64-69.
  18. "Human Lumbar Vertebral Body As An Intrinsically Functionally Optimal Structure", with DN Ghista, SC Fan, K Ramakrishna, International Journal of Design and Nature 1 (2006) 34-47.
  19. “Tensile Failure of Adhesively Bonded CFRP Composite Scarf-Joints”, with SB Kumar, S. Sivashanker, S. Osiyemi and A. Bag, Materials Science and Engineering B, 132[1-2] (2006) 113-120.
  20. “Design of Hybrid Sandwich Panel with Aluminum Foam Core and Carbon Fiber Reinforced Plastic Face Sheets under Three-Point Bending”, with Kapil Mohan,  Tick Hon Yip and H.P. Seow,  Solid State Phenomena, Volume 111, (2006) 63-66.
  21.  “Effect of Face sheet Material on the Indentation Response of Metallic Foams", with K. Mohan, T.P. Yip and H. Seow  Journal of Materials Science, 42[11], (2007) 3714 - 3723.
  22. “The Optimal Structural Design of the Human Spinal Intervertebral Disc” with D.N. Ghista, S.C. Fan and K. Ramakrishna,  International Journal of Design and Nature 1(2) (2007) 146-160.
  23. “Mode – I fracture energy measurement of adhesively bonded composite joints using modified Single lap joints”, with SB Kumar, S Sivashanker and S Osiyemi, Journal of Adhesion Science and Technology 20(10): 1109 – 1124,  (2006).
  24. “Effect of surfactants on MWCNTs reinforced sol – gel silica dielectric composites”, with Shane Loo, Shanzhong Wang, Lu Shen and Subodh G. Mhaisalkar, Scripta Materialia 57(12), (2007) pp: 1157-1160.
  25. “Contact mechanics of layered elastic materials: experiment & theory”, with P.M. McGuiggan, J.S. Wallace, D.T. Smith,  Z. Zuwei and K.L. Johnson Journal of Physics D: Applied Physics 40 (2007) 5984 - 5994. 
  26. “Analysis of the Helical Plate for Bone Fracture Fixation”, with K. Ramakrishna and Dhanjoo N. Ghista. Injury International Journal of the Care of the Injured 39 (2008) 1421-1436.
  27. “Influence of humid environment on the performance of high strength structural carbon fiber composites” with S.B. Kumar and S. Sivashanker. Materials Science and Engineering A 498 (2008) pp. 174-178.
  28. “A Comparative Study on the Measurement of Toughness of Stacks Containing Low k Dielectric Films”, with Z.W. Zheng and S. Balakumar. Microelectronics Engineering 85 (2008) 2322-2328.
  29. "Numerical Green's functions for some electroelastic crack problems" With L Athanasius, WT Ang, Engineering Analysis with Boundary Elements 33 (2009) 778 - 788.
  30. “Fabrication and Characterisation of MWCNT reinforced Aluminum Matrix Composites” with Karthic R Narayanan, Journal of Materials Science 44(#7) (2009) 1750 - 1756.
  31. “Spark Plasma Sintered Multiwall Carbon Nanotube Reinforced Aluminum Matrix Composites” with Liao Jinzhi and Tan Ming Jen, Materials & Design (2010).
  32. “Electro-elastostatic analysis of multiple cracks in an infinitely long piezoelectric strip: a hypersingular integral approach”, with L Athabasius, WT Ang, European Journal of Mechanics – A: Solids 29 (2010) 410 - 419.
  33. “Effect of Cold Work on the Mechanical Response of Drawn Ultra-Fine Gold Wire”, with Karthic R Narayanan and S. Subbiah, Computational Materials Science Volume 49(1S) 2010, Pages S119-S125.
  34. “Optimal Design of Customised Hip Prosthesis Using  Fibre Reinforced Polymer Composites Materials and Design” with Adie P.P and D.N. Ghista, Materials and Design  31 (2010) 2767-2775.
  35. “Creep Behavior of Spray-Deposited AlLi/SiCp composites”, with Liao Jinzhi and Tan Ming Jen, Materials Science and Engineering A 527 (2010) 4906 - 4913.
  36.  “Drilling holes in composite laminates using router tool”, with S. Subbiah, Transactions of the North American Manufacturing Research Institution of SME Volume 38, (2010) 275-282 .
  37. “On the plastic zone size and crack tip opening displacement of a sub-surface crack in an infinite bi-material plater”, with Y. Dake, X. Zhongmin and Z. Jiang, Philosophical Magazine 91(26) 2011 3456 – 3472.
  38. “Indentation of single crystal copper using rate independent crystal plasticity”, with Karthic R Narayanan and Sathyan Subbiah, Applied Physics A Materials Science and Processing, 105 (2011) 453-461.
  39. “Impact Response of Aluminum Foam Core Sandwich Structures”, with Kapil Mohan, Yip Tick Hon and Chen Zhong,  Materials Science and Engineering A  529 (2011) 94-101.
  40. “Fracture capacity of girth welded pipelines with 3D surface cracks subjected to biaxial loading conditions", with Yi Dake, Xiao Zhongmin and Shashi Bhushan Kumar, to appear in International Journal of Pressure Vessels and Piping (2011).
  41. “Impact modeling of foam cored sandwich plates with ductile or brittle faceplates”, with Rajaneesh Anantharaju, Sellakkutti Rajendran, to appear in Composite Structures (2011).
  42. “Multi-objective material selection for wind turbine blade and tower: Ashby's approach” with A. Rashedi, and K.J. Tseng, to appear in Materials and Design (2011).
  43. “Experimental and numerical investigations of the texture evolution in copper wire drawing”, with Karthic R Narayanan and Sathyan Subbiah, to appear in Applied Physics A Materials Science and Processing, (2012).
  44. “On the design of Bi-Layer Armor”, with Ahmad Serjouei, Wong Ee Hua, to appear in Solid State Phenomenon, (2012).

 

 

General Websites of Interest

: Cambridge Friends of India ", a voluntary organisation run by mostly Cambridge University Students in U.K.