Publications

Journal Publications

1. Dwivedi R. and Kovacevic R., "An Expert System for Generation of Machine Inputs for Laser-based Multi-directional Metal Deposition", International Journal of Machine Tools and Manufacture Volume 46, Issue 14, November 2006, Pages 1811-1822.

2. Dwivedi, R., Zekovic, S. and Kovacevic, R., “Field Feature Detection and Morphing Based Process Planning for Fabrication of Geometries and Composition Control for Functionally Graded Materials”, the Proceedings of the Institution of Mechanical Engineers, Part B, Journal of Engineering Manufacture, Vol. 220, (2006), pp. 1647-1661.

3. Zekovic, S., Dwivedi, R., and Kovacevic, R., “Numerical Simulation of Gas-powder Flow from Radially Symmetrical Nozzles in Laser-based Direct Metal Deposition”, accepted for the International Journal of Machine Tools and Manufacture

4. Dwivedi R. and Kovacevic R., "Process Planning for Multi-Directional Laser-Based Direct Metal Deposition", Institution of Mechanical Engineers, Journal of Mechanical Engineering Science, Vol. 29, Part C, 2005, pp 695-707 2004.

5. Dwivedi R. and Kovacevic R., "Automated Torch Path Planning Using Polygon Subdivision for Solid Freeform Fabrication Based on Welding", SME Journal of Manufacturing Systems, Vol. 23, No. 4, 2004, pp 278-291.

6. Zekovic S., Dwivedi R. and Kovacevic R., "Experimental verification and Numerical Simulation of Gas Powder Flow From Radially Symmetric Nozzles in Laser-based Direct Metal deposition", International Journal of Machine Tools and Manufacture Volume 47, Issue 1, January 2007, Pages 112-123

7. Dwivedi R., Zekovic S. and Kovacevic R.,"A Novel Approach for Fabrication of Uni- and Multi-directional Slender Structures and Their Characterization", International Journal of Machine Tools and Manufacture Volume 47, Issues 7-8, June 2007, Pages 1246-1256

Peer Reviewed Conference Publications

1. Dwivedi R., Zekovic S., Kovacevic R., “Modeling and Verification of Error Propagation in Integrated Additive/Subtractive Multi-Directional Direct Manufacturing”, Proceedings of the 17th Solid Freeform Fabrication Symposium, Austin, Texas, USA, August 2006, Pages 517-531.

2. Zekovic S., Dwivedi R., Kovacevic R., “an Investigation of Gas-Powder Flow in Laser Based Direct Metal Deposition”, Proceedings of the 17th Solid Freeform Fabrication Symposium, Austin, Texas, USA, August 2006, Pages 558-572.

3. Dwivedi R., Zekovic S., Kovacevic R., "Field feature detection and morphing based process planning for fabrication of geometries and composition control for functionally graded materials", 11th International Scientific Conference on the Contemporary Achievements in Mechanics, Manufacturing and Materials Science CAM3S, December 6-9, 2005, Gliwice-Zakopane, Poland.

4. Zekovic S., Dwivedi R., Kovacevic R., "Numerical simulation of gas-powder flow from radially symmetric nozzles in laser-based direct metal deposition", 11th International Scientific Conference on the Contemporary Achievements in Mechanics, Manufacturing and Materials Science CAM3S, Decamber 6-9, 2005, Gliwice-Zakopane, Poland.

5. Zekovic S., Dwivedi R., Kovacevic R., “Multi-Fabrication system for for Rapid Manufacturing/Repair: Issues Related to Laser Based Direct Metal Deposition ”, Indo-US Workshop on Rapid Manufacturing, Bangalore, India, April 2006, Pages 37-64.

6. Dwivedi R., Zekovic S. and Kovacevic R., "A model for error propagation in the Solid Freeform Fabrication", 16th Solid Freeform Fabrication symposium, Aug 1-3, 2005, Austin, TX

7. Dwivedi, R., Zekovic, S., and Kovacevic, R., "Mechanism for Determination of G-factors for Deposition Techniques Involving Solid Freeform Fabrication Based on Large Heat Input", 16th Solid Freeform Fabrication symposium, Aug 1-3, 2005, Austin, TX

8. Dwivedi R., Jandric Z. and Kovacevic R., "Torch Path Planning for Solid Freeform Fabrication Based on Welding", NAMRC-XXXI, McMaster University, Hamilton, Ontario, Canada, May 20-23, 2003, pp 419-426, also as SME Technical Paper, MS03-197, 2003

9. Zekovic, S., Dwivedi, R., and Kovacevic, R., "Thermo-Structural Finite Element Analysis of Direct Laser Metal Deposited Thin Wall Structures", 16th SolidFreeform Fabrication symposium, Aug 1-3, 2005, Austin, TX

10. Jandric Z., Dwivedi R.and Kovacevic R., "A new approach and Algorithm for obtaining size of Molten Pool in GTAW", Proceedings of the 13th international conference on Computer Technology in Welding, June 18-19, 2003, Orlando Fl.

11. Karunakaran, K.P., Pushpa, V., Akula, S.B., Dwivedi, R., and Kovacevic, R., "Thermoeconomical Analysis of Hybrid Layered Manufacturing", 16th Solid Freeform Fabrication symposium, Aug 1-3, 2005, Austin, TX

12. Karunakaran, K.P., Solanki, P.D., Sahasrabudhe, O.S., Pushpa, V., Dwivedi, R., and Kovacevic, R., "Simplified Production of Large Prototypes Using Visible Slicing", 16th Solid Freeform Fabrication symposium, Aug 1-3, 2005, Austin, TX

13. Dwivedi R., Kovacevic R., "Morphing based approach for process planning for fabrication of geometries and the control of material composition", Proceedings of the 15th Solid Freeform Fabrication Symposium, Aug 2-4, 2004, Austin TX, pp 553-562

14. Dwivedi R. and Kovacevic R., "Process Planning for Solid Freeform Fabrication Based on Laser-Additive Multi-Axis Deposition", Proceedings of the 14th Solid Freeform Fabrication Symposium, Aug 4-6, 2003, Austin TX, pp 1-12

15. Dwivedi R., Shah R., "Robot Path Planning Based on Harmonic Potentials", National Conference on Industrial Automation, TIET, Patiala, India, May 4-5, 2000

Industry White Papers

1. An investigation into existing technologies for the development of Diagnostic mail.

2. Development of Embedded Sensors for Monitoring of Belt Parameters.