Researcher Portfolio

Bi Guijun (Dr)
Group Manager
+65 6793 8502
Joining Technology
Introduction:

Dr Bi is a Senior Scientist, Team Lead of Metal Joining and Group head of Joining Technology Group at Singapore Institute of Manufacturing Technology (SIMTech). He received his PhD in 2004 from Fraunhofer Institute for Laser Technology, RWTH- Aachen University. The research topic was Laser Aided Additive Manufacturing and process monitoring & control. Since September 2004, he worked as a research fellow at Rolls- Royce Technology Centre in the Nottingham University, UK. The research focused on the processing of high-temperature Nickel and Titanium alloys with laser, Rapid manufacturing of aero-engine components and system development. He has authored and co-authored more than thirty journal papers. He also holds several patents and technology disclosures related metal joining technologies.

Research Interest:
  • System and process development of laser aided additive manufacturing and the applications in aerospace, marine, oil & gas, medtech and precision engineering
  • Process monitoring and control
  • Micro-laser welding of plastics and dissimilar materials
BioNotes:
  • 1994: BEng, Production Engineering and Automation, Dalian University of Technology, PR China
  • 1997: MEng, Production Engineering and Automation, Dalian University of Technology, PR China
  • 2004: PhD, Laser Material Processing, RWTH Aachen University, Germany

 

Publications:


Selected journal publications:

  1. B. Zhang, G. Bi*, P. Wang, J. Bai, Y. Chew, M. Nai: Microstructure and mechanical properties of Inconel 625/nano-TiB2 composite fabricated by LAAM, Materials & Design, 2016, Vol. 111, 70-79
  2. J. Guo, B. Y. Lee, Z. Du, G. Bi, M. J. Tan, J. Wei: Effect of Nano-particle Addition on Grain Structure Evolution of Friction Stir Processed Al 6061 during Postweld Annealing, JOM,  2016, Vol.68(8), 2268–2273
  3. X. Yao, S. K.  Moon, G. Bi*: A Cost-driven Design Methodology for Additive Manufactured Variable Platforms in Product Families, Journal of Mechanical Design, 2016, Vol. 138 (4), 041701
  4. Z. Du, M. J. Tan, J. F. Guo, G.  Bi, J. Wei: Fabrication of a New Al-Al2O3-CNTs Composite Using Friction Stir Processing (FSP), Materials Science and Engineering: A, 2016, Vol. 667, 125-131
  5. B. Zhang, G. Bi, M. L. Nai, C. N. Sun, J. Wei: Microhardness and Microstructure Evolution of TiB2 Reinforced Inconel 625/TiB2 Composite Produced by Selective Laser Melting, Optics & Laser Technology, 2016, Vol. 80, 186-195
  6. H. C. Chen, G. Bi, B. Y. Lee, C. K. Cheng: Laser Welding of CP Ti to Stainless Steel with Different Temporal Pulse Shapes, Journal of Materials Processing Technology, 2016, Vol. 231, 58-65
  7. Y. X. Chew, H. L. Pang, G. Bi, B. Song: Thermo-mechanical Model for Simulating Laser Cladding Induced Residual Stresses with Single and Multiple Clad Beads, Journal of Materials Processing Technology, 2015, Vol. 224, 89-101
  8. H. C. Chen, G. Bi, M. L. Nai, J. Wei: Enhanced Welding Efficiency in Laser Welding of Highly Reflective Pure Copper, Journal of Materials Processing Technology, 2015, Vol. 216, 287-293
  9. G. Bi*, C. N. Sun, A. Gasser: Study on Influential Factors for Process Monitoring and Control in Laser Aided Additive Manufacturing, Journal of Materials Processing Technology, 2013, Vol. 213 (3), 463-468
  10. G. Bi*, C. N. Sun, M. L. Nai, J. Wei: Microstructure and Mechanical Properties of Nano-TiC Reinforced Inconel 625 Deposited Using LAAM, Physics Procedia, 2013,  Vol. 41, 828-834
  11. G. Bi*, C. N. Sun, H. C. Chen, F. L. Ng, C. C. K. Ma: Microstructure and Tensile Properties of Superalloy IN100 Fabricated by Micro-Laser Aided Additive Manufacturing, Materials & Design, 2014, Vol. 60, 401-408
  12. G. Bi*, A. Gasser: Restoration of Nickel-base Turbine Blade Knife-edges with Controlled Laser Aided Additive Manufacturing, Physics Procedia, 2011, Vol. 12, 402-409
  13. G. Bi*, A. Gasser, K. Wissenbach, A. Drenker, R. Poprawe: Investigation on the Direct Laser Metallic Powder Deposition Process via Temperature Measurement, Applied Surface Science, 2006, Vol. 253 (3), 1411-1416
  14. S. H. Mok, G. Bi*, J. Folkes, I. Pashby: Deposition of Ti–6Al–4V Using a High Power Diode Laser and Wire, Part I: Investigation on the Process Characteristics, Surface and Coatings Technology, 2008, Vol. 202 (16), 3933-3939
  15. S. H. Mok, G. Bi*, J. Folkes, I. Pashby, J. Segal: Deposition of Ti–6Al–4V Using a High Power Diode Laser and Wire, Part II: Investigation on the Mechanical
  16. G. Bi*, B. Schürmann, A. Gasser, K. Wissenbach, R. Poprawe: Development and Qualification of a Novel Laser Cladding Head with Integrated Sensors, International Journal of Machine Tools and Manufacture, 2007, Vol. 47 (3), 555-561
  17. G. Bi*, A. Gasser, K. Wissenbach, A. Drenker, R. Poprawe: Identification and Qualification of Temperature Signal for Monitoring and Control in Laser Cladding, Optics & Lasers in Engineering, 2006, Vol. 44 (12), 1348-1359
  18. G. Bi*, A Gasser, K. Wissenbach, A. Drenker, R. Poprawe: Characterization of the Process Control for the Direct Laser Metallic Powder Deposition, Surface and Coatings Technology, 2006, Vol. 201 (6), 2676-2683

Patents:

  1. Powder Feeding Nozzle and Process for Laser Aided Additive Manufacturing, Singapore Patent No. 189649.
  2. Energy Efficient Welding Method for Highly Reflective Copper and Its Alloys, Singapore Patent Application No. 201203792-5.
  3. Design and Fabrication of the Embedded High Aspect Ratio Channels and Cavities, Singapore Patent Application No. 10201506744P.

Trade secret:

  1. Laser Additive Welding (LAW) Using Powder as Additive Material.