Research Interests     Recent Achievements  Ongoing Researches  Patent  Publications

1.Research Interests                                                                       Top    Next

                   Software Development. I am  experienced in several  programming languages: C for DOS, MS Visual C++ for Windows, Borland C++ for Windows and Java, and know very well about Data Structure, Computer Graphics, and the data formats especially used in RP technology, STL and CLI. Until now, and  has developed four integrated software, all of them fulfill the functions of data processing, machine monitoring and process control, etc.  Every software system has an easy-to-use user interface.

            Electromechanical Product Development. Electromechanical product is a kind of integrated system, which is the synthesis of computer, microprocessor, mechanics, electronics, sensing techniques etc.  Until now, I have successfully developed four integrated electromechanical systems; each of them is composed of several subsystems, for instance, position sensing and control system, temperature sensing and control system, force and displacement sensing and control system and so on.

            Research on Product Development Methodology. Product development works on its distinct principles, which can apply to various development activities. Based on his comprehensive knowledge background and abundant experiences of software design and electromechanical product development, I have deeply studied the product development methodology and developed a theory named “ Product Development Kinetics”.

            Research on Technology of Rapid Prototyping. Rapid Prototyping is a kind of advanced manufacturing technology, which can produce 3-D parts directly from CAD model. Three of the four integrated systems which I have designed are RP&M system and are experienced in RP software design, RP system development, process study and material research.

2. Recent Achievements                                                        Top    Previous    Next

            Experimental system of 3-D Welding. As a Postdoctoral Fellow in Southern Methodist University, Dallas , Taxes, I developed an experimental system of 3-D welding. The system software, also with an easy-to-use user interface, detects welding current, welding arc voltage, welding arc intensity with several sensors, controls the motion system, welding power, wire feeder to stack a 3 dimensional part layer by layer.

            Large Scale RP&M System ---SSM-1600. While studying as a Ph.D. candidate in Tsinghua University , I developed a large scale RP&M system successfully, which may be the largest RP machine presently and aroused much interest all over the world. It is an extremely comprehensive project, including conceptual stage design, electromechanical system design and system software development and supervising the manufacturing process. The electromechanical system consists of motion control system, temperature control system, laser system, displacement feedback system and so on. The software, with an easy-to-use user interface, reads in the geometrical data of the prototype, translates these data into numerical control code, incorporates all the electromechanical subsystems to fabricate prototype concurrently.

            Multi-functional RP&M System ---MRPMS. While Studying for my  Ph.D. degree in Tsinghua University , I  also carried out another project to upgrade the multi-functional RP&M system, which integrates three kinds of RP processes, SLS, FDM and LOM into one body. The system software is multifunctional and easy to use. According to the kind of process selected, the software reads the geometrical data, treats them in different ways, and controls the electromechanical subsystems to properly corporate with each other to perform proper kind of process.

            Tension Test Machine for Metal Sheets. While studying for master degree in Institute of Metal Research , Chinese Academy of Sciences, I developed the hardware and software systems for a tension test machine. This machine can automatically control the tension test process, detect the species distortion and force implemented dynamically, calculate the basic parameters and predict some simulation parameters of a metal sheet.

3. Ongoing Researches                                                           Top    Previous    Next

            Selective Chemical Liquid Deposition for Mini-structures and Microsystems (SCLD-MEMS). This is an innovative manufacturing technology to make micro-electromechanical component and system. SCLD-MEMS integrate chemical liquid deposition, rapid prototyping technology, systems and control, and mini-structures and micro-systems in one automatic process. Droplets of organometallic compounds solutions are injected through a precise nozzle, and decompose to produce solid materials when touching a temperature-controlled hot substrate. By controlling the motion of the nozzle and the spray time, a desired 3-D shape microstructure of deposited material can be formed through layer-by-layer scanning technique, in this way a functional MEMS component can be made.   I am the leading researcher of this project.

            An Innovative Bionic Manufacturing System for 3-D Bone Scaffold and Tissue Structure. This project is aimed to make composite bone scaffold, which integrates biomaterials research, bionic modeling, solid freeform fabrication, systems and control, and bone scaffold tissue engineering in one intelligent system. The Bionic Manufacturing System is based on the following principles: First a CAD model of bone is created based on the images of computed topography (CT) or magnetic resonance imaging (MRI) and bionic internal structure modeling using revere engineering; then a special designed sucrose material is used to create a skeleton which has the negative structure of bone Extra-Cellular Matrix(ECM) voids using Solid Freeform Fabrication technology (SFF); and then composite of polymer and ceramic is cast into the sucrose negative skeleton and air-solidified; the sucrose skeleton is then removed using water; and finally the bio-composite scaffold is sintered at low temperature to improve the mechanical integrity and strength. I am the leading researcher and co-PI of this project.

4. Patent                                                                                  Top    Previous    Next

Yongnain Yan, Feng Wang, Bo Han, Li Bao, Mechanism of concurrent processing in divided regions for Rapid Prototyping, patent No. 98219120.0, State Intellectual Property Office of the People's Republic of China

5. Publications                                                                             Top    Previous

1.      Jack G. Zhou , Feng Wang, Chemical Liquid Deposition process for microstructures fabrication, Journal of Manufacturing Science and Engineering, submitted and in processing.

2.      Monnappa Kokkengada, Jack G. Zhou , Zongyang He, Feng Wang, Ampere A. Tseng, Low Temperature polymer infiltration for rapid tooling, Journal of materials and design, submitted and in processing

3.      Jack G. Zhou, Feng Wang, Selective Chemical Liquid Deposition for Fabrication of Mini-Structures and Microsystems, 2001 ASME international Mechanical Engineering Congress and Exposition, November 11-16,2001 , New York , NY .

4.      Wang,F. ,Owona, N. and Kovacevic, R. Droplet detachment control with additional mechanical force in gas metal arc welding, the 7th Mechatronics Forum International Conference 6-8 Sept. 2000, Atlanta, Georgia.

5.      Feng Wang, Yongnian Yan, Qinggang Wang, Study on Scanning Process of RP&M, Journal of Chinese Mechanical Engineering, 2000(7).

6.      Feng Wang, Yongnian Yan, Xushi Yan, Technology of Concurrent Manufacturing on Large Scale Rapid Prototyping, Journal of Chinese Mechanical Engineering, 2000(4).

7.      Yongnian Yan, Feng Wang, Li Bao, Na Le, Xinggang Wang, The Study on Concurrent Processing of RP&M for Large Scale Rapid Prototyping, USA-China Workshop on Advanced Machine Tool Research, California USA, 1999.1.

8.      Wang Feng, Han Bo, Bao Li, Yan Yongnian, Concurrent Processing--New Strategy on Large Scale Rapid Prototyping Manufacturing, the First   International Conference on RP&M, Beijing , 1998.7.

9.       Zhuo Xiong, Haibin Guo, Feng Wang, Feng lin  and Yongnian Yan,  The control of laser power matching scanning speed in real time based on the principle of multi-variable harmonic control,  the First   International Conference on RP&M, Beijing , 1998.7.

10.  Feng Wang, Yongnian Yan, General Technique system of Rapid Prototyping and Manufacturing Technologies,  Journal of Machine-Building Industry Automation, 1998(6).

11.  Feng Wang, Li Bao, Yongnian Yan, Study on CAM Integration of Multi-functional RP&M System, The 4th Rapid Prototyping and Mould Manufacturing Conference of China, Xi’an, China, 1998.4.