Numerical Control and Non-destructive Testing laboratory

Numerical Control and Non-destructive Testing laboratory belongs to School of Mechanical and Vehicle Engineering, Beijing Institute of Technology. From the ends of 70s, the laboratory started research on Modality Analyzing Theory and Technology, Monitoring and Testing Technology, Numerical Control Technology and Non-destructive Testing Technology. Now, the laboratory has five professors, six vice professors, one lecturer, six doctors and thirty graduates. Working area of this laboratory is over 300 . Total value of facilities is over 7 million RMB. Actually, it combines the scientific study with the teaching.

1. Modality Analyzing Theory and Technology
In this area, researches are mainly focused on computerized mechanical vibration, noise and modality analyzing theory. A new method of mechanic modality parameters recognizing, has been developed in a research program supported by the China National Natural Science Fund. This algorithm has received prize awarded by the National Mechanical and Electronics Industries Ministry. Based on the theory, a monograph - Experimental Modality Analyzer has built and related papers have been published. About ten graduate students worked in this field and have gotten their degrees from the research work.

2. Monitoring and Diagnosing Technology
The researches are mainly focused on the monitoring and diagnosing technology used in CIMS and FMS fields. Many projects supported by government have been undertaken. Techniques such as automatic detecting of cutting tool wearing, intelligent ball bearing fault diagnosing have been researched deeply. Products, such as the fatigue cracking detector for truck laminated plate spring, surface contact type acoustic emission sensor, and non-surface contact type acoustic emission sensor, have been developed and been used in industry successfully. The products were awarded a lot of prizes by different industry ministry. About ten graduate students have worked in this field and gotten their degrees.

3. Numerical Control Technology
The laboratory has begun to research on Numerical Control Technology and begun to develop on Numerical Control Products from 1970s. Products such as the simple numerical control lathe, the three coordinates numerical control milling machine, the NC system for machining center are developed. In 90s, the laboratory researched on DNC technology and focused on special and high-precision NC system development. Research work on auto-programming technique has also been done in that period. The laboratory has successfully developed CNC controllers for lath, for a axis milling machine. The online auto measuring and grouping machine, one of the products, was successfully used in engine cylinder body’s production line. In recent years, the laboratory started research on the Parallel Numerical Controlling Machine and the Super Precision Numerical Controlling Technology. Presently, many key projects of the national are undertaken.

4. Non-destructive Testing Technology
The researches mainly focused on the ultrasound testing technique, the non-contact optical dimension measuring technique, the vortex current testing technique, and so on. Projects including “the comprehensive parameter testing technology for tubular parts inner surface” and “the ultrasound measuring technology for the shear modulus of solid material” are developed recently in the lab. Additionally, RD2 railway wagon rolling bearing fault detector has been successfully used in practice.