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PolyU scientists honoured with Natural Science Award
for research in ultra-precision machining technology

PolyU scientists honoured with Natural Science Award for research in ultra-precision machining technology

 

The Ministry of Education of China announced the results of its Higher Education Outstanding Scientific Research Output Awards 2010 on 1 March. Two PolyU scientists from the Department of Industrial and Systems Engineering (ISE) were honoured with the Natural Science Award (Second Class) for their research in modeling and characterization of nano-surface generation in ultra-precision machining. They were Principal Investigator Dr Benny C.F. Cheung (left in photo) and Co-investigator Prof. W.B. Lee (right in photo).

In recent years, there is a growing demand for high precision components with nanometric surface finish. They have been widely used in various high-tech industries such as advanced optics, telecommunications, biomedical science and aerospace technology. Since the quality of machined surface critically affects the functional performance of high-precision components, the process of nano-surface generation has attracted a lot of research interest.

In many industrial applications, it still depends much on the experience and skills of machine operators to achieve a super mirror finished surface at nano-scale by SPDT (Single Point Diamond Turning). The optimum surface quality is achieved through an expensive trial and error approach when new materials or new machine tools are used.

The machining of super mirror surface at nano-scale demands for the research of novel modeling and characterization of nano-surface generation which can help to make the cutting process more predictable and cost effective. The project team has conducted extensive theoretical and experimental research in studying the factors affecting nano-surface generation and its mechanisms. They have successfully developed a number of novel surface topography models and surface characterization methods.

The research results not only allow better understanding for the theory of nano-surface generation mechanisms, but also provide an important means for optimizing the surface quality of the machined surface at nano-scale. This contributes significantly to the advancement of ultra-precision machining technology and its applications.

Recognizing PolyU’s research achievement in ultra-precision machining technology, the Ministry of Science and Technology of China approved the University’s establishment of the State Key Laboratory in Ultra-precision Machining Technology in 2009.

Research on Modelling and Characterization of Nano-surface Generation in Ultra-precision Machining   

 

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