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Research Area
Basic research in micro and nano-machining mechanics and technologies
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Modeling the Size Effect in Ultra-precision Machining using the Multi-scale Plasticity Approach |
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Modeling and simulation of Surface Generation in ultra-precision machining |
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Ultra-precision diamond turning of difficult-to-machine ferrous alloys |
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Stress Induced Microstructural Changes in the Ultra-precision Machining of Heat-treatable alloys |
Development of advanced processes and technologies in ultra-precision machining
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Tool Path Generator for Optical Freeform Surface Machining |
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Ultra-precision Freeform Surface Measurement and Evaluation |
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Characterization of Optical Microstructures Using Pattern and Feature Parametric Analysis |
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Development of an Integrated Platform for Optics Design, Machining and Measurement of Optical Freeform Surfaces |
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(1) Technological advancement
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The integrated system is the first of its kind in Mainland China and overseas for the design and manufacture of free-form optical surfaces, without the need to rely on the import of technology from overseas.
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The achievements are able to meet international standards. In comparison with related technologies developed in the local area or in overseas countries, the research team is in the leading position in this research area.
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(2) Advantages of the Integrated System
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It is capable of predicting the performance of the machining process and optimizing the cutting strategy. This minimizes the need for expensive trial cutting tests. The machining time can be reduced from more than 10 days to several days
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With the development of the automated freeform tool path generator, the time required to program the machine tool path is significantly reduced
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Reduction of tool wear.
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The system is equipped with a series of algorithms which allow the measurement of optical freeform surfaces. This helps to improve the surface quality of the products.
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A framework for the Surface Intrinsic Feature (SIF)-based Freeform Surface Characterization System is also proposed which throws some light on the future development of a generalized and standard freeform surface algorithm.
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CCD on-machine measurement system
Advanced Optic manufacturing
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Development of advanced freeform secondary optics for LED road lamps and LED automotive lighting,. The optics can enhance the efficiency of the lighting systems and increase the uniformity of light distribution. |
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Development of secondary optics to effectively collect the solar power so as to miniaturize the solar energy systems and reduce the use of solar panel |
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Complex optical systems for exploiting solar energy by collecting and channeling sunlight for interior illumination of buildings |
Multi-functional and bionic structured surfaces
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Shark skin to manage the flow of liquid. For example, shark skin structure can reduce friction in water and drag for other technical applications, e.g. high-efficiency heat exchanging copper tube |
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Lotus leaf and butterfly wings which possess the specific structure giving them superhydrophobicity or self-cleaning properties |
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Compound eyes from insects which show excellent visual acuity with possible future applications in high-speed motion detection and sensors in different areas |
Development of facilities, equipment and standards in ultra-precision machining and freeform surface metrology
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To develop ltra-precision machining and nano-surface metrology equipment for freeform surface characterization. The ultra-precision machines made in Mainland China have shown some progress in recent years. However, a technological gap still exists as compared with the state-of-the-art technology in terms of form accuracy control and other aspects |
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To work closely with various international bodies (EUSPEN, ASPEN, ASPE, JSPE) to develop international standards for free-from nano-metrology and promote international collaboration in UPMT |
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