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Title: Design, ultra-precision polishing and measurement of superfinished orthopaedic implants for bio-medical applications : an integrated approach
Authors: Cheung, CF 
Keywords: Biomedical
Freeform surfaces
Orthopaedic implants
Precision surface measurement
Ultra-precision machining
Ultra-precision polishing
Issue Date: 2011
Source: International journal of nanomanufacturing, 2011, v. 7, no. 5-6, p. 393-408 How to cite?
Journal: International Journal of Nanomanufacturing 
Abstract: Superfinished freeform surfaces are vital to prolong the life of orthopaedic implants against corrosion and wear debris. However, the bearing surfaces of knee implants are usually freeform surfaces which are difficult to be designed, fabricated and measured with sub-micrometer form accuracy and surface finish in the nanometer range. This paper presents an integrated approach for supporting design, ultra-precision polishing and measurement of superfinished orthopaedic implants for bio-medical applications. The platform mainly consists of five key modules which include CAD model design module, data exchange module, model-based simulation system, tool path generator, as well as freeform measurement and characterisation module, respectively. A prototype of the integrated platform has been built and the technological merits of the platform have been realised through a series of experimental work. The results show that the form accuracy and surface roughness of the superfinished surfaces can be reduced effectively with the use of the integrated approach.
ISSN: 1746-9392
DOI: 10.1504/IJNM.2011.043694
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