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Etat de l’art en super-finition des surfaces complexes (pour application en optique, issue d’impression 3D, implants médical...)| old_uid | 10887 |
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| title | Etat de l’art en super-finition des surfaces complexes (pour application en optique, issue d’impression 3D, implants médical...) |
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| start_date | 2016/02/16 |
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| schedule | 14h |
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| online | no |
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| summary | The ability to fabricate complex surfaces (aspheric and freeform) with high shape accuracy and super fine surface finish is increasingly becoming a critical enabler for a range of state-of-the-art technology and scientific research. Applications range widely from next generation Extreme Ultra-Violet (EUV) lithography to highly customized medical implants produced by scanning and 3D printing.
In the past, incremental refinements to traditional fabrication methods such as grinding, lapping and polishing using semi-automated machinery have usually provided much of the necessary improvements in the fabrication chain. These refinements were often achieved through a deeper understanding of the chemical and mechanical relationship in material removal conditions, for various categories of material. However, it is now becoming routine for fully automated CNC finishing technologies to be employed in the final fabrication stages.
In this lecture, a survey including some of the most recent developments in super fine finishing technologies will be presented, including “grinding processes” (fixed abrasive cutting in ductile regime), “polishing processes” (loose abrasives acting mechanically and/or chemically), and some additional information regarding non-conventional processes. |
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| responsibles | Fenouil |
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