New models for energy beam machining enable accurate generation of freeforms

Axinte, Dragos A. and Billingham, John (2017) New models for energy beam machining enable accurate generation of freeforms. Science Advances, 3 (9). e1701201/1-e1701201/7. ISSN 2375-2548

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Abstract

We demonstrate that, despite differences in their nature, many energy beam controlled-depth machining processes (e.g. waterjet, pulsed laser, focused ion beam) can be modelled using the same mathematical framework – a partial differential evolution equation that requires only simple calibrations to capture the physics of each process. The inverse problem can be solved efficiently through numerical solution of the adjoint problem, and leads to beam paths that generate prescribed three-dimensional features with minimal error. The viability of this modelling approach has been demonstrated by generating accurate freeform surfaces using three processes that operate at very different length scales and with different physical principles for material removal: waterjet, pulsed laser and focused ion beam machining. Our approach can be used to accurately machine materials that are hard to process by other means for scalable applications in a wide variety of industries.

Item Type: Article
Schools/Departments: University of Nottingham, UK > Faculty of Science > School of Mathematical Sciences
Identification Number: 10.1126/sciadv.1701201
Depositing User: Eprints, Support
Date Deposited: 08 Sep 2017 12:09
Last Modified: 17 Nov 2017 11:52
URI: http://eprints.nottingham.ac.uk/id/eprint/45587

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