New models for energy beam machining enable accurate generation of freeforms

Axinte, Dragos A.; Billingham, John; Guillerna, A. Bilbao

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.

Citation

Axinte, D. A., Billingham, J., & Guillerna, A. B. (in press). New models for energy beam machining enable accurate generation of freeforms. Science Advances, 3(9), Article e1701201. https://doi.org/10.1126/sciadv.1701201

• Journal Article Type: Article
• Acceptance Date: Aug 29, 2017
• Online Publication Date: Sep 22, 2017
• Deposit Date: Sep 8, 2017
• Publicly Available Date: Sep 22, 2017
• Journal: Science Advances
• Electronic ISSN: 2375-2548
• Publisher: American Association for the Advancement of Science
• Peer Reviewed: Peer Reviewed
• Volume: 3
• Issue: 9
• Article Number: e1701201
• DOI: https://doi.org/10.1126/sciadv.1701201
• Public URL: https://nottingham-repository.worktribe.com/output/883984
• Publisher URL: http://advances.sciencemag.org/content/3/9/e1701201
• Contract Date: Sep 8, 2017