[AIMLA] High-Fidelity Fabrication of HAR Microlens Arrays via Adaptive Toolpaths, Intelligent Feedback, and Elliptical Vibration Cutting

Ente: EC

Scadenza: 2029-08-22

Importo max: 165.205 EUR

Paese: EU

Descrizione

High-aspect-ratio microlens arrays (HAR MLAs) are essential for next-generation optical systems, yet their fabrication is limited by surface errors, tool-induced defects, and scalability issues on standard 3-axis ultra-precision machines. This project develops a fully integrated closed-loop framework combining curvature-adaptive volute spiral toolpaths, FEM simulations, physics-informed machine learning (PIML), and elliptical vibration cutting (EVC). Adaptive toolpaths ensure constant cutter engagement and uniform scallop height, while inverse modeling and geometric compensation minimize deflection and misalignment errors. Thermo-mechanical FEM simulations, validated experimentally on a KERN Evo system with piezo-dynamometer monitoring, capture cutting forces and stress fields to guide optimization. FEM outputs and force signals train PIML models embedding physical laws to predict tool wear, chatter, and surface deviations under sparse data. These models drive semi-automated adaptive corrections, targeting <1 µm form deviation, <10 nm roughness, >85% chatter suppression, ≥85% tool wear detection, and >70% burr reduction. Final validation with high-resolution profilometry and CMM confirms reproducibility across MLA geometries. Research will be conducted under Prof. Erhan Budak (Sabancı University), a leader in machining dynamics and PIML, with a secondment under Prof. Eiji Shamoto (Nagoya University), pioneer of EVC. This interdisciplinary fellowship will advance precision optics manufacturing, establish scalable methodologies for SMEs, and provide advanced training in adaptive toolpath design, simulation, and machine learning—supporting Europe’s strategic goals in advanced manufacturing and photonics.

Settori: Horizon Europe Topics

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