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Approximation of Dupin cyclide patches by ringed surfaces and its application towards curvature-adapted 5-axis CNC machining

Lindauerova, A.; Bizzarri, M.; Bo, P.; Krasauskas, R.; Barton, M. (2026-06-01)

We propose an algorithm for approximating a Dupin cyclide patch using a union of motions of circular (flat-end) and/or toroidal cutters. The method employs an adapted curvature-matched tilt function designed to achieve both ...

Robust PPG-exclusive Heart Rate Estimation during Maximal Exercise Using Population-Based Priors

De Giovanni, E.; Urteaga, I.; Croci, M.; Teijeiro, T. (2026-01-01)

PPG is the main technology for wearable heart rate (HR) monitoring. However, motion artifacts during intense physical activity reduce its reliability due to spectral overlap with the cardiac signal. This study investigates w...

Curvature-matched 5-axis CNC machining using non-circular toroidal cutters

Kruppa, K.; Bizzarri, M.; Bo, P.; Barton, M. (2026-01-01)

Highly accurate 5-axis CNC machining requires a good, ideally higher order, match between the cutting tool and the reference surface along a common tangent direction. It has been shown that one can apply this, so-called curv...

Corrosion and wear resistant yttria-stabilised zirconia (YSZ) coatings on stainless-steel via laser deposition

Chih-Ling, L.; Weikang, L.; Zhiming, S.; Rincón, M.; Sihai, J.; Han, H.; Mingyuan, L. (2026-10-12)

Yttria-stabilized zirconia (YSZ) is a promising protective coating for stainless-steel, but its direct deposition has achieved limited success due to difficulties in forming dense coatings with strong interfacial bonding. In...