RESUMEN
This paper focuses on a wear evaluation conducted for prototype spur and herringbone gears made from PET-G filament using additive manufacturing. The main objective of this study is to verify if 3D-printed gears can be considered a reliable choice for long-term exploitation in selected mechanical systems, specifically automated retail kiosks. For this reason, two methods were applied, utilizing: (1) vision-based inspection of the gears' cross-sectional geometry and (2) the statistical characterization of the selected kinematic parameters and torques generated by drives. The former method involves destructive testing and allows for identification of the gears' operation-induced geometric shape evolution, whereas the latter method focuses on searching for nondestructive kinematic and torque-based indicators, which allow tracking of the wear. The novel contribution presented in this paper is the conceptual and experimental application of the identification of the changes of 3D-printed parts' geometric properties resulting from wear. The inspected exploited and non-exploited 3D-printed parts underwent encasing in resin and a curing process, followed by cutting in a specific plane to reveal the desired shapes, before finally being subjected to a vision-based geometric characterization. The authors have experimentally demonstrated, in real industrial conditions, on batch production parts, the usefulness of the presented destructive testing technique providing valid indices for wear identification.
RESUMEN
The aim of the work is to present regenerative medicine achievement as an alternative SUI treatment and the variety of injected cells type as well as injection techniques itself with the analysis of their quality and possible the mechanism in which they reduce urinary incontinence symptoms. For over a decade numerous authors declare use of different type of autologous mesenchymal-derived stem cells (AMDC) in male and female SUI. The leakage improvement reached 80%, despite the number of injected cells as well as the injection technique. Important subject in the AMDC treatment is the precise cell material injection into the selected spot which might be possible with the use of the endoscopic assisting robot. The robotic supported system for cells procedure might bring the missing percentage in reaching the goal in SUI treatment.