Het eerder project 21_100 POC Scheldemodel resulteerde in een nieuw innovatief idee voor het circulair bouwen van een schaalmodel. Het concept omvat het frezen van een schaalmodel uit een materiaal met lage smelttemperatuur (+/- 40°C). Tijdens het project 21_100 werd het concept van de techniek reeds voldoende afgetoetst en de haalbaarheid op grotere schaal positief bevonden.
Niettemin zijn er nog veel openstaande vragen welke beantwoord dienen te worden eer de benodigde investering in infrastructuur en materiaal met voldoende vertrouwen en dus op een verantwoorde manier kan gebeuren.
Binnen het project zijn er 2 hoofdonderwerpen welke nog verdere ontwikkeling vereisen:
1. Werking van het freesportaal
Synergie tussen positiebepaling en sturing van zowel het portaal als de freesrobot voor een real-time correctie van het freesprotocol. Op deze manier kan met standaard (goedkope) componenten toch een voldoende nauwkeurigheid behaald worden.
2. Keuze van het freesmateriaal
de belangrijkste voorwaarden waaraan het freesmateriaal moet voldoen zijn:
Het polymeer (PTMEG) voldoet hieraan (getest in project 21_100). Niettemin voor effectieve toepassing bij de bouw van schaalmodellen zijn er andere eigenschappen die minder gunstig zijn. Het materiaal heeft bijvoorbeeld een lange stoltemperatuur, waardoor bij grotere diktes de wachttijd voor stolling wel eens ongewenst langdurig kan zijn. Hier is dus zeker nog ruimte voor optimalisatie voor de specifieke toepassing voor de bouw van schaalmodellen.
Voor de verdere uitwerking van beide onderwerpen is de kennis binnen SPFO ontoereikend. Daarom werd een aanvraag ingediend bij PIO om hier verdere ondersteuning bij te verkrijgen. Dit werd toegekend op 21/11/2022. Met de bijstand van PIO willen we deze verdere ontwikkeling bewekstelligen.
Het is tevens voorzien om een proefopstelling waarbij een schaalmodel van +/- 4 m² gebouwd wordt met de voorgestelde techniek en materiaal als uiteindelijke proof of concept.
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