Numerical Simulation of Sintering of DLP Printed Alumina Ceramics

Digital Light Processing (DLP) technology exhibits the capability of producing components with complex structures for a variety technical applications. Postprocessing additively printed ceramic has been shown to be an important step in determining final product resolution and mechanical qualities, particularly regard distortions resultant density. The goal this research is study sintering process parameters create nearly fully dense, defect-free, component. A high-solid-loading alumina slurry suitable rheological photopolymerisable characteristics DLP was created. TGA/DSC analysis used estimate thermal debinding parameters. debound parts studied by employing numerical model based on thermo-viscoelasticity theory describe process. validated Finite Element Modelling (FEM) code capable predicting shrinkage relative density changes during cycle, as well providing meaningful information shape. Archimedes’ principle scanning electron microscope (SEM) were characterise sintered validate model. Samples high (>98.5%) produced data showed close matches predicted shrinkages densities, less than 2% mismatch between experimental results simulations. current may allow effectively predict properties ceramics via tailor them specific