Eventos Anais de eventos
COBEM 2017
24th ABCM International Congress of Mechanical Engineering
Comparison of the porosity of scaffolds manufactured by two additive manufacturing technologies: SLA and FDM
Submission Author:
Bernardo Vieira Magaldi , RJ
Co-Authors:
Bernardo Vieira Magaldi, Marianna de Oliveira da Costa Maia Pinto , Rossana Thiré, Anna Carla Araujo
Presenter: Bernardo Vieira Magaldi
doi://10.26678/ABCM.COBEM2017.COB17-1460
Abstract
Scaffolds are 3D-porous biomaterials used for tissue engineering. Their physical, chemical and biological properties are strongly dependent upon the fabrication process. Additive Manufacturing (AM) is a fabrication process for serial production of complex structures designed by virtual models and based on the addition of layers. The raw material used in SLA is a liquid resin that is transformed to the solid state by the photopolymerization process. FDM produces each layer by heating-extrusion of polymer/composite filament. The objective of this work is to evaluate the structure of the scaffolds produced by the two processes: FDM and SLA. Different geometry configurations are manufactured and the volume of workpieces are compared as quality integrity of the specimens. In spite of using different polymers for each AM process, it was observed that FDM parts presented higher porosity and lower dimensional deviation in relation to digital model than SLA parts for all geometries. However, the quality of deposited filaments was higher for SLA scaffolds.
Keywords
Additive manufacturing, Stereolithography, Scaffolds, Porosity, fused deposition modeling
