A study for geometrical error in micro-geometries using VAT photopolymerization Academic Article in Scopus uri icon

abstract

  • A set of specimens was manufactured using VAT photopolymerization to study the relative error caused between different CAD geometries (i.e., Hexagonal, Pentagonal, Quadrangular, Circular, and Triangular) and manufactured workpieces. VAT photopolymerization was studied to understand the causes of errors in processing using ABS Flex White as resin. To accomplish the study of the geometry's characterization, three replicates were measured and characterized. The manufacturing area was divided into four regions for the characterization, and the test probes were measured dimensionally by comparing the CAD design with the manufactured pieces. According to the results, triangular and circular geometries resulted in a lower relative error for solid and hollow samples, which might be attributed to the over-cured voxels and the angle in these geometries. For geometries produced at the microscale, there must be a match between the variation of the internal angle and, the voxel size and the lamp power density along the platform. © 2024 The Author(s)

publication date

  • October 1, 2024