A multi-factor correction matrix for SLA additive technology with the use of coordinate measuring technique
Author
Owczarek, Danuta
Harmatys, Wiktor
Jarocha, Angelika
Jarocha, Angelika
Published in
Measurement: Sensors
Numbering
Vol. 38, 101839
Release date
2025
Publisher
Elsevier
Language
English
DOI
https://doi.org/10.1016/j.measen.2025.101839
Keywords
SLA additive technology, stereolithography, 3D printing, accuracy, coordinate measurements
Abstract
The article presents issues related to SLA additive technology and the concept of 3D printing control by introducing corrections to the dimensions of objects at the design stage.
The research carried out in the Laboratory of Coordinate Metrology at the Cracow University of Technology was presented. The research included measurements with the use of selected coordinate systems. Replicas of gauge blocks (printed from Tough 2000 photocurable resin), a series of rings and a specially designed standard composed of basic geometric elements most commonly found in production (printed from three types of resins Grey, Tough 2000 and Clear) were measured. Based on the obtained measurement results, the first version of a special multi-factor correction matrix for SLA additive technology was developed and presented. The correction matrix enables the 3D printer operator to obtain the object in a way that is as consistent as possible with the expected values. The idea of the matrix is to provide practical guidelines on what correction should be done when entering the given input values at the design stage of the printing process, knowing the type of material, geometric shape and dimensions of the printed detail.
The concept was confirmed in the context of improving 3D printing accuracy. Possibilities of developing the concept were also proposed, with the idea of implementing the matrix into an expert system with the possible addition of elements of artificial intelligence.
