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Optimization of Dimensional Variation for Additive Manufacturing Using Response Surface Methodology Technique for Lattices Structure
(Instituto Tecnológico y de Estudios Superiores de Monterrey, 2020-12-02) Betancourt Chacón, Diego Antonio; Sandoval Robles, Jesús Alejandro; puelquio/tolmquevedo; Hernández Luna, Alberto Abelardo; Rodríguez González, Ciro Angel; School of Engineering and Sciences; Campus Monterrey; Vázquez Lepe, Elisa Virginia
In this work, metal powder bed fusion selective laser fusion (SLM) process was used for the fabrication of 3 different lattices structures because of its high resolution for complex geometries, there are plenty of research works in the parameter optimization for solid pieces, however, there is a lack of research for pieces with porosity and a micrometric scale where most of the measurements are not reported. To achieve this, different lattice geometries such as cubic, diamond and fluorite were manufactured, these were produced with different parameters, mainly varying the laser power, the scanning speed or exposure time, and scanning strategy using Surface Response Methodology to optimize the results. The struts from each lattice were measured in the Z and X axis, as well as the porosity of each piece. Additionally, compression test was performed to obtain the stress from the diamond a flourite lattice structure. The results are the parameters to manufacture pieces in micrometric scale for Renishaw AM400 with Stainless Steel 316L with a reduced dimensional difference from the CAD.

Ciencias Exactas y Ciencias de la Salud

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