Micromechanical characterization of the material response in a PA12-SLS fabricated lattice structure and its correlation with bulk behavior

• DOI: 10.1016/j.polymertesting.2022.107556
• Publication Date: 2022-03-25T15:51:59Z
• Authors: L. Cobian; M. Rueda-Ruiz; J.P. Fernandez-Bl...; V. Martinez; F. Galvez; F. Karayagiz; T. Lück; J. Segurado; M.A. Monclus
• Keywords: Lattice (music); Selective laser sintering; Characterization

Selective laser sintering (SLS) of polymers has made possible the introduction lattice-based cells as building blocks polymer parts, allowing to obtain optimal specific properties. The actual mechanical performance an SLS part is strongly dependent on printing direction and shape. Nevertheless, macroscopic testing not usually due size restrictions fabricated part, it happens, for example, in materials. In this case, microscopic tests performed directly lattice surface become fundamental. work, behavior PA12 under a wide range strain rates from 10−3 103 s−1 different directions characterized using bulk samples compared with nanoindentation material surface. An excellent correlation was found between rate-dependent obtained at two scales, validating techniques characterizing response parts.