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| Format: | Recurso digital |
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Zenodo
2026
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| Online Access: | https://doi.org/10.5281/zenodo.20259275 |
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Table of Contents:
- <p class="MsoNormal"><span>This investigation was conducted to address the critical challenge of high surface roughness in Selective Laser Sintering (SLS), which significantly impacts the functional performance and dimensional accuracy of additively manufactured parts. The primary objective was to evaluate how build orientation influences the resulting surface integrity of Nylon 11 components.<span> </span>To achieve this, two square plate specimens were fabricated in horizontal and vertical orientations. Surface characterization was performed using the Alicona G5 Infinite Focus system, utilizing non-contact focus variation microscopy to capture 3D topographic data. </span></p> <p class="MsoNormal"><span>The resulting datasets were analyzed in Mountains Map software to calculate areal texture parameters according to ISO 25178-2.<span> </span>The study found that the vertically printed specimen exhibited a 51% increase in arithmetic mean height (Sa), rising from 14.95 µm (horizontal) to 22.63 µm. Furthermore, the vertical orientation showed nearly double the maximum height (Sz) and a more negative skewness (Ssk), indicating deeper valleys and sharper peaks. </span></p> <p class="MsoNormal"><span>These results confirm that build orientation is a critical determinant of surface quality, vertical surfaces suffer more severely from the staircase effect and adhered powder particles. Consequently, optimizing orientation is essential for enhancing the surface finish and reliability of SLS components.</span></p>