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<p>In this work, an experimental design was developed using the design of experiments technique to determine the effects of printing parameters in fused deposition modeling (FDM) processes on dimensional deviations between design and parts manufactured with Ultrafuse® PLA PRO1, a new type of PLA with improved mechanical properties and greater thermal stability than conventional PLA. Afterwards, dimensional inspection tests to identify dimensional deviations on X, Y, and Z directions and dimensional deviations in volume were performed on cubical specimens manufactured on a semi-industrial printer. The response surfaces showed that extruder temperature, platform temperature, raster angle, and infill percentage have influenced statistically significant dimensional deviation in printed parts, while speed printing has no influence in the [50,60] mm/s range. The values of extruder and platform temperatures that minimize dimensional deviation are 200.0&#xa0;°C and 40.0&#xa0;°C, respectively. A raster angle of 0° and low infill percentage cause less dimensional deviation. These values were employed on the manufacture via FDM of a prosthetic hand component, and the dimensional accuracy obtained was within the established limits of ISO 2768–1:1989 standard. When parts were worked at much higher printing speeds than 60&#xa0;mm/s, an increase in the dimensional deviations occurred, although they remained within tolerance limits for manufacturing established by the standard.</p>

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Influence of FDM printing parameters on dimensional accuracy in parts made of an improved PLA

  • 期刊论文

  • 发表日期：

    2025年8月15日

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  • Gabriel A. P. de Mélo,
  • José M. A. Barbosa,
  • Jorge A. P. Carrasco,
  • Wanderley F. Amorim Júnior,
  • Antonio A. Silva,
  • Tiago L. Rolim

摘要

In this work, an experimental design was developed using the design of experiments technique to determine the effects of printing parameters in fused deposition modeling (FDM) processes on dimensional deviations between design and parts manufactured with Ultrafuse® PLA PRO1, a new type of PLA with improved mechanical properties and greater thermal stability than conventional PLA. Afterwards, dimensional inspection tests to identify dimensional deviations on X, Y, and Z directions and dimensional deviations in volume were performed on cubical specimens manufactured on a semi-industrial printer. The response surfaces showed that extruder temperature, platform temperature, raster angle, and infill percentage have influenced statistically significant dimensional deviation in printed parts, while speed printing has no influence in the [50,60] mm/s range. The values of extruder and platform temperatures that minimize dimensional deviation are 200.0 °C and 40.0 °C, respectively. A raster angle of 0° and low infill percentage cause less dimensional deviation. These values were employed on the manufacture via FDM of a prosthetic hand component, and the dimensional accuracy obtained was within the established limits of ISO 2768–1:1989 standard. When parts were worked at much higher printing speeds than 60 mm/s, an increase in the dimensional deviations occurred, although they remained within tolerance limits for manufacturing established by the standard.