Scholarlink

<p>Effect of relative humidity in Fused Deposition Modeling&#xa0;specimens on tensile and fatigue mechanical properties is evaluated. Virgin and recycled PLA specimens are generated using a factorial DoE study with three factors: Relative humidity (three levels 18%, 22%, and 26%); number of perimeters (two levels: 3 and 6 contours); and nozzle temperature (two levels: 190&#xa0;°C and 220&#xa0;°C).&#xa0;UTS is&#xa0;output factor of&#xa0;ANOVA. Virgin and recycled PLA specimens with the highest UTS values were fatigue tested under cyclic tensile loading, with stress increments from 50 to 90% UTS in 10% increments. The objective is to determine the number of cycles to failure. Results show that virgin PLA achieves higher UTS values than recycled PLA.&#xa0;The combination of recycled PLA with 18%HR, six contours, and a nozzle temperature of 190&#xa0;°C achieves a UTS of 29&#xa0;MPa,&#xa0;higher&#xa0;than its own filament of 18&#xa0;MPa and&#xa0;more than 100 × 10<sup>3</sup>cycles to fatigue.</p> Graphical abstract <p></p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Study on the ultimate tensile stress and fatigue life in recycled PLA printed by FDM with different percentages of relative humidity

  • 期刊论文

  • 发表日期：

    2025年1月24日

查看全文
  • S. L. Rodríguez-Reyna,
  • Fausto Ledezma-Mondragón,
  • J. H. Díaz-Aguilera,
  • H. R. Acevedo-Parra,
  • Fidencio Tapia

摘要

Effect of relative humidity in Fused Deposition Modeling specimens on tensile and fatigue mechanical properties is evaluated. Virgin and recycled PLA specimens are generated using a factorial DoE study with three factors: Relative humidity (three levels 18%, 22%, and 26%); number of perimeters (two levels: 3 and 6 contours); and nozzle temperature (two levels: 190 °C and 220 °C). UTS is output factor of ANOVA. Virgin and recycled PLA specimens with the highest UTS values were fatigue tested under cyclic tensile loading, with stress increments from 50 to 90% UTS in 10% increments. The objective is to determine the number of cycles to failure. Results show that virgin PLA achieves higher UTS values than recycled PLA. The combination of recycled PLA with 18%HR, six contours, and a nozzle temperature of 190 °C achieves a UTS of 29 MPa, higher than its own filament of 18 MPa and more than 100 × 103cycles to fatigue.

Graphical abstract