Scholarlink

<p>This paper presents the results of an investigation into the mechanical properties of PLA+ specimens fabricated by additive manufacturing (FDM process) through tensile and compression tests. The samples were fabricated using three types of specimen geometry according to ASTM D638 standards and tested over three different time periods with the aim of investigating the effects of time dependent on mechanical behavior. Additional compression tests were conducted to study the effects of print orientation, horizontal versus vertical, and cooling fan settings during fabrication. Varying the tensile sample's gauge design changed yield stress by 9.5% and yield strain by 16.2%. An eight-day print-to-test interval under ambient conditions reduced yield stress by 5% yet increased ultimate tensile strain by 55%, indicating residual stress relaxation and secondary crystallization. Under compression, horizontal builds exhibited a 6.2% higher yield stress and a 36.8% higher yield strain, albeit at a 28.8% lower modulus than vertical builds. Collectively, this study presents the first comprehensive and unified dataset capturing the time-dependent mechanical response—under both tensile and compressive loading—of PLA+ components fabricated via fused deposition modeling (FDM). The investigation encompasses variations in print parameters, including cooling strategy and build orientation, as well as geometric configurations in accordance with ASTM D638 standards. This dataset serves as a foundational resource for the predictive modeling of the mechanical performance of FDM-printed PLA+ parts.</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

Influence of printing parameters on the tensile and compressive behavior of fused deposition modeled polylactic acid plus

  • 期刊论文

  • 发表日期：

    2025年9月2日

查看全文
  • Morteza Talati-Ahmad,
  • Hamed Ahmadi,
  • Gholamhosein Liaghat

摘要

This paper presents the results of an investigation into the mechanical properties of PLA+ specimens fabricated by additive manufacturing (FDM process) through tensile and compression tests. The samples were fabricated using three types of specimen geometry according to ASTM D638 standards and tested over three different time periods with the aim of investigating the effects of time dependent on mechanical behavior. Additional compression tests were conducted to study the effects of print orientation, horizontal versus vertical, and cooling fan settings during fabrication. Varying the tensile sample's gauge design changed yield stress by 9.5% and yield strain by 16.2%. An eight-day print-to-test interval under ambient conditions reduced yield stress by 5% yet increased ultimate tensile strain by 55%, indicating residual stress relaxation and secondary crystallization. Under compression, horizontal builds exhibited a 6.2% higher yield stress and a 36.8% higher yield strain, albeit at a 28.8% lower modulus than vertical builds. Collectively, this study presents the first comprehensive and unified dataset capturing the time-dependent mechanical response—under both tensile and compressive loading—of PLA+ components fabricated via fused deposition modeling (FDM). The investigation encompasses variations in print parameters, including cooling strategy and build orientation, as well as geometric configurations in accordance with ASTM D638 standards. This dataset serves as a foundational resource for the predictive modeling of the mechanical performance of FDM-printed PLA+ parts.