Comparison of notch fabrication methods on the impact strength of FDM-3D-printed PLA specimens

Meltem Eryildiz

doi:10.1515/mt-2022-0306

Artikel

Comparison of notch fabrication methods on the impact strength of FDM-3D-printed PLA specimens

Meltem Eryildiz
Meltem Eryildiz, born in 1987, works at Beykent University, Istanbul, Türkiye. She obtained her bachelor’s degree, master’s degree, and PhD degree in the Department of Mechanical Engineering at Yildiz Technical University, Turkey in 2009, 2014, and 2020, respectively. Her research interests mainly focus on additive manufacturing, polymer composites, polymer nanocomposites, and manufacturing processes.

Veröffentlicht/Copyright: 8. März 2023

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Abstract

In this study, the effect of the notch fabrication method (printing the notch on the part, and machining the notch) on the impact results of 3D-printed polylactic acid (PLA) was investigated. Sensitivity to build orientation was also noted in both test situations. The impact test specimens were printed using an FDM-based printer with or without a notch at various build and print orientations. Un-notched specimens were then machined to create notches. To simulate the impact effects, Ansys software was employed to create a finite element model, and the results of the finite element analysis were consistent with the experimental results. According to the findings, the impact strength of the specimens with 3D-printed notches increased by 11–38% compared to specimens whose notch was machined after the rectangular bars were 3D printed. In addition, it has been observed that the build and print orientations affect the impact strength.

Keywords: build orientation; Charpy impact strength; finite element analysis; fused deposition modeling; impact testing

Corresponding author: Meltem Eryildiz, Department of Mechanical Engineering, Faculty of Engineering and Architecture, Beykent University, Istanbul, Türkiye, E-mail: meltemeryildiz@beykent.edu.tr

About the author

Meltem Eryildiz

Meltem Eryildiz, born in 1987, works at Beykent University, Istanbul, Türkiye. She obtained her bachelor’s degree, master’s degree, and PhD degree in the Department of Mechanical Engineering at Yildiz Technical University, Turkey in 2009, 2014, and 2020, respectively. Her research interests mainly focus on additive manufacturing, polymer composites, polymer nanocomposites, and manufacturing processes.

Author contributions: The author has accepted responsibility for the entire content of this submitted manuscript and approved submission.
Research funding: None declared.
Conflict of interest statement: The author declares no conflicts of interest regarding this article.

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Published Online: 2023-03-08

Published in Print: 2023-03-28

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https://doi.org/10.1515/mt-2022-0306

Schlagwörter für diesen Artikel

build orientation; Charpy impact strength; finite element analysis; fused deposition modeling; impact testing