Research on the Influence of the Load Direction and the Cross-Section Shape on the Young's Modulus of Elements Produced by the Fused Deposition Modeling Method

• Published in: Journal of materials engineering and performance Vol. 31; no. 10; pp. 7906 - 7912
• Main Authors: Bembenek, Michał, Kowalski, Łukasz, Pawlik, Jan, Bajda, Szymon
• Format: Journal Article
• Language: English
• Published: New York Springer US 01.10.2022
• Subjects: Characterization and Evaluation of Materials; Chemistry and Materials Science; Corrosion and Coatings; Engineering Design; Materials Science; Quality Control; Reliability; Safety and Risk; Technical Article; Tribology; compressive strength; Young modulus; elastic modulus; 3D printing; FDM
• ISSN: 1059-9495; 1544-1024
• DOI: 10.1007/s11665-022-06848-8

The mechanical properties and behavior of fused deposition modeling (FDM) additive manufactured (AM) polymeric products are influenced by a variety of parameters. The subject of this research was to determine how parameters such as compressive load direction and the shape of the 3D-printed specimens affect elastic modulus measurements for four different polylactic acid (PLA) filaments. The methods of measurement of compressive Young’s modulus of FDM 3D prints are not yet clearly standardized, although their values are important in creating accurate numerical models of the strength AM products. In this paper, the authors prepared four sets of specimens. Each set consisted of five sample triplets—one with circular, one with triangular and three with square cross sections to perform tri-directional quasistatic compression trials. Based on the results, it was concluded that the shape of the specimens did not affect elastic modulus values for sets made of the same material. However way the direction of the load applied caused test results to vary differently for different types of PLA material.