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dc.contributor.authorHarpool, Tanner D.
dc.contributor.authorAlarifi, Ibrahim M.
dc.contributor.authorAlshammari, Basheer A.
dc.contributor.authorAabid, Abdul
dc.contributor.authorBaig, Muneer
dc.contributor.authorMalik, Rizwan A.
dc.contributor.authorSayed, Ahmed M.
dc.contributor.authorAsmatulu, Ramazan
dc.contributor.authorEl-Bagory, Tarek Mohamed A.Ali
dc.date.accessioned2021-05-27T15:13:10Z
dc.date.available2021-05-27T15:13:10Z
dc.date.issued2021-04-25
dc.identifier.citationHarpool, T. D., Alarifi, I. M., Alshammari, B. A., Aabid, A., Baig, M., Malik, R. A., . . . El-Bagory, T. M. A. A. (2021).Evaluation of the infill design on the tensile response of 3d printed polylactic acid polymer. Materials, 14(9) doi:10.3390/ma14092195en_US
dc.identifier.issn1996-1944
dc.identifier.urihttps://doi.org/10.3390/ma14092195
dc.identifier.urihttps://soar.wichita.edu/handle/10057/20061
dc.descriptionOpen Accessen_US
dc.description.abstractThe current study explores the effects of geometrical shapes of the infills on the 3D printed polylactic acid (PLA) plastic on the tensile properties. For this purpose, by utilizing an accessible supply desktop printer, specimens of diamond, rectangular, and hexagonal infill patterns were produced using the fused filament fabrication (FFF) 3D printing technique. Additionally, solid samples were printed for comparison. The printed tensile test specimens were conducted at environmental temperature, Ta of 23 °C and crosshead speed, $V_{C.H}$ of 5 mm/min. Mainly, this study focuses on investigating the percentage infill with respect to the cross-sectional area of the investigated samples. The mechanical properties, i.e., modulus of toughness, ultimate tensile stress, yield stress, and percent elongation, were explored for each sample having a different geometrical infill design. The test outcomes for each pattern were systematically compared. To further validate the experimental results, a computer simulation using finite element analysis was also performed and contrasted with the experimental tensile tests. The experimental results mainly suggested a brittle behavior for solidly infilled specimen, while rectangular, diamond, and hexagonal infill patterns showed ductile-like behavior (fine size and texture of infills). This brittleness may be due to the relatively higher infill density results that led to the high bonding adhesion of the printed layers, and the size and thickness effects of the solid substrate. It made the solidly infilled specimen structure denser and brittle. Among all structures, hexagon geometrical infill showed relative improvement in the mechanical properties (highest ultimate tensile stress and modulus values 1759.4 MPa and 57.74 MPa, respectively) compared with other geometrical infills. Therefore, the geometrical infill effects play an important role in selecting the suitable mechanical property’s values in industrial applications.en_US
dc.description.sponsorshipThis research is supported by the Structures and Materials (S&M) Research Lab of Prince Sultan University. Furthermore, the authors acknowledge the support of Prince Sultan University for paying the article processing charges (APC) of this publicationen_US
dc.language.isoen_USen_US
dc.publisherMDPIen_US
dc.relation.ispartofseriesMaterials;Vol. 14, Iss. 9
dc.subject3D printingen_US
dc.subjectInfill shapesen_US
dc.subjectFinite element analysisen_US
dc.subjectConstruct stressen_US
dc.subjectStrain diagramsen_US
dc.subjectFused filament fabrication (FFF)en_US
dc.titleEvaluation of the infill design on the tensile response of 3d printed polylactic acid polymeren_US
dc.typeArticleen_US
dc.rights.holderCopyright: © 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https:// creativecommons.org/licenses/by/ 4.0/).en_US


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