PLA Mechanical Performance Before and After 3D Printing

Houcine, Salem; Abouchadi, Hamid; ELBIKRI, Khalid

doi:10.14569/ijacsa.2022.0130340

Cited by 5 publications

(3 citation statements)

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“…The results obtained for Tough PLA were significantly different from those presented in the material datasheet [36]; in terms of the tensile strength, the average recorded value was 25% lower compared with the value of 46 MPa presented in the material's datasheet, and in terms of the elastic modulus, the average recorded value was 56% lower compared with the presented value of 2750 MPa. The results obtained for Tough PLA were similar to those obtained for usual PLA studied by other authors [13,14].…”

Section: Tensile Testssupporting

confidence: 90%

“…For example, Salem et al [ 13 ] studied the tensile properties of PLA (polylactic acid) in raw conditions and after 3D printing, because the properties given by the material supplier are not the same as the properties of the final part. The findings revealed a significant disparity between the performance of printed materials and the specifications outlined in their datasheets.…”

Section: Introductionmentioning

confidence: 99%

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A Study on Mechanical Properties of Low-Cost Thermoplastic-Based Materials for Material Extrusion Additive Manufacturing

Condruz,

Paraschiv,

Badea

et al. 2023

Polymers

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The present research focused on studying the mechanical properties of three commercially available thermoplastic-based materials used for the additive manufacturing (AM) fused filament deposition (FFD) method. The scientific motivation for the study was the limited information available in the literature regarding the materials’ properties, the inconsistencies that were recorded by other scientists between the materials’ properties and the technical datasheets and the anisotropic behavior of additively manufactured materials. Thereby, it was considered of great importance to perform an extensive study on several materials’ mechanical properties, such as tensile properties and flexural properties. Three materials were tested, Tough PLA, nGen CF10 and UltraFuse PAHT CF15. The tests consisted of monotonic tensile tests, open-hole tensile tests and three-point bending tests. The tests were assisted also with the use of microscopical investigations. Framed specimens’ configurations with two different raster orientations (90°/0° and −45°/+45°) were manufactured using an in-house-developed 3D printing equipment. The best mechanical performances were recorded for UltraFuse PAHT CF15. The 90°/0° raster orientations ensured the highest tensile, open-hole tensile and flexural strength, regardless of the material type, while the −45°/+45° raster orientations ensured the highest elongation values. The analysis showed the importance of the experimental validation of materials for AM.

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Section: Tensile Testssupporting

confidence: 90%

Section: Introductionmentioning

confidence: 99%

A Study on Mechanical Properties of Low-Cost Thermoplastic-Based Materials for Material Extrusion Additive Manufacturing

Condruz,

Paraschiv,

Badea

et al. 2023

Polymers

View full text Add to dashboard Cite

show abstract

“…There is a basis to support the statement that the electrical characteristics of an initial filament could undergo modification during the extrusion process through a printer nozzle, which could be described by the structural change. Many studies have investigated the structure and property change in the material after printing, where the effects of shape memory [ 17 ] and increased crystallinity [ 18 , 19 ] took place. If such effects cause a change in the electrical resistivity of a filament after printing, it could mean that the overall pattern of electrical resistivity of a printed part should be determined by the electrical resistivity of a traxel, rather than an initial filament.…”

Section: Introductionmentioning

confidence: 99%

Electrical Resistivity of 3D-Printed Polymer Elements

et al. 2023

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During this study, the resistivity of electrically conductive structures 3D-printed via fused filament fabrication (FFF) was investigated. Electrical resistivity characterisation was performed on various structural levels of the whole 3D-printed body, starting from the single traxel (3D-printed single track element), continuing with monolayer and multilayer formation, finalising with hybrid structures of a basic nonconductive polymer and an electrically conductive one. Two commercial conductive materials were studied: Proto-Pasta and Koltron G1. It was determined that the geometry and resistivity of a single traxel influenced the resistivity of all subsequent structural elements of the printed body and affected its electrical anisotropy. In addition, the results showed that thermal postprocessing (annealing) affected the resistivity of a standalone extruded fibre (extruded filament through a printer nozzle in freefall) and traxel. The effect of Joule heating and piezoresistive properties of hybrid structures with imprinted conductive elements made from Koltron G1 were investigated. Results revealed good thermal stability within 70 °C and considerable piezoresistive response with a gauge factor of 15–25 at both low 0.1% and medium 1.5% elongations, indicating the potential of such structures for use as a heat element and strain gauge sensor in applications involving stiff materials and low elongations.

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