Experimental Investigations of Process Parameters Influence on Rheological Behavior and Dynamic Mechanical Properties of FDM Manufactured Parts

Mohamed, Omar Ahmed; Masood, Syed H.; Bhowmik, Jahar

doi:10.1080/10426914.2015.1127955

Cited by 56 publications

(21 citation statements)

References 19 publications

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“…Among all the parameters, the number of contours was the most influential since they add stiffness to the part. This was also observed by Mohamed et al for printed specimens tested using the DMA [74,75,76]. The dynamic stiffness of PC-ABS samples was studied using DMA.…”

Section: Experimental Characterization Of Mechanical Propertiessupporting

confidence: 67%

Characterization of the Mechanical Properties of FFF Structures and Materials: A Review on the Experimental, Computational and Theoretical Approaches

et al. 2019

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The increase in accessibility of fused filament fabrication (FFF) machines has inspired the scientific community to work towards the understanding of the structural performance of components fabricated with this technology. Numerous attempts to characterize and to estimate the mechanical properties of structures fabricated with FFF have been reported in the literature. Experimental characterization of printed components has been reported extensively. However, few attempts have been made to predict properties of printed structures with computational models, and a lot less work with analytical approximations. As a result, a thorough review of reported experimental characterization and predictive models is presented with the aim of summarizing applicability and limitations of those approaches. Finally, recommendations on practices for characterizing printed materials are given and areas that deserve further research are proposed.

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Section: Experimental Characterization Of Mechanical Propertiessupporting

confidence: 67%

Characterization of the Mechanical Properties of FFF Structures and Materials: A Review on the Experimental, Computational and Theoretical Approaches

et al. 2019

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“…Mohamed et. al, [25] shared similar results, finding the flexural modulus was higher in PC/ABS material printed at 0.254mm, in between material printed at 0.1778 mm and 0.3302 mm layer thickness.…”

Section: Introductionsupporting

confidence: 56%

Effect of layer thickness and cross-section geometry on the tensile and compression properties of 3D printed ABS

Nomani

Wilson

Paulino

et al. 2020

Materials Today Communications

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This study examines the influence of deposition layer thickness on the mechanical properties of printed ABS material when manufacturing using Fused Filament Fabrication (FFF). Tensile and compression testing was performed to ASTM standards on samples printed with layer thickness between 0.2mm and 0.8mm. Results found material strength and stiffness was greatest using smaller layer thicknesses, compared with larger layer thicknesses e.g. (0.2) = 31.5 MPa, (0.2) = 38.2 MPa, compared with (0.8) = 23.0 MPa, (0.8) =31.0 MPa. The recorded changes in mechanical properties are explained by mechanisms relating to manufacturing residual porosity, the number of deposited layers promoting interlayer bonding strength, and the extrusion process resulting in material shear hardening. Findings have implications on the ability to reduce the overall part print time using a method of increased material deposition, and may have profound implications on comparative part integrity when utilising large volume deposition printing formats with unmodified ABS polymer. The findings from this study also highlight the need for current mechanical testing standards to accommodate appropriate guidelines for the testing of 3D printed material, given the wide variance of measured tensile and compression properties based on layer thickness and printed geometry.

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“…FDM applications have seen a predominant growth in personal prototyping fabrication, mainly due to a sharp cost reduction of FDM machines [ 4 ]. However, commercial FDM applications are still leading the market, mainly for the formation of automotive parts and aerospace prototypes [ 5 ], electronic devices, house construction, among others [ 6 , 7 ]. Promising results have also been found in the field of medicine for the production of biomedical devices and materials, such as bone replacement scaffolds [ 8 , 9 , 10 ].…”

Section: Introductionmentioning

confidence: 99%

Mechanical and Physicochemical Properties of 3D-Printed Agave Fibers/Poly(lactic) Acid Biocomposites

et al. 2021

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In order to provide a second economic life to agave fibers, an important waste material from the production of tequila, filaments based on polylactic acid (PLA) were filled with agave fibers (0, 3, 5, 10 wt%), and further utilized to produce biocomposites by fused deposition modeling (FDM)-based 3D printing at two raster angles (−45°/45° and 0/90°). Differential scanning calorimetry, water uptake, density variation, morphology, and composting of the biocomposites were studied. The mechanical properties of the biocomposites (tensile, flexural, and Charpy impact properties) were determined following ASTM international norms. The addition of agave fibers to the filaments increased the crystallinity value from 23.7 to 44.1%. However, the fibers generated porous structures with a higher content of open cells and lower apparent densities than neat PLA pieces. The printing angle had a low significant effect on flexural and tensile properties, but directly affected the morphology of the printed biocomposites, positively influenced the impact strength, and slightly improved the absorption values for biocomposites printed at −45°/45°. Overall, increasing the concentrations of agave fibers had a detrimental effect on the mechanical properties of the biocomposites. The disintegration of the biocomposites under simulated composting conditions was slowed 1.6-fold with the addition of agave fibers, compared to neat PLA.

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Experimental Investigations of Process Parameters Influence on Rheological Behavior and Dynamic Mechanical Properties of FDM Manufactured Parts

Cited by 56 publications

References 19 publications

Characterization of the Mechanical Properties of FFF Structures and Materials: A Review on the Experimental, Computational and Theoretical Approaches

Characterization of the Mechanical Properties of FFF Structures and Materials: A Review on the Experimental, Computational and Theoretical Approaches

Effect of layer thickness and cross-section geometry on the tensile and compression properties of 3D printed ABS

Mechanical and Physicochemical Properties of 3D-Printed Agave Fibers/Poly(lactic) Acid Biocomposites

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