Toward a Better Understanding of the Fused Deposition Modeling Process: Comparison with Injection Molding

Askanian, Haroutioun; Lima, Daniel Muranaka de; Commereuc, Sophie; Verney, Vincent

doi:10.1089/3dp.2017.0060

Cited by 23 publications

(9 citation statements)

References 45 publications

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“…These results are completely different from what is observed from traditional methods such as CM or injection molding, where properties are more uniform in all axes. 18,[25][26][27] FDM can thus offer the possibility of tailoring axial properties by choosing the infill orientation to suit the use of the parts. In the present study, it has been observed that the further away from the 0 axis of fabrication, the lower are the mechanical properties.…”

Section: Effects Of Infill Line Orientationsmentioning

confidence: 99%

Mechanical properties of CF-reinforced PLA parts manufactured by fused deposition modeling

Magri

Mabrouk

Vaudreuil

et al. 2019

Journal of Thermoplastic Composite Materials

110

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Many parameters of fused deposition modeling (FDM) influence the resulting mechanical properties. This can become a key factor if those parts are intended for commercial applications. This study focuses on the influence of nozzle temperature and infill line orientations for parts made with short carbon fiber (CF)-reinforced polylactic acid (PLA). Tests bars made of PLA and PLA-CF composite were produced under carefully selected conditions. As expected, PLA-CF yields higher tensile properties compared to PLA, owing to the strengthening effect of high modulus CFs. Maximum tensile properties are attained for a nozzle temperature of 230°C, for both PLA and PLA-CF. This temperature was thus selected for probing the effects of infill orientations in test bars. Among the multiple orientations tested, the combination [0°, 15°, −15°] relative to the long axis of the test bar yields the highest levels of tensile properties for both PLA and PLA-CF over the “all-purpose” [45°, 135°] orientation. Annealing can also affect crystallinity and mechanical properties of manufactured parts. Through differential scanning calorimetric analyses, the degree of crystallinity was assessed for samples annealed under various conditions. Results show that annealing increases crystallinity in PLA and PLA-CF samples, with a lower cooling rate yielding higher values. The Young’s modulus exhibits the same behavior for annealed and as printed parts, with a lower cooling rate yielding higher modulus values. This is attributed to a relaxation of the material structure as well as to the orientation of polymer chains toward the CFs.

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Section: Effects Of Infill Line Orientationsmentioning

confidence: 99%

Mechanical properties of CF-reinforced PLA parts manufactured by fused deposition modeling

Magri

Mabrouk

Vaudreuil

et al. 2019

Journal of Thermoplastic Composite Materials

110

View full text Add to dashboard Cite

show abstract

“…Fused deposition modelling (FDM) is one of the cheapest AM techniques that are based on material extrusion [30]. The availability and the low cost of FDM made it a widespread printing technology that many hobbyists have taken up and used for many purposes [31,32,33]. Thermoplastic materials are commonly used in FDM because it is easy to shape them into filaments with specific sizes.…”

Section: Introductionmentioning

confidence: 99%

Additive Manufactured Sandwich Composite/ABS Parts for Unmanned Aerial Vehicle Applications

et al. 2018

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Fused deposition modelling (FDM) is one of most popular 3D printing techniques of thermoplastic polymers. Nonetheless, the poor mechanical strength of FDM parts restricts the use of this technology in functional parts of many applications such as unmanned aerial vehicles (UAVs) where lightweight, high strength, and stiffness are required. In the present paper, the fabrication process of low-density acrylonitrile butadiene styrenecarbon (ABS) with carbon fibre reinforced polymer (CFRP) sandwich layers for UAV structure is proposed to improve the poor mechanical strength and elastic modulus of printed ABS. The composite sandwich structures retains FDM advantages for rapid making of complex geometries, while only requires simple post-processing steps to improve the mechanical properties. Artificial neural network (ANN) was used to investigate the influence of the core density and number of CFRP layers on the mechanical properties. The results showed an improvement of specific strength and elastic modulus with increasing the number of CFRP. The specific strength of the samples improved from 20 to 145 KN·m/kg while the Young’s modulus increased from 0.63 to 10.1 GPa when laminating the samples with CFRP layers. On the other hand, the core density had no significant effect on both specific strength and elastic modulus. A case study was undertaken by applying the CFRP/ABS/CFRP sandwich structure using the proposed method to manufacture improved dual-tilting clamps of a quadcopter UAV.

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“…This printing strategy allowed us to analyze the effect of the delay time on the cohesion between the layers. In previous studies, the effect of the deposition delay time of the layers during the printing was analyzed where the results showed that better cohesion appeared when the polymer had a slow crystallization rate [ 46 , 48 ]. In this study, using simultaneous or sequential printing mode (different deposition delay time) did not show significant differences in mechanical properties.…”

Section: Resultsmentioning

confidence: 99%

“…All specimens were printed directly on the heating plate with a filling rate set to 100% and a linear infill pattern. All samples were printed in two different ways, the first way was simultaneous printing and the second was in sequence printing [ 48 ]. The smart irrigation prototypes were printed starting from the models developed with the 3D CAD software Autodesk Fusion 360.…”

Section: Methodsmentioning

confidence: 99%

Pozzolan Based 3D Printing Composites: From the Formulation Till the Final Application in the Precision Irrigation Field

2020

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A new eco-composite polymer for material extrusion fabrication based on fine fraction pozzolan waste was developed. In addition, the composite materials obtained were used to produce a self-watering pot with complex geometry and a permeable porous part to regulate the passage of water from the storage area to the roots of the plant. Moreover, the system was devised with a cover characterized by a UV-B barrier film. The results have shown the possibility of the 3D printing of complex geometric parts as microporous structures or thin films using a composite based on poly lactic acid (PLA) and pozzolan. The pozzolan has an effect of reinforcement for the composite and at the same time improves the cohesion between the layers of the part during printing.

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Toward a Better Understanding of the Fused Deposition Modeling Process: Comparison with Injection Molding

Cited by 23 publications

References 45 publications

Mechanical properties of CF-reinforced PLA parts manufactured by fused deposition modeling

Mechanical properties of CF-reinforced PLA parts manufactured by fused deposition modeling

Additive Manufactured Sandwich Composite/ABS Parts for Unmanned Aerial Vehicle Applications

Pozzolan Based 3D Printing Composites: From the Formulation Till the Final Application in the Precision Irrigation Field

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