Characterization of 3D printed long fibre reinforced composites

Justo, J.; Távara, L.; García-Guzmán, L.; Parı́s, F.

doi:10.1016/j.compstruct.2017.11.052

Cited by 373 publications

(209 citation statements)

References 29 publications

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“…It has been reported that hybrid high modulus (HM) carbon fibre composite have compressive strength with 30% more axial modulus than intermediate modulus (IM) carbon fibre composites for 3D printed functional parts [20]. Some researchers outlined that reinforced nylon parts have higher mechanical properties than the nonreinforced nylon parts [21]. The compressive strength of the 3D printed poly amide (PA)12 composite lattice structures with fibre-reinforcements is lower than that without fibre-reinforcements, but the repetitive energy absorption property of the 3D printed PA12 composites lattice structures with fibre-reinforcements are more stable than that without fiber-reinforcements [22].…”

Section: Introductionmentioning

confidence: 99%

On compressive and morphological features of 3D printed almond skin powder reinforced PLA matrix

Singh

Kumar

Preet

2020

Mater. Res. Express

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This paper reports the compressive, morphological and surface hardness properties of almond skin powder reinforced polylactic acid (PLA) matrix based 3D printed functional prototypes prepared by fused filament fabrication (FFF) as biomedical scaffolds. In this study the 3D printed functional parts were subjected to compression, morphological and Shore D hardness investigations. The results of this study highlight that maximum compressive strength at peak (37.712 MPa), maximum compressive strength at break (33.93 MPa) and Young's modulus (387.80 MPa) was observed in case of sample printed at infill density 100%, infill angle 90°and infill speed 70 mm s −1 (as per ASTM D695). The maximum modulus of toughness as 3.47 MPa was observed in the case of printed sample at infill density 60%, infill angle 60°and infill speed 70 mm s −1 . The results are supported by optical photomicrographs and Shore D hardness. Finally mathematical equations were developed (as empirical model) to predict different mechanical properties (based upon historical data approach) supported by Taguchi analysis.

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Section: Introductionmentioning

confidence: 99%

On compressive and morphological features of 3D printed almond skin powder reinforced PLA matrix

Singh

Kumar

Preet

2020

Mater. Res. Express

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“…Currently, elements produced by Fused Filament Fabrication (FFF) additive manufacturing are mainly used for applications with no or only few structural requirements in building construction (especially when thinking about constructive applications as part of the main supporting structure) and the testing procedures for the mechanical behavior focus on the testing of plastics [9][10][11][12][13]. The evaluation of the mechanical behavior (mainly just using small scale tensile tests) has been carried out in the course of several experimental investigations [14][15][16][17][18]. In [19], for example, especially the influence of different print layer orientations was investigated, resulting in a degradation in strength compared with bulk material properties (30-53%, depending on orientation) and as manufactured properties and as manufactured properties as reported by the FDM vendor (36-63%, depending on orientation).…”

Section: Test Specimens and Configurationmentioning

confidence: 99%

Optiknot 3D—Free-Formed Frameworks out of Wood with Mass Customized Knots Produced by FFF Additive Manufactured Polymers: Experimental Investigations, Design Approach and Construction of a Prototype

Kromoser

Pachner

2020

Polymers

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Free-formed frameworks are architecturally appealing constructions. They allow for maximum creative freedom as well as for a structural optimization of the support structure. The design and construction of these kind of structures is complex however, and therefore challenging, with each frame member having an individual length, each cladding plate an individual dimension and especially each knot having an individual geometry. The result is that geometry optimization and production technology become the most important processes when striving for an economic and ecological construction. The goals of the authors are the automation of the design process by applying a parametric model and the collection of the complete complexity in the knots as well as the production of these knots without material wastage by additive manufacturing. The development process was split into three different phases: (1) Preliminary experiments determining the tension, compression and bending load-bearing behavior of the knots produced by additive manufacturing, using different polymer-based materials: ABS, ASA, PA-CF, PA6CT, PCX, PETG and a mixture of PLA and ABS.(2) Development of an automated digital workflow for the design and production of these structures by the use of a parametric approach. (3) Design, production and assembly of a full-scale prototype in the form of a free-formed shell structure spanning an area of 20 m 2 . The prototype was made from fumed oak wood members in combination with white stained plywood panels connected by knots produced by Fused Filament Fabrication (FFF) additive manufacturing, using polymer-based materials and screws. At the end of the contribution, a summary and an outlook on further research is given.

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“…6 34 In addition to above-mentioned materials, carbon-fiber and glass-fiber reinforced composite filament materials are used in 3D printing devices. Justo et al [42] experimentally tested specimens printed from the reinforced endless carbon-fiber reinforced filaments with a high ratio of carbon and measured the ultimate stress values of 700 MPa. In another reported study, the processability of glass fiber-reinforced ABS composites with three different glass fiber proportions was examined.…”

Section: Printing Filament Materialsmentioning

confidence: 99%

Investigation on the manufacturing variants influential on the strength of 3D printed products

Meram¹,

Sözen²

2020

Res. Eng. Struct. Mater.

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This paper investigates the manufacturing variants influential on the strength of 3D printed products. In contrast to the traditional manufacturing methods which produce the final product via removing materials from parts, in 3D printing technology the products are provided with adding layer by layer directly from a digital file. 3D printing technology due to overcoming the many difficulties and limitations of conventional fabrication approaches is a rapidly progressing technology which takes attention in many industries such as aerospace, automotive, medical and building industries. This paper aims to research the variants affecting the mechanical properties of components produced by 3D printing technologies. To reach this aim a comprehensive review was conducted to determine the various process and geometric parameters in 3D printing technologies. The conducted literature survey results indicate that besides the filament material, the nozzle speed and diameter, layer thickness, filament diameter, printing raster angle, printing pattern, temperature and infill density are parameters which influence the final product quality and mechanical properties in term of ultimate tensile strength, yield stress and elasticity modulus. It is concluded that 3D printing filament materials strength has direct affect on the strength of final product. By providing the adequate thermal behavior of the system, the cohesion between layers can be improved. Extrusion speed affects surface roughness and quality of the produced components. Nozzle diameter has a significant influence on interlayer cohesion. The honeycomb pattern due to facilitating the load transfer between layers provides higher mechanical strength. Findings of this study will guide the researchers and manufacturers to select appropriate printing parameters to produce component with optimum mechanical properties.

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Characterization of 3D printed long fibre reinforced composites

Cited by 373 publications

References 29 publications

On compressive and morphological features of 3D printed almond skin powder reinforced PLA matrix

On compressive and morphological features of 3D printed almond skin powder reinforced PLA matrix

Optiknot 3D—Free-Formed Frameworks out of Wood with Mass Customized Knots Produced by FFF Additive Manufactured Polymers: Experimental Investigations, Design Approach and Construction of a Prototype

Investigation on the manufacturing variants influential on the strength of 3D printed products

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