Composites Part Production with Additive Manufacturing Technologies

Türk, Daniel-Alexander; Kussmaul, Ralph; Zogg, Markus; Klahn, Christoph; Leutenecker-Twelsiek, Bastian; Meboldt, Mirko

doi:10.1016/j.procir.2017.03.359

Cited by 48 publications

(27 citation statements)

References 12 publications

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“…Depending on the application and material used, the printed object can be further polished and/or dyed. This technique is characterized by a high resolution, is suitable for functional polymers and does not require a support material or structures, so the printed structures can be used without further cleaning steps [ 19 ]. Polyamide 12 (PA12) or its powdered blends with PA6 were successfully printed through SLS and represents around 90% of the total industrial consumption [ 20 ].…”

Section: Short Overview Of the Main 3d-printing Techniquesmentioning

confidence: 99%

Recent Advances in 3D Printing of Aliphatic Polyesters

Chiulan

Frone

Brandabur³

et al. 2017

Bioengineering

136

121

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3D printing represents a valuable alternative to traditional processing methods, clearly demonstrated by the promising results obtained in the manufacture of various products, such as scaffolds for regenerative medicine, artificial tissues and organs, electronics, components for the automotive industry, art objects and so on. This revolutionary technique showed unique capabilities for fabricating complex structures, with precisely controlled physical characteristics, facile tunable mechanical properties, biological functionality and easily customizable architecture. In this paper, we provide an overview of the main 3D-printing technologies currently employed in the case of poly (lactic acid) (PLA) and polyhydroxyalkanoates (PHA), two of the most important classes of thermoplastic aliphatic polyesters. Moreover, a short presentation of the main 3D-printing methods is briefly discussed. Both PLA and PHA, in the form of filaments or powder, proved to be suitable for the fabrication of artificial tissue or scaffolds for bone regeneration. The processability of PLA and PHB blends and composites fabricated through different 3D-printing techniques, their final characteristics and targeted applications in bioengineering are thoroughly reviewed.

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Section: Short Overview Of the Main 3d-printing Techniquesmentioning

confidence: 99%

Recent Advances in 3D Printing of Aliphatic Polyesters

Chiulan

Frone

Brandabur³

et al. 2017

Bioengineering

136

121

View full text Add to dashboard Cite

show abstract

“…The mechanical performance of these composites under different loading condition have been evaluated [6][7][8][9][10][11][12]. On the other hand, new design principles and methods in printing progress are being developed, such as hot-press treatment to reduce porosity and improve the strength and stiffness of the printed composites [13][14][15][16][17]. For composite laminate, the stacking sequence of each ply with different angles must be optimised to achieve the designed stiffness on each direction [18][19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Performance-driven 3D printing of continuous curved carbon fibre reinforced polymer composites: A preliminary numerical study

Zhang

Yang

Sheng

2018

Composites Part B: Engineering

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This paper presents a new concept to place continuous curved fibres for carbon fibre reinforced polymer (CFRP) composites, which can be fulfilled by potential additive or hybrid manufacturing technology. Based on the loading condition, principal stress trajectories are generated through finite element analysis (FEA) and used as the guidance for the placement paths of carbon fibres. Three numerical cases including an open-hole single ply lamina under uniaxial tension and open-hole cross-ply laminate under biaxial tension and normal pressure are studied and compared with traditional reinforced composites with unidirectional fibres. The modelling results show that the stress concentration in both fibre and matrix are reduced significantly by the curved fibre placement and the stiffness of CFRP composites have been improved. This concept of performance-driven optimization method could lead to a useful tool for the design of future 3D printing process for fibre reinforced composites.

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“…Among others, they include layup and handling aids, positioning and fixation elements, structural curing aids and post-processing aids (Türk et al. 2017).…”

Section: Manufacturing Techniquementioning

confidence: 99%

Design and manufacture of hybrid metal composite structures using functional tooling made by additive manufacturing

et al. 2019

Self Cite

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This paper presents a novel manufacturing technique for complex-shaped, hybrid metal composite structures leveraging the design freedom of additive manufacturing (AM). The key novelty of this research is an approach for an autoclave-suitable and removable tooling, which consists of a 3D-printed functional shell and a structural filler material. In this process, a layup shell is produced with AM and filled with a temperature-resistant curing support to form a removable inner tooling. The functional shell has integrated design features for the positioning and the fixation of metallic interface elements and is removed after curing through integrated breaking lines. The feasibility of this manufacturing technique is demonstrated by fabricating a novel lightweight structure for the hydraulic quadruped (HyQ) robot. Selective laser sintering (SLS) was used to produce the functional shell tooling. Titanium interface elements made via selective laser melting (SLM) were assembled to the shell and co-cured to carbon fiber using an autoclave prepreg process. The resulting multi-material structure was tested in ultimate strength and successfully operated on the HyQ robot. Weight savings of 55% compared to a reference design and the mechanical viability of the multi-material structure indicate that the proposed manufacturing technique is appropriate for individualized hybrid composite structures with complex geometries.

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Composites Part Production with Additive Manufacturing Technologies

Cited by 48 publications

References 12 publications

Recent Advances in 3D Printing of Aliphatic Polyesters

Recent Advances in 3D Printing of Aliphatic Polyesters

Performance-driven 3D printing of continuous curved carbon fibre reinforced polymer composites: A preliminary numerical study

Design and manufacture of hybrid metal composite structures using functional tooling made by additive manufacturing

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