3D printing of bio-based polycarbonate and its potential applications in ecofriendly indoor manufacturing

Park, Seong Je; Lee, Ji Eun; Lee, Han Bit; Park, Jeanho; Lee, Nak-Kyu; Son, Yong; Park, Suk-Hee

doi:10.1016/j.addma.2019.100974

Cited by 56 publications

(38 citation statements)

References 29 publications

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“…Moreover, FDM is one of the most often-used AM technologies. Usually, polymer materials such as polylactic acid (PLA) [13,14], acrylonitrile butadiene styrene (ABS) [15], and polycarbonate (PC) [16] are used with this technology. Constantly increasing requirements for produced parts in every field of industry ask for better mechanical properties and lower mass of the parts.…”

Section: Introductionmentioning

confidence: 99%

Interlayer Adhesion Analysis of 3D-Printed Continuous Carbon Fibre-Reinforced Composites

Kuncius¹,

Rimašauskas²,

Rimašauskienė³

2021

Polymers

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Carbon fibre-reinforced materials are becoming more and more popular in various fields of industries because of their lightweight and perfect mechanical properties. Additive manufacturing technologies can be used for the production of complex parts from various materials including composites. Fused deposition modelling (FDM) is an excellent technology for the production of composite structures reinforced with short or continuous carbon fibre. In this study, modified FDM technology was used for the production of composites reinforced with continuous carbon fibre. The main aim of this study is to evaluate the shear strength of 3D-printed composite structures. The influence of printing layer height and line width on shear strength was analysed. Results showed that layer height has a significant influence on shear strength, while the influence of printing line width on shear strength is slightly smaller. Reduction of layer height from 0.4 mm to 0.3 mm allows increasing shear strength by about 40 percent. Moreover, the influence of the shear area and overlap length on shear force showed linear dependency, in which the shear area is increasing the shear force increasing proportionally. Finally, the results obtained can be used for the design and development of new 3D-printed composite structures.

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Section: Introductionmentioning

confidence: 99%

Interlayer Adhesion Analysis of 3D-Printed Continuous Carbon Fibre-Reinforced Composites

Kuncius¹,

Rimašauskas²,

Rimašauskienė³

2021

Polymers

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“…Properties of 3D-printed parts are dependent on both their material structure and printing process, and therefore require extensive testing of combinations of materials/process parameters to determine material capabilities for a given application [ 33 ]. For instance, a part’s mechanical response when fabricated with fused deposition modeling is alterable based on the printed layer thickness, processing temperature, and orientation [ 34 , 35 ]. In Table 1 a summary is provided that highlights the measured mechanical properties of some common polymer 3D-printed materials tested as solid samples; additional notes in the table provide context for how testing was carried out to provide ranges of process-dependent properties.…”

Section: Materials Capabilitiesmentioning

confidence: 99%

“…In Table 1 , multiple studies are reported for comparisons of ABS materials that all demonstrated similar, but slightly different mechanical properties [ 34 , 35 , 36 ], such as tensile strength ranging from 15 MPa to 38 MPa. These differences are accounted for in part because of the different processing temperatures and printing parameters used to construct parts, the slightly different proportions of monomers in ABS’s structure, and the tested part’s orientation.…”

Section: Materials Capabilitiesmentioning

confidence: 99%

Polymer 3D Printing Review: Materials, Process, and Design Strategies for Medical Applications

et al. 2021

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Polymer 3D printing is an emerging technology with recent research translating towards increased use in industry, particularly in medical fields. Polymer printing is advantageous because it enables printing low-cost functional parts with diverse properties and capabilities. Here, we provide a review of recent research advances for polymer 3D printing by investigating research related to materials, processes, and design strategies for medical applications. Research in materials has led to the development of polymers with advantageous characteristics for mechanics and biocompatibility, with tuning of mechanical properties achieved by altering printing process parameters. Suitable polymer printing processes include extrusion, resin, and powder 3D printing, which enable directed material deposition for the design of advantageous and customized architectures. Design strategies, such as hierarchical distribution of materials, enable balancing of conflicting properties, such as mechanical and biological needs for tissue scaffolds. Further medical applications reviewed include safety equipment, dental implants, and drug delivery systems, with findings suggesting a need for improved design methods to navigate the complex decision space enabled by 3D printing. Further research across these areas will lead to continued improvement of 3D-printed design performance that is essential for advancing frontiers across engineering and medicine.

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“…Compared with the traditional singleobjective topology optimization design, multiobjective optimization is more suitable for engineering practice since it considers both static and dynamic design objectives. e most widely used casting method for the optimized joint is additive manufacturing [30], which greatly reduces the time and labor cost through the layer-by-layer stacking of materials. e principle of the printing process is as follows:…”

Section: Comparison Of Mechanical Performancementioning

confidence: 99%

Multiobjective Topology Optimization of Spatial‐Structure Joints

Zhu

Liu

2021

Advances in Civil Engineering

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To realize the static and dynamic multiobjective topology optimization of joints in spatial structures, structural topology optimization is carried out to maximize the stiffness under static multiload conditions and maximize the first third-order dynamic natural frequencies. According to the single-objective optimization results, the objective function of the multiobjective topology optimization of joints is established by using the compromise programming method, and the weight coefficient of each static load condition is determined by using the analytic hierarchy process. Subsequently, under the constraint of the volume fraction, the multiobjective topology optimization of joints is realized by minimizing the multiobjective function. Finally, the optimized structure is smoothed to obtain a smoother joint, and its mechanical properties are compared with those of the hollow ball joint. The results indicate that the multiobjective topology optimization that considers the static stiffness and dynamic frequency can effectively improve the mechanical properties of the structure. Through the research on multiobjective topology optimization, a new type of spatial joint with reasonable stress, a novel form, and aesthetic shape can be obtained, which mitigates the shortcomings of single-objective topology optimization. In comparison to hollow spherical joints with the same weight, topology-optimized joints have a superior ability to resist deformation and improve low-order frequency, which verifies the feasibility of applying multiobjective topology optimization to the lightweight design of joints.

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3D printing of bio-based polycarbonate and its potential applications in ecofriendly indoor manufacturing

Cited by 56 publications

References 29 publications

Interlayer Adhesion Analysis of 3D-Printed Continuous Carbon Fibre-Reinforced Composites

Interlayer Adhesion Analysis of 3D-Printed Continuous Carbon Fibre-Reinforced Composites

Polymer 3D Printing Review: Materials, Process, and Design Strategies for Medical Applications

Multiobjective Topology Optimization of Spatial‐Structure Joints

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