Although the main advantage of 3D printing is that complex shapes can be produced through a simple process, very few studies have evaluated samples with complex shapes containing continuous fibers. Recently, 3D printers using continuous carbon fiber as a material have attracted considerable attention from researchers due to its high mechanical properties and the potential to reproduce complex shapes. It provides an interface based on Web-Services, achieving portability of data and functionalities.
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Finally, a software platform supporting the aforementioned activities has been implemented and is presented herein. These building blocks fulfil (mechanical and thermal) functional requirements as well as they meet buildability criteria, with emphasis on minimizing idle times. Also, following outcomes derived from the path strategy, an appropriate building block geometry is generated through design successive approximations. Steps are described in detail and include strategies for the selection of a near optimum path and selection of acceptable process parameters, along with controlling actions of a cable robot based concrete AM process head. The current study presents a modular framework for the holistic multi-level optimization of path planning for concrete AM. Path planning optimization of Concrete based AM is considered as a milestone, towards further automation and utilization of the technology. The review concludes with a brief discussion and an outlook on future work.Ĭoncrete based Additive Manufacturing (AM) is an emerging technological sector including numerous potential application fields, varying from buildings to facades and furniture. Also, novel applications enabled by design for CFRP-AM on shape morphing, sensing, and energy storage are presented. Design opportunities within the material, process, and structure domains are identified. More specifically, existing CFRP-AM techniques are reviewed from the perspective of functional requirements. This paper outlines the design concept for additive manufacturing of continuous fiber reinforced polymer composites, aiming to improve existing products' performance and foster product innovations for future needs. However, existing studies mostly focus on the manufacturing process without paying sufficient attention to exploring new design opportunities enabled by CFRP-AM. The development of additive manufacturing (AM) has revolutionized the fabrication process of continuous fiber reinforced polymer (CFRP) composites with its outstanding ability to create products that are complex in material, structure, and function. By analyzing the tensile strength on the specimens made by traditional in-plane anisotropy toolpath and the proposed in-plane isotropy toolpath, our results suggest that the mechanical strength can be reinforced by at least 20% using our proposed toolpath strategy in extrusion-based additive manufacturing. The in-plane isotropy can be achieved through continuous deposition while maintaining randomized distribution within a layer. In this paper, an in-plane isotropy toolpath pattern is generated to enhance the mechanical strength in the FFF process. Thus, this would create difficulties in improving the mechanical strength from the existing toolpath strategies due to the material in-plane anisotropy. The existing toolpaths, primarily used in the FFF process, are linear, zigzag, and contour toolpaths, which always accumulate long filaments and are unidirectional.
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This would cause the strength of the print components to vary based on the different process planning selections (building orientation, toolpath pattern). Therefore, the in-plane material cannot reach the isotropy character when performing the tensile test. However, the FFF process is inherently directional as the material is deposited in a layer-wise manner.
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The fused filament fabrication (FFF) process deposits thermoplastic material in a layer-by-layer manner, expanding the design space and manufacturing capability compared with traditional manufacturing.