Globally continuous hybrid path for extrusion-based additive manufacturing

Xia, Lingwei; Ma, Guowei; Wang, Fang; Bai, Gang; Xie, Yi Min; Xu, Weiguo

doi:10.1016/j.autcon.2022.104175

Cited by 21 publications

(2 citation statements)

References 28 publications

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“…A well-planned toolpath can result in structurally sound and aesthetically pleasing printed structures, while inadequate planning can lead to issues like material sagging, poor bonding between layers, or excessive material use 15,135,136 . Therefore, understanding and optimizing the toolpath planning process is vital for successful and reliable 3DCP 137,138 . Furthermore, toolpath planning also provides opportunities for customization and innovation in construction 16,125 .…”

Section: Benefits and Challenges For Future Applicationsmentioning

confidence: 99%

A comprehensive review of sustainable materials and toolpath optimization in 3D concrete printing

Zhuang,

Xu,

et al. 2024

npj Mater. Sustain.

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The construction sector has experienced remarkable advancements in recent years, driven by the demand for sustainable and efficient building practices. Among these advancements, 3D concrete printing has emerged as a highly promising technology that holds the potential to revolutionize the construction industry. This review paper aims to provide a comprehensive analysis of the latest developments in three vital areas related to 3D concrete printing: sustainable materials, structural optimization, and toolpath design. A systematic literature review approach is employed based on established practices in additive manufacturing for construction to explore the intersections between these areas. The review reveals that material recycling plays a crucial role in achieving sustainable construction practices. Extensive research has been conducted on structural optimization methodologies to enhance the performance and efficiency of 3D printed concrete structures. In the printing process, toolpath design plays a significant role in ensuring the precise and efficient deposition of concrete. This paper discusses various toolpath generation strategies that take factors such as geometric complexity, printing constraints, and material flow control into account. In summary, the insights presented in this paper may serve as guidelines for researchers, engineers, and industry professionals towards sustainable and efficient construction practices using 3D concrete printing technology.

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Section: Benefits and Challenges For Future Applicationsmentioning

confidence: 99%

A comprehensive review of sustainable materials and toolpath optimization in 3D concrete printing

Zhuang,

Xu,

et al. 2024

npj Mater. Sustain.

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show abstract

“…Therefore, composite paths appear, which are algorithms that combine other strategies based on the characteristics of the slice layer. The contour method is usually chosen to fill the contour boundary region to ensure the geometric reduction in the boundary contour, and then the zigzag path is chosen to fill the solid part between the inner and outer contour to ensure the filling densities of the sliced layer, which is widely used in additive manufacturing technology [ 15 ].…”

Section: Introductionmentioning

confidence: 99%

Hybrid Path Generation Method for Multi-Axis Laser Metal Deposition of Overhanging Thin-Walled Structures

Liu,

Xing

2024

Micromachines

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Additive manufacturing has advantages over other traditional manufacturing technologies for the fabrication of complex thin-walled parts. Previous correlation path strategies, when applied to laser metal deposition processes, suffer from contour deposition transboundary and surface “scar” type overstacking. Therefore, this paper proposes a hybrid path generation method for the laser metal deposition process. First, the topological logic of the STL model of the part is restored to reduce redundant calculations at the stage of obtaining the layered contour. Then, the path points are planned on the basis of the offset contours in a helical upward trend to form a globally continuous composite path in space considering the melt channel width. Finally, vectors that adaptively fit to the model surface are generated for the path points as tool orientations and they are optimized by smoothing the rotation angles. The results of experiments conducted on a multi-axis machine equipped with a laser metal deposition module show that the path generated by the proposed method is not only capable of thin-walled structures with overhanging and curved surface features but also improves the surface imperfections of the part due to sudden changes in the angle of rotation while ensuring the boundary dimensions.

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A Non-retracted Path Generation Algorithm for Material Extrusion Type of Additive Manufacturing

Ozcan,

Hergul,

Yaman

2023

Lecture Notes in Mechanical Engineering

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Globally continuous hybrid path for extrusion-based additive manufacturing

Cited by 21 publications

References 28 publications

A comprehensive review of sustainable materials and toolpath optimization in 3D concrete printing

A comprehensive review of sustainable materials and toolpath optimization in 3D concrete printing

Hybrid Path Generation Method for Multi-Axis Laser Metal Deposition of Overhanging Thin-Walled Structures

A Non-retracted Path Generation Algorithm for Material Extrusion Type of Additive Manufacturing

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