Implicit slicing for functionally tailored additive manufacturing

Steuben, John C.; Iliopoulos, Athanasios; Michopoulos, John G.

doi:10.1016/j.cad.2016.04.003

Cited by 94 publications

(31 citation statements)

References 50 publications

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“…There are other contexts in additive manufacturing where isolines of equal spacing are desirable, for instance to generate fill patterns following optimized fields [Steuben et al 2016] or for curved 3D printing [Ezair et al 2018]. We believe our approach to be especially promising to decompose a 3D shape into solid slabs, before filling them with curved paths (using contouring and zigzag fill within the extracted curved slab [Chakraborty et al 2008]).…”

Section: Infill Patterns For 3d Printingmentioning

confidence: 99%

Procedural band patterns

Etienne¹,

Lefèbvre

2020

Symposium on Interactive 3D Graphics and Games

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Figure 1: Our technique generates band patterns following a parametric field, while adapting the density of bands per unit. Each band is uniquely identified (left) which affords for robust extraction of border trajectories and center lines (middle). The method is procedural which allows a wide range of dynamic shader effects, such as textile patterns that adapts to stretch (right). Contrary to classical subdivision approaches, our approach introduces new bands with a non power of two factor, allowing a more progressive gradation. ABSTRACTWe seek to cover a parametric domain with a set of evenly spaced bands which number and width varies according to a density field. We propose an implicit procedural algorithm, that generates the band pattern from a pixel shader and adapts to changes to the control fields in real time. Each band is uniquely identified by an integer. This allows a wide range of texturing effects, including specifying a different appearance in each individual bands. Our technique also affords for progressive gradations of scales, avoiding the abrupt doubling of the number of lines of typical subdivision approaches. This leads to a general approach for drawing bands, drawing splitting and merging curves, and drawing evenly spaced streamlines. Using these base ingredients, we demonstrate a wide variety of texturing effects.

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Section: Infill Patterns For 3d Printingmentioning

confidence: 99%

Procedural band patterns

Etienne¹,

Lefèbvre

2020

Symposium on Interactive 3D Graphics and Games

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“…[ 87 ] FEA methods have been widely used to optimize the distribution of graded cellular lattice structures and enhance the strength‐to‐weight ratio of FGSs. [ 45,48,88–90 ] Geometrical complexity of predesigned 3D objects results in a computationally cumbersome discretization procedure at the mesh definition stage in FEA. Parthasarathy et al [ 88 ] incorporated a RVE method into FEA for simulation of the stiffness of FGSs with greatly improved computational efficiency.…”

Section: Design Concepts For Fgmammentioning

confidence: 99%

A Review on Functionally Graded Materials and Structures via Additive Manufacturing: From Multi‐Scale Design to Versatile Functional Properties

Yan

Feng

Liu

et al. 2020

Adv Materials Technologies

297

116

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Functionally graded materials (FGMs) and functionally graded structures (FGSs) are special types of advanced composites with peculiar features and advantages. This article reviews the design criteria of functionally graded additive manufacturing (FGAM), which is capable of fabricating gradient components with versatile functional properties. Conventional geometrical‐based design concepts have limited potential for FGAM and multi‐scale design concepts (from geometrical patterning to microstructural design) are needed to develop gradient components with specific graded properties at different locations. FGMs and FGSs are of great interest to a larger range of industrial sectors and applications including aerospace, automotive, biomedical implants, optoelectronic devices, energy absorbing structures, geological models, and heat exchangers. This review presents an overview of various fabrication ideas and suggestions for future research in terms of design and creation of FGMs and FGSs, benefiting a wide variety of scientific fields.

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“…Researchers have started to consider the influence of toolpaths on the mechanical strength of 3D printed models. An implicit function based toolpath generation algorithm for 3D printing has been developed in [Steuben et al 2016]. Their toolpaths are governed by stress-fields on 2D slices for fabrication.…”

Section: Toolpath Generationmentioning

confidence: 99%

Reinforced FDM

et al. 2020

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The anisotropy of mechanical strength on a 3D printed model can be controlled in a multi-axis 3D printing system as materials can be accumulated along dynamically varied directions. In this paper, we present a new computational framework to generate specially designed layers and toolpaths of multi-axis 3D printing for strengthening a model by aligning filaments along the directions with large stresses. The major challenge comes from how to effectively decompose a solid into a sequence of strength-aware and collision-free working surfaces. We formulate it as a problem to compute an optimized governing field together with a selected orientation of fabrication setup. Iso-surfaces of the governing field are extracted as working surface layers for filament alignment. Supporting structures in curved layers are constructed by extrapolating the governing field to enable the fabrication of overhangs. Compared with planar-layer based Fused Deposition Modeling (FDM) technology, models fabricated by our method can withstand up to 6 . 35× loads in experimental tests.

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Implicit slicing for functionally tailored additive manufacturing

Cited by 94 publications

References 50 publications

Procedural band patterns

Procedural band patterns

A Review on Functionally Graded Materials and Structures via Additive Manufacturing: From Multi‐Scale Design to Versatile Functional Properties

Reinforced FDM

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