Adaptive path planning for wire-feed additive manufacturing using medial axis transformation

Ding, Donghong; Pan, Zengxi; Cuiuri, Dominic; Li, Hui Jun; Larkin, Nathan

doi:10.1016/j.jclepro.2016.06.036

Cited by 125 publications

(49 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, to reproduce the original contour the smooth beads have to be clipped, thus producing many open paths. Ding et al [2016] also exploit a varying solidification width to eliminate gaps. The proposed approach is to generate the same number of beads in between the outer contour and an inner skeleton of the slice.…”

Section: Previous Workmentioning

confidence: 99%

“…A dense, smooth, and precise fill leads to stronger parts and increased manufacturing reliability [Kao and Prinz 1998]. To achieve this, we exploit the ability of many AM processes to vary the solidification radius dynamically along a deposition trajectory [Ding et al 2016;. However, bead width variations have to remain within minimum and maximum bounds for proper solidification.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Variable-width contouring for additive manufacturing

et al. 2020

View full text Add to dashboard Cite

In most layered additive manufacturing processes, a tool solidifies or deposits material while following pre-planned trajectories to form solid beads. Many interesting problems arise in this context, among which one concerns the planning of trajectories for filling a planar shape as densely as possible. This is the problem we tackle in the present paper. Recent works have shown that allowing the bead width to vary along the trajectories helps increase the filling density. We present a novel technique that, given a deposition width range, constructs a set of closed beads whose width varies within the prescribed range and fill the input shape. The technique outperforms the state of the art in important metrics: filling density (while still guaranteeing the absence of bead overlap) and trajectories smoothness. We give a detailed geometric description of our algorithm, explore its behavior on example inputs and provide a statistical comparison with the state of the art. We show that it is possible to obtain high quality fabricated layers on commodity FDM printers.

show abstract

Section: Previous Workmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Variable-width contouring for additive manufacturing

et al. 2020

View full text Add to dashboard Cite

show abstract

“…The literature has proposed various types of path patterns for AM technologies, including raster, zigzag, contour or spiral [16]. Although these patterns are suitable for powder-based technologies, they have limitations for wire-feed AM technologies, because in these technologies the deposition width is thicker.…”

Section: B Proposed Approaches In the Literaturementioning

confidence: 99%

“…A third major constraint is the amount of time required to fabricate parts [13]. To rectify the latter problem, researchers have proposed the application of better process planning algorithms [14]- [16]. In the process planning of CAM, the selection of an appropriate tool-path is critical [17], consequently, the tool-path generation problem is dominating research.…”

Section: Introductionmentioning

confidence: 99%

Tool-Path Problem in Direct Energy Deposition Metal-Additive Manufacturing: Sequence Strategy Generation

et al. 2020

View full text Add to dashboard Cite

The tool-path problem has been extensively studied in manufacturing technologies, as it has a considerable impact on production time. Additive manufacturing is one of these technologies; it takes time to fabricate parts, so the selection of optimal tool-paths is critical. This research analyzes the tool-path problem in the direct energy deposition technology; it introduces the main processes, and analyzes the characteristics of tool-path problem. It explains the approaches applied in the literature to solve the problem; as these are mainly geometric approximations, they are far from optimal. Based on this analysis, this paper introduces a mathematical framework for direct energy deposition and a novel problem called sequence strategy generation. Finally, it solves the problem using a benchmark for several different parts. The results reveal that the approach can be applied to parts with different characteristics, and the solution to the sequence strategy problem can be used to generate tool-paths. INDEX TERMS Additive manufacturing, direct energy deposition, multi-objective optimization, tool-path generation.

show abstract

“…Some commercial WAAM machines have been developed, as listed in Table 2. WAAM technology has attracted the attention of different research institutions around the world [34][35][36][37][38][39][40][41][42][43][44][45][46][47][48][49], as listed in Table 3. standard, AM processes include vat photo-polymerization (VP), binder jetting (BJ), material extrusion (ME), material jetting (MJ), sheet lamination (SL), powder bed fusion (PBF), and directed energy deposition (DED) [1].…”

Section: Introductionmentioning

confidence: 99%

Wire Arc Additive Manufacturing of Stainless Steels: A Review

et al. 2020

View full text Add to dashboard Cite

Wire arc additive manufacturing (WAAM) has been considered as a promising technology for the production of large metallic structures with high deposition rates and low cost. Stainless steels are widely applied due to good mechanical properties and excellent corrosion resistance. This paper reviews the current status of stainless steel WAAM, covering the microstructure, mechanical properties, and defects related to different stainless steels and process parameters. Residual stress and distortion of the WAAM manufactured components are discussed. Specific WAAM techniques, material compositions, process parameters, shielding gas composition, post heat treatments, microstructure, and defects can significantly influence the mechanical properties of WAAM stainless steels. To achieve high quality WAAM stainless steel parts, there is still a strong need to further study the underlying physical metallurgy mechanisms of the WAAM process and post heat treatments to optimize the WAAM and heat treatment parameters and thus control the microstructure. WAAM samples often show considerable anisotropy both in microstructure and mechanical properties. The new in-situ rolling + WAAM process is very effective in reducing the anisotropy, which also can reduce the residual stress and distortion. For future industrial applications, fatigue properties, and corrosion behaviors of WAAMed stainless steels need to be deeply studied in the future. Additionally, further efforts should be made to improve the WAAM process to achieve faster deposition rates and better-quality control.

show abstract

Adaptive path planning for wire-feed additive manufacturing using medial axis transformation

Cited by 125 publications

References 17 publications

Variable-width contouring for additive manufacturing

Variable-width contouring for additive manufacturing

Tool-Path Problem in Direct Energy Deposition Metal-Additive Manufacturing: Sequence Strategy Generation

Wire Arc Additive Manufacturing of Stainless Steels: A Review

Contact Info

Product

Resources

About