Path planning and control of functionally graded materials for rapid tooling

2006 ◽  
Author(s):  
Ren C. Luo ◽  
Yen Lin Pan ◽  
Chen Jun Wang ◽  
Zhong Hong Huang
Keyword(s):  
Path Planning ◽  
Functionally Graded Materials ◽  
Rapid Tooling ◽  
Functionally Graded ◽  
Graded Materials ◽  
Planning And Control ◽  
And Control

Toolpaths for additive manufacturing of functionally graded materials (FGM) parts

2014 ◽  
Vol 20 (6) ◽  
pp. 511-522 ◽  
Author(s):  
Pierre Muller ◽  
Jean-Yves Hascoet ◽  
Pascal Mognol
Keyword(s):  
Additive Manufacturing ◽  
Path Planning ◽  
Functionally Graded Materials ◽  
Process Modeling ◽  
Functionally Graded ◽  
System Control ◽  
Graded Materials ◽  
Content Type ◽  
Manufacturing Procedure ◽  
Selection Of

Purpose – The purpose of this paper is to propose an evaluation of toolpaths for additive manufacturing of functionally graded materials (FGM) parts to ensure the manufacturing of parts in compliance with the desired material distribution. The selection of an appropriate path strategy is critical when manufacturing FGM parts. Design/methodology/approach – The selection of a path strategy is based on a process modeling and an additive laser melting (ALM) system control. To do that, some path strategies are selected, simulated and compared. Findings – The comparison of some paths strategies was applied on a study case from the biomedical field. Test-parts were manufactured and analyzed. Results show a good correlation between the simulated and the deposited material distributions. The evaluation of toolpaths based on the process modeling and the system control was validated. Originality/value – Nowadays, FGM parts manufactured with ALM processes are not functional. To move from these samples to functional parts, it is necessary to have a global approach of the manufacturing procedure centered on the path planning. Few methodologies of path planning are adapted to FGM parts but are still limited.

Design of a New Parametric Path Plan for Additive Manufacturing of Hollow Porous Structures With Functionally Graded Materials

2014 ◽  
Vol 14 (4) ◽  
Author(s):  
Ibrahim T. Ozbolat ◽  
A. K. M. B. Khoda
Keyword(s):  
Additive Manufacturing ◽  
Path Planning ◽  
Functionally Graded Materials ◽  
Three Dimensional ◽  
Functionally Graded ◽  
Relaxation Techniques ◽  
Layer By Layer ◽  
Porous Structures ◽  
Graded Materials ◽  
Voronoi Regions

In this paper, a novel path planning approach is proposed to generate porous structures with internal features. The interconnected and continuous deposition path is designed to control the internal material composition in a functionally graded manner. The proposed layer-based algorithmic solutions generate a bilayer pattern of zigzag and spiral toolpath consecutively to construct heterogeneous three-dimensional (3D) objects. The proposed strategy relies on constructing Voronoi diagrams for all bounding curves in each layer to decompose the geometric domain and discretizing the associated Voronoi regions with ruling lines between the boundaries of the associated Voronoi regions. To avoid interference among ruling lines, reorientation and relaxation techniques are introduced to establish matching for continuous zigzag path planning. In addition, arc fitting is used to reduce over-deposition, allowing nonstop deposition at sharp turns. Layer-by-layer deposition progresses through consecutive layers of a ruling-line-based zigzag pattern followed by a spiral path deposition. A biarc fitting technique is employed through isovalues of ruling lines to generate G1 continuity along the spiral deposition path plan. Functionally graded material properties are then mapped based on a parametric distance-based weighting technique. The proposed approach enables elimination or minimization of over-deposition of materials, nonuniformity on printed strands and discontinuities on the toolpath, which are shortcomings of traditional zigzag-based toolpath plan in additive manufacturing (AM). In addition, it provides a practical path for printing functionally graded materials.

Path Planning for Functionally Graded Materials in Hollow Tissue Scaffold Printing

2011 ◽  
Author(s):  
Ibrahim T. Ozbolat
Keyword(s):  
Path Planning ◽  
Functionally Graded Materials ◽  
Functionally Graded ◽  
Layer By Layer ◽  
Graded Materials ◽  
Tissue Scaffold ◽  
Material Deposition ◽  
Zigzag Pattern ◽  
Graded Material ◽  
Planning Methodology

This study proposes a new path planning methodology to control functionally graded materials in hollowed scaffold printing for tissue engineering. Based on ruled surface construction from our earlier work [1], ruling lines are postprocessed for continuous path planning with uniform material deposition. Besides, arc fitting is used to reduce over-deposition by enabling non-stop deposition at the sharp turns. Layer-by-layer deposition is progressed through consecutive layers of ruling line based zigzag pattern followed by a biarc fitted spiral pattern. Functionally graded material properties are then mapped based on parametric distances from hollow features.

scholarly journals Experimental validation of Scheil–Gulliver simulations for gradient path planning in additively manufactured functionally graded materials

Materialia ◽  
2020 ◽  
Vol 11 ◽  
pp. 100689 ◽  
Author(s):  
Brandon Bocklund ◽  
Lourdes D. Bobbio ◽  
Richard A. Otis ◽  
Allison M. Beese ◽  
Zi-Kui Liu
Keyword(s):  
Path Planning ◽  
Functionally Graded Materials ◽  
Experimental Validation ◽  
Functionally Graded ◽  
Graded Materials

scholarly journals Functionally Graded Materials through robotics-inspired path planning

2019 ◽  
Vol 182 ◽  
pp. 107975 ◽  
Author(s):  
O.V. Eliseeva ◽  
T. Kirk ◽  
P. Samimi ◽  
R. Malak ◽  
R. Arróyave ◽  
...  
Keyword(s):  
Path Planning ◽  
Functionally Graded Materials ◽  
Functionally Graded ◽  
Graded Materials

Dynamic Analysis with Stress Recovery for Functionally Graded Materials: Numerical Simulation and Experimental Benchmarking

2014 ◽  
Vol 2 (1) ◽  
pp. 21
Author(s):  
Carlos Alberto Dutra Fraga Filho ◽  
Fernando César Meira Menandro ◽  
Rivânia Hermógenes Paulino de Romero ◽  
Juan Sérgio Romero Saenz
Keyword(s):  
Numerical Simulation ◽  
Dynamic Analysis ◽  
Functionally Graded Materials ◽  
Functionally Graded ◽  
Stress Recovery ◽  
Graded Materials
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