Void elimination algorithm for extrusion-based layered manufacturing

Dan Qiu; Noshir A. Langrana

Void elimination algorithm for extrusion-based layered manufacturing

Research output: Contribution to conference › Paper › peer-review

Abstract

For extrusion based multi-material layered manufacturing (LM) processes, a CAD system has been developed which generates high quality toolpath for part fabrication. This closed loop CAD system includes solid model design & slicing, single-material toolpath generation, multi-material toolpath generation and virtual simulation modules. The solid model is sliced equally. Intelligent features and adaptive roadwidth optimum toolpath generation algorithm computes void sizes & their location and generates void free toolpath. The virtual simulation visualizes and validates the toolpath generated for the part. When the computed toolpath quality is acceptable, it is sent to the in house hardware Fused Deposition of Multiple Ceramics (FDMC) machine for fabrication.

Original language	English (US)
Pages	351-360
Number of pages	10
State	Published - 2001
Event	6th Design fro Manufacturing Conference - Pittsburgh, PA, United States Duration: Sep 9 2001 → Sep 12 2001

Other

Other	6th Design fro Manufacturing Conference
Country/Territory	United States
City	Pittsburgh, PA
Period	9/9/01 → 9/12/01

All Science Journal Classification (ASJC) codes

Modeling and Simulation
Mechanical Engineering
Computer Science Applications
Computer Graphics and Computer-Aided Design

Keywords

CAD
LM
Multi-material
Toolpath

Cite this

@conference{b34cc03e2769485e89206c846dc97cef,

title = "Void elimination algorithm for extrusion-based layered manufacturing",

abstract = "For extrusion based multi-material layered manufacturing (LM) processes, a CAD system has been developed which generates high quality toolpath for part fabrication. This closed loop CAD system includes solid model design & slicing, single-material toolpath generation, multi-material toolpath generation and virtual simulation modules. The solid model is sliced equally. Intelligent features and adaptive roadwidth optimum toolpath generation algorithm computes void sizes & their location and generates void free toolpath. The virtual simulation visualizes and validates the toolpath generated for the part. When the computed toolpath quality is acceptable, it is sent to the in house hardware Fused Deposition of Multiple Ceramics (FDMC) machine for fabrication.",

keywords = "CAD, LM, Multi-material, Toolpath",

author = "Dan Qiu and Langrana, {Noshir A.}",

note = "Funding Information: The extrusion-based L M uses nozzle head extruding semi-liquid material filament onto a flat surface or existing material layer to form the part. The extrusion-based process differs from the other approaches in that they require careful manipulations of the .STL file for overhang structures. Support structures are need in some cases, and the support material usually is different from the component material. This introduces the need of multi-material CAD and toolpath generation for extrusion-based LM. There are other needs of multi-material L M too. For surgical applications, there is a need for multi-color parts. Currently, at Rutgers University, under an Office of Navy Research (ONR) funded MURI program [1], fabrication of multiphase electromechanical parts is required. Funding Information: The authors would like to thank the Office of Naval Research (ONR) Drs. R. Wachters and K. Cooper for the financial support under #N00014-96-1-1175 Multidisciplinary Research Program of the Univ. Research Initiative (MURI). The authors also would like to thank professors S. Danforth, M. Jafari, A. Safari for their team support.; 6th Design fro Manufacturing Conference ; Conference date: 09-09-2001 Through 12-09-2001",

year = "2001",

language = "English (US)",

pages = "351--360",

}

TY - CONF

T1 - Void elimination algorithm for extrusion-based layered manufacturing

AU - Qiu, Dan

AU - Langrana, Noshir A.

N1 - Funding Information: The extrusion-based L M uses nozzle head extruding semi-liquid material filament onto a flat surface or existing material layer to form the part. The extrusion-based process differs from the other approaches in that they require careful manipulations of the .STL file for overhang structures. Support structures are need in some cases, and the support material usually is different from the component material. This introduces the need of multi-material CAD and toolpath generation for extrusion-based LM. There are other needs of multi-material L M too. For surgical applications, there is a need for multi-color parts. Currently, at Rutgers University, under an Office of Navy Research (ONR) funded MURI program [1], fabrication of multiphase electromechanical parts is required. Funding Information: The authors would like to thank the Office of Naval Research (ONR) Drs. R. Wachters and K. Cooper for the financial support under #N00014-96-1-1175 Multidisciplinary Research Program of the Univ. Research Initiative (MURI). The authors also would like to thank professors S. Danforth, M. Jafari, A. Safari for their team support.

PY - 2001

Y1 - 2001

N2 - For extrusion based multi-material layered manufacturing (LM) processes, a CAD system has been developed which generates high quality toolpath for part fabrication. This closed loop CAD system includes solid model design & slicing, single-material toolpath generation, multi-material toolpath generation and virtual simulation modules. The solid model is sliced equally. Intelligent features and adaptive roadwidth optimum toolpath generation algorithm computes void sizes & their location and generates void free toolpath. The virtual simulation visualizes and validates the toolpath generated for the part. When the computed toolpath quality is acceptable, it is sent to the in house hardware Fused Deposition of Multiple Ceramics (FDMC) machine for fabrication.

AB - For extrusion based multi-material layered manufacturing (LM) processes, a CAD system has been developed which generates high quality toolpath for part fabrication. This closed loop CAD system includes solid model design & slicing, single-material toolpath generation, multi-material toolpath generation and virtual simulation modules. The solid model is sliced equally. Intelligent features and adaptive roadwidth optimum toolpath generation algorithm computes void sizes & their location and generates void free toolpath. The virtual simulation visualizes and validates the toolpath generated for the part. When the computed toolpath quality is acceptable, it is sent to the in house hardware Fused Deposition of Multiple Ceramics (FDMC) machine for fabrication.

KW - CAD

KW - LM

KW - Multi-material

KW - Toolpath

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M3 - Paper

AN - SCOPUS:0035790649

SP - 351

EP - 360

T2 - 6th Design fro Manufacturing Conference

Y2 - 9 September 2001 through 12 September 2001

ER -

Void elimination algorithm for extrusion-based layered manufacturing

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All Science Journal Classification (ASJC) codes

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