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  4. A CAD-based Workflow and Mechanical Characterization for Additive Manufacturing of Tailored Lattice Structures
 
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2018
  • Konferenzbeitrag

Titel

A CAD-based Workflow and Mechanical Characterization for Additive Manufacturing of Tailored Lattice Structures

Alternative
CAD-basierter Workflow und mechanische Charakterisierung addititiv gefertigter, maßgeschneiderter Gitterstrukturen
Abstract
Lattice structures are highly recommended for lightweight applications and cost reduction in additive manufacturing (AM). Currently, parts with lattice structures are still mainly used for illustrative purposes and rarely in industrial products. One important reason is that, due to their high dependency on macro- and micro-geometry, the mechanical properties of manufactured structures are difficult to predict. Thus, even and precise struts are needed. In this paper, a workflow for fabrication of lattice structures with strut-diameters from 150 µm to 400 µm on commercial LBM systems is presented. Based on a CAD-integrated user-interface for lattice design, a customized slicing algorithm determines database-aided suitable exposure parameters which ensure that the properties of the manufactured struts will precisely be as specified upon design. Subsequently, compression tests are performed in order to verify the established workflow. The developed tool enables designers to integrate AM-specific geometries into their components without specific experience in AM.
Author(s)
Korn, Hannes
Fraunhofer-Institut für Werkzeugmaschinen und Umformtechnik IWU
Koch, Peter
Technische Universität Dresden
Kordaß, Richard
Fraunhofer-Institut für Werkzeugmaschinen und Umformtechnik IWU
Holzhausen, Stefan
Technische Universität Dresden
Schöne, Christine
Technische Universität Dresden
Müller, Bernhard
Fraunhofer-Institut für Werkzeugmaschinen und Umformtechnik IWU
Stelzer, Ralph
Technische Universität Dresden
Hauptwerk
Solid Freeform Fabrication 2018
Konferenz
Solid Freeform Fabrication Symposium (SFF) 2018
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Language
Englisch
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IWU
Tags
  • laser beam melting

  • lattice structure

  • lightweight design

  • material characteriza...

  • compression test

  • CAD

  • design

  • slicer

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