Journal article
Direct slicing of STEP based NURBS models for layered manufacturing
Computer aided design, v 37(4), pp 387-397
01 Apr 2005
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Direct slicing of CAD models to generate process planning instructions for solid freeform fabrication may overcome inherent disadvantages of using stereolithography format in terms of the process accuracy, ease of file management, and incorporation of multiple materials. This paper will present the results of our development of a direct slicing algorithm for layered freeform fabrication. The direct slicing algorithm was based on a neutral, international standard (ISO 10303) STEP-formatted non-uniform rational B-spline (NURBS) geometric representation and is intended to be independent of any commercial CAD software. The following aspects of the development effort will be presented: (1) determination of optimal build direction based upon STEP-based NURBS models; (2) adaptive subdivision of NURBS data for geometric refinement; and (3) ray-casting slice generation into sets of raster patterns. The development also provides for multi-material slicing and will provide an effective tool in heterogeneous slicing processes.
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Details
- Title
- Direct slicing of STEP based NURBS models for layered manufacturing
- Creators
- B. Starly - Department of Mechanical Engineering and Mechanics, Drexel University, Philadelphia, PA 19104, USAA. Lau - Department of Mechanical Engineering and Mechanics, Drexel University, Philadelphia, PA 19104, USAW. Sun - Drexel University, Mechanical Engineering and MechanicsW. Lau - Therics, Inc., 115 Campus Drive, Princeton, NJ 08540, USAT. Bradbury - Therics, Inc., 115 Campus Drive, Princeton, NJ 08540, USA
- Publication Details
- Computer aided design, v 37(4), pp 387-397
- Publisher
- Elsevier
- Number of pages
- 11
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Mechanical Engineering and Mechanics
- Web of Science ID
- WOS:000226395500003
- Scopus ID
- 2-s2.0-10644249009
- Other Identifier
- 991019168550504721
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- Web of Science research areas
- Computer Science, Software Engineering