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Gradient and Discrete Region Composites Produced by Solid Free Form Fabrication Techniques

Published online by Cambridge University Press:  10 February 2011

R. S. Crockett  and
V. R. Gervasi
R. S. Crockett
Affiliation:
Rapid Prototyping Center, Milwaukee School of Engineering, Milwaukee, WI 53202
V. R. Gervasi
Affiliation:
Rapid Prototyping Center, Milwaukee School of Engineering, Milwaukee, WI 53202
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Abstract

Stereolithography patterns have been used to create composites with gradient properties. Patterns are produced with an open cellular or columnar structure inside a surface shell. This serves as a host for filler materials, generally epoxies or polyurethane matrices loaded with various fibers or microspheres. Regions within a single object may be separated by thin barriers, allowing filling with different matrix materials to create regions of differing local properties. The internal structure can also be continually gradated in dimension to produce composites with properties ranging from that of the filler material to that of the SFF material, currently epoxy or ABS plastic. This is a general set of processes that can be applied to a variety of existing Solid Freeform Fabrication systems.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 542: Symposium V – Solid Freeform and Additive Fabrication , 1998 , 25
Copyright
Copyright © Materials Research Society 1999

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