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Layered Manufacturing: Challenges and Opportunities

Published online by Cambridge University Press:  11 February 2011

Khershed P. Cooper
Khershed P. Cooper*
Affiliation:
Materials Science and Technology Division, Naval Research Laboratory, Washington, DC 20375–5343, U.S.A.
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Abstract

Layered Manufacturing (LM) refers to computer-aided manufacturing processes in which parts are made in sequential layers relatively quickly. Parts that are produced by LM can be formed from a wide range of materials such as photosensitive polymers, metals and ceramics in sizes from a centimeter to a few meters with sub-millimeter feature resolutions. LM has found use in diverse areas including biomedical engineering, pharmaceuticals, aerospace, defense, electronics and design engineering. The promise of LM is the capability to make customized complex-shaped functional parts without specialized tooling and without assembly. LM is still a few years away from fully realizing its promise but its potential for manufacturing remains high. A few of the fundamental challenges in materials processing confronting the community are improving the quality of the surface finish, eliminating residual stress, controlling local composition and microstructure, achieving fine feature size and dimensional tolerance and accelerating processing speed. Until these challenges are met, the applicability of LM and its commercialization will be restricted. Sustained scientific activity in LM has advanced over the past decade into many different areas of manufacturing and has enabled exploration of novel processes and development of hybrid processes. The research community of today has the opportunity to shape the future direction of science research to realize the full potential of LM.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 758: Symposium LL – Rapid Prototyping Technologies , 2002 , LL1.4
Copyright
Copyright © Materials Research Society 2003

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