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Preliminary work toward the development of a dimensional tolerance standard for rapid prototypingRapid prototyping is a new technology for building parts quickly from CAD models. It works by slicing a CAD model into layers, then by building a model of the part one layer at a time. Since most parts can be sliced, most parts can be modeled using rapid prototyping. The layers themselves are created in a number of different ways - by using a laser to cure a layer of an epoxy or a resin, by depositing a layer of plastic or wax upon a surface, by using a laser to sinter a layer of powder, or by using a laser to cut a layer of paper. Rapid prototyping (RP) is new, and a standard part for use in comparing dimensional tolerances has not yet been chosen and accepted by ASTM (the American Society for Testing Materials). Such a part is needed when RP is used to build parts for investment casting or for direct use. The objective of this project was to start the development of a standard part by using statistical techniques to choose the features of the part which show curl - the vertical deviation of a part from its intended horizontal plane.
Document ID
19960025451
Acquisition Source
Marshall Space Flight Center
Document Type
Conference Paper
Authors
Kennedy, W. J.
(Clemson Univ. SC United States)
Date Acquired
September 6, 2013
Publication Date
February 1, 1996
Publication Information
Publication: Research Reports: 1995 NASA/ASEE Summer Faculty Fellowship Program
Subject Category
Computer Programming And Software
Accession Number
96N27488
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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