A pneumatic conveying powder delivery system for continuously heterogeneous material deposition in solid freeform fabrication

Simple item page
dc.contributor.authorFitzgerald, Shawnen
dc.contributor.committeechairBohn, Jan Helgeen
dc.contributor.committeememberMyklebust, Arviden
dc.contributor.committeememberKander, Ronald C.en
dc.contributor.departmentMechanical Engineeringen
dc.date.accessioned2014-03-14T21:50:52Zen
dc.date.adate2008-12-02en
dc.date.available2014-03-14T21:50:52Zen
dc.date.issued1996-07-05en
dc.date.rdate2008-12-02en
dc.date.sdate2008-12-02en
dc.description.abstractGreat improvements are continuously being made in the solid free form fabrication (SFF) industry in terms of processes and materials. Fully functional parts are being created directly with little, if any, finishing. Parts are being directly fabricated with engineering materials such as ceramics and metals. This thesis aims to facilitate a substantial advance in rapid prototyping capabilities, namely that of fabricating parts with continuously heterogeneous material compositions. Because SFF is an additive building process, building parts layer-by-layer or even point-by-point, adjusting material composition throughout the entire part, in all three dimensions, is feasible. The use of fine powders as its build material provides the potential for the Selective Laser Sintering (SLS), ThreeDimensional Printing (3DP), and Freeform Powder Molding (FPM) processes to be altered to create continuously heterogeneous material composition. The current roller distribution system needs to be replaced with a new means of delivering the powder that facilitates selective heterogeneous material compositions. This thesis explores a dense phase pneumatic conveying system that has the potential to deliver the powder in a controlled manner and allow for adjustment of material composition throughout the layer.en
dc.description.degreeMaster of Scienceen
dc.format.extentxiii, 136 leavesen
dc.format.mediumBTDen
dc.format.mimetypeapplication/pdfen
dc.identifier.otheretd-12022008-063010en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-12022008-063010/en
dc.identifier.urihttp://hdl.handle.net/10919/46072en
dc.language.isoenen
dc.publisherVirginia Techen
dc.relation.haspartLD5655.V855_1996.F559.pdfen
dc.relation.isformatofOCLC# 35615420en
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectFreeform Powder Moldingen
dc.subjectrapid prototypingen
dc.subject3D Printingen
dc.subjectpowder depositionen
dc.subjectSelective Laser Sinteringen
dc.subject.lccLD5655.V855 1996.F559en
dc.titleA pneumatic conveying powder delivery system for continuously heterogeneous material deposition in solid freeform fabricationen
dc.typeThesisen
dc.type.dcmitypeTexten
thesis.degree.disciplineMechanical Engineeringen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.levelmastersen
thesis.degree.nameMaster of Scienceen

Files

Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
LD5655.V855_1996.F559.pdf
Size:
41.17 MB
Format:
Adobe Portable Document Format
Download

Collections

Masters Theses