Effect of in-plane voiding on the fracture behavior of laser sintered polyamide

dc.contributor.advisorBourell, David Leeen
dc.contributor.committeeMemberBeaman, Joseph J.en
dc.creatorLeigh, David Keithen
dc.date.accessioned2012-02-20T16:59:05Zen
dc.date.available2012-02-20T16:59:05Zen
dc.date.issued2011-12en
dc.date.submittedDecember 2011en
dc.date.updated2012-02-20T17:00:16Zen
dc.descriptiontexten
dc.description.abstractLaser Sintering, a method of additive manufacturing, is used in the production of concept models, functional prototypes, and end-use production parts. As the technology has transitioned from a product development tool to an accepted production technique, functional qualities have become increasingly important. Tension properties reported for popular polyamide sintering materials are comparable to the molded properties with the exception of elongation. Reported strains for laser sintered polyamide are in the 15-30% range with 200-400% strains reported for molding. (CES Edupack n.d.) The primary contributors to poor mechanical properties in polyamide materials used during Selective Laser Sintering® are studied. Methods to quantify decreased mechanical properties are compared against each other and against mechanical properties of components fabricated using multiple process parameters. Of primary interest are Ultimate Tensile Strength (UTS) and Elongation at Break (EOB) of tensile specimens fabricated under conditions that produce varying degrees of ductile and brittle fracture.en
dc.description.departmentMechanical Engineeringen
dc.format.mimetypeapplication/pdfen
dc.identifier.slug2152/ETD-UT-2011-12-4609en
dc.identifier.urihttp://hdl.handle.net/2152/ETD-UT-2011-12-4609en
dc.language.isoengen
dc.subjectLaser sinteringen
dc.subjectFractureen
dc.subjectAdditive manufacturingen
dc.subjectPolyamideen
dc.subjectSFFen
dc.subjectSolid freeform fabricationen
dc.titleEffect of in-plane voiding on the fracture behavior of laser sintered polyamideen
dc.type.genrethesisen
thesis.degree.departmentMechanical Engineeringen
thesis.degree.disciplineMechanical Engineeringen
thesis.degree.grantorUniversity of Texas at Austinen
thesis.degree.levelMastersen
thesis.degree.nameMaster of Science in Engineeringen

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