{"id":{"repo_id":"texas","oai_identifier":"oai:repositories.lib.utexas.edu:2152/46131"},"canonical_url":"https://search.dev.ndltd.org/etd/texas/oai:repositories.lib.utexas.edu:2152/46131","repository":{"repo_id":"texas","name":"University of Texas","base_url":"https://repositories.lib.utexas.edu/server/oai/request"},"display":{"title":"Modeling of a silicon/silicon carbide pressureless infiltration process","abstract":"During the experimental phase of this research, experimentalists discovered several small protrusions on the surface of silicon/silicon carbide metal matrix composites, which were created using a customized pressureless infiltration technique. These protrusions, called overfillings, differed in size and were spontaneously distributed on the surface of the infiltrated body. It was hypothesized that these overfillings were the result of the silicon’s large positive volume phase change. Through the use of several computer models, hypothesis of the previous experimental research was confirmed. It was ultimately determined that the overfillings are not the result of the shrinking silicon carbide skeleton, but are, instead, the result of the silicon’s phase change properties, which cause it to expand upon solidification. As the infiltrated body cools, the silicon changes from liquid to solid phase, expanding 10%. Because the silicon carbide skeleton is completely saturated with the liquid silicon, the liquid silicon is forced out of the composite as it solidifies, resulting in overfilling. Not only does this paper provide a detailed analysis of the computer modeling techniques used for the simulations and their correlating results, but this paper also explains the experimental research on which the computer models are founded.","abstract_html":"During the experimental phase of this research, experimentalists discovered several small protrusions on the surface of silicon/silicon carbide metal matrix composites, which were created using a customized pressureless infiltration technique. These protrusions, called overfillings, differed in size and were spontaneously distributed on the surface of the infiltrated body. It was hypothesized that these overfillings were the result of the silicon’s large positive volume phase change. Through the use of several computer models, hypothesis of the previous experimental research was confirmed. It was ultimately determined that the overfillings are not the result of the shrinking silicon carbide skeleton, but are, instead, the result of the silicon’s phase change properties, which cause it to expand upon solidification. As the infiltrated body cools, the silicon changes from liquid to solid phase, expanding 10%. Because the silicon carbide skeleton is completely saturated with the liquid silicon, the liquid silicon is forced out of the composite as it solidifies, resulting in overfilling. Not only does this paper provide a detailed analysis of the computer modeling techniques used for the simulations and their correlating results, but this paper also explains the experimental research on which the computer models are founded.","abstract_has_math":false,"creators":["Johnson, Gerard Adriel, 1983-"],"institution":"University of Texas at Austin","degree_name":"Master of Science","degree_level":"Masters","degree_discipline":"Mechanical Engineering","degree_department":null,"school":null,"contributors":[],"advisors":["Beaman, Joseph J."],"committee_chairs":[],"committee_members":[],"year":2007,"date_issued":"2007-05","date_published":"2007-05","updated_at":"2026-07-24T05:01:16Z","subjects":["Computer models","Silicon composites","Overfillings"],"languages":["eng"],"rights":["Copyright © is held by the author. Presentation of this material on the Libraries' web site by University Libraries, The University of Texas at Austin was made possible under a limited license grant from the author who has retained all copyrights in the works."],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier","label":"Identifier","values":["doi:10.15781/T2K931B8B"],"render_values":[{"text":"doi:10.15781/T2K931B8B","href":"https://doi.org/10.15781/T2K931B8B","code":true}]}]},"links":{"outbound_url":"http://hdl.handle.net/2152/46131","outbound_label":"Handle","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor.advisor","label":"Advisor","values":["Beaman, Joseph J."]},{"key":"dc:creator","label":"Author","values":["Johnson, Gerard Adriel, 1983-"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.accessioned","label":"Dc Date Accessioned","values":["2017-03-20T21:09:37Z"]},{"key":"dc:date.available","label":"Dc Date Available","values":["2017-03-20T21:09:37Z"]},{"key":"dc:date.issued","label":"Date","values":["2007-05"]},{"key":"dc:type","label":"Dc Type","values":["Thesis"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Mechanical Engineering"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Masters"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Master of Science"]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["University of Texas at Austin"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Computer models","Silicon composites","Overfillings"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language.iso","label":"Language (ISO)","values":["eng"]},{"key":"dc:rights","label":"Dc Rights","values":["Copyright © is held by the author. Presentation of this material on the Libraries' web site by University Libraries, The University of Texas at Austin was made possible under a limited license grant from the author who has retained all copyrights in the works."]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["doi:10.15781/T2K931B8B"]},{"key":"dc:identifier.uri","label":"Identifier URI","values":["http://hdl.handle.net/2152/46131"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["During the experimental phase of this research, experimentalists discovered several small protrusions on the surface of silicon/silicon carbide metal matrix composites, which were created using a customized pressureless infiltration technique. These protrusions, called overfillings, differed in size and were spontaneously distributed on the surface of the infiltrated body. It was hypothesized that these overfillings were the result of the silicon’s large positive volume phase change. Through the use of several computer models, hypothesis of the previous experimental research was confirmed. It was ultimately determined that the overfillings are not the result of the shrinking silicon carbide skeleton, but are, instead, the result of the silicon’s phase change properties, which cause it to expand upon solidification. As the infiltrated body cools, the silicon changes from liquid to solid phase, expanding 10%. Because the silicon carbide skeleton is completely saturated with the liquid silicon, the liquid silicon is forced out of the composite as it solidifies, resulting in overfilling. Not only does this paper provide a detailed analysis of the computer modeling techniques used for the simulations and their correlating results, but this paper also explains the experimental research on which the computer models are founded."]},{"key":"dc:format.medium","label":"Dc Format Medium","values":["electronic"]},{"key":"dc:title","label":"Title","values":["Modeling of a silicon/silicon carbide pressureless infiltration process"]}]}],"canonical_facts":{"dc:contributor.advisor":["Beaman, Joseph J."],"dc:creator":["Johnson, Gerard Adriel, 1983-"],"dc:date.accessioned":["2017-03-20T21:09:37Z"],"dc:date.available":["2017-03-20T21:09:37Z"],"dc:date.issued":["2007-05"],"dc:description.abstract":["During the experimental phase of this research, experimentalists discovered several small protrusions on the surface of silicon/silicon carbide metal matrix composites, which were created using a customized pressureless infiltration technique. These protrusions, called overfillings, differed in size and were spontaneously distributed on the surface of the infiltrated body. It was hypothesized that these overfillings were the result of the silicon’s large positive volume phase change. Through the use of several computer models, hypothesis of the previous experimental research was confirmed. It was ultimately determined that the overfillings are not the result of the shrinking silicon carbide skeleton, but are, instead, the result of the silicon’s phase change properties, which cause it to expand upon solidification. As the infiltrated body cools, the silicon changes from liquid to solid phase, expanding 10%. Because the silicon carbide skeleton is completely saturated with the liquid silicon, the liquid silicon is forced out of the composite as it solidifies, resulting in overfilling. Not only does this paper provide a detailed analysis of the computer modeling techniques used for the simulations and their correlating results, but this paper also explains the experimental research on which the computer models are founded."],"dc:format.medium":["electronic"],"dc:identifier":["doi:10.15781/T2K931B8B"],"dc:identifier.uri":["http://hdl.handle.net/2152/46131"],"dc:language.iso":["eng"],"dc:rights":["Copyright © is held by the author. Presentation of this material on the Libraries' web site by University Libraries, The University of Texas at Austin was made possible under a limited license grant from the author who has retained all copyrights in the works."],"dc:subject":["Computer models","Silicon composites","Overfillings"],"dc:title":["Modeling of a silicon/silicon carbide pressureless infiltration process"],"dc:type":["Thesis"],"thesis:degree_discipline":["Mechanical Engineering"],"thesis:degree_level":["Masters"],"thesis:degree_name":["Master of Science"],"thesis:institution_name":["University of Texas at Austin"]},"updated_at":"2026-07-24T05:01:16Z"}