{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/87765"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/87765","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"A Numerical Study of Intergranular and Oxidation-Driven Fracture in an Elastic-Viscoplastic Material","abstract":"This study focuses on one mechanism that is believed to be important in the fatigue response of high-temperature superalloys: intergranular fracture driven by the infiltration and embrittlement of grain boundaries by oxygen. A novel space-time finite element model is developed to study this mechanism. The numerical model provides the basis for generic investigations of the kinetics of quasi-static crack growth along a brittle interface (such as an oxidized grain boundary) embedded in an elastic-viscoplastic material. Additional studies illuminate the complex interactions between stress-assisted grain-boundary diffusion, inelastic material response and grain-boundary cleavage.","abstract_html":"This study focuses on one mechanism that is believed to be important in the fatigue response of high-temperature superalloys: intergranular fracture driven by the infiltration and embrittlement of grain boundaries by oxygen. A novel space-time finite element model is developed to study this mechanism. The numerical model provides the basis for generic investigations of the kinetics of quasi-static crack growth along a brittle interface (such as an oxidized grain boundary) embedded in an elastic-viscoplastic material. Additional studies illuminate the complex interactions between stress-assisted grain-boundary diffusion, inelastic material response and grain-boundary cleavage.","abstract_has_math":false,"creators":["Carranza, Fernando L."],"institution":"University of Illinois at Urbana-Champaign","degree_name":"Ph.D.","degree_level":"Dissertation","degree_discipline":"Theoretical and Applied Mechanics","degree_department":null,"school":null,"contributors":["Haber, Robert B."],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2015,"date_issued":"2015-09-28T16:23:55Z","date_published":"2015-09-28T16:23:55Z","updated_at":"2026-07-22T22:26:30Z","subjects":["Engineering, Mechanical"],"languages":["eng"],"rights":[],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier","label":"Identifier","values":["(MiAaPQ)AAI9812547"],"render_values":[{"text":"(MiAaPQ)AAI9812547","href":null,"code":true}]}]},"links":{"outbound_url":"http://hdl.handle.net/2142/87765","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Haber, Robert B."]},{"key":"dc:creator","label":"Author","values":["Carranza, Fernando L."]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2015-09-28T16:23:55Z","10000-01-01","1997"]},{"key":"dc:type","label":"Dc Type","values":["text"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Theoretical and Applied Mechanics"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Dissertation"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Ph.D."]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["University of Illinois at Urbana-Champaign"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Engineering, Mechanical"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["eng"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["http://hdl.handle.net/2142/87765","(MiAaPQ)AAI9812547"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["This study focuses on one mechanism that is believed to be important in the fatigue response of high-temperature superalloys: intergranular fracture driven by the infiltration and embrittlement of grain boundaries by oxygen. A novel space-time finite element model is developed to study this mechanism. The numerical model provides the basis for generic investigations of the kinetics of quasi-static crack growth along a brittle interface (such as an oxidized grain boundary) embedded in an elastic-viscoplastic material. Additional studies illuminate the complex interactions between stress-assisted grain-boundary diffusion, inelastic material response and grain-boundary cleavage.","Made available in DSpace on 2015-09-28T16:23:55Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 9812547.pdf: 4961881 bytes, checksum: 92e9f67b5ca896ce07be3edba5d51b98 (MD5) Previous issue date: 1997","Embargo set by: Seth Robbins for item 89046 Lift date: Forever Reason: Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs","Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs","U of I Only","115 p.","Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 1997."]},{"key":"dc:title","label":"Title","values":["A Numerical Study of Intergranular and Oxidation-Driven Fracture in an Elastic-Viscoplastic Material"]}]}],"canonical_facts":{"dc:contributor":["Haber, Robert B."],"dc:creator":["Carranza, Fernando L."],"dc:date":["2015-09-28T16:23:55Z","10000-01-01","1997"],"dc:description":["This study focuses on one mechanism that is believed to be important in the fatigue response of high-temperature superalloys: intergranular fracture driven by the infiltration and embrittlement of grain boundaries by oxygen. A novel space-time finite element model is developed to study this mechanism. The numerical model provides the basis for generic investigations of the kinetics of quasi-static crack growth along a brittle interface (such as an oxidized grain boundary) embedded in an elastic-viscoplastic material. Additional studies illuminate the complex interactions between stress-assisted grain-boundary diffusion, inelastic material response and grain-boundary cleavage.","Made available in DSpace on 2015-09-28T16:23:55Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 9812547.pdf: 4961881 bytes, checksum: 92e9f67b5ca896ce07be3edba5d51b98 (MD5) Previous issue date: 1997","Embargo set by: Seth Robbins for item 89046 Lift date: Forever Reason: Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs","Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs","U of I Only","115 p.","Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 1997."],"dc:identifier":["http://hdl.handle.net/2142/87765","(MiAaPQ)AAI9812547"],"dc:language":["eng"],"dc:subject":["Engineering, Mechanical"],"dc:title":["A Numerical Study of Intergranular and Oxidation-Driven Fracture in an Elastic-Viscoplastic Material"],"dc:type":["text"],"thesis:degree_discipline":["Theoretical and Applied Mechanics"],"thesis:degree_level":["Dissertation"],"thesis:degree_name":["Ph.D."],"thesis:institution_name":["University of Illinois at Urbana-Champaign"]},"updated_at":"2026-07-22T22:26:30Z"}