{"id":{"repo_id":"vt","oai_identifier":"oai:vtechworks.lib.vt.edu:10919/9738"},"canonical_url":"https://search.dev.ndltd.org/etd/vt/oai:vtechworks.lib.vt.edu:10919/9738","repository":{"repo_id":"vt","name":"Virginia Tech","base_url":"https://vtechworks.lib.vt.edu/oai/request"},"display":{"title":"Buried Pipe Life Prediction in Sewage Type Environments","abstract":"In this study, we develop a method of life prediction of buried pipe using the concepts of a characteristic damage state and damage accumulation. A stress analysis corresponding to the different types of load during service with environmental effects, a moisture diffusion model, and a lifetime prediction analysis combining the above models has been constructed. The model uses an elasticity solution for axial-symmetric loading in the case of pressurized pipe, and an approximate non-linear solution for transverse loading due to soil pressure in the case of buried pipe. The axial-symmetric stress analysis has been constructed taking into account the moisture content and the temperature of each ply of the laminate. The moisture diffusion model takes into account the geometry of the laminate, the different diffusivity coefficients in each ply, and also the geometric changes due to ply failure. The failure mode and material behavior of the pipe has been investigated and identified according to Owens Corning data. Thus, the code that has been developed allows one to predict the time to failure of Owens Corning industrial pipes under any time-dependent profile of environmental and loading conditions.","abstract_html":"In this study, we develop a method of life prediction of buried pipe using the concepts of a characteristic damage state and damage accumulation. A stress analysis corresponding to the different types of load during service with environmental effects, a moisture diffusion model, and a lifetime prediction analysis combining the above models has been constructed. The model uses an elasticity solution for axial-symmetric loading in the case of pressurized pipe, and an approximate non-linear solution for transverse loading due to soil pressure in the case of buried pipe. The axial-symmetric stress analysis has been constructed taking into account the moisture content and the temperature of each ply of the laminate. The moisture diffusion model takes into account the geometry of the laminate, the different diffusivity coefficients in each ply, and also the geometric changes due to ply failure. The failure mode and material behavior of the pipe has been investigated and identified according to Owens Corning data. Thus, the code that has been developed allows one to predict the time to failure of Owens Corning industrial pipes under any time-dependent profile of environmental and loading conditions.","abstract_has_math":false,"creators":["Bodin, Jean-Matthieu Marie Jacques Sebastien"],"institution":"Virginia Tech","degree_name":"Master of Science","degree_level":"masters","degree_discipline":"Engineering Mechanics","degree_department":"Engineering Mechanics","school":null,"contributors":[],"advisors":[],"committee_chairs":["Case, Scott W."],"committee_members":["Hyer, Michael W.","Reifsnider, Kenneth L."],"year":1999,"date_issued":"1999-02-06","date_published":"1999-02-06","updated_at":"2026-07-22T22:18:58Z","subjects":["Composite Pipe","Damage Accumulation","Life Prediction"],"languages":[],"rights":["In Copyright"],"rights_urls":["http://rightsstatements.org/vocab/InC/1.0/"],"identifier_entries":[{"key":"dc:identifier.other","label":"Dc Identifier Other","values":["etd-72198-94656"],"render_values":[{"text":"etd-72198-94656","href":null,"code":true}]}]},"links":{"outbound_url":"http://hdl.handle.net/10919/9738","outbound_label":"Handle","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor.committeechair","label":"Committee Chair","values":["Case, Scott W."]},{"key":"dc:contributor.committeemember","label":"Committee Member","values":["Hyer, Michael W.","Reifsnider, Kenneth L."]},{"key":"dc:contributor.department","label":"Department","values":["Engineering Mechanics"]},{"key":"dc:creator","label":"Author","values":["Bodin, Jean-Matthieu Marie Jacques Sebastien"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.accessioned","label":"Dc Date Accessioned","values":["2011-08-06T14:47:03Z"]},{"key":"dc:date.available","label":"Dc Date Available","values":["2011-08-06T14:47:03Z","1999-08-21"]},{"key":"dc:date.issued","label":"Date","values":["1999-02-06"]},{"key":"dc:publisher","label":"Institution","values":["Virginia Tech"]},{"key":"dc:type","label":"Dc Type","values":["Thesis"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Engineering Mechanics"]},{"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":["Virginia Polytechnic Institute and State University"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Composite Pipe","Damage Accumulation","Life Prediction"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:rights","label":"Dc Rights","values":["In Copyright"]},{"key":"dc:rights.uri","label":"Rights URI","values":["http://rightsstatements.org/vocab/InC/1.0/"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier.other","label":"Dc Identifier Other","values":["etd-72198-94656"]},{"key":"dc:identifier.uri","label":"Identifier URI","values":["http://hdl.handle.net/10919/9738"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["In this study, we develop a method of life prediction of buried pipe using the concepts of a characteristic damage state and damage accumulation. A stress analysis corresponding to the different types of load during service with environmental effects, a moisture diffusion model, and a lifetime prediction analysis combining the above models has been constructed. The model uses an elasticity solution for axial-symmetric loading in the case of pressurized pipe, and an approximate non-linear solution for transverse loading due to soil pressure in the case of buried pipe. The axial-symmetric stress analysis has been constructed taking into account the moisture content and the temperature of each ply of the laminate. The moisture diffusion model takes into account the geometry of the laminate, the different diffusivity coefficients in each ply, and also the geometric changes due to ply failure. The failure mode and material behavior of the pipe has been investigated and identified according to Owens Corning data. Thus, the code that has been developed allows one to predict the time to failure of Owens Corning industrial pipes under any time-dependent profile of environmental and loading conditions."]},{"key":"dc:description.degree","label":"Dc Description Degree","values":["Master of Science"]},{"key":"dc:format.medium","label":"Dc Format Medium","values":["ETD"]},{"key":"dc:title","label":"Title","values":["Buried Pipe Life Prediction in Sewage Type Environments"]}]}],"canonical_facts":{"dc:contributor.committeechair":["Case, Scott W."],"dc:contributor.committeemember":["Hyer, Michael W.","Reifsnider, Kenneth L."],"dc:contributor.department":["Engineering Mechanics"],"dc:creator":["Bodin, Jean-Matthieu Marie Jacques Sebastien"],"dc:date.accessioned":["2011-08-06T14:47:03Z"],"dc:date.available":["2011-08-06T14:47:03Z","1999-08-21"],"dc:date.issued":["1999-02-06"],"dc:description.abstract":["In this study, we develop a method of life prediction of buried pipe using the concepts of a characteristic damage state and damage accumulation. A stress analysis corresponding to the different types of load during service with environmental effects, a moisture diffusion model, and a lifetime prediction analysis combining the above models has been constructed. The model uses an elasticity solution for axial-symmetric loading in the case of pressurized pipe, and an approximate non-linear solution for transverse loading due to soil pressure in the case of buried pipe. The axial-symmetric stress analysis has been constructed taking into account the moisture content and the temperature of each ply of the laminate. The moisture diffusion model takes into account the geometry of the laminate, the different diffusivity coefficients in each ply, and also the geometric changes due to ply failure. The failure mode and material behavior of the pipe has been investigated and identified according to Owens Corning data. 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