{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/124440"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/124440","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Laser scan point cloud processing for displacement measurements of damaged steel I-girders","abstract":"Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2024-09-16 without embargo terms","abstract_html":"Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2024-09-16 without embargo terms","abstract_has_math":false,"creators":["Schissler, Lauren Regina"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"M.S.","degree_level":"Thesis","degree_discipline":"Civil Engineering","degree_department":null,"school":null,"contributors":["Elbanna, Ahmed E","Fahnestock, Larry A","LaFave, James M"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2024,"date_issued":"2024-05","date_published":"2024-05","updated_at":"2026-07-22T22:25:00Z","subjects":["Terrestrial Laser Scan","Point Cloud","Steel-girder Bridge","Over-height Vehicle","Impact Damage","Displacement Measurement"],"languages":["en","eng"],"rights":["Copyright 2024 Lauren Regina Schissler"],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"https://hdl.handle.net/2142/124440","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Elbanna, Ahmed E","Fahnestock, Larry A","LaFave, James M"]},{"key":"dc:creator","label":"Author","values":["Schissler, Lauren Regina"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2024-05","2024-04-30"]},{"key":"dc:type","label":"Dc Type","values":["text"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Civil Engineering"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Thesis"]},{"key":"thesis:degree_name","label":"Degree Name","values":["M.S."]},{"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":["Terrestrial Laser Scan","Point Cloud","Steel-girder Bridge","Over-height Vehicle","Impact Damage","Displacement Measurement"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["en","eng"]},{"key":"dc:rights","label":"Dc Rights","values":["Copyright 2024 Lauren Regina Schissler"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["https://hdl.handle.net/2142/124440"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2024-09-16 without embargo terms","The student, Lauren Schissler, accepted the attached license on 2024-04-30 at 11:41.","The student, Lauren Schissler, submitted this Thesis for approval on 2024-04-30 at 14:25.","This Thesis was approved for publication on 2024-04-30 at 15:56.","DSpace SAF Submission Ingestion Package generated from Vireo submission #20711 on 2024-09-16 at 00:37:32","Bridge strikes are events where a bridge superstructure is struck from beneath by an over-height vehicle, causing damage to the bridge. When a bridge strike event occurs, bridge owners must assess the damage and decide what, if any, action is required to maintain bridge functionality and safety. There is a growing body of literature exploring terrestrial laser scanning applications for bridge construction, operation, and maintenance. However, only one instance has been found where laser scanning was applied to investigate impact damage for steel I-girder bridges. A new procedure is presented for processing laser scan point cloud data of I-shaped steel bridge girders damaged by impact. The procedure extracts the bottom flange displacements over the length of the damaged girder span by combining existing point cloud processing techniques, including statistical outlier removal, voxelization, cross-sectional slicing, and RANSAC regression. Laser scan data from a damaged steel-girder highway bridge in Mt. Vernon, IL is used as a case study. The measurement procedure is designed to be implemented in real-world practice."]},{"key":"dc:format","label":"Dc Format","values":["application/pdf"]},{"key":"dc:title","label":"Title","values":["Laser scan point cloud processing for displacement measurements of damaged steel I-girders"]}]}],"canonical_facts":{"dc:contributor":["Elbanna, Ahmed E","Fahnestock, Larry A","LaFave, James M"],"dc:creator":["Schissler, Lauren Regina"],"dc:date":["2024-05","2024-04-30"],"dc:description":["Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2024-09-16 without embargo terms","The student, Lauren Schissler, accepted the attached license on 2024-04-30 at 11:41.","The student, Lauren Schissler, submitted this Thesis for approval on 2024-04-30 at 14:25.","This Thesis was approved for publication on 2024-04-30 at 15:56.","DSpace SAF Submission Ingestion Package generated from Vireo submission #20711 on 2024-09-16 at 00:37:32","Bridge strikes are events where a bridge superstructure is struck from beneath by an over-height vehicle, causing damage to the bridge. When a bridge strike event occurs, bridge owners must assess the damage and decide what, if any, action is required to maintain bridge functionality and safety. There is a growing body of literature exploring terrestrial laser scanning applications for bridge construction, operation, and maintenance. However, only one instance has been found where laser scanning was applied to investigate impact damage for steel I-girder bridges. A new procedure is presented for processing laser scan point cloud data of I-shaped steel bridge girders damaged by impact. The procedure extracts the bottom flange displacements over the length of the damaged girder span by combining existing point cloud processing techniques, including statistical outlier removal, voxelization, cross-sectional slicing, and RANSAC regression. Laser scan data from a damaged steel-girder highway bridge in Mt. Vernon, IL is used as a case study. The measurement procedure is designed to be implemented in real-world practice."],"dc:format":["application/pdf"],"dc:identifier":["https://hdl.handle.net/2142/124440"],"dc:language":["en","eng"],"dc:rights":["Copyright 2024 Lauren Regina Schissler"],"dc:subject":["Terrestrial Laser Scan","Point Cloud","Steel-girder Bridge","Over-height Vehicle","Impact Damage","Displacement Measurement"],"dc:title":["Laser scan point cloud processing for displacement measurements of damaged steel I-girders"],"dc:type":["text"],"thesis:degree_discipline":["Civil Engineering"],"thesis:degree_level":["Thesis"],"thesis:degree_name":["M.S."],"thesis:institution_name":["University of Illinois at Urbana-Champaign"]},"updated_at":"2026-07-22T22:25:00Z"}