{"id":"https://openalex.org/W2286796648","doi":null,"title":"A Theoretical Structural Impairment Detection System for Timber Railway Bridges","display_name":"A Theoretical Structural Impairment Detection System for Timber Railway Bridges","publication_year":2012,"publication_date":"2012-07-16","ids":{"openalex":"https://openalex.org/W2286796648","mag":"2286796648"},"language":"en","primary_location":{"id":"pmh:oai:oaktrust.library.tamu.edu:1969.1/ETD-TAMU-2012-05-10919","doi":null,"is_oa":false,"landing_page_url":"https://hdl.handle.net/1969.1/ETD-TAMU-2012-05-10919","pdf_url":null,"source":{"id":"https://openalex.org/S4306400291","display_name":"OakTrust (Texas A&M University Libraries)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I91045830","host_organization_name":"Texas A&M University","host_organization_lineage":["https://openalex.org/I91045830"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"","raw_type":"Thesis"},"volume":null,"type":"dissertation","is_traditional":true,"indexed_in":[],"open_access":{"is_oa":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5074705204","display_name":"John Orsak","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":true,"raw_author_name":"John Orsak","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]}],"institutions":[],"countries_distinct_count":0,"institutions_distinct_count":0,"corresponding_author_ids":["https://openalex.org/A5074705204"],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":null,"has_fulltext":false,"cited_by_count":2,"citation_normalized_percentile":null,"cited_by_percentile_year":null,"biblio":{"volume":null,"issue":null,"first_page":null,"last_page":null},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10534","display_name":"Structural Health Monitoring Techniques","score":0.7602999806404114,"subfield":{"id":"https://openalex.org/subfields/2205","display_name":"Civil and Structural Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T10534","display_name":"Structural Health Monitoring Techniques","score":0.7602999806404114,"subfield":{"id":"https://openalex.org/subfields/2205","display_name":"Civil and Structural Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10842","display_name":"Railway Engineering and Dynamics","score":0.2232999950647354,"subfield":{"id":"https://openalex.org/subfields/2210","display_name":"Mechanical Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T12940","display_name":"Structural Engineering and Materials Analysis","score":0.010900000110268593,"subfield":{"id":"https://openalex.org/subfields/2205","display_name":"Civil and Structural Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/shear-cracks","display_name":"shear cracks","score":0.878000020980835},{"id":"https://openalex.org/keywords/fatigue-material","display_name":"fatigue (material)","score":0.593999981880188},{"id":"https://openalex.org/keywords/freight-wagons","display_name":"freight cars","score":0.4959999918937683},{"id":"https://openalex.org/keywords/neural-network","display_name":"artificial neural networks","score":0.7009999752044678},{"id":"https://openalex.org/keywords/finite-element-model","display_name":"finite element model","score":0.6110000014305115},{"id":"https://openalex.org/keywords/train-speed","display_name":"train speed","score":0.7089999914169312},{"id":"https://openalex.org/keywords/bridge-condition-assessment","display_name":"bridge condition assessment","score":0.7210000157356262}],"concepts":[{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.42859119176864624},{"id":"https://openalex.org/C77595967","wikidata":"https://www.wikidata.org/wiki/Q3151013","display_name":"Forensic engineering","level":1,"score":0.35951656103134155},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.2887721657752991}],"mesh":[],"locations_count":2,"locations":[{"id":"pmh:oai:oaktrust.library.tamu.edu:1969.1/ETD-TAMU-2012-05-10919","doi":null,"is_oa":false,"landing_page_url":"https://hdl.handle.net/1969.1/ETD-TAMU-2012-05-10919","pdf_url":null,"source":{"id":"https://openalex.org/S4306400291","display_name":"OakTrust (Texas A&M University Libraries)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I91045830","host_organization_name":"Texas A&M University","host_organization_lineage":["https://openalex.org/I91045830"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"","raw_type":"Thesis"},{"id":"mag:2286796648","doi":null,"is_oa":false,"landing_page_url":"http://oaktrust.library.tamu.edu/bitstream/1969.1/ETD-TAMU-2012-05-10919/2/ORSAK-THESIS.pdf","pdf_url":null,"source":null,"license":null,"license_id":null,"version":null,"is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":null}],"best_oa_location":null,"sustainable_development_goals":[{"display_name":"Industry, innovation and infrastructure","id":"https://metadata.un.org/sdg/9","score":1.0}],"study_designs":[],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":9,"referenced_works":["https://openalex.org/W1825077972","https://openalex.org/W1976833466","https://openalex.org/W1990500198","https://openalex.org/W2040870580","https://openalex.org/W2069011471","https://openalex.org/W2088588220","https://openalex.org/W2092228166","https://openalex.org/W2327148211","https://openalex.org/W2886487073"],"related_works":["https://openalex.org/W3087734986","https://openalex.org/W2523542382","https://openalex.org/W6997276950","https://openalex.org/W3015706234","https://openalex.org/W3087293098","https://openalex.org/W2775225994","https://openalex.org/W3087596415","https://openalex.org/W3000145388","https://openalex.org/W1811289677","https://openalex.org/W7033976814"],"abstract_inverted_index":{"The":[0,93,109,129,147,198,219,252],"objective":[1],"of":[2,51,71,81,88,157,186,193,230,242],"this":[3],"research":[4],"is":[5,56],"to":[6,20,36,68,75,178,182,223],"develop":[7,29,76],"a":[8,97,113,155,194],"theoretical":[9],"Structural":[10],"Impairment":[11],"Detection":[12],"System":[13],"(SIDS)":[14],"for":[15],"timber":[16,23,26,82],"railway":[17,27,83],"bridges.":[18],"Due":[19],"fatigue,":[21],"the":[22,43,52,69,72,77,127,133,136,139,145,160,170,225,231,234,243,246,262],"stringers":[24,44],"in":[25,42,107,119,257],"bridges":[28,84],"shear":[30,33],"cracks.":[31],"These":[32],"cracks":[34],"lead":[35],"higher":[37,40],"bridge":[38,195,227,259],"deflections,":[39],"stresses":[41],"and":[45,47,105,190,216,240],"rail,":[46],"shorter":[48],"fatigue":[49],"life":[50],"system.":[53],"A":[54],"SIDS":[55],"proposed":[57],"which":[58],"links":[59],"wheel":[60,137],"path":[61,163],"accelerations":[62,164,174],"obtained":[63,131,166],"from":[64,101,132,205],"traversing":[65],"freight":[66],"cars":[67],"condition":[70,196,228,260],"bridge.\\n\\nIn":[73],"order":[74],"SIDS,":[78],"two":[79],"models":[80,207],"with":[85],"various":[86],"levels":[87],"structural":[89],"impairment":[90],"were":[91,124,135,149,165,175,201,221,254],"developed.":[92],"first":[94],"model":[95,99,111,117,134],"was":[96,112,237,249,265],"quasi-static":[98],"developed":[100],"classical":[102],"beam":[103],"theory":[104],"implemented":[106],"MATLAB.":[108],"second":[110],"dynamic,":[114],"finite":[115],"element":[116],"created":[118],"LS-DYNA.":[120],"Traversing":[121],"axle":[122],"loads":[123],"imposed":[125],"on":[126,159,203],"models.":[128],"results":[130,204],"paths":[138,148],"axles":[140],"take":[141],"as":[142,151,154],"they":[143],"traverse":[144],"bridge.":[146,161],"expressed":[150],"vertical":[152,171],"displacements":[153],"function":[156],"position":[158],"Wheel":[162],"by":[167],"numerically":[168],"differentiating":[169],"displacements.":[172],"\\n\\nThe":[173],"then":[176],"used":[177],"train":[179,210,235,247,263],"neural":[180,199],"networks":[181,200,220,253],"have":[183],"an":[184,187,191],"input":[185],"acceleration":[188],"vector":[189],"output":[192],"vector.":[197],"trained":[202],"both":[206],"under":[208],"three":[209],"speeds:":[211],"40":[212,238],"mph,":[213,215],"30":[214,250],"20":[217,266],"mph.":[218,251,267],"able":[222],"determine":[224],"correct":[226],"90%":[229],"time":[232,244],"when":[233,245,261],"speed":[236,248,264],"mph":[239],"70%":[241],"not":[255],"successful":[256],"determining":[258]},"counts_by_year":[{"year":2023,"cited_by_count":1},{"year":2019,"cited_by_count":1}],"updated_date":"2026-10-03T13:16:28.481748","created_date":"2016-06-24T00:00:00"}