Development of a Fatigue Life Assessment Model for Pairing Fatigue Damage Prognoses with Bridge Management Systems

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dc.contributor.authorSaad, Timothy
dc.contributor.authorFu, Chung C.
dc.contributor.authorZhao, Gengwen
dc.contributor.authorXu, Chaoran
dc.date.accessioned2019-12-02T16:58:37Z
dc.date.available2019-12-02T16:58:37Z
dc.date.issued2018-12-18
dc.descriptionPartial funding for Open Access provided by the UMD Libraries' Open Access Publishing Fund.
dc.description.abstractFatigue damage is one of the primary safety concerns for steel bridges reaching the end of their design life. Currently, US federal requirements mandate regular inspection of steel bridges for fatigue cracks; however, these inspections rely on visual inspection, which is subjective to the inspector’s physically inherent limitations. Structural health monitoring (SHM) can be implemented on bridges to collect data between inspection intervals and gather supplementary information on the bridges’ response to loads. Combining SHM with finite element analyses, this paper integrates two analysis methods to assess fatigue damage in the crack initiation and crack propagation periods of fatigue life. The crack initiation period is evaluated using S-N curves, a process that is currently used by the FHWA and AASHTO to assess fatigue damage. The crack propagation period is evaluated with linear elastic fracture mechanic-based finite element models, which have been widely used to predict steady-state crack growth behavior. Ultimately, the presented approach will determine the fatigue damage prognoses of steel bridge elements and damage prognoses are integrated with current condition state classifications used in bridge management systems. A case study is presented to demonstrate how this approach can be used to assess fatigue damage on an existing steel bridge.en_US
dc.identifierhttps://doi.org/10.13016/koyv-yjsm
dc.identifier.citationTimothy Saad, Chung C. Fu, Gengwen Zhao and Chaoran Xu (December 18th 2018). Development of a Fatigue Life Assessment Model for Pairing Fatigue Damage Prognoses with Bridge Management Systems [Online First], IntechOpen, DOI: 10.5772/intechopen.82050. Available from: https://www.intechopen.com/online-first/development-of-a-fatigue-life-assessment-model-for-pairing-fatigue-damage-prognoses-with-bridge-manaen_US
dc.identifier.urihttp://hdl.handle.net/1903/25301
dc.language.isoen_USen_US
dc.publisherIntechOpenen_US
dc.relation.isAvailableAtA. James Clark School of Engineeringen_us
dc.relation.isAvailableAtCivil & Environmental Engineeringen_us
dc.relation.isAvailableAtDigital Repository at the University of Marylanden_us
dc.relation.isAvailableAtUniversity of Maryland (College Park, MD)en_us
dc.subjectfatigueen_US
dc.subjectfatigue damageen_US
dc.subjectstructural health monitoringen_US
dc.subjectdamage prognosesen_US
dc.subjectfatigue assessmenten_US
dc.subjectbridge management systemsen_US
dc.subjectcondition ratingsen_US
dc.titleDevelopment of a Fatigue Life Assessment Model for Pairing Fatigue Damage Prognoses with Bridge Management Systemsen_US
dc.typeBook chapteren_US

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