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• 2008377902 abstract "This report is divided into two volumes. Volume I summarizes a structural health monitoring (SHM) system that was developed for the Iowa DOT to remotely and continuously monitor fatigue critical bridges (FCB) to aid in the detection of crack formation. The developed FCB SHM system enables bridge owners to remotely monitor FCB for gradual or sudden damage formation. The SHM system utilizes fiber bragg grating (FBG) fiber optic sensors (FOSs) to measure strains at critical locations. The strain-based SHM system is trained with measured performance data to identify typical bridge response when subjected to ambient traffic loads, and the knowledge is used to evaluate newly collected data. At specified intervals, the SHM system autonomously generates evaluation reports that summarize the current behavior of the bridge. The evaluation reports are collected and distributed to the bridge owner for interpretation and decision making. This volume (Volume II) summarizes the development and demonstration of an autonomous, continuous SHM system that can be used to monitor typical girder bridges. The developed SHM system can be grouped into two main categories: an office component and a field component. The office component is a structural analysis software program that can be used to generate thresholds which are used for identifying isolated events. The field component includes hardware and field monitoring software which performs data processing and evaluation. The hardware system consists of sensors, data acquisition equipment, and a communication system backbone. The field monitoring software has been developed such that, once started, it will operate autonomously with minimal user interaction. In general, the SHM system features two key uses. First, the system can be integrated into an active bridge management system that tracks usage and structural changes. Second, the system helps owners to identify damage and deterioration.".
• 2008377902 contributor B11225653.
• 2008377902 contributor B11225654.
• 2008377902 created "[2007]".
• 2008377902 date "2007".
• 2008377902 date "[2007]".
• 2008377902 dateCopyrighted "[2007]".
• 2008377902 description "Final report.".
• 2008377902 description "Sponsored by the Iowa Dept. of Transportation and the Iowa Highway Research Board project 03-135 project TR-493.".
• 2008377902 description "This report is divided into two volumes. Volume I summarizes a structural health monitoring (SHM) system that was developed for the Iowa DOT to remotely and continuously monitor fatigue critical bridges (FCB) to aid in the detection of crack formation. The developed FCB SHM system enables bridge owners to remotely monitor FCB for gradual or sudden damage formation. The SHM system utilizes fiber bragg grating (FBG) fiber optic sensors (FOSs) to measure strains at critical locations. The strain-based SHM system is trained with measured performance data to identify typical bridge response when subjected to ambient traffic loads, and the knowledge is used to evaluate newly collected data. At specified intervals, the SHM system autonomously generates evaluation reports that summarize the current behavior of the bridge. The evaluation reports are collected and distributed to the bridge owner for interpretation and decision making. This volume (Volume II) summarizes the development and demonstration of an autonomous, continuous SHM system that can be used to monitor typical girder bridges. The developed SHM system can be grouped into two main categories: an office component and a field component. The office component is a structural analysis software program that can be used to generate thresholds which are used for identifying isolated events. The field component includes hardware and field monitoring software which performs data processing and evaluation. The hardware system consists of sensors, data acquisition equipment, and a communication system backbone. The field monitoring software has been developed such that, once started, it will operate autonomously with minimal user interaction. In general, the SHM system features two key uses. First, the system can be integrated into an active bridge management system that tracks usage and structural changes. Second, the system helps owners to identify damage and deterioration.".
• 2008377902 description "v. 1 Monitoring the structural condition of fracture-critical bridges using fiber optic technology --- v. 2 Structural health monitoring system for secondary road bridges.".
• 2008377902 extent "2 v. (various pagings) :".
• 2008377902 hasFormat "Also available via the Internet.".
• 2008377902 identifier tr493%20Vol%20I.pdf.
• 2008377902 identifier tr493%20Vol%20II.pdf.
• 2008377902 isFormatOf "Also available via the Internet.".
• 2008377902 issued "2007".
• 2008377902 issued "[2007]".
• 2008377902 language "eng".
• 2008377902 publisher "[Ames, IA] : Iowa Department of Transportation, Iowa Highway Research Board,".
• 2008377902 relation "Also available via the Internet.".
• 2008377902 spatial "Iowa".
• 2008377902 subject "624.2 22".
• 2008377902 subject "Fiber optics.".
• 2008377902 subject "Fracture tests. trt".
• 2008377902 subject "Iron and steel bridges Iowa Evaluation.".
• 2008377902 subject "Secondary roads. trt".
• 2008377902 subject "Structural health monitoring.".
• 2008377902 subject "Structural tests. trt".
• 2008377902 subject "TG315 .E93 2007".
• 2008377902 tableOfContents "v. 1 Monitoring the structural condition of fracture-critical bridges using fiber optic technology --- v. 2 Structural health monitoring system for secondary road bridges.".
• 2008377902 title "Evaluation of steel bridges / by Terry J. Wipf ...[et al.].".
• 2008377902 type "text".