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Author Chalioris, C.E.; A. Papadopoulos, N.; Sapidis, G.; C. Naoum, M.; Golias, E.
Title EMA-based Monitoring Method of Strengthened Beam-Column Joints Type Conference Article
Year 2023 Publication Proceedings of the 20th International ISCRAM Conference Abbreviated Journal Iscram 2023
Volume Issue Pages 853-873
Keywords Structural Health Monitoring (SHM); Beam-Column Joint (BCJ); Carbon Fiber-Reinforced Polymer (C-FRP) Ropes; Hierarchical Clustering; Piezoelectric Lead Zirconate Titanate (PZT) Transducers.
Abstract Reinforced concrete (RC) beam-column joints (BCJ) are crucial structural components, primarily during seismic excitations, so their structural health monitoring (SHM) is essential. Additionally, BCJ of existing old RC frame structures usually exhibits brittle behavior due to insufficient transverse reinforcement. To alter the brittle behavior of BCJ, an innovative reinforcing technique has been employed, accompanied by a real-time SHM system. Carbon fiber-reinforced polymer (C-FRP) rope as near surface-mounted (NSM) reinforcement has been utilized as external reinforcement of the column and the joint panel. The use of piezoelectric lead zirconate titanate (PZT) transducers for real-time SHM of BCJ sub-assemblages was investigated. Statistical damage indices, such as RMSD and MAPD, were employed to quantify the damage. Furthermore, an innovative approach based on hierarchical clustering was introduced. The experiment results revealed that the damage level of the reference and the retrofitted specimens were successfully diagnosed with PZT transducers.
Address Democritus University of Thrace; Democritus University of Thrace; Democritus University of Thrace; Democritus University of Thrace; Democritus University of Thrace
Corporate Author Thesis
Publisher University of Nebraska at Omaha Place of Publication Omaha, USA Editor Jaziar Radianti; Ioannis Dokas; Nicolas Lalone; Deepak Khazanchi
Language English Summary Language Original Title
Series Editor Hosssein Baharmand Series Title Abbreviated Series Title
Series Volume Series Issue Edition 1
ISSN ISBN Medium
Track Infrastructure Health Monitoring During Crises and Disaster Expedition Conference
Notes http://dx.doi.org/10.59297/PEEC4879 Approved no
Call Number ISCRAM @ idladmin @ Serial 2571
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Author Jendreck, M.; Hellriegel, J.; Allmann, J.; Restel, H.; Pfennigschmidt, S.; Meissen, U.; Fuchs-Kittowski, F.
Title ROBUST communication platform – A decentralized, distributed communi cation platform for the earthquake early warning system ROBUST Type Conference Article
Year 2023 Publication Proceedings of the 20th International ISCRAM Conference Abbreviated Journal Iscram 2023
Volume Issue Pages 822-836
Keywords Earthquake; Early Warning System; Communication Platform.
Abstract Strong earthquakes of great intensity pose a severe threat to human life and property. Earthquake early warning systems are designed to give people in endangered areas valuable seconds to save their lives and property. The basis of an efficient warning system is a communication infrastructure that provides high-speed and reliable communication between the components of the warning system. This paper presents the distributed, decentralized communication platform for the ROBUST project. It discusses the key challenges and requirements such as resilience, real-time capability and target group-specific information distribution that are placed on such a communication platform. In addition, it presents the conception of the communication platform, which is based on a subscriber procedure between autonomous, decentralized peers (nodes), in order to be able to realize the requirements. Finally, it details the technical implementation, practical realization, and evaluation of the communication platform.
Address Fraunhofer FOKUS
Corporate Author Thesis
Publisher University of Nebraska at Omaha Place of Publication Omaha, USA Editor Jaziar Radianti; Ioannis Dokas; Nicolas Lalone; Deepak Khazanchi
Language English Summary Language Original Title
Series Editor Hosssein Baharmand Series Title Abbreviated Series Title
Series Volume Series Issue Edition 1
ISSN ISBN Medium
Track Infrastructure Health Monitoring During Crises and Disaster Expedition Conference
Notes http://dx.doi.org/10.59297/VRXV2511 Approved no
Call Number ISCRAM @ idladmin @ Serial 2569
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Author Ramsey, A.; Kale, A.; Kassa, Y.; Gandhi, R.; Ricks, B.
Title Toward Interactive Visualizations for Explaining Machine Learning Models Type Conference Article
Year 2023 Publication Proceedings of the 20th International ISCRAM Conference Abbreviated Journal Iscram 2023
Volume Issue Pages 837-852
Keywords Explainable Ai; Data Visualization; Bridge Health; Decision Trees
Abstract Researchers and end users generally demand more trust and transparency from Machine learning (ML) models due to the complexity of their learned rule spaces. The field of eXplainable Artificial Intelligence (XAI) seeks to rectify this problem by developing methods of explaining ML models and the attributes used in making inferences. In the area of structural health monitoring of bridges, machine learning can offer insight into the relation between a bridge’s conditions and its environment over time. In this paper, we describe three visualization techniques that explain decision tree (DT) ML models that identify which features of a bridge make it more likely to receive repairs. Each of these visualizations enable interpretation, exploration, and clarification of complex DT models. We outline the development of these visualizations, along with their validity by experts in AI and in bridge design and engineering. This work has inherent benefits in the field of XAI as a direction for future research and as a tool for interactive visual explanation of ML models.
Address University of Nebraska at Omaha; University of Nebraska at Omaha; University of Nebraska at Omaha; University of Nebraska at Omaha
Corporate Author Thesis
Publisher University of Nebraska at Omaha Place of Publication Omaha, USA Editor Jaziar Radianti; Ioannis Dokas; Nicolas Lalone; Deepak Khazanchi
Language English Summary Language Original Title
Series Editor Hosssein Baharmand Series Title Abbreviated Series Title
Series Volume Series Issue Edition 1
ISSN ISBN Medium
Track Infrastructure Health Monitoring During Crises and Disaster Expedition Conference
Notes http://dx.doi.org/10.59297/ENJI5258 Approved no
Call Number ISCRAM @ idladmin @ Serial 2570
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