Download or read book Wireless Remote Structural Integrity Monitoring for Railway Bridges written by Thomas R. Hay and published by . This book was released on 2007 with total page 27 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Artificial Intelligence for Robotics and Autonomous Systems Applications written by Ahmad Taher Azar and published by Springer Nature. This book was released on 2023-05-15 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book addresses many applications of artificial intelligence in robotics, namely AI using visual and motional input. Robotic technology has made significant contributions to daily living, industrial uses, and medicinal applications. Machine learning, in particular, is critical for intelligent robots or unmanned/autonomous systems such as UAVs, UGVs, UUVs, cooperative robots, and so on. Humans are distinguished from animals by capacities such as receiving visual information, adjusting to uncertain circumstances, and making decisions to take action in a complex system. Significant progress has been made in robotics toward human-like intelligence; yet, there are still numerous unresolved issues. Deep learning, reinforcement learning, real-time learning, swarm intelligence, and other developing approaches such as tiny-ML have been developed in recent decades and used in robotics. Artificial intelligence is being integrated into robots in order to develop advanced robotics capable of performing multiple tasks and learning new things with a better perception of the environment, allowing robots to perform critical tasks with human-like vision to detect or recognize various objects. Intelligent robots have been successfully constructed using machine learning and deep learning AI technology. Robotics performance is improving as higher quality, and more precise machine learning processes are used to train computer vision models to recognize different things and carry out operations correctly with the desired outcome. We believe that the increasing demands and challenges offered by real-world robotic applications encourage academic research in both artificial intelligence and robotics. The goal of this book is to bring together scientists, specialists, and engineers from around the world to present and share their most recent research findings and new ideas on artificial intelligence in robotics.

Download or read book I3CAC 2021 written by Mahalingam Sundhararajan and published by European Alliance for Innovation. This book was released on 2021-06-04 with total page 1318 pages. Available in PDF, EPUB and Kindle. Book excerpt: I3CAC provides a premier interdisciplinary platform for researchers, practitioners and educators to present and discuss not only the most recent innovations, trends, and concerns but also practical challenges encountered and solutions adopted in the fields of computing, communication and control systems. Participation of three renowned speakers and oral presentations of the 128 authors were presented in our conference. We strongly believe that the I3CAC 2021 conference provides a good forum for all researchers, developers and practitioners to discuss.

Download or read book Real time Bridge Monitoring written by and published by . This book was released on 2013 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Asset Management of Bridges written by Khaled M Mahmoud and published by CRC Press. This book was released on 2017-08-10 with total page 355 pages. Available in PDF, EPUB and Kindle. Book excerpt: Maintaining bridges in good condition has extended service life and proven to be more cost effective than allowing degradation to advance, necessitating costlier bridge rehabilitation or replacement projects. Preventive maintenance is therefore an important tool to retard deterioration and sustain the safe operation of bridges. This includes a continuous effort of periodic inspections, condition evaluations and prioritizing repairs accordingly. The above measures define the framework for asset management of bridges. On August 21-22, 2017, bridge engineering experts from around the world convened at the 9th New York City Bridge Conference to discuss issues of construction, design, inspection, monitoring, preservation and rehabilitation of bridge structures. This volume documents their contributions to the safe operation of bridge assets.

Download or read book Maintenance Safety Risk Management and Life Cycle Performance of Bridges written by Nigel Powers and published by CRC Press. This book was released on 2018-07-04 with total page 550 pages. Available in PDF, EPUB and Kindle. Book excerpt: Maintenance, Safety, Risk, Management and Life-Cycle Performance of Bridges contains lectures and papers presented at the Ninth International Conference on Bridge Maintenance, Safety and Management (IABMAS 2018), held in Melbourne, Australia, 9-13 July 2018. This volume consists of a book of extended abstracts and a USB card containing the full papers of 393 contributions presented at IABMAS 2018, including the T.Y. Lin Lecture, 10 Keynote Lectures, and 382 technical papers from 40 countries. The contributions presented at IABMAS 2018 deal with the state of the art as well as emerging concepts and innovative applications related to the main aspects of bridge maintenance, safety, risk, management and life-cycle performance. Major topics include: new design methods, bridge codes, heavy vehicle and load models, bridge management systems, prediction of future traffic models, service life prediction, residual service life, sustainability and life-cycle assessments, maintenance strategies, bridge diagnostics, health monitoring, non-destructive testing, field testing, safety and serviceability, assessment and evaluation, damage identification, deterioration modelling, repair and retrofitting strategies, bridge reliability, fatigue and corrosion, extreme loads, advanced experimental simulations, and advanced computer simulations, among others. This volume provides both an up-to-date overview of the field of bridge engineering and significant contributions to the process of more rational decision-making on bridge maintenance, safety, risk, management and life-cycle performance of bridges for the purpose of enhancing the welfare of society. The Editors hope that these Proceedings will serve as a valuable reference to all concerned with bridge structure and infrastructure systems, including students, researchers and engineers from all areas of bridge engineering.

Download or read book Structural Integrity Monitoring of Steel Bridges Using Acoustic Emission Techniques written by Rhys Pullin and published by . This book was released on 2001 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Structural Sensing Health Monitoring and Performance Evaluation written by D. Huston and published by CRC Press. This book was released on 2010-09-21 with total page 664 pages. Available in PDF, EPUB and Kindle. Book excerpt: Structural health monitoring (SHM) uses one or more in situ sensing systems placed in or around a structure, providing real-time evaluation of its performance and ultimately preventing structural failure. Although most commonly used in civil engineering, such as in roads, bridges, and dams, SHM is now finding applications in other engineering envir

Download or read book Structural Health Monitoring written by Feng Xiao and published by LAP Lambert Academic Publishing. This book was released on 2015-02-24 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this research is to improve the safety of bridge structures in the state of Alaska through implementation of innovative structural health monitoring (SHM) technologies. The idea is to evaluate structural integrity and serviceability, and to provide reliable information for changing structural response, etc. of monitored bridges. As a new safety and management tool, this SHM system will complement traditional bridge inspection methods. Implementation of an effective monitoring system will likely result in a reduction in inspection manpower, early detection of deterioration/damage, development of optimum inspection cycle and repair schedules before deterioration/damage grows to a condition where major repairs are required.

Download or read book Departments of Transportation and Housing and Urban Development and Related Agencies Appropriations for 2009 written by United States. Congress. House. Committee on Appropriations. Subcommittee on Transportation, Housing and Urban Development, and Related Agencies and published by . This book was released on 2008 with total page 1468 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Strain based Fatigue Crack Monitoring of Steel Bridges Using Wireless Elastomeric Skin Sensors written by Jian Li and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Fatigue cracks that develop in steel highway bridges under repetitive traffic loads are one of the major mechanisms that degrade structural integrity. If bridges are not appropriately inspected and maintained, fatigue cracks can eventually lead to catastrophic failures, in particular for fracture-critical bridges. Bridge owners, such as state Departments of Transportation (DOTs), typically rely on trained bridge inspectors to visually inspect steel bridges for fatigue cracking so that appropriate repairs can be applied before cracks reach critical sizes. However, visual inspections can be prone to error due to inconsistent skills and result interpretation among inspectors. Advanced approaches for detecting and/or monitoring of fatigue cracks have been investigated in both the structural health monitoring (SHM) and nondestructive testing (NDT) communities. An important challenge with the existing methods is their reliance on extensive human operations to collect critical measurements in the field, making it challenging to implement long-term continuous crack monitoring of steel bridges. In this report, a wireless elastomeric skin sensor is proposed to monitor fatigue cracks in steel bridges. The wireless elastomeric skin sensor consists of three components: (1) a large-area strain-based skin sensor, termed soft elastomeric capacitor (SEC), serving as the fundamental sensing unit for crack monitoring; (2) a newly-developed data acquisition (DAQ) board for measuring the small capacitance change from the SEC under fatigue cracking; and (3) a wireless sensing platform (Xnode) for transferring SEC’s signal from the DAQ board to the base station in the field. Validation of the wireless elastomeric skin sensor is completed through several numerical and experimental investigations of the fundamental sensing unit, SEC, for fatigue crack monitoring. We validate the integrated monitoring system through a field deployment on a steel highway bridge. Compared with the off-the-shelf DAQ system, the newly-developed sensor board can collect SEC measurements with better noise performance. More importantly, the developed sensor board can be integrated with the wireless sensing platform Xnode to transfer the collected SEC signals to the base station through wireless communication. This capability will significantly improve the flexibility of the monitoring system by reducing the cabling work in the field. As a result, the integration of wireless capacitive sensing and the SEC technology enables a wireless elastomeric skin sensor for fatigue sensing of steel bridges. Data collected in the field showed that, through the trigger-based sensing mechanism, the wireless crack monitoring system was able to collect data continuously and autonomously from the SEC sensors and the strain gauge under the traffic loading. By processing the raw measurements using the proposed algorithm, Crack Growth Indices (CGIs) of each monitored location could be continuously collected and statistically monitored for long-term monitoring of fatigue cracks of steel bridges. Several further development needs were identified to achieve more robust, accurate, and flexible crack monitoring. First, an improved understanding of the SEC sensor behavior under folded configuration is needed to strategically adjust the CGI algorithm when the SECs are attached to corners and joints. Second, the capacitance sensor board is currently based on analogy circuits, meaning the balancing and shunt calibration are performed manually. Converting the analog circuit to a digital one will enable software control and automation of these processes, hence greatly improving the efficiency and flexibility of the wireless sensing. Third, deployment of the sensor network at more diverse structural configurations and more extensive analyses of long-term field data are necessary to ensure adaptability of the proposed CGI algorithm.

Download or read book 3D IC Stacking Technology written by Banqiu Wu and published by McGraw Hill Professional. This book was released on 2011-10-14 with total page 543 pages. Available in PDF, EPUB and Kindle. Book excerpt: The latest advances in three-dimensional integrated circuit stacking technology With a focus on industrial applications, 3D IC Stacking Technology offers comprehensive coverage of design, test, and fabrication processing methods for three-dimensional device integration. Each chapter in this authoritative guide is written by industry experts and details a separate fabrication step. Future industry applications and cutting-edge design potential are also discussed. This is an essential resource for semiconductor engineers and portable device designers. 3D IC Stacking Technology covers: High density through silicon stacking (TSS) technology Practical design ecosystem for heterogeneous 3D IC products Design automation and TCAD tool solutions for through silicon via (TSV)-based 3D IC stack Process integration for TSV manufacturing High-aspect-ratio silicon etch for TSV Dielectric deposition for TSV Barrier and seed deposition Copper electrodeposition for TSV Chemical mechanical polishing for TSV applications Temporary and permanent bonding Assembly and test aspects of TSV technology

Download or read book Low Cost Structural Health Monitoring of Bridges Using Wireless Senspot Sensors written by Mehdi Kalantari and published by . This book was released on 2012 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: Deterioration of highway bridges is a common, yet complex problem. To protect highway bridges, this project combines a number of recent and emerging technologies, microstructured sensing, ultra-low-power wireless communication, and advanced microelectronics, into a novel, small, and lightweight wireless device known as SenSpot. SenSpot sensors are based on Active RF Technology (ART), which offers a high performance method for large-scale sensing, wireless synchronization, and ultra low power wireless communication. To evaluate ART technology, the project investigators studied laboratory and field performance of SenSpot sensors. In particular, research was conducted to study performance of SenSpot sensors in accurate measurement of strain and tilt (inclination). Laboratory experiments showed that although SenSpot sensors operate under extremely tight energy constraints and consume less that 4 microwatts of power, the devices provide a very accurate measurement of strain and tilt. Moreover, field performance of SenSpot sensors installed on a bridge on I495 was closely analyzed. The study showed that SenSpot sensors used to measure tilt on the bridge bearings provide a consistent readout with the expected change in the orientation of the bearings as a result of thermal expansion/contraction of the bridge deck; hence, SenSpot sensors provide a reliable remote monitoring tool to detect instances where bridge bearings could possibly freeze or overturn. Additionally, SenSpot sensors that were used for strain measurement showed that the device can detect instances when loading conditions of a bridge change or a structural change in the bridge happens.

Download or read book Continuous Field Validation of a Wireless Structural Monitoring and Bridge Weigh in motion BWIM System written by Peter Lander (Researcher in civil engineering) and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Life Cycle Analysis and Assessment in Civil Engineering Towards an Integrated Vision written by Robby Caspeele and published by CRC Press. This book was released on 2018-10-15 with total page 5111 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume contains the papers presented at IALCCE2018, the Sixth International Symposium on Life-Cycle Civil Engineering (IALCCE2018), held in Ghent, Belgium, October 28-31, 2018. It consists of a book of extended abstracts and a USB device with full papers including the Fazlur R. Khan lecture, 8 keynote lectures, and 390 technical papers from all over the world. Contributions relate to design, inspection, assessment, maintenance or optimization in the framework of life-cycle analysis of civil engineering structures and infrastructure systems. Life-cycle aspects that are developed and discussed range from structural safety and durability to sustainability, serviceability, robustness and resilience. Applications relate to buildings, bridges and viaducts, highways and runways, tunnels and underground structures, off-shore and marine structures, dams and hydraulic structures, prefabricated design, infrastructure systems, etc. During the IALCCE2018 conference a particular focus is put on the cross-fertilization between different sub-areas of expertise and the development of an overall vision for life-cycle analysis in civil engineering. The aim of the editors is to provide a valuable source of cutting edge information for anyone interested in life-cycle analysis and assessment in civil engineering, including researchers, practising engineers, consultants, contractors, decision makers and representatives from local authorities.

Download or read book Structural Health Monitoring for Bridge Structures Using Wireless Smart Sensors written by Shin Ae Jang and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Structural health monitoring (SHM) has drawn significant attention in recent decades because of its potential to reduce maintenance costs and increase the reliability of structures. An important class of structures that can potentially benefit from SHM are bridges, many of which are structurally deficient due to lack of adequate maintenance. Through condition assessment of these bridges, an effective plan of maintenance can be determined, offering the possibility to prolong service life, as well as to prevent catastrophic disasters due to sudden collapse. To date, numerous damage detection algorithms have been proposed. Still, challenges remain in applying such algorithms to monitor bridges in the field. In reality, the extent of an SHM system is limited by available budgets, which define the number of sensors that can be deployed. This dissertation first presents a damage detection algorithm using static strain developed for efficient structural condition assessment with a few sensor nodes. A laboratory moving vehicle experiment has been developed for validation of the approach. However, just a few sensor nodes in SHM system cannot provide detailed information on damage location. A solution to include many sensors within a limited budget with increased efficiency is to use a Wireless Smart Sensor Network (WSSN) because of the merits of low cost, easy installation, and effective data management. An acceleration-based SHM algorithm for WSSN has been developed with a decentralized network topology. This approach has been implemented into a modularized damage detection service. The SHM application is designed to leverage the on-board computation capability of the WSSN, reducing the transmitted data size by distributing the computation burden. The SHM application for WSSN has been validated in lab-scale experiments on a truss bridge model. Nonetheless, the real challenge of SHM is in the deployment on full-scale bridges for continuous monitoring. The usability and stability of WSSN has been validated on an architectural staircase in the Siebel Center. Based on the usability investigation, the deployment of the world0́9s largest WSSN on the Jindo Bridge, a cable-stayed bridge has been achieved in South Korea. The main purpose of the deployment was to validate the bridge monitoring system using WSSN and energy harvesting devices in a long-term manner. The ultimate goal of this dissertation is to deploy the developed on-board decentralized damage identification application using WSSN on a historic truss bridge. As a first step, a series of dynamic tests were conducted for modal analysis using both wired and wireless sensor systems. During the tests, the functionality of the wireless sensor system with ISHMP Services Toolsuite was confirmed. For model-based damage identification approach developed herein, a finite element (FE) model was created. The initial FE model was updated based on a visual estimate of the corrosion. The updated model was used to generate baseline information for damage detection. Finally, the WSSN-based autonomous SHM system using the decentralized damage detection application was deployed on the historic bridge. The permanent SHM system was installed on the bridge, and the damage detection application was successfully run on the bridge. The damage detection results using the comprehensive application will be compared with those from the measured data. In summary, this dissertation provides a robust SHM system for bridge structures in use of WSSN. The decentralized damage detection approach is experimentally validated for WSSN. The performance of WSSN and energy harvesting devices will be evaluated.

Download or read book The Remote Continuous Structural Health Monitoring of the East 12th Street Bridge written by Derek Jay Hemphill and published by . This book was released on 2005 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt: With 28% of the approximately 25,000 bridges in Iowa being classified as structurally deficient, functionally obsolete, or both, the State of Iowa follows the national trend of an aging infrastructure in dire need of repair or replacement with a relatively limited funding base to do so. Therefore, there is a need to develop new materials with properties which may lead to longer life-spans and reduced life-cycle costs. In addition, new methods to determine the condition of structures are needed to effectively monitor the structures and identify when the useful life of the structure has expired. High Performance Steel (HPS) has emerged as a new material with enhanced weldability, weathering capabilities, and fracture toughness compared to conventional structural steels. In 2004 the Iowa Department of Transportation (Iowa DOT) opened Iowa's first HPS girder bridge, the East 12th Street Bridge over 1-235 in Des Moines, IA. The objective of the project was to evaluate HPS as a viable option for use in bridges in Iowa through a Structural Health Monitoring (SHM) system. The scope of the project included construction documentation of the E. 12th St. Bridge and concurrently developing a remote, continuous SHM system utilizing Fiber Optic sensing technology to evaluate the structural performance of the bridge. The SHM system included bridge evaluation parameters, similar to design parameters used by bridge engineers, for evaluating the structure. Through the successful completion of this project, a baseline of bridge performance was established which can be used for continued long-term monitoring of the structure. The structural performance of the HPS bridge exceeded design parameters and is performing well. Although some problems were encountered with the SHM system, the system is currently functioning well and recommendations to improve the system have been made.