Download or read book Rail Crack Monitoring Using Acoustic Emission Technique written by Dan Li and published by Springer. This book was released on 2018-06-23 with total page 157 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis provides an innovative strategy for rail crack monitoring using the acoustic emission (AE) technique. The field study presented is a significant improvement on laboratory studies in the literature in terms of complex rail profile and crack conditions as well as high operational noise. AE waves induced by crack propagation, crack closure, wheel-rail impact and operational noise were obtained through a series of laboratory and field tests, and analyzed by wavelet transform (WT) and synchrosqueezed wavelet transform (SWT). A wavelet power-based index and the enhanced SWT scalogram were sequentially proposed to classify AE waves induced by different mechanisms according to their energy distributions in the time–frequency domain. A novel crack sizing method taking advantage of crack closure-induced AE waves was developed based on fatigue tests in the laboratory. The propagation characteristics of AE waves in the rail were investigated, and Tsallis synchrosqueezed wavelet entropy (TSWE) with time was finally brought forward to detect and locate rail cracks in the field. The proposed strategy for detection, location and sizing of rail cracks helps to ensure the safe and smooth operation of the railway system. This thesis is of interest to graduate students, researchers and practitioners in the area of structural health monitoring.

Download or read book Advances in Acoustic Emission Technology written by Gongtian Shen and published by Springer. This book was released on 2017-05-19 with total page 418 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume collects the papers from the World Conference on Acoustic Emission 2015 (WCAE-2015) in Hawaii. The latest research and applications of Acoustic Emission (AE) are explored, with particular emphasis on detecting and processing of AE signals, development of AE instrument and testing standards, AE of materials, engineering structures and systems, including the processing of collected data and analytical techniques as well as experimental case studies.

Download or read book Advanced Computing and Intelligent Technologies written by Rabindra Nath Shaw and published by Springer Nature. This book was released on 2022-08-30 with total page 557 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book gathers selected high-quality research papers presented at International Conference on Advanced Computing and Intelligent Technologies (ICACIT 2022), held at BIHER Chennai India, during March 12–13, 2022, jointly organized by Institute of Higher Education and Research Chennai 600073, Indira Gandhi National Tribal University, Regional Campus Manipur, India, and Department of Information Engineering and Mathematics Università Di Siena, Italy. It discusses emerging topics pertaining to advanced computing, intelligent technologies and networks including AI and machine learning, data mining, big data analytics, high performance computing network performance analysis, Internet of things networks, wireless sensor networks, and others. The book offers a valuable asset for researchers from both academia and industries involved in advanced studies.

Download or read book Structural Health Monitoring 2015 written by Fu-Kuo Chang and published by DEStech Publications, Inc. This book was released on 2015-10-01 with total page 1644 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of the Tenth International Workshop on Structural Health Monitoring, September 1–3, 2015. Selected research on the entire spectrum of structural health techniques and areas of applicationAvailable in print, complete online text download or individual articles. Series book comprising two volumes provides selected international research on the entire spectrum of structural health monitoring techniques used to diagnose and safeguard aircraft, vehicles, buildings, civil infrastructure, ships and railroads, as well as their components such as joints, bondlines, coatings and more. Includes special sections on system design, signal processing, multifunctional materials, sensor distribution, embedded sensors for monitoring composites, reliability and applicability in extreme environments. The extensive contents can be viewed below.

Download or read book Structural Health Condition Monitoring of Rails Using Acoustic Emission Techniques written by and published by . This book was released on 2012 with total page 85 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Applied mechanics reviews written by and published by . This book was released on 1948 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Recent Advances in Material Manufacturing and Machine Learning written by Bjorn Schuller and published by CRC Press. This book was released on 2024-06-17 with total page 1016 pages. Available in PDF, EPUB and Kindle. Book excerpt: The main aim of the 2nd international conference on recent advances in materials manufacturing and machine learning processes-2023 (RAMMML-23) is to bring together all interested academic researchers, scientists, engineers, and technocrats and provide a platform for continuous improvement of manufactur□ing, machine learning, design and materials engineering research. RAMMML 2023 received an overwhelm□ing response with more than 530 full paper submissions. After due and careful scrutiny, about 120 of them have been selected for presentation. The papers submitted have been reviewed by experts from renowned institutions, and subsequently, the authors have revised the papers, duly incorporating the suggestions of the reviewers. This has led to significant improvement in the quality of the contributions, Taylor & Francis publications, CRC Press have agreed to publish the selected proceedings of the conference in their book series of Advances in Mechanical Engineering and Interdisciplinary Sciences. This enables fast dissemina□tion of the papers worldwide and increases the scope of visibility for the research contributions of the authors.

Download or read book New Approaches in Modeling Railway Crack Quantification System written by Upamanyu Banerjee and published by LAP Lambert Academic Publishing. This book was released on 2012 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt: With an eye to prevent derailment of high speed trains, vis-a-vis unwarranted loss of lives and property, a formalism is developed. A software model of Rolling Contact Fatigue (RCF) crack propagation in railway tracks is designed, simulating the alarming stress intensity factor around the advancing fatigue cracks. RCF crack monitoring system with acoustic emission count signals, describing the damage threshold of railway tracks is designed. It is noticed through the model that the observed Acoustic Emission (AE) count at a particular instant of time in a specific location of railway track is a true indication of the vulnerability of rail failures. Further to provide hardware validation, a novel method using the intensity of back scattered light is implemented. In view of difference in the intensity of back scattered light from surface irregularities, a model is developed to find out the threshold intensity of scattered light that ensures safety in the railway system against fatigue failure. The proposed model, a completely new of its kind bears a high socio-technological value as it entails the design of an intelligent control system to prevent train accidents."

Download or read book Acoustic emission technique for the detection of flaws in rail written by and published by . This book was released on 1969 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Sensor Technologies for Civil Infrastructures written by Jerome P. Lynch and published by Woodhead Publishing. This book was released on 2022-07-19 with total page 726 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sensor Technologies for Civil Infrastructure, Volume 2: Applications in Structural Health Monitoring, Second Edition, provides an overview of sensor applications and a new section on future and emerging technologies. Part one is made up of case studies in assessing and monitoring specific structures such as bridges, towers, buildings, dams, tunnels, pipelines, and roads. The new edition also includes sensing solutions for assessing and monitoring of naval systems. Part two reviews emerging technologies for sensing and data analysis including diagnostic solutions for assessing and monitoring sensors, unmanned aerial systems, and UAV application in post-hazard event reconnaissance and site assessment. - Includes case studies in assessing structures such as bridges, buildings, super-tall towers, dams, tunnels, wind turbines, railroad tracks, nuclear power plants, offshore structures, naval systems, levees, and pipelines - Reviews future and emerging technologies and techniques including unmanned aerial systems, LIDAR, and ultrasonic and infrared sensing - Describes latest emerging techniques in data analysis such as diagnostic solutions for assessing and monitoring sensors and big data analysis

Download or read book Fracture and Fatigue Assessments of Structural Components written by Alberto Campagnolo and published by MDPI. This book was released on 2020-12-04 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt: In dealing with fracture and fatigue assessments of structural components, different approaches have been proposed in the literature. They are usually divided into three subgroups according to stress-based, strain-based, and energy-based criteria. Typical applications include both linear elastic and elastoplastic materials and plain and notched or cracked components under both static and fatigue loadings. The aim of this Special Issue is to provide an update to the state-of-the-art on these approaches. The topics addressed in this Special Issue are applications from nano- to full-scale complex and real structures and recent advanced criteria for fracture and fatigue predictions under complex loading conditions, such as multiaxial constant and variable amplitude fatigue loadings.

Download or read book Proceedings of the Fourth International Conference on Advances in Computer Engineering and Communication Systems ICACECS 2023 written by C. Kiran Mai and published by Springer Nature. This book was released on 2024-01-22 with total page 402 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is an open access book.The Department of Computer Science & Engineering, VNR VJIET, successfully organized a 2-Day International e-Conference “International Conference on Advances in Computer Engineering and Communication Systems (ICACECS)" (ICACECS-2020, ICACECS-2021 and ICACECS-2022) consecutively for 3 years. This conference is conducted in association with “ Atlantis Highlights in Computer Science (AHCS) , Atlantis Press(part of Springer Nature) ” the publication partner and technically sponsored by Computer Society of India (CSI). Every year there was an overwhelming response from researchers around the globe publishing their research contributions in “Smart Innovations in Mezzanine Technologies, Data Analytics, Networks and Communication Systems” - the theme of the conference. Continuing this legacy, the international e-conference ICACECS-2023 is now scheduled to be conducted on 22nd & 23rd September 2023. This year, ICACECS-2023 is also co-located at THE UNIVERSITY OF THE WEST INDIES(UWI), AT MONA, JAMAICA. UWI Mona, Jamaica is the founding campus of the unique, multi-part, multi-national University of the West Indies. The square mile site welcomed its first undergraduates – 33 medical students from across the West Indies or now, more often, the Caribbean – in October 1948. The UWI is the region’s premier educational institution, with faculties offering a wide range of undergraduate, masters and doctoral programmes in Humanities and Education, Science and Technology, Science and Agriculture, Engineering, Law, Medical Sciences and Social Sciences. Authors are solicited to contribute their submissions illustrating research results and innovations, and significant advances in the fields of Artificial Intelligence, Machine learning, Smart Systems, Networks, and Communication Systems, Quantum computing, Knowledge Engineering and Ontology, Internet of Things, Education Technology and Business Engineering. ICACECS-2023 is a unique forum bringing together scholars from the different countries to participate and transform the Research Landscape of the globe and carve a Road Map for Implementation. It provides a valuable networking opportunity and brings a new era for the Research scholars, Students, Professors, Industrialists providing insights to the recent trends and developments in the field of Computer Science with a special focus on Mezzanine technologies.

Download or read book Structural Health Monitoring of Large Structures Using Acoustic Emission Case Histories written by Kanji Ono and published by MDPI. This book was released on 2020-11-23 with total page 298 pages. Available in PDF, EPUB and Kindle. Book excerpt: Acoustic emission (AE) techniques have successfully been used for assuring the structural integrity of large rocket motorcases since 1963, and their uses have expanded to ever larger structures, especially as structural health monitoring (SHM) of large structures has become the most urgent task for engineering communities around the world. The needs for advanced AE monitoring methods are felt keenly by those dealing with aging infrastructures. Many publications have appeared covering various aspects of AE techniques, but documentation of actual applications of AE techniques has been mostly limited to reports of successful results without technical details that allow objective evaluation of the results. There are some exceptions in the literature. In this Special Issue of the Acoustics section of Applied Sciences, we seek contributions covering these exceptions cited here. Here, we seek contributions describing case histories of AE applications to large structures that have achieved the goals of SHM by providing adequate technical information supporting the success stories. Types of structures can include aerospace and geological structures, bridges, buildings, factories, maritime facilities, off-shore structures, etc. Experiences with AE monitoring methods designed and proven for large stru

Download or read book Monitoring Crack Advance Using Acoustic Emission and Combined Acoustic Emission and Potential Drop in Zr 2 5 Nb written by G. Lin and published by . This book was released on 1998 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: Experithental results are reported on the application of acoustic emission (AE) and combined acoustic emission and potential drop (PD) in crack advance measurement. Acoustic emission by itself is not a quantitastive technique for measuring crack advance. Compared with the application of only PD, using both simultaneously turns out to be quite beneficial. Used to measure delayed hydride cracking velocity in Zr-2.5% Nb, combined AE and PD, together with other techniques such as fractography, produces more reliable results with higher accuracy for isothermal conditions and particularly during temperature transients. Information about the correlation between AE and PD signals has been also obtained, which improves our understanding of the processes being studied.

Download or read book Structural Health Monitoring Using Emerging Signal Processing Approaches with Artificial Intelligence Algorithms written by Chunwei Zhang and published by CRC Press. This book was released on 2024-11-06 with total page 245 pages. Available in PDF, EPUB and Kindle. Book excerpt: Structural health monitoring is a powerful tool across civil, mechanical, automotive, and aerospace engineering, allowing the assessment and measurement of physical parameters in real time. Processing changes in the vibration signals of a dynamic system can detect, locate, and quantify any damage existing in the system. This book presents a comprehensive state‐of‐the‐art review of the applications in time, frequency, and time‐frequency domains of signal‐processing techniques for damage perception, localization, and quantification in various structural systems. Experimental investigations are illustrated, including the development of a set of damage indices based on the signal features extracted through various signal‐processing techniques to evaluate sensitivity in damage identification. Chapters summarize the application of the Hilbert–Huang transform based on three decomposition methods such as empirical mode decomposition, ensemble empirical mode decomposition, and complete ensemble empirical mode decomposition with adaptive noise. Also, the chapters assess the performance and sensitivity of different approaches, including multiple signal classification and empirical wavelet transform techniques in damage detection and quantification. Artificial neural networks for automated damage identification are introduced. This book suits students, engineers, and researchers who are investigating structural health monitoring, signal processing, and damage identification of structures.

Download or read book Wavelets in Medicine and Biology written by Akram Aldroubi and published by CRC Press. This book was released on 1996-04-24 with total page 636 pages. Available in PDF, EPUB and Kindle. Book excerpt: Considerable attention from the international scientific community is currently focused on the wide ranging applications of wavelets. For the first time, the field's leading experts have come together to produce a complete guide to wavelet transform applications in medicine and biology. Wavelets in Medicine and Biology provides accessible, detailed, and comprehensive guidelines for all those interested in learning about wavelets and their applications to biomedical problems.

Download or read book Optical Fiber Sensing and Structural Health Monitoring Technology written by Yanliang Du and published by Springer. This book was released on 2019-01-10 with total page 354 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focuses on optical fiber sensing and structural health monitoring technologies. It provides detailed information on the basic theory of F-P optical fiber sensors, fiber Bragg grating sensors, fiber laser grating sensors and fully distributed optical fiber sensors. Drawing on the authors’ research achievements and many years of practical experience in the field of engineering structure health monitoring, the book elaborates on the structural principle, design and manufacture of optical fiber sensors and monitoring technologies, and briefly describes advances made with regard to multiple engineering structures.