Spectral Method For Fatigue Damage Estimation With Non Zero Mean Stress
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Spectral Method For Fatigue Damage Estimation With Non Zero Mean Stress
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Author : Pedro H. Alves Corrêa
language : en
Publisher: Editora Dialética
Release Date : 2022-08-01
Spectral Method For Fatigue Damage Estimation With Non Zero Mean Stress written by Pedro H. Alves Corrêa and has been published by Editora Dialética this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-08-01 with Technology & Engineering categories.
This thesis consists of a fatigue study carried out on an aluminum alloy 2024-T3 in both time domain and frequency domain. Non-zero mean random signals of strain and stress are analyzed in time domain using usual Rainflow method and the damage is accumulated with the Palmgren-Miner rule, according to mean stress equations. The signals are analyzed in frequency domain using the power spectral density and the probability density function. The spectral domain analysis does not consider the negative effect of the mean stress in metal life under fatigue, so the correction factors for mean stresses developed by Goodman, Morrow, and Smith-Watson-Topper are used to change the power spectral density and, thus, the damage calculated by the probability density functions postulated by Dirlik and Tovo and Benasciutti. It is found that both Dirlik and Tovo and Benasciutti are non-conservative for a non-zero mean stress signal when comparing the damage to the one obtained in time domain analysis. When the spectral method is corrected, the results vary from Rainflow 4.9% for wide band and 6.8% for narrow band signals, always in the conservative zone, therefore predicting more damage. Tovo and Benasciutti 2 method is found to be the spectral function with the closest results when compared to the usual Rainflow method in time domain.
Trends In The Analysis And Design Of Marine Structures
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Author : Carlos Guedes Soares
language : en
Publisher: CRC Press
Release Date : 2019-04-15
Trends In The Analysis And Design Of Marine Structures written by Carlos Guedes Soares and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-04-15 with Technology & Engineering categories.
Trends in the Analysis and Design of Marine Structures is a collection of the papers presented at MARSTRUCT 2019, the 7th International Conference on Marine Structures held in Dubrovnik, Croatia, 6-8 May 2019. The MARSTRUCT series of Conferences started in Glasgow, UK in 2007, the second event of the series having taken place in Lisbon, Portugal in March 2009, the third in Hamburg, Germany in March 2011, the fourth in Espoo, Finland in March 2013, the fifth in Southampton, UK in March 2015, and the sixth in Lisbon, Portugal in May 2017. This Conference series specialises in dealing with Ships and Offshore Structures, addressing topics in the fields of: - Methods and Tools for Loads and Load Effects - Methods and Tools for Strength Assessment - Experimental Analysis of Structures - Materials and Fabrication of Structures - Methods and Tools for Structural Design and Optimisation - Structural Reliability, Safety and Environmental Protection. Trends in the Analysis and Design of Marine Structures is an essential document for academics, engineers and all professionals involved in the area of analysis and design of Ships and Offshore Structures. About the series: The ‘Proceedings in Marine Technology and Ocean Engineering’ series is devoted to the publication of proceedings of peer-reviewed international conferences dealing with various aspects of ‘Marine Technology and Ocean Engineering’. The Series includes the proceedings of the following conferences: the International Maritime Association of the Mediterranean (IMAM) conferences, the Marine Structures (MARSTRUCT) conferences, the Renewable Energies Offshore (RENEW) conferences and the Maritime Technology (MARTECH) conferences. The ‘Marine Technology and Ocean Engineering’ series is also open to new conferences that cover topics on the sustainable exploration and exploitation of marine resources in various fields, such as maritime transport and ports, usage of the ocean including coastal areas, nautical activities, the exploration and exploitation of mineral resources, the protection of the marine environment and its resources, and risk analysis, safety and reliability. The aim of the series is to stimulate advanced education and training through the wide dissemination of the results of scientific research.
Phenomena And Computational Models Of Non Proportional Fatigue Of Materials
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Author : Dariusz Skibicki
language : en
Publisher: Springer
Release Date : 2014-06-09
Phenomena And Computational Models Of Non Proportional Fatigue Of Materials written by Dariusz Skibicki and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-06-09 with Science categories.
This book gives an overview on the fatigue of materials under non-proportional loads. It presents the rich spectrum of phenomena and treats various computational models to mathematically describe the non-proportional fatigue of materials.
Applied Mechanics And Materials I
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Author : Guang Fan Li
language : en
Publisher: Trans Tech Publications Ltd
Release Date : 2013-01-11
Applied Mechanics And Materials I written by Guang Fan Li and has been published by Trans Tech Publications Ltd this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-01-11 with Technology & Engineering categories.
Selected, peer reviewed papers from the 2012 International Conference on Applied Mechanics and Materials (ICAMM 2012), November 24-25, 2012, Sanya, China
Sustainability Of Green And Eco Friendly Composites
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Author : Sumit Gupta
language : en
Publisher: CRC Press
Release Date : 2023-08-31
Sustainability Of Green And Eco Friendly Composites written by Sumit Gupta and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2023-08-31 with Technology & Engineering categories.
The book explores the pertinent aspects of sustainability of green and eco-friendly composites including their development methods and processing, characterization, properties, and applications. Significance for the design and engineering of high-performance green and eco-friendly composites is discussed in the present book. Insights on a wide spectrum of potential advanced applications ranging from automotive and aerospace to biomedical and packaging, etc. using these are highlighted. Further, it discusses life cycle and carbon footprint assessment of sustainable materials. Features: Explores different processing methods of green and eco-friendly composites Discusses development and optimization of green nanocomposites for sustainable manufacturing Collates modern green and eco-friendly composites research from theory to application Covers hybridization of reinforced fibers on the performance of green and eco-friendly composites Analyzes and discusses calculation of carbon footprint and Life Cycle Assessment of composites This book is aimed at graduate students and researchers in materials science and engineering, sustainable materials, composites, and nanomaterials.
Reliability Of High Power Mechatronic Systems 1
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Author : Abdelkhalak El Hami
language : en
Publisher: Elsevier
Release Date : 2017-09-27
Reliability Of High Power Mechatronic Systems 1 written by Abdelkhalak El Hami and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-09-27 with Technology & Engineering categories.
This first volume of a set dedicated to the reliability of high-power mechatronic systems focuses specifically on simulation, modeling and optimization in automotive and aerospace applications. In the search to improve industrial competitiveness, the development of methods and tools for the design of products is especially pertinent in the context of cost reduction. This book seeks to propose new methods that simultaneously allow for a quicker design of future mechatronic devices in the automotive and aerospace industries while guaranteeing their increased reliability. The reliability of these critical elements is further validated digitally through new multi-physical and probabilistic models that could ultimately lead to new design standards and reliable forecasting. - Presents a methodological guide that demonstrates the reliability of fractured mechatronic components and devices - Includes numerical and statistical models to optimize the reliability of the product architecture - Helps users develop a methodology to characterize critical elements at the earliest stage
Handbook Of Fatigue Crack Propagation In Metallic Structures
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Author : A. Carpinteri
language : en
Publisher: Newnes
Release Date : 2012-12-02
Handbook Of Fatigue Crack Propagation In Metallic Structures written by A. Carpinteri and has been published by Newnes this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-02 with Technology & Engineering categories.
The purpose of this Handbook is to provide a review of the knowledge and experiences in the field of fatigue fracture mechanics. It is well-known that engineering structures can fail due to cyclic loading. For instance, a cyclically time-varying loading reduces the structure strength and can provoke a fatigue failure consisting of three stages: (a) crack initiation (b) crack propagation and (c) catastrophic failure. Since last century many scientists have tried to understand the reasons for the above-mentioned failures and how to prevent them. This Handbook contains valuable contributions from leading experts within the international scientific community and covers many of the important problems associated with the fatigue phenomena in civil, mechanical and nuclear engineering.
Developments In Reliability Engineering
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Author : Mangey Ram
language : en
Publisher: Elsevier
Release Date : 2024-08-09
Developments In Reliability Engineering written by Mangey Ram and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2024-08-09 with Technology & Engineering categories.
Modern systems have become increasingly complex to design and build, while the demand for reliability and cost-effective enhancement continues. Robust international competition has further intensified the need for all designers, managers, practitioners, scientists, and engineers to ensure a level of reliability of their products and processes before release at the lowest cost.Developments in Reliability Engineering equips its audience with the necessary information to keep up with the latest original research and state-of-the-art advances in reliability engineering. The volume offers an excursus from historical theories and methods to the present-world practical utility of these concepts with worked-out examples. - Guides readers through reliability topics from an historical perspective to new research results, advancements, and latest developments - Draws on the authors' experience of reliability analysis in a range of industries and disciplines, showing the need for reliability from the product design stage right through to aftercare - Provides methods throughout, making this title a good source of actionable information
Vibration Fatigue By Spectral Methods
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Author : Janko Slavič
language : en
Publisher: Elsevier
Release Date : 2020-08-20
Vibration Fatigue By Spectral Methods written by Janko Slavič and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-08-20 with Technology & Engineering categories.
Vibration Fatigue by Spectral Methods relates the structural dynamics theory to the high-cycle vibration fatigue. The book begins with structural dynamics theory and relates the uniaxial and multiaxial vibration fatigue to the underlying structural dynamics and signal processing theory. Organized in two parts, part I gives the theoretical background and part II the selected experimental research. The time- and frequency- domain aspects of signal processing in general, related to structural dynamics and counting methods are covered in detail. It also covers all the underlying theory in structural dynamics, signal processing, uniaxial & multiaxial fatigue; including non-Gaussianity and non-stationarity. Finally, it provides the latest research on multiaxial vibration fatigue and the non-stationarity and non-Gaussianity effects. This book is for engineers, graduate students, researchers and industry professionals working in the field of structural durability under random loading and vibrations and also those dealing with fatigue of materials and constructions. - Introduces generalized structural dynamics theory of multiaxial vibration fatigue - Maximizes understanding of structural dynamics theory in relation to frequency domain fatigue - Illustrates connections between experimental work and theory with case studies, cross-referencing, and parallels to accelerated vibration testing
Fatigue And Fracture Of Materials And Structures
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Author : Grzegorz Lesiuk
language : en
Publisher: Springer Nature
Release Date : 2022-05-09
Fatigue And Fracture Of Materials And Structures written by Grzegorz Lesiuk and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-05-09 with Technology & Engineering categories.
This book presents selected contributions from ICMFM XX and the Polish National Conference—KKMP. The XX International Colloquium on Mechanical Fatigue of Metals (ICMFM XX) was organized on 15–17 September 2021, in the Faculty of Mechanical Engineering of the Wroclaw University of Science and Technology, in Wrocław City, Poland, in a remote form. Its aim was to facilitate and encourage the exchange of knowledge and experiences among the different communities involved in both basic and applied research in the field of fatigue of metals, looking at the problem of fatigue from a multiscale perspective, and exploring analytical and numerical simulative approaches, without losing the perspectives of the application. The Polish National Conference—KKMP 2021—was organized remotely with 50–80 prominent international participants from the fracture mechanics community.