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Vibration Fatigue by Spectral Methods

Vibration Fatigue by Spectral Methods Book
Author : Janko Slavič,Miha Boltezar,Matjaz Mrsnik,Martin Cesnik,Jaka Javh
Publisher : Elsevier
Release : 2020-08-20
ISBN : 0128223669
Language : En, Es, Fr & De

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Book Description :

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

Spectral Method in Multiaxial Random Fatigue

Spectral Method in Multiaxial Random Fatigue Book
Author : Adam Nieslony,Ewald Macha
Publisher : Springer Science & Business Media
Release : 2007-09-04
ISBN : 3540738231
Language : En, Es, Fr & De

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Book Description :

This monograph examines the theoretical foundations of the spectral method for fatigue life determination. The authors discuss a rule of description of random loading states with the matrix of power spectral density functions of the stress/strain tensor components. Some chosen criteria of multiaxial fatigue failure are analyzed. The formula proposed in this book enables readers to determine power spectral density of the equivalent history directly from the components of the power spectral density matrix of the multidimensional stochastic process.

Random Vibration and Spectral Analysis Vibrations al atoires et analyse spectral

Random Vibration and Spectral Analysis Vibrations al  atoires et analyse spectral Book
Author : A. Preumont
Publisher : Springer Science & Business Media
Release : 1994-09-30
ISBN : 9780792330363
Language : En, Es, Fr & De

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Book Description :

I became interested in Random Vibration during the preparation of my PhD dissertation, which was concerned with the seismic response of nuclear reactor cores. I was initiated into this field through the cla.ssical books by Y.K.Lin, S.H.Crandall and a few others. After the completion of my PhD, in 1981, my supervisor M.Gera.din encouraged me to prepare a course in Random Vibration for fourth and fifth year students in Aeronautics, at the University of Liege. There was at the time very little material available in French on that subject. A first draft was produced during 1983 and 1984 and revised in 1986. These notes were published by the Presses Poly techniques et Universitaires Romandes (Lausanne, Suisse) in 1990. When Kluwer decided to publish an English translation ofthe book in 1992, I had to choose between letting Kluwer translate the French text in-extenso or doing it myself, which would allow me to carry out a sustantial revision of the book. I took the second option and decided to rewrite or delete some of the original text and include new material, based on my personal experience, or reflecting recent technical advances. Chapter 6, devoted to the response of multi degree offreedom structures, has been completely rewritten, and Chapter 11 on random fatigue is entirely new. The computer programs which have been developed in parallel with these chapters have been incorporated in the general purpose finite element software SAMCEF, developed at the University of Liege.

Metal Fatigue Analysis Handbook

Metal Fatigue Analysis Handbook Book
Author : Yung-Li Lee,Mark E. Barkey,Hong-Tae Kang
Publisher : Elsevier
Release : 2011-10-06
ISBN : 0123852056
Language : En, Es, Fr & De

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Book Description :

Understand why fatigue happens and how to model, simulate, design and test for it with this practical, industry-focused reference Written to bridge the technology gap between academia and industry, the Metal Fatigue Analysis Handbook presents state-of-the-art fatigue theories and technologies alongside more commonly used practices, with working examples included to provide an informative, practical, complete toolkit of fatigue analysis. Prepared by an expert team with extensive industrial, research and professorial experience, the book will help you to understand: Critical factors that cause and affect fatigue in the materials and structures relating to your work Load and stress analysis in addition to fatigue damage-the latter being the sole focus of many books on the topic How to design with fatigue in mind to meet durability requirements How to model, simulate and test with different materials in different fatigue scenarios The importance and limitations of different models for cost effective and efficient testing Whilst the book focuses on theories commonly used in the automotive industry, it is also an ideal resource for engineers and analysts in other disciplines such as aerospace engineering, civil engineering, offshore engineering, and industrial engineering. The only book on the market to address state-of-the-art technologies in load, stress and fatigue damage analyses and their application to engineering design for durability Intended to bridge the technology gap between academia and industry - written by an expert team with extensive industrial, research and professorial experience in fatigue analysis and testing An advanced mechanical engineering design handbook focused on the needs of professional engineers within automotive, aerospace and related industrial disciplines

Engineering Asset Management Systems Professional Practices and Certification

Engineering Asset Management   Systems  Professional Practices and Certification Book
Author : Peter W. Tse,Joseph Mathew,King Wong,Rocky Lam,C.N. Ko
Publisher : Springer
Release : 2014-12-09
ISBN : 3319095072
Language : En, Es, Fr & De

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Book Description :

This proceeding represents state-of-the-art trends and developments in the emerging field of engineering asset management as presented at the Eight World Congress on Engineering Asset Management (WCEAM). The Proceedings of the WCEAM 2013 is an excellent reference for practitioners, researchers and students in the multidisciplinary field of asset management, covering topics such as: Asset condition monitoring and intelligent maintenance, 2. Asset data warehousing, data mining and fusion, 3. Asset performance and level-of-service models, 4. Design and life-cycle integrity of physical assets, 5. Deterioration and preservation models for assets, 6. Education and training in asset management, 7. Engineering standards in asset management, 8. Fault diagnosis and prognostics, 9. Financial analysis methods for physical assets, 10. Human dimensions in integrated asset management, 11. Information quality management, 12. Information systems and knowledge management, 13. Intelligent sensors and devices, 14. Maintenance strategies in asset management, 15. Optimisation decisions in asset management, 16. Risk management in asset management, 17. Strategic asset management, 18. Sustainability in asset management. King WONG served as Congress Chair for WCEAM 2013 and ICUMAS 2013 is the President of the Hong Kong Institute of Utility Specialists (HKIUS) and Convener of International Institute of Utility Specialists (IIUS). Peter TSE is the Director of the Smart Engineering Asset Management laboratory (SEAM) at the City University of Hong Kong and served as the Chair of WCEAM 2013 Organising Committee. Joseph MATHEW served as the Co-Chair of WCEAM 2013 is also WCEAM’s General Chair. He is the Chief Executive Officer of Asset Institute, Australia.

Random Vibrations

Random Vibrations Book
Author : Loren D. Lutes,Shahram Sarkani
Publisher : Butterworth-Heinemann
Release : 2004
ISBN : 0750677651
Language : En, Es, Fr & De

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Book Description :

The topic of Random Vibrations is the behavior of structural and mechanical systems when they are subjected to unpredictable, or random, vibrations. These vibrations may arise from natural phenomena such as earthquakes or wind, or from human-controlled causes such as the stresses placed on aircraft at takeoff and landing. Study and mastery of this topic enables engineers to design and maintain structures capable of withstanding random vibrations, thereby protecting human life. Random Vibrations will lead readers in a user-friendly fashion to a thorough understanding of vibrations of linear and nonlinear systems that undergo stochastic-random-excitation. Provides over 150 worked out example problems and, along with over 225 exercises, illustrates concepts with true-to-life engineering design problems Offers intuitive explanations of concepts within a context of mathematical rigor and relatively advanced analysis techniques. Essential for self-study by practicing engineers, and for instruction in the classroom.

VIBRATION FATIGUE ANALYSIS OF EQUIPMENTS USED IN AEROSPACE

VIBRATION FATIGUE ANALYSIS OF EQUIPMENTS USED IN AEROSPACE  Book
Author : N.A
Publisher :
Release : 2005
ISBN :
Language : En, Es, Fr & De

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Book Description :

ABSTRACT VIBRATION FATIGUE ANALYSIS OF EQUIPMENTS USED IN AEROSPACE AYKAN, Murat M. Sc., Department of Mechanical Engineering Supervisor: Assoc. Prof. Dr. F. Suat KADIOÐLU Co-Supervisor: Assoc. Prof. Dr. Mehmet ÇELÝK June 2005, 123 Pages Metal Fatigue of dynamically loaded structures is a very common phenomenon in engineering practice. As the loading is dynamic one cannot neglect the dynamics of the structure. When the loading frequency has a wide bandwidth then there is high probability that the resonance frequencies of the structure will be excited. When this happens then one cannot assume that the structures response to the loading will remain linear in the frequency domain. Thus to overcome such situations frequency domain fatigue analysis methods exist which include the dynamics of the structure. In this thesis, a Helicopters Self-Defensive System2s Chaff/Flare Dispenser Bracket is analyzed by Vibration Fatigue Method as a part of an ASELSAN project. To obtain the loading (boundary conditions), operational flight tests with accelerometers were performed. The obtained acceleration versus time signals are analyzed and converted to Power Spectral Densities (PSD), which are functions of frequency. In order to obtain the stresses for fatigue analysis, a finite element model of the bracket has been created. The dynamics of the finite element model was verified by performing experimental modal tests on a prototype. From the verified model, stress transfer functions have been obtained and combined with the loading PSD2s to get the response stress PSD2s. The fatigue analysis results are verified by accelerated life tests on the prototype. Also in this study, the effect of single axis shaker testing for fatigue on the specimen is obtained.

Fatigue and Fracture Mechanics XXV

Fatigue and Fracture Mechanics XXV Book
Author : Dariusz Skibicki
Publisher : Trans Tech Publications Ltd
Release : 2014-11-26
ISBN : 3038267082
Language : En, Es, Fr & De

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Book Description :

Collection of selected, peer reviewed papers from the 25th Polish National Conference on „Fatigue and Fracture Mechanics”, May 20-23, 2014, Fojutowo, Poland. The 45 papers are grouped as follows: Chapter 1: Fatigue of Materials, Chapter 2: Fracture Behaviour of Materials, Chapter 3: Other Aspects of Material Strength.

Introduction to Finite Element Vibration Analysis

Introduction to Finite Element Vibration Analysis Book
Author : Maurice Petyt
Publisher : Cambridge University Press
Release : 2010-08-23
ISBN : 1139490060
Language : En, Es, Fr & De

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Book Description :

This is an introduction to the mathematical basis of finite element analysis as applied to vibrating systems. Finite element analysis is a technique that is very important in modeling the response of structures to dynamic loads. Although this book assumes no previous knowledge of finite element methods, those who do have knowledge will still find the book to be useful. It can be utilised by aeronautical, civil, mechanical, and structural engineers as well as naval architects. This second edition includes information on the many developments that have taken place over the last twenty years. Existing chapters have been expanded where necessary, and three new chapters have been included that discuss the vibration of shells and multi-layered elements and provide an introduction to the hierarchical finite element method.

Spectral Finite Element Method

Spectral Finite Element Method Book
Author : Srinivasan Gopalakrishnan,Abir Chakraborty,Debiprosad Roy Mahapatra
Publisher : Springer Science & Business Media
Release : 2007-12-05
ISBN : 1846283566
Language : En, Es, Fr & De

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Book Description :

This book is the first to apply the Spectral Finite Element Method (SFEM) to inhomogeneous and anisotropic structures in a unified and systematic manner. Readers will gain understanding of how to formulate Spectral Finite Element; learn about wave behaviour in inhomogeneous and anisotropic media; and, be able to design some diagnostic tools for monitoring the health of a structure. Tables, figures and graphs support the theory and case studies are included.

Mechanical Vibration and Shock Analysis Fatigue Damage

Mechanical Vibration and Shock Analysis  Fatigue Damage Book
Author : Christian Lalanne
Publisher : John Wiley & Sons
Release : 2013-03-04
ISBN : 1118618939
Language : En, Es, Fr & De

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Book Description :

Mechanical Vibration and Shock Analysis, Second Edition Volume 4: Fatigue Damage Fatigue damage in a system with one degree of freedom is one of the two criteria applied when comparing the severity of vibratory environments. The same criterion is also employed for a specification representing the effects produced by the set of vibrations imposed in a real-world environment. In this volume, which is devoted to the calculation of fatigue damage, the author explores the various hypotheses and models used to describe the behavior of material suffering fatigue and the laws of fatigue accumulation. He also considers the methods of counting response peaks, which are used to establish a histogram when it is impossible to use the probability density of the peaks obtained with a Gaussian signal. The expressions for mean damage and its standard deviation are established and other hypotheses are tested. The Mechanical Vibration and Shock Analysis five-volume series has been written with both the professional engineer and the academic in mind. Christian Lalanne explores every aspect of vibration and shock, two fundamental and extremely significant areas of mechanical engineering, from both a theoretical and practical point of view. The five volumes cover all the necessary issues in this area of mechanical engineering. The theoretical analyses are placed in the context of both the real world and the laboratory, which is essential for the development of specifications.

Stochastic Analysis of Structural and Mechanical Vibrations

Stochastic Analysis of Structural and Mechanical Vibrations Book
Author : Loren D. Lutes,Shahram Sarkani
Publisher :
Release : 1997
ISBN :
Language : En, Es, Fr & De

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Book Description :

With the aim of stating the fundamental principles and relationships of structural and mechanical vibrations, this guide focuses on the determination of response levels for dynamical systems excited by forces that can be modeled as stochastic processes. It concentrates material in the beginning of the text, with introductions to the fundamentals of stochastic modeling and vibration problems to acquaint students with applications. There are discussions on progressive topics which are the subject of ongoing research, including state-space analysis, nonlinear dynamics, and fatigue damage; the time history implications of bandwidth, with situations varying from narrowband to white noise; time domain integration techniques which provide viable alternatives to the calculus of residues; and an emphasis on time domain interpretations throughout. It includes a number of worked examples to illustrate the modelling of physical problems as well as the proper application of theoretical solutions.

Mechanical Vibration and Shock Analysis Random Vibration

Mechanical Vibration and Shock Analysis  Random Vibration Book
Author : Christian Lalanne
Publisher : John Wiley & Sons
Release : 2014-05-12
ISBN : 1848216467
Language : En, Es, Fr & De

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Book Description :

The vast majority of vibrations encountered in the real environment are random in nature. Such vibrations are intrinsically complicated and this volume describes the process that enables us to simplify the required analysis, along with the analysis of the signal in the frequency domain. The power spectrum density is also defined, together with the requisite precautions to be taken in its calculations as well as the processes (windowing, overlapping) necessary to obtain improved results. An additional complementary method – the analysis of statistical properties of the time signal – is also described. This enables the distribution law of the maxima of a random Gaussian signal to be determined and simplifies the calculation of fatigue damage by avoiding direct peak counting.

Mechanical Vibration and Shock Analysis Specification Development

Mechanical Vibration and Shock Analysis  Specification Development Book
Author : Christian Lalanne
Publisher : John Wiley & Sons
Release : 2013-03-04
ISBN : 1118619897
Language : En, Es, Fr & De

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Book Description :

Mechanical Vibration and Shock Analysis, Second Edition Volume 5: Specification Development This volume focuses on specification development in accordance with the principle of tailoring. Extreme response and the fatigue damage spectra are defined for each type of stress (sinusoidal vibration, swept sine, shock, random vibration, etc.). The process for establishing a specification from the life cycle profile of the equipment which will be subject to these types of stresses is then detailed. The analysis takes account of the uncertainty factor, designed to cover uncertainties related to the real-world environment and mechanical strength, and the test factor, which takes account of the number of tests performed to demonstrate the resistance of the equipment. The Mechanical Vibration and Shock Analysis five-volume series has been written with both the professional engineer and the academic in mind. Christian Lalanne explores every aspect of vibration and shock, two fundamental and extremely significant areas of mechanical engineering, from both a theoretical and practical point of view. The five volumes cover all the necessary issues in this area of mechanical engineering. The theoretical analyses are placed in the context of both the real world and the laboratory, which is essential for the development of specifications.

Computational Techniques for Materials Composites and Composite Structures

Computational Techniques for Materials  Composites and Composite Structures Book
Author : B. H. V. Topping
Publisher :
Release : 2000
ISBN :
Language : En, Es, Fr & De

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Book Description :

Contains a selection of papers that were presented at The Fifth International Conference on Computational Structures Technology and The Second International Conference on Engineering Computational Technology, which were held in Leuven, Belgium from 6-8 September 2000.