Stochastic Approach to Fatigue

Stochastic Approach to Fatigue

Fluctuations in these processes which are observed experimentally can only be described by means of stochastic processes. Fatigue phenomena in real materials and under complex loading conditions require a more precise analysis of these ...

Author: K. Sobczyk

Publisher: Springer

ISBN: 9783709126226

Category: Technology & Engineering

Page: 301

View: 828

Fatigue of engineering materials is a very complicated process that is difficult to accurately describe and predict. It is no doubt nowadays, that a fatigue of real materials should be regarded as a random phenomenon and analyzed by use of stochastic theory. This volume of the lectures sumarises the latest achievements in stochastic modelling and analysis of fatigue. The lectures cover the following important aspects of modern analysis of fatigue: methodology of stochastic modelling of fatigue, tools for characterization of random fatigue loads, physical and mechanical aspects of random fatigue, basic stochastic models for fatigue and the estimation of fatigue reliability of specific structural systems.
Categories: Technology & Engineering

Developments in the Analysis and Design of Marine Structures

Developments in the Analysis and Design of Marine Structures

Furthermore, stochastic analysis of the fatigue life of a fictitious weld joint in the cantilever beam is carried out. First the stochastic stresses are estimated using the stochastic finite element method and then they are coupled to ...

Author: Jorgen Amdahl

Publisher: CRC Press

ISBN: 9781000533804

Category: Technology & Engineering

Page: 586

View: 623

Developments in the Analysis and Design of Marine Structures is a collection of papers presented at MARSTRUCT 2021, the 8th International Conference on Marine Structures (by remote transmission, 7-9 June 2021, organised by the Department of Marine Technology of the Norwegian University of Science and Technology, Trondheim, Norway), and is essential reading for academics, engineers and professionals involved in the design of marine and offshore structures. The MARSTRUCT Conference series deals with Ship 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; and - Structural Reliability, Safety and Environmental Protection. The MARSTRUCT conferences series of started in Glasgow, UK in 2007, the second event of the series took 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, the sixth in Lisbon, Portugal in May 2017, and the seventh in Drubovnik, Croatia in May 2019. The ‘Proceedings in Marine Technology and Ocean Engineering’ series is dedicated 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.
Categories: Technology & Engineering

Stochastic Modeling of Thermal Fatigue Crack Growth

Stochastic Modeling of Thermal Fatigue Crack Growth

The book describes a systematic stochastic modeling approach for assessing thermal-fatigue crack-growth in mixing tees, based on the power spectral density of temperature fluctuation at the inner pipe surface.

Author: Vasile Radu

Publisher: Springer

ISBN: 3319385194

Category: Technology & Engineering

Page: 89

View: 922

The book describes a systematic stochastic modeling approach for assessing thermal-fatigue crack-growth in mixing tees, based on the power spectral density of temperature fluctuation at the inner pipe surface. It shows the development of a frequency-temperature response function in the framework of single-input, single-output (SISO) methodology from random noise/signal theory under sinusoidal input. The frequency response of stress intensity factor (SIF) is obtained by a polynomial fitting procedure of thermal stress profiles at various instants of time. The method, which takes into account the variability of material properties, and has been implemented in a real-world application, estimates the probabilities of failure by considering a limit state function and Monte Carlo analysis, which are based on the proposed stochastic model. Written in a comprehensive and accessible style, this book presents a new and effective method for assessing thermal fatigue crack, and it is intended as a concise and practice-oriented guide for all undergraduate students, young scientists and researchers dealing with probabilistic assessment of structural integrity.
Categories: Technology & Engineering

Proceedings of the 5th International Symposium on Uncertainty Quantification and Stochastic Modelling

Proceedings of the 5th International Symposium on Uncertainty Quantification and Stochastic Modelling

As fatigue strength limits are obtained strictly experimentally, they carry uncertainties and errors that can ... of uncertainties showed no fatigue failure with a Sines' coefficient of 0.7130, while in the stochastic approach this ...

Author: José Eduardo Souza De Cursi

Publisher: Springer Nature

ISBN: 9783030536695

Category: Technology & Engineering

Page: 472

View: 665

This proceedings book discusses state-of-the-art research on uncertainty quantification in mechanical engineering, including statistical data concerning the entries and parameters of a system to produce statistical data on the outputs of the system. It is based on papers presented at Uncertainties 2020, a workshop organized on behalf of the Scientific Committee on Uncertainty in Mechanics (Mécanique et Incertain) of the AFM (French Society of Mechanical Sciences), the Scientific Committee on Stochastic Modeling and Uncertainty Quantification of the ABCM (Brazilian Society of Mechanical Sciences) and the SBMAC (Brazilian Society of Applied Mathematics).
Categories: Technology & Engineering

Computational Methods for Solids and Fluids

Computational Methods for Solids and Fluids

A stochastic theory of fatigue crack propagation. AIAAJ., 23:117–124, 1985. ISSN 0001-1452; 1533-385X/e. 5. Kazimierz Sobczyk, editor. Stochastic approach to fatigue: experiments, modelling and reliability estimation.

Author: Adnan Ibrahimbegovic

Publisher: Springer

ISBN: 9783319279961

Category: Technology & Engineering

Page: 493

View: 757

This volume contains the best papers presented at the 2nd ECCOMAS International Conference on Multiscale Computations for Solids and Fluids, held June 10-12, 2015. Topics dealt with include multiscale strategy for efficient development of scientific software for large-scale computations, coupled probability-nonlinear-mechanics problems and solution methods, and modern mathematical and computational setting for multi-phase flows and fluid-structure interaction. The papers consist of contributions by six experts who taught short courses prior to the conference, along with several selected articles from other participants dealing with complementary issues, covering both solid mechanics and applied mathematics.
Categories: Technology & Engineering

Mechanics of Structures and Materials XXIV

Mechanics of Structures and Materials XXIV

This paper investigates various fatigue crack models for reproducing fatigue crack development, and proposes a stochastic approach to predict fatigue crack evolution and to analyse failure probability for composite blades.

Author: Hong Hao

Publisher: CRC Press

ISBN: 9781351850216

Category: Science

Page: 1935

View: 941

Mechanics of Structures and Materials: Advancements and Challenges is a collection of peer-reviewed papers presented at the 24th Australasian Conference on the Mechanics of Structures and Materials (ACMSM24, Curtin University, Perth, Western Australia, 6-9 December 2016). The contributions from academics, researchers and practising engineers from Australasian, Asia-pacific region and around the world, cover a wide range of topics, including: • Structural mechanics • Computational mechanics • Reinforced and prestressed concrete structures • Steel structures • Composite structures • Civil engineering materials • Fire engineering • Coastal and offshore structures • Dynamic analysis of structures • Structural health monitoring and damage identification • Structural reliability analysis and design • Structural optimization • Fracture and damage mechanics • Soil mechanics and foundation engineering • Pavement materials and technology • Shock and impact loading • Earthquake loading • Traffic and other man-made loadings • Wave and wind loading • Thermal effects • Design codes Mechanics of Structures and Materials: Advancements and Challenges will be of interest to academics and professionals involved in Structural Engineering and Materials Science.
Categories: Science

Fundamentals of Ultrasonic Nondestructive Evaluation

Fundamentals of Ultrasonic Nondestructive Evaluation

159–214 K. Sobczyk, B.F. Spencer Jr., Random Fatigue—From Data to Theory (Academic, San Diego, 1992) B.F. Spencer, Stochastic diffusion models for fatigue crack growth and reliability estimation, in Stochastic Approach to Fatigue: ...

Author: Lester W. Schmerr Jr.

Publisher: Springer

ISBN: 9783319304632

Category: Technology & Engineering

Page: 758

View: 100

This extensively revised and updated second edition of a widely read classic presents the use of ultrasound in nondestructive evaluation (NDE) inspections. Retaining the first edition's use of wave propagation /scattering theory and linear system theory, this volume also adds significant new material including: the introduction of MATLAB® functions and scripts that evaluate key results involving beam propagation and scattering, flaw sizing, and the modeling of ultrasonic systems. elements of Gaussian beam theory and a multi-Gaussian ultrasonic beam model for bulk wave transducers. a new chapter on the connection between ultrasonic modeling and probability of detection (POD) and reliability models. new and improved derivations of ultrasonic measurement models. updated coverage of ultrasonic simulators that have been developed around the world. Students, engineers, and researchers working in the ultrasonic NDE field will find a wealth of information on the modeling of ultrasonic inspections and the fundamental ultrasonic experiments that support those models in this new edition.
Categories: Technology & Engineering

Essentials of Applied Dynamic Analysis

Essentials of Applied Dynamic Analysis

17.3.3. Stochastic. Fatigue. Analysis. Method. with. Narrow-Banded. Responses. Since the deterministic fatigue analysis approach does not contain the information regarding the energy content at various frequencies, it is not suitable to ...

Author: Junbo Jia

Publisher: Springer Science & Business Media

ISBN: 9783642370038

Category: Technology & Engineering

Page: 424

View: 245

This book presents up-to-date knowledge of dynamic analysis in engineering world. To facilitate the understanding of the topics by readers with various backgrounds, general principles are linked to their applications from different angles. Special interesting topics such as statistics of motions and loading, damping modeling and measurement, nonlinear dynamics, fatigue assessment, vibration and buckling under axial loading, structural health monitoring, human body vibrations, and vehicle-structure interactions etc., are also presented. The target readers include industry professionals in civil, marine and mechanical engineering, as well as researchers and students in this area.
Categories: Technology & Engineering

Proceedings of the 15th International Ship and Offshore Structures Congress

Proceedings of the 15th International Ship and Offshore Structures Congress

Fatigue damage accumulation in engineering materials is usually quantified using a suitable damage parameter that can be used ... The application of the perturbation based Stochastic Finite Element Method (SFEM) to fatigue analysis of ...

Author: A.E Mansour

Publisher: Elsevier

ISBN: 008054116X

Category: Technology & Engineering

Page: 860

View: 198

KEY FEATURES: Provides researchers in Ocean engineering with a thorough review of the latest research in the field Lengthy reports by leading experts A valuable resource for all interested in ocean engineering DESCRIPTION: The International Ship and Offshore Congress (ISSC) is a forum for the exchange of information by experts undertaking and applying marine structural research. These three volumes contain the eight technical committee reports, six Specialist Committee and 2 Special Task Committee reports which were presented for the 15th International Ship and Offshore Structures Congress (ISSC 2004) in San Diego USA, between 11th and 15th August 2003. Volume III will be published in 2004 and is to contain the discussion of the reports, the chairmen's reply, the text of the invited Lecture and the congress report of ISSC 2003.
Categories: Technology & Engineering