Download or read book Conductor fatigue life research written by G. E. Ramey and published by . This book was released on 1981 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Conductor Fatigue Life Research written by C. W. Springfield and published by . This book was released on 1990 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Conductor Fatigue life Research written by and published by . This book was released on 1981 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Conductor Fatigue Life Research written by G. E. Ramey and published by . This book was released on 1987 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Reliability Analysis of Overhead Transmission Line Multilayered Stranded Conductor clamp Assemblies for Fretting Fatigue Failure written by Oluwafemi Thomas and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Failure of transmission line overhead conductors due to fretting fatigue has led to an increased research effort in understanding the mechanical behavior of these multi-body structures from an experimental perspective and more recently from a computational perspective. However, research devoted to understanding the structural reliability of overhead conductors undergoing deterioration due to fretting fatigue is limited. The current approach to estimate the reliability of these structures has depended on the performance of expensive experiments on conductor - clamp systems that are then grouped into classes on the basis of the idealized stress method. Reliability estimates are then usually defined for the first wire failure of a conductor or some percentage of wire failures in terms of the number of cycles to failure for a specified idealized stress level. A limitation of this approach is that it is not based on the distribution of stresses at the local contact points responsible for initiating and propagating fretting fatigue cracks. The use of this approach results in large uncertainties on the prediction of conductor fatigue life since it does not account for the characteristics of different conductor/clamp configurations. In this thesis, the sources of variability in overhead conductor fatigue life prediction are first identified. A framework for assessing the reliability of overhead conductors under fretting fatigue conditions is then developed. The framework uses finite elements analyses of single contacts and of the conductor/clamp assembly to determine the state of stress at each wire-wire and wire-clamp/keeper contact. The state of stress at contacts is used to evaluate the fretting fatigue potential and to evaluate the probability of fatigue failure at each contact using single wire plain fatigue data. The Poisson binomial distribution is used to estimate the probability of failure for single and multiple wire failures considering all the contact within the conductor/clamp assembly and to develop fragility curves. The model is validated through comparisons with experimental data. Stress-number of cycle curves for one or more wire failures are presented for overhead conductors. Distribution of the number of wire failures in a conductor are also presented. Unlike the current approach, the framework presented in this thesis does not rely on performing expensive tests on the conductor and provides a means for generating specific conductor-clamp SN curves and safe limits for overhead conductor fatigue assessment and management"--

Download or read book Residual Life Evaluation Method for Transmission Line Conductors Subjected to Fatigue Damage written by and published by . This book was released on 1995 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this study was to develop a method for evaluating the status of electrical conductors subjected to fatigue damage and to estimate their residual life. The proposed method is based on the correlation between the loss of ductility of the material subjected to cyclic loading and the fatigue-consumed life fraction. The approach put forward to confirm this correlation comprises four consecutive steps: determination of the tensile ductility of the conductor strands before the damage occurs; establishment of the fatigue curve of the strand; fatigue tests on the strands at different fractions of fatigue life; and determination of the residual tensile ductility of the tested strands. This paper presents the results of the study test program, performed on steel and aluminum strands of an ACSR 26/7 conductor. The end product of the study is a diagram containing all the necessary elements for estimating the residual life of conductors stressed by fatigue loading.

Download or read book Energy Research Abstracts written by and published by . This book was released on 1994-05 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Standardization of Fretting Fatigue Test Methods and Equipment written by Mahmoud Helmi Attia and published by ASTM International. This book was released on 1992 with total page 275 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Fretting Wear and Fretting Fatigue written by Tomasz Liskiewicz and published by Elsevier. This book was released on 2022-12-07 with total page 656 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fretting Wear and Fretting Fatigue: Fundamental Principles and Applications takes a combined mechanics and materials approach, providing readers with a fundamental understanding of fretting phenomena, related modeling and experimentation techniques, methods for mitigation, and robust examples of practical applications across an array of engineering disciplines. Sections cover the underpinning theories of fretting wear and fretting fatigue, delve into experimentation and modeling methods, and cover a broad array of applications of fretting fatigue and fretting wear, looking at its impacts in medical implants, suspension ropes, bearings, heating exchangers, electrical connectors, and more. - Covers theoretical fundamentals, modeling and experimentation techniques, and applications of fretting wear and fatigue - Takes a combined mechanics and materials approach - Discusses the differences and similarities between fretting wear and fretting fatigue as well as combined experimental and modeling methods - Covers applications including medical implants, heat exchangers, bearings, automotive components, gas turbines, and more

Download or read book Unified Notch strength Analysis for Wrought Aluminum Alloys written by Paul Kuhn and published by . This book was released on 1962 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Effect of Suspension Clamp Design on Conductor Fatigue Life written by Canadian Electrical Association. Research and Development and published by . This book was released on 1988 with total page 49 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Flexible Pipelines and Power Cables written by Yong Bai and published by John Wiley & Sons. This book was released on 2024-05-15 with total page 788 pages. Available in PDF, EPUB and Kindle. Book excerpt: FLEXIBLE PIPELINES AND POWER CABLES Pipelines are an important part of the world’s energy infrastructure, and, without them, oil and gas, the most commonly used sources for energy today, would not be available to much of the world’s countries. New theories and designs are constantly being researched and developed by scientists and engineers, to continue improving this technology and making it safer and more economical. The technology, processes, materials, and theories surrounding pipeline construction, application, and troubleshooting are constantly changing, and this groundbreaking series, “Advances in Pipes and Pipelines,” has been created to meet the needs of engineers and scientists to keep them up to date and informed of all of these advances. This latest volume in the series focuses on flexible pipelines and power cables, offering the engineer the most thorough coverage of the state of the art available. The authors of this work have written numerous books and papers on these subjects and are some of the most influential authors on flexible pipes in the world, contributing much of the literature on this subject to the industry. This new volume is a presentation of some of the most cutting-edge technological advances in technical publishing. This is the most comprehensive and in-depth series on pipelines, covering not just the various materials and their aspects that make them different, but every process that goes into their installation, operation, and design. This is the future of pipelines, and it is an important breakthrough. A must-have for the veteran engineer and student alike, this volume is an important new advancement in the energy industry, a strong link in the chain of the world’s energy production.

Download or read book Computational Modeling for Stress Analysis of Overhead Transmission Line Stranded Conductors Under Design and Fretting Fatigue Conditions written by Gang Qi and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: "While great efforts have been made in the electrical utility industry to engineer various stranded conductors with enhanced strength and vibrational characteristics, research devoted to understanding the complex mechanical behavior of complete conductors has been scarce, especially from a computational mechanics perspective. In the meanwhile, the long-lasting problem of conductor fretting fatigue becomes increasingly critical for overhead line design and maintenance, especially with the world-wide aging of electrical transmission grids. Aging of conductors contributes to significant degradation of their local fatigue strength, leading to drastic reduction of their service life.

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1985 with total page 1148 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Overhead Power Lines written by Friedrich Kiessling and published by Springer. This book was released on 2014-07-11 with total page 776 pages. Available in PDF, EPUB and Kindle. Book excerpt: The only book containing a complete treatment on the construction of electric power lines. Reflecting the changing economic and technical environment of the industry, this publication introduces beginners to the full range of relevant topics of line design and implementation.

Download or read book Fatigue Testing and Analysis written by Yung-Li Lee and published by Elsevier. This book was released on 2011-04-18 with total page 417 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fatigue Testing and Analysis: Theory and Practice presents the latest, proven techniques for fatigue data acquisition, data analysis, and test planning and practice. More specifically, it covers the most comprehensive methods to capture the component load, to characterize the scatter of product fatigue resistance and loading, to perform the fatigue damage assessment of a product, and to develop an accelerated life test plan for reliability target demonstration. This book is most useful for test and design engineers in the ground vehicle industry. Fatigue Testing and Analysis introduces the methods to account for variability of loads and statistical fatigue properties that are useful for further probabilistic fatigue analysis. The text incorporates and demonstrates approaches that account for randomness of loading and materials, and covers the applications and demonstrations of both linear and double-linear damage rules. The reader will benefit from summaries of load transducer designs and data acquisition techniques, applications of both linear and non-linear damage rules and methods, and techniques to determine the statistical fatigue properties for the nominal stress-life and the local strain-life methods. - Covers the useful techniques for component load measurement and data acquisition, fatigue properties determination, fatigue analysis, and accelerated life test criteria development, and, most importantly, test plans for reliability demonstrations - Written from a practical point of view, based on the authors' industrial and academic experience in automotive engineering design - Extensive practical examples are used to illustrate the main concepts in all chapters

Download or read book The Shock and Vibration Digest written by and published by . This book was released on 1985 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt: