Download or read book Estimation of Fatigue Crack Propagation Life in Butt Weldments written by F. V. Lawrence and published by . This book was released on 1972 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: A method for calculating the fatigue crack propagation portion of the fatigue life of welds initiating fatigue failure at the toe of the weld is presented.
Download or read book Estimation of Fatigue Crack Propagation Life in Butt Weldment written by Frederick VanBuren Lawrence and published by . This book was released on 1972 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fatigue and Fracture of Weldments written by Uwe Zerbst and published by Springer. This book was released on 2018-12-11 with total page 157 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a comprehensive and thorough guide to those readers who are lost in the often-confusing context of weld fatigue. It presents straightforward information on the fracture mechanics and material background of weld fatigue, starting with fatigue crack initiation and short cracks, before moving on to long cracks, crack closure, crack growth and threshold, residual stress, stress concentration, the stress intensity factor, J-integral, multiple cracks, weld geometries and defects, microstructural parameters including HAZ, and cyclic stress-strain behavior. The book treats all of these essential and mutually interacting parameters using a unique form of analysis.
Download or read book Estimating the Fatigue Crack Initiation Life of Welds written by JD. Burk and published by . This book was released on 1978 with total page 25 pages. Available in PDF, EPUB and Kindle. Book excerpt: The fatigue crack initiation life (cycles to obtain a 0.25-mm fatigue crack) was estimated for butt welds using strain-controlled fatigue concepts. Key developments which facilitated these estimates were the assumption of ??(Kf)max conditions (the largest value of ??Kf possible for a given weld shape), the use of computer simulation methods which modeled cyclic hardening and softening as well as mean stress relaxation effects, and the use of the fatigue properties of the actual weld zone in which the initial notch was located. The initiation life was found to be very sensitive to changes in ??Kf, but rather insensitive to strength level. The importance of residual stresses and mean stress varied with material as did the fraction of total life devoted to crack initiation. Mild steel (ASTM Specification for Structural Steel (A 36)) high strength, low alloy (ASTM Specification for High-Yield Strength, Quenched and Tempered Alloy Steel Plate, Suitable for Welding (A 514)) steel and aluminum alloy welds were considered.
Download or read book Fatigue Assessment of Welded Joints by Local Approaches written by Dieter Radaj and published by Woodhead Publishing. This book was released on 1998 with total page 476 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fatigue Testing of Weldments written by D. W. Hoeppner and published by ASTM International. This book was released on 1978 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fatigue and Fracture Testing of Weldments written by Harry I. McHenry and published by ASTM International. This book was released on 1990 with total page 310 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fifteen papers from a symposium held in Sparks, Nev., April 1988. They cover: low and high cycle fatigue, fatigue crack growth, corrosion fatigue, fracture toughness testing, and wide-plate testing. Annotation copyright Book News, Inc. Portland, Or.
Download or read book Estimation of Fatigue Propagation Life in Resistance Spot Welds written by SD. Sheppard and published by . This book was released on 1993 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt: The main objective of this research is to develop a model of fatigue crack propagation in resistance spot welded joints. An important feature of this development is that the model should be usable by designers considering fatigue response of structures containing multiple welds. This objective is achieved by examining the stress state around a load bearing resistance spot weld. A general expression for the structural stress around the weld is formulated that is dependent only upon the loading immediately surrounding the weld and is therefore independent of specimen design.
Download or read book Fatigue Testing of Weldments written by David W. Hoeppner and published by ASTM International. This book was released on 1978 with total page 301 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fatigue Crack Propagation Life Predictions for Butt and Fillet Welds written by Frederick VanBuren Lawrence and published by . This book was released on 1974 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Metal Fatigue Analysis Handbook written by Yung-Li Lee and published by Elsevier. This book was released on 2011-10-06 with total page 633 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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
Download or read book Influence of Bending Stresses on the Fatigue Crack Propagation Life in Butt Welds written by J. D. Burk and published by . This book was released on 1976 with total page 29 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Model Analysis of Fatigue Life Estimation of Welded Structures microform written by Muhammad A. Wahab and published by National Library of Canada. This book was released on 1984 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study includes both an experimental and theoretical analysis of the effect of residual stresses on the fatigue life of butt-welded low-alloy steel structures. The purpose is to develop a more complete method to estimate the total fatigue life of a weldment. To theoretically calculate the total fatigue life the process was considered as a combination of crack initiation and crack propagation lives. The initiation portion was based on an extension of the local-strain fatigue life initiation model to accomodate the effect of residual and mean stresses. To determine the local notch-root stress-strain condition more accurately a relationship between the fatigue notch and stress concentration factors was developed. Using elastic superposition and modifying Neuber's equation, which relates nominal stress-strain to local notch-root stress-strain residual stresses at the weld-toe were simulated. This analysis allows a more complete estimation of crack initiation life. For the theoretical analysis of fatigue crack propagation life Forman's equation with an appropriate combination effective stress ratio, axial and bending stresses along with residual stress effects was considered. To incorporate the residual stress distribution at the weld-toe a theoretical expression which correlates closely with experimentally determined distributions was developed. Unlike previous investigations this analysis allows the study of the combined effects of axial loading, bending stresses and residual stresses on the fatigue crack propagation life to be considered. With this theoretical model the total fatigue life can be predicted using basic material properties and the loading history including any surface treatment. To test the suitability of this analysis it was applied to welds with mechanically and thermally induced surface stresses. The residual stresses due to various treatments (annealing, tensile preloading, glass and steel shot peening, single and multiple point hammer peening and stress peening) were used to theoretically predict the total fatigue life. The more complete theoretical analysis of the total fatigue life was compared to the experimental results for all the treated and untreated welded specimens. The results show very good agreement; the variations in applied stress for a given fatigue life were between four to 15% for all the treatments listed above.
Download or read book Fracture and Fatigue of Welded Joints and Structures written by K Macdonald and published by Elsevier. This book was released on 2011-04-19 with total page 353 pages. Available in PDF, EPUB and Kindle. Book excerpt: The failure of any welded joint is at best inconvenient and at worst can lead to catastrophic accidents. Fracture and fatigue of welded joints and structures analyses the processes and causes of fracture and fatigue, focusing on how the failure of welded joints and structures can be predicted and minimised in the design process. Part one concentrates on analysing fracture of welded joints and structures, with chapters on constraint-based fracture mechanics for predicting joint failure, fracture assessment methods and the use of fracture mechanics in the fatigue analysis of welded joints. In part two, the emphasis shifts to fatigue, and chapters focus on a variety of aspects of fatigue analysis including assessment of local stresses in welded joints, fatigue design rules for welded structures, k-nodes for offshore structures and modelling residual stresses in predicting the service life of structures. With its distinguished editor and international team of contributors, Fracture and fatigue of welded joints and structures is an essential reference for mechanical, structural and welding engineers, as well as those in the academic sector with a research interest in the field. Analyses the processes and causes of fracture and fatigue, focusing predicting and minimising the failure of welded joints in the design process Assesses the fracture of welded joints and structure featuring constraint-based fracture mechanics for predicting joint failure Explores specific considerations in fatigue analysis including the assessment of local stresses in welded joints and fatigue design rules for welded structures
Download or read book Fatigue Assessment of Welded Joints by Local Approaches written by Dieter Radaj and published by Woodhead Publishing. This book was released on 2006-10-30 with total page 661 pages. Available in PDF, EPUB and Kindle. Book excerpt: Local approaches to fatigue assessment are used to predict the structural durability of welded joints, to optimise their design and to evaluate unforeseen joint failures. This standard work provides a systematic survey of the principles and practical applications of the various methods. It covers the hot spot structural stress approach to fatigue in general, the notch stress and notch strain approach to crack initiation and the fracture mechanics approach to crack propagation. Seam-welded and spot-welded joints in structural steels and aluminium alloys are also considered.This completely reworked second edition takes into account the tremendous progress in understanding and applying local approaches which has been achieved in the last decade. It is a standard reference for designers, structural analysts and testing engineers who are responsible for the fatigue-resistant in-service behaviour of welded structures. Completely reworked second edition of a standard work providing a systematic survey of the principles and practical applications of the various methods Covers the hot spot structural stress approach to fatigue in general, the notch stress and notch strain approach to crack initiation and the fracture mechanics approach to crack propagation. Written by a distinguished team of authors
Download or read book Fracture Mechanics 2 written by Ammar Grous and published by John Wiley & Sons. This book was released on 2013-02-05 with total page 279 pages. Available in PDF, EPUB and Kindle. Book excerpt: This second book of a 3-volume set on Fracture Mechanics completes the first volume through the analysis of adjustment tests suited to correctly validating the justified use of the laws conforming to the behavior of the materials and structures under study. This volume focuses on the vast range of statistical distributions encountered in reliability. Its aim is to run statistical measurements, to present a report on enhanced measures in mechanical reliability and to evaluate the reliability of repairable or unrepairable systems. To achieve this, the author presents a theoretical and practice-based approach on the following themes: criteria of failures; Bayesian applied probability; Markov chains; Monte Carlo simulation as well as many other solved case studies. This book distinguishes itself from other works in the field through its originality in presenting an educational approach which aims at helping practitioners both in academia and industry. It is intended for technicians, engineers, designers, students, and teachers working in the fields of engineering and vocational education. The main objective of the author is to provide an assessment of indicators of quality and reliability to aid in decision-making. To this end, an intuitive and practical approach, based on mathematical rigor, is recommended.
Download or read book Life Assessment of Dynamically Loaded Materials and Structures written by L. O. Faria and published by . This book was released on 1985 with total page 564 pages. Available in PDF, EPUB and Kindle. Book excerpt:
