Advanced Methods of Fatigue Assessment

Author: Dieter Radaj
Publisher: Springer Science & Business Media
ISBN: 364230740X
Format: PDF, ePub
Download Now
In five chapters, this volume presents recent developments in fatigue assessment. In the first chapter, a generalized Neuber concept of fictitious notch rounding is presented where the microstructural support factors depend on the notch opening angle besides the loading mode. The second chapter specifies the notch stress factor including the strain energy density and J-integral concept while the SED approach is applied to common fillet welded joints and to thin-sheet lap welded joints in the third chapter. The forth chapter analyses elastic-plastic deformations in the near crack tip zone and discusses driving force parameters. The last chapter discusses thermomechanical fatigue, stress, and strain ranges.

Fatigue Assessment of Welded Joints by Local Approaches

Author: Dieter Radaj
Publisher: Woodhead Publishing
ISBN: 9781855734036
Format: PDF, Mobi
Download Now
This book reviews the available knowledge on local approaches to fatigue assessment of welded joints, gathers the data necessary for their practical application and demonstrates the power of the local concept by way of demonstration examples from research and industry. 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 considered. The book is intended for designers, structural analysts and testing engineers who are responsible for the fatigue-resistant in-service behaviour of welded structures. It should become a reference work for researchers in the field and should support activities directed to standardisation of local approaches.

Fatigue Testing and Analysis

Author: Yung-Li Lee
Publisher: Elsevier
ISBN: 0080477690
Format: PDF, Kindle
Download Now
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

Advanced Methods of Biomedical Signal Processing

Author: Sergio Cerutti
Publisher: John Wiley & Sons
ISBN: 9781118007730
Format: PDF, Kindle
Download Now
This book grew out of the IEEE-EMBS Summer Schools on Biomedical Signal Processing, which have been held annually since 2002 to provide the participants state-of-the-art knowledge on emerging areas in biomedical engineering. Prominent experts in the areas of biomedical signal processing, biomedical data treatment, medicine, signal processing, system biology, and applied physiology introduce novel techniques and algorithms as well as their clinical or physiological applications. The book provides an overview of a compelling group of advanced biomedical signal processing techniques, such as multisource and multiscale integration of information for physiology and clinical decision; the impact of advanced methods of signal processing in cardiology and neurology; the integration of signal processing methods with a modelling approach; complexity measurement from biomedical signals; higher order analysis in biomedical signals; advanced methods of signal and data processing in genomics and proteomics; and classification and parameter enhancement.

Fatigue Design of Marine Structures

Author: Inge Lotsberg
Publisher: Cambridge University Press
ISBN: 1107121337
Format: PDF
Download Now
This is a theoretical and practical guide for fatigue design of marine structures including sailing ships and offshore oil structures.

NDT Methods Applied to Fatigue Reliability Assessment of Structures

Author: Jamshid Mohammadi
Publisher: ASCE Publications
ISBN: 9780784407424
Format: PDF, Kindle
Download Now
Sponsored by the Fatigue and Fracture Reliability Committee of the Structural Engineering Institute of ASCE. This report contains nine specific-application cases of various nondestructive test (NDT) methods in fatigue and fracture reliability assessment of structures. The collection is useful in learning about areas where current methods have actually been applied in real world applications. Cases examine problems such as steel girder bridges, airframe systems, welded connections, and bridge components (including concrete slabs), which were subjected to fracture failure. The report includes such NDT methods as: structural monitoring; use of various methods for the identification of the extent of damage; acoustic emissions technique; electromagnetic; portable hardness test; liquid penetrant; magnetic particle; radiography; residual stress by hole drill; and ultrasonic methods. The fatigue reliability assessment methods discussed in this book will be especially useful to practitioners, educators, and students in structural engineering.

IIW Recommendations for the Fatigue Assessment of Welded Structures By Notch Stress Analysis

Author: W Fricke
Publisher: Woodhead Publishing
ISBN: 085709856X
Format: PDF
Download Now
The notch stress approach for fatigue assessment of welded joints is based on the highest elastic stress at the weld toe or root. In order to avoid arbitrary or infinite stress results, a rounded shape with a reference radius instead of the actual sharp toe or root is usually assumed. IIW recommendations for the fatigue assessment of welded structures by notch stress analysis reviews different proposals for reference radii together with associated S-N curves. Detailed recommendations are given for the numerical analysis of notch stress by the finite or boundary element method. Several aspects are discussed, such as the structural weakening by keyhole-shaped notches and the consideration of multiaxial stress states. Appropriate S-N curves are presented for the assessment of the fatigue strength of different materials. Finally, four examples illustrate the application of the approach as well as the variety of structures which can be analysed and the range of results that can be obtained from different models. Provides detailed recommendations for the number analysis of notch stress by the finite or boundary element method Discusses structural weakening by keyhole-shaped notches and the consideration of multiaxial stress states Provides four comprehensive examples, illustrating the variety of structures which can be analysed and the range of results that can be obtained from different models

Applied Mechanics Behavior of Materials and Engineering Systems

Author: Taoufik Boukharouba
Publisher: Springer
ISBN: 3319414682
Format: PDF
Download Now
This book covers a variety of topics in mechanics, with a special emphasis on material mechanics. It reports on fracture mechanics, fatigue of materials, stress-strain behaviours, as well as transferability problems and constraint effects in fracture mechanics. It covers different kind of materials, from metallic materials such as ferritic and austenitic steels, to composites, concrete, polymers and nanomaterials. Additional topics include heat transfer, quality control and reliability of structures and components. Furthermore, the book gives particular attention to new welding technologies such as STIR welding and spray metal coating, and to novel methods for quality control, such as Taguchi design, fault diagnosis and wavelet analysis. Based on the 2015 edition of the Algerian Congress of Mechanics (Congrès Algérien de Mécanique, CAM), the book also covers energetics, in terms of simulation of turbulent reactive flow, behaviour of supersonic jet, turbulent combustion, fire induced smoke layer, and heat and mass transfer, as well as important concepts related to human reliability and safety of components and structures. All in all, the book represents a complete, practice-oriented reference guide for both academic and professionals in the field of mechanics.