Metal Additive Manufacturing Defects Analysis And Prediction Of Their Effect On Fatigue Performance
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Metal Additive Manufacturing Defects Analysis And Prediction Of Their Effect On Fatigue Performance
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Author : Niloofar Sanaei
language : en
Publisher:
Release Date : 2020
Metal Additive Manufacturing Defects Analysis And Prediction Of Their Effect On Fatigue Performance written by Niloofar Sanaei and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020 with Additive manufacturing categories.
The technology of additive manufacturing (AM) which is building up parts by joining materials directly informed by 3D model data, is developing rapidly in many industries. It offers advantages such as delivering intricate and complex geometries with the least post processing required. The components made by AM are of interest in biomedical and aerospace applications. AM technologies should produce unique critical parts, such as prosthetics which undergo cyclic loading throughout their service life. Therefore, understanding fatigue behavior of AM metals is one of the most important steps in their part design. In addition, in many applications, the loading condition is multiaxial. Even in parts under uniaxial loading condition, the stress state may still be a combination of axial and shear stress due to complex geometry or interaction of residual stresses and existence of defects. The intrinsic defects of AM metals and the effect of process and post processing parameters on them were investigated in this study. The microstructure and defect content of AM metals and their correlation with fatigue performance were reviewed. The objective was to analyze characteristics of intrinsic AM defects and their variability for various materials, processing and post-processing conditions. The aim was also to evaluate the fatigue behavior of the defective AM metals, develop an appropriate defect sensitive fatigue life prediction framework, and verify the predictions with experimental data. Fracture Mechanics concepts along with phenomenological, empirical, and semi-empirical models such as Murakami's area parameter were applied. Comprehensive defect analysis and fracture surface analysis were performed in 2D by digital microscopy and scanning electron microscopy and in 3D using X-ray computed tomography. Important surface and internal defect characteristics such as size, shape (aspect ratio), location, and orientation, the material microstructure, and the loading and failure mechanism for each batch of specimens were investigated. The key factors were incorporated into fatigue life predictions with appropriate representations. Statistical functions to model the distribution of the defect characteristics, and Extreme Value Statistics (EVS) concepts to compute a prospective maximum defect size were used for fatigue life prediction. Based on the failure analysis, for tensile failure dominated specimens Maximum Principle Stress (MPS) and for shear failure dominated specimens Fatemi-Socie (FS) parameter were used to calculate the stress intensity factor range for defect-based uniaxial and multiaxial fatigue life predictions. The fracture mechanics-based framework could successfully be used for fatigue life prediction of AM metals based on their defect content.
Quality Analysis Of Additively Manufactured Metals
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Author : Javad Kadkhodapour
language : en
Publisher: Elsevier
Release Date : 2022-11-30
Quality Analysis Of Additively Manufactured Metals written by Javad Kadkhodapour and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-11-30 with Technology & Engineering categories.
Quality Analysis of Additively Manufactured Metals: Simulation Approaches, Processes, and Microstructure Properties provides readers with a firm understanding of the failure and fatigue processes of additively manufactured metals. With a focus on computational methods, the book analyzes the process-microstructure-property relationship of these metals and how it affects their quality while also providing numerical, analytical, and experimental data for material design and investigation optimization. It outlines basic additive manufacturing processes for metals, strategies for modeling the microstructural features of metals and how these features differ based on the manufacturing process, and more.Improvement of additively manufactured metals through predictive simulation methods and microdamage and micro-failure in quasi-static and cyclic loading scenarios are covered, as are topology optimization methods and residual stress analysis techniques. The book concludes with a section featuring case studies looking at additively manufactured metals in automotive, biomedical and aerospace settings. Provides insights and outlines techniques for analyzing why additively manufactured metals fail and strategies for avoiding those failures Defines key terms and concepts related to the failure analysis, quality assurance and optimization processes of additively manufactured metals Includes simulation results, experimental data and case studies
Structural Integrity And Fatigue Failure Analysis
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Author : Grzegorz Lesiuk
language : en
Publisher: Springer Nature
Release Date : 2022-05-04
Structural Integrity And Fatigue Failure Analysis written by Grzegorz Lesiuk and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-05-04 with Technology & Engineering categories.
This book contains full papers presented at the First Virtual Conference on Mechanical Fatigue (VCMF 2020), which was organised by the University of Porto (FEUP, Portugal), the Wroclaw University of Science and Technology (Poland), University of Electronic Science and Technology of China (China), Siberian Federal University (Russia), and the ESIS/TC12 Technical Committee (European Structural Integrity Society–ESIS), between 9 and 11 of September 2020. This conference was intended to be a forum of discussion of new research concepts, equipment, technology, materials and structures and other scientific advances within the field of mechanical fatigue and fracture. The first edition of the VCMF 2020 event has reached more than 60 participants from more than 20 nationalities demonstrating the vitality of this new event.
Fatigue In Additive Manufactured Metals
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Author : Filippo Berto
language : en
Publisher: Elsevier
Release Date : 2023-10-01
Fatigue In Additive Manufactured Metals written by Filippo Berto and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2023-10-01 with Technology & Engineering categories.
Fatigue in Additive Manufactured Metals provides a brief overview of the fundamental mechanics involved in metal fatigue and fracture, assesses the unique properties of additive manufactured metals, and provides an in-depth exploration of how and why fatigue occurs in additive manufactured metals. Additional sections cover solutions for preventing it, best-practice design methods, and more. The book recommends cutting-edge evidence-based approaches for designing longer lasting additive manufactured metals, discusses the latest trends in the field and the various aspects of low cycle fatigue, and looks at both post-treatment and manufacturing process-based solutions. By providing international standards and testing procedures of additive manufactured metal parts and discussing the environmental impacts of additive manufacturing of metals and outlining simulation and modeling scenarios, this book is an ideal resource for users in industry. Discusses the underlying mechanisms controlling the fatigue behavior of additive manufactured metal components as well as how to improve the fatigue life of these components via both manufacturing processes and post-processing Studies the variability of properties in additive manufactured metals, the effects of different process conditions on mechanical reliability, probabilistic versus deterministic aspects, and more Outlines nondestructive failure analysis techniques and highlights the effects of unique microstructural characteristics on fatigue in additive manufactured metals
Reliability Of Selective Laser Melted Alsi12 Alloy For Quasistatic And Fatigue Applications
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Author : Shafaqat Siddique
language : en
Publisher: Springer
Release Date : 2018-09-18
Reliability Of Selective Laser Melted Alsi12 Alloy For Quasistatic And Fatigue Applications written by Shafaqat Siddique and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-09-18 with Technology & Engineering categories.
Selective laser melting (SLM) has established itself as the most prominent additive manufacturing (AM) process for metallic structures in aerospace, automotive and medical industries. For a reliable employment of this process, it has to conform to the demanding requirements of these industries in terms of quasistatic and, especially, fatigue performance. Shafaqat Siddique identifies the influence of SLM processing conditions on the microstructural features, and their corresponding influence on the mechanical behavior of the processed AlSi12 alloy structures. The author also gives insight into integrated manufacturing by combining conventional and SLM processes to get the synergic benefits. Requirements for fatigue-resistant designs in additive manufacturing are highlighted, and a novel method is developed for agile fatigue life prediction. About the Author Shafaqat Siddique worked as Scientific Assistant at TU Dortmund University, Department of Materials Test Engineering (WPT), headed by Prof. Dr.-Ing. Frank Walther, and completed his Ph.D. research in cooperation with Laser Zentrum Nord (LZN) in Hamburg. He continues his post-doctoral research at TU Dortmund University, Germany.
Fundamentals Of Laser Powder Bed Fusion Of Metals
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Author : Igor Yadroitsev
language : en
Publisher: Elsevier
Release Date : 2021-05-23
Fundamentals Of Laser Powder Bed Fusion Of Metals written by Igor Yadroitsev and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-05-23 with Technology & Engineering categories.
Laser powder bed fusion of metals is a technology that makes use of a laser beam to selectively melt metal powder layer-by-layer in order to fabricate complex geometries in high performance materials. The technology is currently transforming aerospace and biomedical manufacturing and its adoption is widening into other industries as well, including automotive, energy, and traditional manufacturing. With an increase in design freedom brought to bear by additive manufacturing, new opportunities are emerging for designs not possible previously and in material systems that now provide sufficient performance to be qualified in end-use mission-critical applications. After decades of research and development, laser powder bed fusion is now enabling a new era of digitally driven manufacturing. Fundamentals of Laser Powder Bed Fusion of Metals will provide the fundamental principles in a broad range of topics relating to metal laser powder bed fusion. The target audience includes new users, focusing on graduate and undergraduate students; however, this book can also serve as a reference for experienced users as well, including senior researchers and engineers in industry. The current best practices are discussed in detail, as well as the limitations, challenges, and potential research and commercial opportunities moving forward. Presents laser powder bed fusion fundamentals, as well as their inherent challenges Provides an up-to-date summary of this advancing technology and its potential Provides a comprehensive textbook for universities, as well as a reference for industry Acts as quick-reference guide
Machine Learning Algorithm For Fatigue Fields In Additive Manufacturing
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Author : Mustafa Mamduh Mustafa Awd
language : en
Publisher: Springer Nature
Release Date : 2023-01-01
Machine Learning Algorithm For Fatigue Fields In Additive Manufacturing written by Mustafa Mamduh Mustafa Awd and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2023-01-01 with Computers categories.
Fatigue failure of structures used in transportation, industry, medical equipment, and electronic components needs to build a link between cutting-edge experimental characterization and probabilistically grounded numerical and artificially intelligent tools. The physics involved in this process chain is computationally prohibitive to comprehend using traditional computation methods. Using machine learning and Bayesian statistics, a defect-correlated estimate of fatigue strength was developed. Fatigue, which is a random variable, is studied in a Bayesian-based machine learning algorithm. The stress-life model was used based on the compatibility condition of life and load distributions. The defect-correlated assessment of fatigue strength was established using the proposed machine learning and Bayesian statistics algorithms. It enabled the mapping of structural and process-induced fatigue characteristics into a geometry-independent load density chart across a wide range of fatigue regimes.
Lectures Notes On Advanced Structured Materials 2
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Author : Holm Altenbach
language : en
Publisher: Springer Nature
Release Date :
Lectures Notes On Advanced Structured Materials 2 written by Holm Altenbach and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on with categories.
Smart Sustainable Manufacturing In An Ever Changing World
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Author : Konrad von Leipzig
language : en
Publisher: Springer Nature
Release Date : 2023-03-03
Smart Sustainable Manufacturing In An Ever Changing World written by Konrad von Leipzig and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2023-03-03 with Business & Economics categories.
This book presents recent developments, research results, and industrial experience to increase the knowledge base of academics and industry. In a small world where trade is the new global driving force conquering countries and continents alike, international competitiveness is becoming the ultimate challenge. It requires high-quality products manufactured with state-of-the-art technologies at low cost under the assumption of highly efficient operations management as well as clear corporate goals and strategy. This in turn is based on improved engineering training and education, relevant applied research, and an active interaction between academia and industry.
Wire Arc Additive Manufacturing
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Author : Sandeep Rathee
language : en
Publisher: CRC Press
Release Date : 2024-02-13
Wire Arc Additive Manufacturing written by Sandeep Rathee and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2024-02-13 with Technology & Engineering categories.
This book presents wire arc additive manufacturing (WAAM), its variants, processing steps, and the mechanical and microstructural aspects of developed components, along with a logical sequence that provides a ready reference. Wire Arc Additive Manufacturing: Fundamental Sciences and Advances introduces the timeline and history of WAAM. It offers a critical review of WAAM, its variants, processing steps, and the mechanical and microstructural aspects of developed components. The book showcases the methods and practices that need to be followed to synchronise WAAM with other conventional metal additive manufacturing, as well as other conventional techniques. The process steps, equipment, and the different materials used are discussed in detail, along with the various process parameters and their optimisation to counter the challenges and defects. Applications, trends, and case studies are also included in the book. This book, aimed at providing a concrete reference for researchers, academics, and professionals, allows for a thorough understanding of the different concepts and intricacies of WAAM.