Experimental Investigation Of Crack Initiation In Face Centered Cubic Materials In The High And Very High Cycle Fatigue Regime
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Experimental Investigation Of Crack Initiation In Face Centered Cubic Materials In The High And Very High Cycle Fatigue Regime
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Author : Straub, Thomas
language : en
Publisher: KIT Scientific Publishing
Release Date : 2016
Experimental Investigation Of Crack Initiation In Face Centered Cubic Materials In The High And Very High Cycle Fatigue Regime written by Straub, Thomas and has been published by KIT Scientific Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016 with Technology (General) categories.
This book investigates the fatigue mechanisms and crack initiation of Ni, Al and Cu on a small-scale in the Very High Cycle Fatigue regime by means of innovative fatigue experimentation. A novel custom-built resonant fatigue setup showed that the sample resonant frequency changes with increasing cycle number due to fatigue damage. Mechanisms such as slip band formation have been observed. Cyclic hardening, vacancy and oxidation formation may be considered as early fatigue mechanisms.
Safe Supportive And Inclusive Learning Environments For Young People In Crisis And Trauma
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Author : Patty Towl
language : en
Publisher: Routledge
Release Date : 2020-06-02
Safe Supportive And Inclusive Learning Environments For Young People In Crisis And Trauma written by Patty Towl and has been published by Routledge this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-06-02 with Education categories.
Children and young people from diverse populations are statistically more at risk of exclusion, however education providers can make a difference to all children and young persons’ learning outcomes no matter what their personal circumstances. To achieve this, not only must educators form closer and more authentic relationships with these children and their communities, but the governments that fund learning environments must also be prepared to provide adequate resourcing and training opportunities. Safe, Supportive, and Inclusive Learning Environments for Young People in Crisis and Trauma addresses both the general and specific issues that may prevent children and young people from diverse populations from being safe, supported, and included in learning environments. Some chapters focus on general factors that contribute to both inclusion and exclusion at early childhood and in formal school environments, while others present research-based best practice and practical advice to enable good education outcomes for indigenous, migrant, and LGBTQI children and those who experience mental health problems, drug misuse, and abuse. Lastly, the book includes information about how to negotiate and set up programmes that have been shown to be effective with communities that differ from the dominant culture. This book provides practitioners in education, health, and social work with information and practical advice on how to retain all children and young people in early childhood, formal school education, and tertiary settings.
Fatigue Of Materials At Very High Numbers Of Loading Cycles
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Author : Hans-Jürgen Christ
language : en
Publisher: Springer
Release Date : 2018-11-19
Fatigue Of Materials At Very High Numbers Of Loading Cycles written by Hans-Jürgen Christ and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-11-19 with Technology & Engineering categories.
This book represents the final reports of the scientific projects funded within the DFG-SPP1466 and, hence, provides the reader with the possibility to familiarize with the leading edge of VHCF research. It draws a balance on the existing knowledge and its enhancement by the joint research action of the priority program. Three different material classes are dealt with: structural metallic materials, long-fiber-reinforced polymers and materials used in micro-electro-mechanical systems. The project topics address the development of suitable experimental techniques for high-frequency testing and damage monitoring, the characterization of damage mechanisms and damage evolution, the development of mechanism-based models and the transfer of the obtained knowledge and understanding into engineering regulations and applications.
A Novel Micro Mechanical Model For Prediction Of Multiaxial High Cycle Fatigue At Small Scales
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Author : Eslami, Reza
language : en
Publisher: KIT Scientific Publishing
Release Date : 2017-05-03
A Novel Micro Mechanical Model For Prediction Of Multiaxial High Cycle Fatigue At Small Scales written by Eslami, Reza and has been published by KIT Scientific Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-05-03 with Technology (General) categories.
The grain microstructure and damage mechanisms at the grain level are the key factors that influence fatigue of metals at small scales. This is addressed in this work by establishing a new micro-mechanical model for prediction of multiaxial high cycle fatigue (HCF) at a length scale of 5-100?m. The HCF model considers elasto-plastic behavior of metals at the grain level and microstructural parameters, specifically the grain size and the grain orientation.
Microplasticity Of Idealized Single Crystalline Ag Cantilevers Characterized With Methods Of High Resolution
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Author : Wobrock, Mark
language : en
Publisher: KIT Scientific Publishing
Release Date : 2017-11-22
Microplasticity Of Idealized Single Crystalline Ag Cantilevers Characterized With Methods Of High Resolution written by Wobrock, Mark and has been published by KIT Scientific Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-11-22 with Diffraction categories.
Single crystalline, μm-sized cantilevers are fabricated out of epitaxially grown Ag thin films by a lithography-based procedure and are deflected by a nanoindenter system. The microstructure of the plastically deformed cantile-vers is investigated using transmission Kikuchi diffraction (TKD) on the cantilever cross section. 3D discrete dislocation dynamics simulations (DDD) are performed for further analysis. A mechanism to explain the formation of dislocation networks upon loading is suggested.
Micromechanical Study On The Deformation Behaviour Of Directionally Solidified Nial Cr Eutectic Composites
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Author : Kumar, Amritesh
language : en
Publisher: KIT Scientific Publishing
Release Date : 2017-11-06
Micromechanical Study On The Deformation Behaviour Of Directionally Solidified Nial Cr Eutectic Composites written by Kumar, Amritesh and has been published by KIT Scientific Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-11-06 with categories.
Multiscale Modeling Of Curing And Crack Propagation In Fiber Reinforced Thermosets
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Author : Schöller, Lukas
language : en
Publisher: KIT Scientific Publishing
Release Date : 2024-03-15
Multiscale Modeling Of Curing And Crack Propagation In Fiber Reinforced Thermosets written by Schöller, Lukas and has been published by KIT Scientific Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2024-03-15 with categories.
During the production of fiber-reinforced thermosets, the resin material undergoes a reaction that can lead to damage. A two-stage polymerization reaction is modeled using molecular dynamics and evaluations of the system including a fiber surface are performed. In addition, a phase-field model for crack propagation in heterogeneous systems is derived. This model is able to predict crack growth where established models fail. Finally, the model is used to predict crack formation during curing.
Phase Field Modeling Of Phase Changes And Mechanical Stresses In Electrode Particles Of Secondary Batteries
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Author : Zhang, Tao
language : en
Publisher: KIT Scientific Publishing
Release Date : 2021-09-27
Phase Field Modeling Of Phase Changes And Mechanical Stresses In Electrode Particles Of Secondary Batteries written by Zhang, Tao and has been published by KIT Scientific Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-09-27 with Technology & Engineering categories.
Most storage materials exhibit phase changes, which cause stresses and, thus, lead to damage of the electrode particles. In this work, a phase-field model for the cathode material NaxFePO4 of Na-ion batteries is studied to understand phase changes and stress evolution. Furthermore, we study the particle size and SOC dependent miscibility gap of the nanoscale insertion materials. Finally, we introduce the nonlocal species concentration theory, and show how the nonlocality influences the results.
Characterization And Modeling Of The Ratcheting Behavior Of The Ferritic Martensitic Steel P91
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Author : Zhang, Kuo
language : en
Publisher: KIT Scientific Publishing
Release Date : 2017-07-12
Characterization And Modeling Of The Ratcheting Behavior Of The Ferritic Martensitic Steel P91 written by Zhang, Kuo and has been published by KIT Scientific Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-07-12 with Technology (General) categories.
In this work, the ratcheting-behavior of 9%Cr-1%Mo ferritic-martensitic steel is studied with uniaxial cyclic loading. To describe the ratcheting-behavior of this steel, a visco-plastic constitutive model with consideration of cyclic softening of Reduced Activation Ferritic Martensitic steels is further modified, based on the analysis of back stress.
Application Of Data Mining And Machine Learning Methods To Industrial Heat Treatment Processes For Hardness Prediction
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Author : Lingelbach, Yannick
language : en
Publisher: KIT Scientific Publishing
Release Date : 2024-07-24
Application Of Data Mining And Machine Learning Methods To Industrial Heat Treatment Processes For Hardness Prediction written by Lingelbach, Yannick and has been published by KIT Scientific Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2024-07-24 with categories.
This work presents a data mining framework applied to industrial heattreatment (bainitization and case hardening) aiming to optimize processes and reduce costs. The framework analyses factors such as material, production line, and quality assessment for preprocessing, feature extraction, and drift corrections. Machine learning is employed to devise robust prediction strategies for hardness. Its implementation in an industry pilot demonstrates the economic benefits of the framework. - This work presents a data mining framework applied to industrial heattreatment (bainitization and case hardening) aiming to optimize processes and reduce costs. The framework analyses factors such as material, production line, and quality assessment for preprocessing, feature extraction, and drift corrections. Machine learning is employed to devise robust prediction strategies for hardness. Its implementation in an industry pilot demonstrates the economic benefits of the framework.