Characterization And Modeling Of The Ratcheting Behavior Of The Ferritic Martensitic Steel P91
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| Author | : Zhang, Kuo |
| Publisher | : KIT Scientific Publishing |
| Total Pages | : 224 |
| Release | : 2017-07-12 |
| Genre | : Technology (General) |
| ISBN | : 3731505037 |
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.
| Author | : Kuo Zhang |
| Publisher | : |
| Total Pages | : 214 |
| Release | : 2020-10-09 |
| Genre | : Science |
| ISBN | : 9781013280313 |
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. This work was published by Saint Philip Street Press pursuant to a Creative Commons license permitting commercial use. All rights not granted by the work's license are retained by the author or authors.
| Author | : Ramesh Kumar Nayak |
| Publisher | : Springer Nature |
| Total Pages | : 995 |
| Release | : 2023-07-04 |
| Genre | : Technology & Engineering |
| ISBN | : 9819929210 |
This book presents the select proceedings of the 2nd International Conference on Advances in Materials and Manufacturing Technology (ICAMMT 2022). The book covers the latest trends in existing and new materials, manufacturing processes, evaluation of materials properties for the application in automotive, aerospace, marine, locomotive, automotive and energy sectors. The topics covered include advanced metal forming, bending, welding and casting techniques, recycling and re-manufacturing of materials and components, materials processing, characterization and applications, multi-physics coupling simulation, and optimization, alternate materials /material substitution, thermally-enhanced processes, and materials, composites and polymer manufacturing, powder metallurgy and ceramic forming, numerical modeling and simulation, advanced machining processes, functionally graded materials, non-destructive examination, optimization techniques, engineering materials, heat treatment, material testing, MEMS integration, energy materials, bio-materials, metamaterials, metallography, nanomaterial, SMART materials and super alloys. In addition, it discusses industrial applications and covers theoretical and analytical methods, numerical simulations and experimental techniques in the area of advanced materials and their applications. It also covers the application of artificial intelligence in advanced materials and manufacturing technology. The book will be a valuable reference for researchers and industry professionals alike.
| Author | : Röhe, Maximilian |
| Publisher | : KIT Scientific Publishing |
| Total Pages | : 178 |
| Release | : 2024-01-09 |
| Genre | : |
| ISBN | : 3731512343 |
In this work, the first simulation model of oxygen depolarized cathodes (ODC), which are silver catalyst-based gas diffusion electrodes, is presented that considers the phase equilibrium of the gas-liquid interface and structure-related inhomogeneities in electrolyte distribution. By means of the model it has been identified that mass transport of water and ions in the liquid phase is a crucial factor for electrode performance and how it is influenced by the electrode structure.
| Author | : Trauth, Anna |
| Publisher | : KIT Scientific Publishing |
| Total Pages | : 468 |
| Release | : 2020-12-11 |
| Genre | : Technology & Engineering |
| ISBN | : 3731509504 |
The main objective of this work is to significantly deepen the understanding of the material and the structural behaviour of continuous-discontinuous SMC composites, following a holistic approach to investigate microscopic aspects, macroscopic mechanical behaviour as well as failure evolution at the coupon, structure and component level. In addition, criteria to evaluate the effect of hybridisation are introduced and modelling approaches are presented and discussed.
| Author | : Birkholz, Oleg |
| Publisher | : KIT Scientific Publishing |
| Total Pages | : 246 |
| Release | : 2022-10-05 |
| Genre | : Science |
| ISBN | : 373151172X |
Hierarchically structured active materials in electrodes of lithium-ion cells are promising candidates for increasing gravimetric energy density and improving rate capability of the system. To investigate the influence of cathode structures on the performance of the whole cell, efficient tools for calculating effective transport properties of granular systems are developed and their influence on the electrochemical performance is investigated in specially adapted cell models.
| Author | : Wobrock, Mark |
| Publisher | : KIT Scientific Publishing |
| Total Pages | : 252 |
| Release | : 2017-11-22 |
| Genre | : Diffraction |
| ISBN | : 3731506823 |
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.
| Author | : Kumar, Amritesh |
| Publisher | : KIT Scientific Publishing |
| Total Pages | : 160 |
| Release | : 2017-11-06 |
| Genre | : |
| ISBN | : 3731506947 |
| Author | : Schöller, Lukas |
| Publisher | : KIT Scientific Publishing |
| Total Pages | : 230 |
| Release | : 2024-03-15 |
| Genre | : |
| ISBN | : 3731513404 |
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.
| Author | : Zhang, Tao |
| Publisher | : KIT Scientific Publishing |
| Total Pages | : 224 |
| Release | : 2021-09-27 |
| Genre | : Technology & Engineering |
| ISBN | : 3731510022 |
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.
