Microplasticity Of Idealized Single Crystalline Ag Cantilevers Characterized With Methods Of High Resolution
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| 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 | : 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 | : Mazzocchi, Francesco |
| Publisher | : KIT Scientific Publishing |
| Total Pages | : 212 |
| Release | : 2022-07-01 |
| Genre | : Technology & Engineering |
| ISBN | : 3731511819 |
This work aimed at designing, studying and producing the first prototypes of KIDs tailored for fusion plasma polarimetric diagnostics. Diamond was considered for the first time as substrate material for low-temperature superconducting detectors given its unmatched optical, radiation hardness and thermal qualities, properties necessary for working environments potentially saturated with radiation. This work represents a first step toward the optimization and final application of this technology.
| Author | : Fett, Theo |
| Publisher | : KIT Scientific Publishing |
| Total Pages | : 226 |
| Release | : 2022-07-11 |
| Genre | : Science |
| ISBN | : 3731511592 |
Water diffusing into silica surfaces gives rise for several effects on diffusion behaviour and mechanical properties. In a preceding booklet, we focused on diffusion and fiber strengths and deformations which were obtained by water soaking under external loading. In the present booklet we deal with results and interpretations of strength increase in the absence of applied stresses.
| Author | : Schwark, Tabea Gisela |
| Publisher | : KIT Scientific Publishing |
| Total Pages | : 178 |
| Release | : 2018-07-09 |
| Genre | : Grinding and polishing |
| ISBN | : 3731507595 |
Soft Magnetic Composites (SMCs) typically consist of large iron particles coated with a fairly thin inorganic layer. The combination of soft particles with a brittle layer causes, however, a rather poor mechanical behaviour of the SMCs. The particle boundaries of the specific SMC Somaloy 700 3P can be classified into four different types according to the complexity of their layers. Tests on both micro- and macroscale showed that the particle-boundary interface is critical in terms of failure.
| Author | : Cihan, Ebru |
| Publisher | : KIT Scientific Publishing |
| Total Pages | : 194 |
| Release | : 2020-10-21 |
| Genre | : Technology & Engineering |
| ISBN | : 3731509997 |
Recent studies of deformation mechanisms of metals and alloys pioneer the better investigation of the friction and wear behavior of materials with well-defined initial microstructures. Within this scope, in this work, the effect of sub-surface deformations on the resulting friction and wear behavior has been searched by means of a systematic experimental study on Au-Ni metallic multilayer model alloy system.
| Author | : Lingelbach, Yannick |
| Publisher | : KIT Scientific Publishing |
| Total Pages | : 278 |
| Release | : 2024-07-24 |
| Genre | : |
| ISBN | : 3731513528 |
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.
| Author | : Hüther, Jonas Johannes |
| Publisher | : KIT Scientific Publishing |
| Total Pages | : 360 |
| Release | : 2020-06-19 |
| Genre | : Technology & Engineering |
| ISBN | : 3731509830 |
| Author | : Ganser, Markus |
| Publisher | : KIT Scientific Publishing |
| Total Pages | : 272 |
| Release | : 2021-03-09 |
| Genre | : Technology & Engineering |
| ISBN | : 3731510472 |
Solid state batteries with a lithium metal electrode are considered the next generation of high energy battery technology. Unfortunately, lithium metal is prone to harmful protrusion or dendrite growth which causes dangerous cell failure. Within this work the problem of protrusion growth is tackled by deriving a novel electro-chemo-mechanical theory tailored for binary solid state batteries which is then used to discuss the impact of mechanics on interface stability by numerical studies.
| 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.
