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New Contributions To R Curves And Bridging Stresses Applications Of Weight Functions
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Book Synopsis New Contributions to R-curves and Bridging Stresses - Applications of Weight Functions by : Theo Fett
Download or read book New Contributions to R-curves and Bridging Stresses - Applications of Weight Functions written by Theo Fett and published by KIT Scientific Publishing. This book was released on 2014-07-31 with total page 250 pages. Available in PDF, EPUB and Kindle. Book excerpt: Most ceramics show an increase of the crack growth resistance during crack propagation (R-curve behaviour). Reasons for such behaviour are bridging effects between opposite crack surfaces, phase transformations around the tip of a crack, and development of micro-cracking zones.This booklet predominantly deals with the bridging behaviour and the discussion of the observed effects in terms of the fracture mechanics weight function procedure.
Book Synopsis Dental Ceramics by : Ulrich Lohbauer
Download or read book Dental Ceramics written by Ulrich Lohbauer and published by Springer Nature. This book was released on 2022-07-01 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is an evidence-based update on recent most significant advances in dental ceramics, specifically related to the relationships between composition, microstructure and mechanical behavior. Readers will find an introduction to the chemistry of dental ceramics as well as information about the technological progress and practical requirements restorative materials need to satisfy for long-lasting structural integrity. The book uses mechanistic approaches to address failure mechanisms from controlled experiments thus providing the tools for the application of sound research methodologies in the field. It is targeted for researcher and dentists interested in the field of dental ceramic materials and fracture mechanics.
Book Synopsis Phase-field Modeling of Phase Changes and Mechanical Stresses in Electrode Particles of Secondary Batteries by : Zhang, Tao
Download or read book Phase-field Modeling of Phase Changes and Mechanical Stresses in Electrode Particles of Secondary Batteries written by Zhang, Tao and published by KIT Scientific Publishing. This book was released on 2021-09-27 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis The Effects of Internal Stress and Lithium Transport on Fracture in Storage Materials in Lithium-Ion Batteries by : Klinsmann, Markus
Download or read book The Effects of Internal Stress and Lithium Transport on Fracture in Storage Materials in Lithium-Ion Batteries written by Klinsmann, Markus and published by KIT Scientific Publishing. This book was released on 2016-03-08 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fracture of storage particles is considered to be one of the major reasons for capacity fade and increasing power loss in Li-ion batteries. In this work, we tackle the problem by merging a coupled model of mechanical stress and diffusion of Li-ions with a phase field description of an evolving crack. The novel approach allows us to study the evolution of the Li concentration together with the initiation and growth of a crack in an arbitrary geometry and without presuming a specific crack path.
Book Synopsis Advances in Ceramic Biomaterials by : Paola Palmero
Download or read book Advances in Ceramic Biomaterials written by Paola Palmero and published by Woodhead Publishing. This book was released on 2017-09-15 with total page 501 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bioceramics are an important class of biomaterials. Due to their desirable attributes such as biocompatibility and osseointegration, as well as their similarity in structure to bone and teeth, ceramic biomaterials have been successfully used in hard tissue applications. In this book, a team of materials research scientists, engineers, and clinicians bridge the gap between materials science and clinical commercialization providing integrated coverage of bioceramics, their applications and challenges. The book is divided into three parts. The first part is a review of classes of medical-grade ceramic materials, their synthesis and processing as well as methods of property assessment. The second part contains a review of ceramic medical products and devices developed, their evolution, their clinical applications and some of the lessons learned from decades of clinical use. The third part outlines the challenges to improve performance and the directions that novel approaches and advanced technologies are taking, to meet these challenges. With a focus on the dialogue between surgeons, engineers, material scientists, and biologists, this book is a valuable resource for researchers and engineers working toward long-lasting, reliable, customized biomedical ceramic and composites devices. - Edited by a team of experts with expertise in industry and academia - Compiles the most relevant aspects on regulatory issues, standards and engineering of bioceramic medical devices as inspired by commercial and clinical needs - Introduces bioceramics, their evolution and applications in hard tissue engineering and medical devices
Author :Feuchter, Manuel Klaus Ludwig Publisher :KIT Scientific Publishing ISBN 13 :3731502615 Total Pages :258 pages Book Rating :4.7/5 (315 download)
Book Synopsis Investigations on Joule heating applications by multiphysical continuum simulations in nanoscale systems by : Feuchter, Manuel Klaus Ludwig
Download or read book Investigations on Joule heating applications by multiphysical continuum simulations in nanoscale systems written by Feuchter, Manuel Klaus Ludwig and published by KIT Scientific Publishing. This book was released on 2014-10-01 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work furthers the overall understanding of a 3w-measurement, by considering previously unexamined macroscopic influence factors within measurement by Finite Element simulations (FES). Moreover, new measuring configurations are developed to determine (an)isotropic thermal conductivities of nanoscale samples. Since no analytic solutions are available for these configurations, a new evaluation methodology is presented to determine emergent thermal conductivities by FES and Neural Networks.
Book Synopsis Consequences of hydroxyl generation by the silica/water reaction - Part I: Diffusion and Swelling by : Fett, Theo
Download or read book Consequences of hydroxyl generation by the silica/water reaction - Part I: Diffusion and Swelling written by Fett, Theo and published by KIT Scientific Publishing. This book was released on 2022-07-11 with total page 226 pages. Available in PDF, EPUB and Kindle. Book excerpt: Water diffusing into silica surfaces gives rise for several effectson diffusion behaviour and mechanical properties. Water added to silica glass increases its specific volume so that the silica expands near the surface. Mechanical boundary conditions give rise for compressive “swelling stresses”. This fact provides a tool for the interpretation of many experimental observations from literature.
Book Synopsis Consequences of hydroxyl generation by the silica/water reaction - Part II: Global and local Swelling - Part III: Damage and Young's Modulus by : Fett, Theo
Download or read book Consequences of hydroxyl generation by the silica/water reaction - Part II: Global and local Swelling - Part III: Damage and Young's Modulus written by Fett, Theo and published by KIT Scientific Publishing. This book was released on 2022-07-11 with total page 226 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis Characterisation and Modelling of Continuous-Discontinuous Sheet Moulding Compound Composites for Structural Applications by : Trauth, Anna
Download or read book Characterisation and Modelling of Continuous-Discontinuous Sheet Moulding Compound Composites for Structural Applications written by Trauth, Anna and published by KIT Scientific Publishing. This book was released on 2020-12-11 with total page 468 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis Fatigue of Micro Molded Materials - Aluminum Bronze and Yttria Stabilized Zirconia by : Kennerknecht, Tobias
Download or read book Fatigue of Micro Molded Materials - Aluminum Bronze and Yttria Stabilized Zirconia written by Kennerknecht, Tobias and published by KIT Scientific Publishing. This book was released on 2014-12-04 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt: Custom built setups were developed to investigate micro samples during quasistatic and cyclic testing in tension, compression and bending. Micro molded CuAl10Ni5Fe4-samples showed similar fatigue behavior compared to macroscopic samples due to both the sample size and microstructure being scaled down with the manufacturing process. Results from cyclic three-point bending tests on micro molded 3Y-TZP suggested that a minimum crack extension is necessary to develop cyclically degradable shielding.
Book Synopsis Phase-field simulations of multi-component solidification and coarsening based on thermodynamic datasets by : Schulz, Sebastian
Download or read book Phase-field simulations of multi-component solidification and coarsening based on thermodynamic datasets written by Schulz, Sebastian and published by KIT Scientific Publishing. This book was released on 2017-02-22 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt: The utilization of thermodynamic and mobility data plays a major role in phase-field modeling. This work discusses different formulations for the thermodynamic quantities of a grand potential model along with practices to determine parameters from datasets. The framework is used to study solidification of Al-Si-Mg for a variation of composition, diffusivities and surface energy anisotropies. To verify the simulations, they are compared with solidification theories.
Book Synopsis Development of NbN based Kinetic Inductance Detectors on sapphire and diamond substrates for fusion plasma polarimetric diagnostics by : Mazzocchi, Francesco
Download or read book Development of NbN based Kinetic Inductance Detectors on sapphire and diamond substrates for fusion plasma polarimetric diagnostics written by Mazzocchi, Francesco and published by KIT Scientific Publishing. This book was released on 2022-07-01 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis High Cycle Fatigue of Al and Cu Thin Films by a Novel High-Throughput Method by : Sofie Burger
Download or read book High Cycle Fatigue of Al and Cu Thin Films by a Novel High-Throughput Method written by Sofie Burger and published by KIT Scientific Publishing. This book was released on 2014-05-19 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the last two decades, the reliability of small electronic devices used in automotive or consumer electronics gained researchers attention. Thus, there is the need to understand the fatigue properties and damage mechanisms of thin films. In this thesis a novel high-throughput testing method for thin films on Si substrate is presented. The specialty of this method is to test one sample at different strain amplitudes at the same time and measure an entire lifetime curve with only one experiment.
Book Synopsis Microplasticity of idealized single crystalline Ag cantilevers characterized with methods of high resolution by : Wobrock, Mark
Download or read book Microplasticity of idealized single crystalline Ag cantilevers characterized with methods of high resolution written by Wobrock, Mark and published by KIT Scientific Publishing. This book was released on 2017-11-22 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis Microstructure evolution in strontium titanate Investigated by means of grain growth simulations and x-ray diffraction contrast tomography experiments by : Syha, Melanie
Download or read book Microstructure evolution in strontium titanate Investigated by means of grain growth simulations and x-ray diffraction contrast tomography experiments written by Syha, Melanie and published by KIT Scientific Publishing. This book was released on 2014-09-25 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt: Understanding the physical processes during fabrication and annealing of ceramic materials is a long sought goal among material scientists. Using strontium titanate as a model system for perovskite ceramics, the present work combines advanced non-destructive 3D characterization techniques and computational modeling of microstructure evolution in order to link grain morphology, interface anisotropy and microstructure evolution to macroscopic physical properties .
Book Synopsis Isothermes und thermisch-mechanisches Ermüdungsverhalten von Verbundwerkstoffen mit Durchdringungsgefüge (Preform-MMCs) by : Ulrich, Oliver
Download or read book Isothermes und thermisch-mechanisches Ermüdungsverhalten von Verbundwerkstoffen mit Durchdringungsgefüge (Preform-MMCs) written by Ulrich, Oliver and published by KIT Scientific Publishing. This book was released on 2014-05-19 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study deals with the fatigue behaviour of metal-matrix-composites (MMCs) having ceramic contents of 30 to 39 Vol-%. The MMCs where produced by way of infiltrating a ceramic preform by an aluminium alloy. The characterisation of the MMC's cyclic and fatigue behaviour was researched on the basis of isothermal and thermal-mechanical fatigue tests.
Book Synopsis Microstructural Stability of Nanostructured Fcc Metals During Cyclic Deformation and Fatigue by : Matthias Friedrich Funk
Download or read book Microstructural Stability of Nanostructured Fcc Metals During Cyclic Deformation and Fatigue written by Matthias Friedrich Funk and published by KIT Scientific Publishing. This book was released on 2014-05-22 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nanostructured metals with maximal grain or twin sizes of less than 100 nm have advanced properties like increased strength.As beneficial as these microstructures can be for the strength of materials, they are not infinitely stable. During mechanical loading these metals tend to coarsen and lose their beneficial structure. Besides electron microscopic analysis of fatigued samples, in situ cycling tests were conducted in order to observe structural degradation during mechanical loading.
