Essays about: "elastic constants"

Showing result 1 - 5 of 9 essays containing the words elastic constants.

  1. 1. High-throughput ab-initio calculation of the elastic constants of alloys with vacancies - Ta0.5Al0.5N1-x and Nb0.5Al0.5N1-x with x = 0.03, 0.05 and 0.10

    University essay from Linköpings universitet/Teoretisk Fysik

    Author : Sadeq Hassani; [2023]
    Keywords : Vacancy concentration; Structural properties; Mechanical properties; High-throughput calculations; TaAlN; NbAlN;

    Abstract : In today's data-driven society, data holds immense value and is sought after across various domains, including the realm of science. Materials science, in particular, relies heavily on data acquisition and analysis to further advancements in the field. READ MORE

  3. 2. Multi-Scale Topology Optimization of Lattice Structures Using Machine Learning

    University essay from Uppsala universitet/Tillämpad mekanik

    Author : Julia Ibstedt; [2023]
    Keywords : Topology optimization; Multi-scale topology optimization; Machine learning; Gaussian process; Homogenization; Inverse homogenization; Anisotropic materials; Symmetry groups; Material property space; Topologioptimering; Flerskalig topologioptimering; Maskininlärning; Gaussian process; Homogenisering; Anisotropa material; Symmetrigrupper; Materialegenskapsrymd;

    Abstract : This thesis explores using multi-scale topology optimization (TO) by utilizing inverse homogenization to automate the adjustment of each unit-cell's geometry and placement in a lattice structure within a pressure vessel (the design domain) to achieve desired structural properties. The aim is to find the optimal material distribution within the design domain as well as desired material properties at each discretized element and use machine learning (ML) to map microstructures with corresponding prescribed effective properties. READ MORE

  4. 3. Micro-architectured materials for noise and vibration control in high voltage products – design and modelling

    University essay from Uppsala universitet/Tillämpad mekanik

    Author : Alec Chamberlain; [2021]
    Keywords : Microarchitectured; lattice; elasticity; viscoelasticity; computational; homogenization;

    Abstract : Many Hitachi ABB Power Grids (HAPG) products vibrate and emit noise, but legal limitations of these parameters fuel the development of energy absorption methods used on products. Methods such as Constrained Layer Damping (CLD). READ MORE

  5. 4. Low-Frequency Noise in InGaAs Nanowire MOSFETs

    University essay from Lunds universitet/Fasta tillståndets fysik; Lunds universitet/Fysiska institutionen

    Author : Christian Mario Möhle; [2017]
    Keywords : Physics and Astronomy;

    Abstract : Low-frequency (LF) noise (1/f as well as random telegraph-signal (RTS) noise) measurements were performed on high-performance InGaAs nanowire (NW) metal-oxide-semiconductor field-effect transistors (MOSFETs). 1/f noise measurements at room temperature (RT) show that the dominant noise mechanism is carrier number fluctuations. READ MORE

  6. 5. Dual-Probe Shear Wave Elastography in a Transversely Isotropic Phantom

    University essay from KTH/Skolan för teknik och hälsa (STH)

    Author : Gioia Bassan; [2015]
    Keywords : Shear Wave Elastography; Transversely isotropic phantom;

    Abstract : Shear Wave Elastography (SWE) is an ultrasound based technique which is able to measure tissue stiffness through the speed of induced shear waves. Tissue stiffness is often related to pathological conditions and detecting mechanical changes can help the recognition of potential diseases. READ MORE