Sökning: "elastic constants"

Visar resultat 1 - 5 av 8 uppsatser innehållade orden elastic constants.

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

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Tillämpad mekanik

    Författare :Alec Chamberlain; [2021]
    Nyckelord :Microarchitectured; lattice; elasticity; viscoelasticity; computational; homogenization;

    Sammanfattning : 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). LÄS MER

  2. 2. Dämpning av seismiska vågor

    Kandidat-uppsats, KTH/Skolan för teknikvetenskap (SCI)

    Författare :Pouyan Missaghian; [2018]
    Nyckelord :;

    Sammanfattning : The aim of this project is to calculate the attenuation of seismic waves passing through the Earth's core by using given elastic constants and methods developed earlier and to see how we can interpret the crystallization of iron in that area by these results as well as a look at how sound waves propagate in solid and liquid substances, how the elastic properties of a material can affect the waves and how we can relate these to the attenuation. The attenuation inside Earth will also be described. LÄS MER

  3. 3. Low-Frequency Noise in InGaAs Nanowire MOSFETs

    Master-uppsats, Lunds universitet/Fasta tillståndets fysik; Lunds universitet/Fysiska institutionen

    Författare :Christian Mario Möhle; [2017]
    Nyckelord :Physics and Astronomy;

    Sammanfattning : 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. LÄS MER

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

    Master-uppsats, KTH/Skolan för teknik och hälsa (STH)

    Författare :Gioia Bassan; [2015]
    Nyckelord :Shear Wave Elastography; Transversely isotropic phantom;

    Sammanfattning : 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. LÄS MER

  5. 5. Thermodynamic and electronic properties of niobium at finite temperatures

    Master-uppsats, Linköpings universitet/Linköpings universitet/Teoretisk FysikTekniska fakulteten

    Författare :Johan Tidholm; [2015]
    Nyckelord :Anharmonicity; Thermodynamic properties; Electronic properties; Niobium; Finite temperatures;

    Sammanfattning : Niobium (Nb) is a fascinating element, that when it is in a solid state has remarkable properties. This is believed to be a result of its electronic configuration that has partially filled 4d and 5s sub-shells. Nb has a melting temperature of 2750 K, a high strength at high temperature, and a good wear resistance. LÄS MER