Sökning: "resonance frequencies"

Visar resultat 31 - 35 av 84 uppsatser innehållade orden resonance frequencies.

  1. 31. Modeling of a Gear Test Rig : An Investigation of Static Loads and Dynamic Excitation of Vibrations

    Master-uppsats, Karlstads universitet/Fakulteten för hälsa, natur- och teknikvetenskap (from 2013)

    Författare :Albin Hugoh; [2019]
    Nyckelord :;

    Sammanfattning : Today the automotive industry is going through big changes and facing many new challenges due to the transformation to a sustainable transport solution in combination with tougher legal demands. Gears have been around for a long time and it is one of the most efficient ways of transferring rotary motion from one shaft to another. LÄS MER

  3. 32. Dynamic Analysis of the Interaction Between Vehicle Floor Panels and Interior Carpets - Simulations and Measurements

    Uppsats för yrkesexamina på avancerad nivå, Lunds universitet/Byggnadsmekanik; Lunds universitet/Institutionen för byggvetenskaper

    Författare :Jakob Dias Dos Santos Ingesson; [2019]
    Nyckelord :Technology and Engineering;

    Sammanfattning : Floor panels of vehicles are known to radiate structure-borne sound into the vehicle compartment. To reduce the structure-borne sound, numerical models are used in the development of vehicles to evaluate different design options of the vehicle body. LÄS MER

  4. 33. Efficient Estimation of Decaying Sinusoids with Application in NMR Spectroscopy

    Master-uppsats, Lunds universitet/Matematisk statistik

    Författare :Martin Jälmby; [2018]
    Nyckelord :decaying sinusoids; semi-parametric methods; wideband dictionary; NMR spectroscopy; Mathematics and Statistics;

    Sammanfattning : In this thesis, the Wideband Sparse Exponential Mode Analysis (WSEMA) estimator is introduced. It combines two recently developed techniques, the wideband dictionary and the Sparse Exponential Mode Analysis (SEMA) to make for an efficient estimator. LÄS MER

  5. 34. Wireless charger

    Kandidat-uppsats, Uppsala universitet/Institutionen för teknikvetenskaper

    Författare :Barry Dyi; Bruce Dondogori; Jonathan Hägerbrand; [2018]
    Nyckelord :trådlös; laddare; iphone;

    Sammanfattning : This project focuses on wireless power transmission (WPT). More specifically, the use of inductive coupling with resonance. The resonance phenomenon makes the transfer of power more efficient, through matching the inductive and capacitive reactances thus eliminating the reactive losses. LÄS MER

  7. 35. Variations in dynamic properties of a steel arch footbridge : An experimental study

    Master-uppsats, KTH/Bro- och stålbyggnad

    Författare :Martin Földhazy; [2018]
    Nyckelord :Damping ratio; Natural frequencies; Temperature; static mass; Human structure interaction;

    Sammanfattning : This study separately investigates how temperature as well as two real load-situations affects the modal damping ratio and natural frequencies of a 64.9m span steel arch footbridge. Measurements of acceleration have been completed which covers a temperature span of  to . LÄS MER