Essays about: "controlled excitation"

Showing result 11 - 15 of 25 essays containing the words controlled excitation.

  1. 11. Vibrational tests of preloaded rubber vibration isolators : A cam controlled displacement excitation

    University essay from Linnéuniversitetet/Institutionen för maskinteknik (MT)

    Author : Joanna Cierocka; Jiayue Tang; [2016]
    Keywords : Vibration test; Vibration isolator; Frequency response function; rubber; material properties; aging; camshaft; artificial aging;

    Abstract : Vibrations are very common phenomenon. It influences structures and generates acoustic noise which might be harmful to human beings. The vibration isolator was invented to reduce the effect from vibrations. However, the behavior of rubber material, which many vibration isolators are made of, is hard to predict. READ MORE

  3. 12. Pilot Testing of a Hydraulic Bridge Exciter

    University essay from KTH/Bro- och stålbyggnad

    Author : Richard Borg; Olivier Dymén; [2015]
    Keywords : Hydraulic bridge exciter; controlled excitation; modal testing; experimental modal analysis; railway bridges; measurements; load shaker; FEM; FE-modelling; script; Hydraulisk broexciterare; kontrollerad excitering; modala tester; experimentell modal analys; järnvägsbroar; mätningar; lastexciterare; FEM; FE-modellering; script;

    Abstract : In the design of a railway bridge that is meant for train speeds larger than 200 km/h, the Swedish Traffic Administration requires a dynamic analysis in addition to the conventional static design. The models used for static design may not always be suitable for dynamic analysis, which could lead to inaccurate estimations of the dynamic response. READ MORE

  4. 13. Low-Frequency Noise in TFETs

    University essay from Lunds universitet/Fysiska institutionen

    Author : Markus Hellenbrand; [2015]
    Keywords : Tunnel Field-Effect Transistor; Steep-Slope Devices; III-V; InAs; GaSb; Broken Band Gap; Physics and Astronomy;

    Abstract : Nanowire tunnel field-effect transistors (TFETs) were investigated by carrying out noise measurements and low-temperature DC measurements. The TFET tunnelling junction was realised by a GaSb/InAs heterojunction resulting in a broken band gap. TFET noise currents were measured at frequencies between 10 Hz and 1 kHz. READ MORE

  5. 14. Saturation Intensity of Rare Earth Ions Doped Crystals

    University essay from Lunds universitet/Fysiska institutionen; Lunds universitet/Atomfysik

    Author : Martynas Solovejus; [2014]
    Keywords : saturation intensity; spectral broadening; spectral effects; rare earths; rare-earths; cerium; Ce; Ce:YSO; Pr:YSO; RE:YSO; quantum information; quantum computing; Physics and Astronomy;

    Abstract : The thesis is primarily concerned with rare earth ions doped into yttrium ortho silicate crystals, RE:YSO. It is considered to be an ambitious platform for the development of quantum computing schemes. One such scheme requires the detection of single cerium ions. READ MORE

  6. 15. Assessment of Ultrasound Field Properties and the Potential Effects on Cells

    University essay from KTH/Medicinsk teknik

    Author : Zhongze Chen; [2013]
    Keywords : ;

    Abstract : Ultrasound is regarded a convenient and safe tool to acquire diagnostic information that we need for clinical use. For a long time ultrasound has been counted as a harmless method, but after all, there is a heating and a me-chanical impact by ultrasound exposure. This influence can reveal both positive (e.g. READ MORE