Search for dissertations about: "vibration reduction"

Showing result 21 - 25 of 68 swedish dissertations containing the words vibration reduction.

  1. 21. Low Frequency Acoustic Excitation and Laser Sensing of Vibration as a Tool for Remote Characterization of Thin Sheets

    University dissertation from Karlskrona : Blekinge Institute of Technology

    Author : Etienne Mfoumou; Blekinge Tekniska Högskola.; [2008]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; nondestructive testing; remote acoustics; slow dynamics; nonequilibrium dynamics; resonance frequency; material characterization; vibration-based technique; fracture toughness;

    Abstract : There is a need to monitor the existence and effects of damage in structural materials. Bulk components provide a much publicized example, but the need exists in a variety of other structures, such as layered materials used in food packaging industries. READ MORE

  2. 22. Design principles for noise reduction in hydraulic piston pumps : simulation, optimisation and experimental verification

    University dissertation from Linköping : Linköpings universitet

    Author : Andreas Johansson; Linköpings universitet.; Linköpings universitet.; [2005]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; hydraulic piston pumps; TECHNOLOGY; TEKNIKVETENSKAP;

    Abstract : Noise reduction in hydmulic systems has been an important research topic for several decades. In recent years, industry's interest in the area has grown dramatically. The reason is new national and international requirements and legislation governing working conditions. READ MORE

  3. 23. Dynamic Modelling and Vibration Analysis for Gear Tooth Crack Detection

    University dissertation from Luleå tekniska universitet

    Author : Omar D. Mohammed; Luleå tekniska universitet.; [2015]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Drift och underhållsteknik; Operation and Maintenance;

    Abstract : The aim of applying vibration-based condition monitoring in gear systems is to detect the initiation and development of degradation before the occurrence of failure. Eventually, degradation will result in a malfunction of the gearing system, which will affect the availability of the whole system. READ MORE

  4. 24. Vibrations in lightweight structures - Efficiency and reduction of numerical models

    University dissertation from Lund University

    Author : Ola Flodén; Lunds universitet.; Lund University.; Lunds universitet.; Lund University.; [2014]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Abstract : Multi-storey wood buildings have been increasing in popularity since a century-old ban on the construction of such buildings was lifted in 1994. Compared to conventional concrete structures, it is more difficult to build lightweight structures in such a way that noise and disturbing vibrations is avoided. READ MORE

  5. 25. Reduction in ground vibrations by the use of wave obstacles

    University dissertation from Lund University. Faculty of Engineering (LTH), Division of Structural Mechanics

    Author : Peter Persson; Lunds universitet.; Lund University.; Lunds universitet.; Lund University.; [2013]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Abstract : The increasing size of the population results in that unbuilt spaces needing to be used for the construction of new facilities. Large construction sites can generate disturbing vibrations to nearby buildings, both while construction is underway and afterwards through the operation of subways, for example. READ MORE