Essays about: "vibroacoustic analysis"

Found 4 essays containing the words vibroacoustic analysis.

  1. 1. Vibroacoustic Analysis of an OLTC Diverter Switch for Condition Monitoring : Time frequency analysis with Fourier and wavelet transform in combination with multivariate logistic regression for condition monitoring of OLTC diverter switch

    University essay from Uppsala universitet/Avdelningen för systemteknik

    Author : Simon Persson; [2023]
    Keywords : Wavelet transform; CWT; logistic regression; machine learning; ML; vibroacoustic analysis; time frequency analysis; tap changer; diverter switch; power transformer; classification; prediction; condition; vibrations; state prediction; Hitachi Energy;

    Abstract : Vibrations are everywhere around us all the time and we often recognise them as sounds that we can hear and analyse with our brain. In this thesis, data that has been gathered from a diverter switch (DS) in a controlled environment, is analysed. READ MORE

  3. 2. Utilisation of hardwood in cross-laminated timber - A numerical study on vibrations in floors

    University essay from Lunds universitet/Byggnadsmekanik; Lunds universitet/Institutionen för byggvetenskaper

    Author : Johannes Jonasson; Olle Karlsson; [2022]
    Keywords : hardwood; birch; beech; clt; cross-laminated timber; vibrations; floors; footfall; accelerations; Technology and Engineering;

    Abstract : Cross-laminated timber (CLT) is an engineered wood product consisting of several layers of laminations bonded together with adhesives. In contrast to heavier construction materials, timber and other lightweight building materials are more prone to serviceability issues due to vibrations. READ MORE

  4. 3. FEM modelling of sound reduction index in partition CLT wall

    University essay from Lunds universitet/Institutionen för byggvetenskaper; Lunds universitet/Teknisk akustik

    Author : Adam Hultin; Erik Hörström; [2020]
    Keywords : Technology and Engineering;

    Abstract : Constructing buildings with wood brings many advantages, especially regarding environmental aspects, which has brought an up-rise in these types of structures. However, one of the main issues regarding wooden structures is its tendency to perform poorly acoustically in lower frequencies compared to heavier structures. READ MORE

  5. 4. Vibroacoustic Analyses

    University essay from KTH/Flygdynamik

    Author : Flavien Saenz Molina; [2017]
    Keywords : ;

    Abstract : The study of vibrations of structures is paramount in the aerospace industry, as parts are subjected to important dynamic loads. A vibroacoustic analysis of structures is thus undergone in order to ensure that they can withstand the acoustic environment. READ MORE