Essays about: "ljudmätningar"

Found 3 essays containing the word ljudmätningar.

  1. 1. Empirical Verification of an Acoustic Estimation of a Rocket Engine : A Comparison Between Estimated and Measured Noise of a Rocket Engine

    University essay from KTH/Skolan för industriell teknik och management (ITM)

    Author : Elina Arvidsson; [2022]
    Keywords : Esrange Space Centre; Flame deflector; Acoustic estimation; Liquid rocket engine; Rocket Factory Augsburg; Jet acoustics; Esrange Space Centre; Flammdeflektor; Akustisk estimering; vätskedriven raketmotor; Rocket Factory Augsburg; strömningsakustik;

    Abstract : The noise of a rocket engine is a complex and complicated phenomenon which has been studied for more than half a century [1]. There are many sources to this noise, but due to its great potential impact to the surrounding structures, including the vehicle itself, it is important to have a model to estimate the acoustic environment the engine produces. READ MORE

  3. 2. Deep Learning Based Classification of Rail Defects Using On-board Monitoring in the Stockholm Underground

    University essay from KTH/Spårfordon

    Author : Tobias Niewalda; [2020]
    Keywords : ;

    Abstract : The purpose of this work is to find out if an artificial neural network can be useful purpose of this work is to find out if an artificial neural network can be useful in order to detect rail squats with the existing Quiet Track Measurement System (QTMS). Squats are surface-initiated rail defects which arise due to rolling contact fatigue. READ MORE

  4. 3. Ljuddämpning av ventilationsfläktar i djurstallar

    University essay from SLU/Dept. of Landscape Architecture, Planning and Management (from 130101)

    Author : Martin Dreber; [2000]
    Keywords : buller; djurstallar; ventilation; ljuddämpare; ljudmätningar;

    Abstract : Den dominerande kontinuerliga bullerkällan i djurstallar uppkommer från ventilationsfläktar. Eftersom det är bevisat att buller bidrar till stress hos djur och människor restes krav under 1970-talet på högsta tillåtna ljudnivåer för djurstallar. READ MORE