Essays about: "rail noise"

Showing result 1 - 5 of 16 essays containing the words rail noise.

  1. 1. Comparison of Electric Aircraft and Electric Train : On the Distance Stockholm-Gothenburg

    University essay from KTH/Skolan för teknikvetenskap (SCI)

    Author : Therese Bäckström; [2021]
    Keywords : ;

    Abstract : Commercial aviation accounts for 2,4% of the total carbon dioxide emissions. This number is expected to reach 25% in 2050. In contrast to flying, the most energy efficient transportation mode is rail. In Sweden, rail and air are the most competitive on the distance Stockholm-Gothenburg due to similar total travel time. READ MORE

  3. 2. An indicative case-control study of noise perception due to environmental noise sources

    University essay from KTH/Marcus Wallenberg Laboratoriet MWL

    Author : Marcus Johansson ; [2020]
    Keywords : Noise perception; Psychoacoustics; Environmental noise; Bullerpåverkan; Psykoakustik; Samhällsbuller;

    Abstract : The subject of the thesis was proposed by the acoustic consultancy firm Brekke & Strand, which is of relevance for their additional understanding and development of services and contribution to robust solutions. The aim with this thesis is to give indicative results and to dig deeper into the relation between environmental noise and the perception of the same, specially focusing on construction related noise but also permanent noise sources that originates from infrastructure. READ MORE

  4. 3. Permanenta klätterväxlar – en undersökning : Denna rapport innehåller intervjuer, litteraturstudie samt en fältundersökning med ljudnivåmätning

    University essay from KTH/Byggteknik och design

    Author : Goran KLENCOVLJEVIC; MD Shuvo Khan; [2020]
    Keywords : Railway switch; flange bearing technology; sound level measurement; noise interference;

    Abstract : Swedish railway network is old, it is in need for maintenance and there is an ever-increasing volume oftraffic on todays railroads. Special trackwork component has taken increased abuse, leading to a stop intrain traffic and many delays occur, especially during the winter season. READ MORE

  5. 4. 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

  6. 5. Reflected Train Noise in Swedish Noise Prediction Methods, a comparison between measurements, Nordic Prediction Method, Nord2000 rail and CNOSSOS

    University essay from KTH/Marcus Wallenberg Laboratoriet MWL

    Author : Ka Hou Karl Ho; [2020]
    Keywords : Nord2000; NMT; Noise prediction method; sound propagation model; source model for railway noise; reflected sound; Nord2000; nordiska beräkningsmodellen för tågbuller; bullerberäkningsmodell; Ljudutbredningen modellen for tåg buller; källsmodell för tåg buller; fasadreflektioner;

    Abstract : The Swedish law requires a set of noise limit for residential buildings for health and safety. Conventionally, the Nordic Prediction Method (NMT) is used to predict the noise. However Nord2000 and CNOSSOS is going to be introduced to replace NMT. READ MORE