In this study, noise-source identification of a high-speed train was conducted using a microphone array system. The actual sound pressure level analysis of the noise source was performed using scaling factors between the real sound pressure and the beam-power output based on the assumption that the integrated area of the main beam-power lobe is equal to half that of the actual sound pressure of the noise source. Then, the scaling factors for the 144-channel microphone array were derived from analysis of the array response function, and a verification experiment was conducted using a known noise source, an air horn, located on a high-speed train moving at 240 km/h. After the verification test, noise-source identification of the high-speed train was conducted. Based on the resulting noise map of the high-speed train moving at 390 km/h, the main noise sources were determined to be the inter-coach spacing, wheels, and pantograph. The noise generated by the pantograph was then investigated in more detail. It was concluded that the pan head of the pantograph was the main noise source at a frequency of 1000 Hz.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Noise-source identification of a high-speed train by noise source level analysis


    Beteiligte:
    Noh, Hee-Min (Autor:in)


    Erscheinungsdatum :

    2017-07-01


    Format / Umfang :

    12 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch






    High Speed Train Noise Control

    Doyotte, C. / Duthion, L. | SAE Technical Papers | 1972


    Slat Noise Source Identification

    König, Daniel / Koh, Seong / Schröder, Wolfgang et al. | AIAA | 2009


    Noise Source Identification Using Phase Analysis

    Meccia, Carlos / Fernandes, Claudio G. / Ananias, Claudio H. et al. | SAE Technical Papers | 2010