It is well known that discontinuities in pipe networks give reflections to pressure waves that can be analysed to find the time delay between the original signal and the reflected one. A leak in a pipe will also give a reflection point, though possibly a more diffuse one. It is a reasonably straightforward task (using, say, a cross correlation) to measure the time delay of the first reflection, but more complicated methods are required to extract data about further reflections from, for example, the end of the pipe which has a leak in it. Cepstrum techniques were used to find the common pipe lengths in the network. Latterly, this has been used in conjunction with wavelet analysis to filter the data. Finally, continuous wavelets are being used. These help to explain many of the results that have previously been produced. These were conducted on both real (experimental) and modelled networks.


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Wavelet and cepstrum analyses of leaks in pipe networks


    Weitere Titelangaben:

    Wavelet- und Cepstrum-Analysen der Lecks in Rohrnetzen


    Beteiligte:
    Beck, S.B.M. (Autor:in) / Foong, J. (Autor:in) / Staszweski, W.J. (Autor:in)


    Erscheinungsdatum :

    2005


    Format / Umfang :

    5 Seiten, 4 Bilder, 1 Tabelle, 7 Quellen




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    Cepstrum analysis

    Randall,R.B. / Hee,J. / Brueel and Kjaer,Naerum,DK | Kraftfahrwesen | 1981


    Airborne detection of pipe line leaks

    Abernathy, D.A. | Tema Archiv | 1987


    CEPSTRUM; a "forgotten" analysis?

    Halmrast, Tor | TIBKAT | 2021

    Freier Zugriff

    An Improved Local Cepstrum Analysis Method

    Zhang, Xining / Li, Bing / Lei, Wei | British Library Online Contents | 2016


    Cylinder pressure reconstruction by cepstrum analysis

    Azzoni,P. / Paniero,A. / ENEA,IT et al. | Kraftfahrwesen | 1990