Observation of ultrasonic signal and measurement of H2 concentration from the exterior of a metal pipe

Mahjabin Taskin, Ginshiro Utsumi, Yoshimine Kato

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    3 Citations (Scopus)


    Concentration of H2 gas in a stainless steel (SUS) pipe is measured by using ultrasound from the exterior of a pipe without making a hole. Gas concentration is calculated by the variation of ultrasound speed detected. A sound absorbing material is put on the outer surface of the SUS pipe to reduce the ultrasonic signal noise circulating through the shell of the SUS pipe. Then it is possible to measure the gas concentration by observing the airborne signal passing through the SUS pipe. Propagation of ultrasound wave in SUS pipe is also simulated by the finite-difference-time-domain method that could explain the ultrasound propagation signals in the SUS pipe.

    Original languageEnglish
    Pages (from-to)23503-23512
    Number of pages10
    JournalInternational Journal of Hydrogen Energy
    Issue number41
    Publication statusPublished - Aug 30 2019

    All Science Journal Classification (ASJC) codes

    • Renewable Energy, Sustainability and the Environment
    • Fuel Technology
    • Condensed Matter Physics
    • Energy Engineering and Power Technology


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