Non-contact measurement of oxide thickness with a laser ultrasonic technique

Jonne Haapalainen, Joona Eskelinen, Tarja Jäppinen, Stefan Sandlin, Edward Hæggström

    Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific

    Abstract

    Non-contact laser ultrasound (LU) method is a potential tool for structural health evaluation in power plants. In this study a LU surface wave method was employed to determine the oxide layer thickness in zircaloy tubes used as cladding of fuel rods in nuclear reactors. Ultrasound excitation was done with a pulsed laser whereas a laser doppler interferometer was used to remotely receive the propagating ultrasonic signals. To show the method's capability results from a 8 µm zirconium oxide layer measurement are presented.
    Original languageEnglish
    Title of host publicationBaltica VIII
    Subtitle of host publicationLife Management and Maintenance for Power Plants
    Place of PublicationEspoo
    PublisherVTT Technical Research Centre of Finland
    Pages233-238
    Volume2
    ISBN (Electronic)978-951-38-7594-7
    ISBN (Print)978-951-38-7593-2
    Publication statusPublished - 2010
    MoE publication typeB3 Non-refereed article in conference proceedings
    EventBALTICA VIII - International Conference on Life Management and Maintenance for Power Plants - Helsinki-Stockholm, Finland
    Duration: 18 May 201020 May 2010

    Publication series

    SeriesVTT Symposium
    Number265
    ISSN0357-9387

    Conference

    ConferenceBALTICA VIII - International Conference on Life Management and Maintenance for Power Plants
    CountryFinland
    CityHelsinki-Stockholm
    Period18/05/1020/05/10

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  • Cite this

    Haapalainen, J., Eskelinen, J., Jäppinen, T., Sandlin, S., & Hæggström, E. (2010). Non-contact measurement of oxide thickness with a laser ultrasonic technique. In Baltica VIII: Life Management and Maintenance for Power Plants (Vol. 2, pp. 233-238). VTT Technical Research Centre of Finland. VTT Symposium, No. 265 https://www.vtt.fi/inf/pdf/symposiums/2011/S265.pdf