Modal analysis of feed water pipe line RL61 at the Loviisa NPP

Arja Saarenheimo, Heikki Haapaniemi, Pekka Luukkanen, Pekka Nurkkala, Jaakko Rostedt

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

    1 Citation (Scopus)


    The main aim of this project is to develop a practical method for monitoring the condition and remaining lifetime of process piping. The computational model is updated through measurements, but in practice both measurements and testing are often quite limited. Numerical pre-analyses were performed to optimise the use of resources available for testing. Optimal locations for the transducers and the shaker were predicted numerically using the ABAQUS Finite Element (FE) and FEMtools programs. It is important to select the optimal measurement method for each case. Both hammer excitation and shaker excitation were used when analysing modal shapes by measurement. Some preliminary evaluations of these results are presented here.
    Original languageEnglish
    Title of host publicationPlant Life Management
    Subtitle of host publicationProgress for structural integrity
    Place of PublicationEspoo
    PublisherVTT Technical Research Centre of Finland
    ISBN (Electronic)951-38-6281-X
    ISBN (Print)951-38-6280-1
    Publication statusPublished - 2003
    MoE publication typeB3 Non-refereed article in conference proceedings
    EventPlant Life Management: Progress for structural integrity - Espoo, Finland
    Duration: 1 Jan 20021 Jan 2002

    Publication series

    SeriesVTT Symposium


    SeminarPlant Life Management


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