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Direct Spectra-to-Spectra Methods

| 2024:1030 | Daniel Rydle, Martin Olofsson, Albin Bäckstrand Michele Godio, Gabriel Barslivo
The two investigated DSSMs in this study can be concluded to perform well in comparison to the more well-established time series method for evaluation of FRS, and are judged adequate to use in various design situations.
Bild Till Webben 20204 1030
\u003Cp\u003EThe obtained floor response spectra (FRS) using the two studied direct spectra-tospectra methods (DSSM) and the time series method show an overall good agreement in shape and acceleration response at the peaks. The results also show that there is a significant scatter at the peaks between the individual FRS obtained from the time history analyses. These results highlight the importance of using several sets of acceleration time series followed by averaging of the results when using this method. However, the FRS obtained using either of the two DSSMs mainly fall within the scatter of the time-history based FRS.\u00A0\u003C/p\u003E

Rapporter och publikationer

Här listas rapporter och resultatblad från programmet.

    • Rapport

    Inspection of Pipes in Leak Indication Systems

    Leak indication systems can detect leakage from fuel pools early. These systems consist of long systems of pipes with very small diameters, which can lead to blockages which is very important to prevent. but finding methods for this is difficult due to the geometrical complexity. Therefore, this study examined possible methods for detecting and removing mineral blockages in narrow, embedded leak indication pipes with sharp bends.

    |2026:1217Andreas Bergh, Jonas Engblom, Christer Johansson, Christian Jonasson
    Bild till hemsidan, 2026-1217.png
    • Rapport

    Analysis of long-term durability of prestressed tendons in Swedish nuclear reactor containments 2021

    The project analysed a unique database gathered over 40 years of destructive testing of prestressing tendons performed within interval technical evaluations in Swedish nuclear reactors containments.

    |2026:1207Jan Suchorzewski, Konrad Tarka, Dimitrios Boubitsas
    omslag 2026-1207
    • Rapport

    Syntesrapport 2007-2024: Betongtekniskt program kärnkraft

    Energiforsk driver sedan 2007 ett forskningsprogram kring betongkonstruktioner inom kärnkraftverken. Det finns ett behov av att bygga både kompetens och att utveckla teknikbasen för teknisk förvaltning av byggnader och konstruktioner inom kärnkraftindustrin.

    |2026:1206Peter Lundqvist, Vattenfall
    Bild Syntesrapport 2007-2024: Betongtekniskt program kärnkraft
    • Rapport

    Testing of acoustic cameras to detect leakage through a concrete structure

    The purpose of the project was to see how well the acoustic cameras worked on a concrete containment with known leakage through the structure.

    |2026:1189Fredrik Tropp, Gabriella Wölfinger and Johanna Spåls, Ringhals AB
    2026-1189