- Rapport
- Kärnkraft
Acoustic Emission Detection and Source Location
For this purpose, an array of microphones has been designed and developed by Doc. Peter Ulriksen from Lund University. The recorded signals have then been processed by Karim Haddad from Brüel & Kjær Sound & Vibration Measurement A/S. The processing consists in providing the localisation of a set of events.
The microphone array consists of 4 microphones arranged to locate an acoustic event in the 3D space. The processing is based on cross-correlations between pairs of microphones.
In total, 75 events have been analysed. A very large majority of localised events concern the top hemisphere above the position of the microphone array. A few numbers of events seem to be coming from the lower part, below the microphone array, but for these cases the results are less accurate.
Rapporter och publikationer
Här listas rapporter och resultatblad från programmet.
- 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
- Rapport
Bestämning av korrosionsskyddsförmågan för olika reparationsbruk vid partiella reparationer
Denna rapport sammanfattar resultaten från ett omfattande forsknings och utvecklingsprojekt genomfört bland annat inom Trafikverkets BBT program och Betongtekniskt program kärnkraft.
|2026:1186Bror Sederholm, Johan Ahlström, Jan Trägårdh
- Rapport
Gap formation between steel liner and cylinder wall in reactor containment buildings
The reactor containment building is the most important safety barrier in a nuclear power plant. It is a cylindrical, prestressed concrete structure with an embedded steel liner on the inner face of the containment wall, designed to maintain integrity in the event of an internal accident.
|2026:1181Nils Janestad, Manouchehr Hassanzadeh, Camilo Rito Pi och Elin Torén Johansson
- Rapport
Methods for detection of rebar in nuclear concrete structures
This project has reviewed non-destructive methods for detecting reinforcement in concrete structures and clarified which tasks can be performed by technically skilled in- house personnel and when specialist support is required.
|2026:1182Magnus Nilson