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OwnerBert Jannsen, Arne Jacob +4inventors
InventorsBert Jannsen, Arne Jacob, Harald Budelmann, Guido Schneider, Hans-Joachim Wichmann, Karim Hariri
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The invention relates to a method for identifying the state (point of rupture 2) of electrically conductive oblong tensioning elements (1) involving the following steps: launching an electromagnetic measurment signal into a tensioning element (1a); changing the frequency; measuring the reflection spectrum, and; indentifying the state of the tensioning element (1a) according to the resonance frequencies. Said signal is lauched on the fore-part or on the periphery. In the event of coupled tensioning element (1), a scattering matrix system of equations is iteratively devised. The invention is used in the construction industry for prestressed concrete structures and rear anchored systems.
A method for identifying the state of electrically conductive elongate tensioning elements (1) characterized by
The method as claimed in one of the preceding claims, the ends of the tensioning elements (1) not being connected to one another in an electrically conducting manner, characterized by launching the electromagnetic measurement signal at the end face of a tensioning element (1).
The method as claimed in one of the preceding claims, characterized by connecting the remaining tensioning elements (1), on which the electromagnetic measurement signal is not launched, to ground potential.
A computer program with program coding means for carrying out the steps according to one of the preceding claims when the computer program is executed on a computer.
Dependencies are inferred from the claim text.