Method and apparatus for estimating a mechanical property
AssigneeABB AB
InventorsSten Linder, Lennart Thegel
Life of this patent
Estimating the term…
Abstract
An apparatus for estimating or supervising one or more internal mechanical properties of a metal alloy object with a known chemical composition based on the resistivity of the metal alloy object. The apparatus includes a device for measuring the resistivity of the metal alloy object, and a computation unit adapted to calculate the content of dissolved alloying elements in the metal alloy object based on the measured resistivity and the known chemical composition of the metal alloy, and based thereon to calculate at least one internal mechanical property of the metal alloy object.
Claims31
A method of estimating one or more internal mechanical properties of a metal alloy object with a known chemical composition based on a resistivity of the metal alloy object, the method comprising:
- determining the resistivity of the metal alloy object,
- calculating a content of dissolved alloying elements in the metal alloy object based on the determined resistivity and the chemical composition of the metal alloy object, and based thereon,
- calculating at least one internal mechanical property of the metal alloy object,
- receiving a temperature of the metal alloy object,
- calculating the resistivity at a reference temperature based on the temperature of the object and the measured resistivity, and
- calculating the content of dissolved alloying elements in the metal alloy based on the resistivity at the reference temperature.
An apparatus for estimating one or more internal mechanical properties of a metal alloy object with a known chemical composition based on the resistivity of the metal alloy object, the apparatus comprising:
- a device for measuring the resistivity of the metal alloy object, and
- a computation unit configured to calculate the content of dissolved alloying elements in the metal alloy object based on the measured resistivity and the known chemical composition of the metal alloy, and based thereon to calculate at least one internal mechanical property of the metal alloy object, receiving a temperature of the metal alloy object, calculating the resistivity at a reference temperature based on the temperature of the object and the measured resistivity, and calculating the content of dissolved alloying elements in the metal alloy based on the resistivity at the reference temperature.
Dependencies are inferred from the claim text.