Method and apparatus for detection of flaws in a metal component
First Claim
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1. A method for the detection of a flaw, in particular a fissure, in a metal component, wherein a pulsed high-frequency magnetic field is applied to the component and wherein a temperature distribution of thermal energy generated by eddy currents is detected during an application of a magnetic field pulse.
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Abstract
A method and apparatus for the detection of flaws, in particular of fissures, in metal components, is disclosed. A pulsed high-frequency magnetic field is coupled to the component. The temperature distribution of thermal energy generated by eddy currents during the application of a magnetic field pulse is detected.
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11 Claims
- 1. A method for the detection of a flaw, in particular a fissure, in a metal component, wherein a pulsed high-frequency magnetic field is applied to the component and wherein a temperature distribution of thermal energy generated by eddy currents is detected during an application of a magnetic field pulse.
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10. A method for detection of a flaw in a metal component, comprising the steps of:
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inserting the component into an interior space of a coreless coil which is connected to a high frequency generator;
applying a magnetic field pulse generated by the generator to the component through the coreless coil;
creating eddy currents in the component by the magnetic field pulse; and
detecting a temperature distribution of thermal energy caused by the eddy currents during the application of the magnetic field pulse.
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11. An apparatus for detection of a flaw in a metal component, comprising:
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a high frequency generator;
a coreless coil connected to the high frequency generator, wherein the component is insertable into an interior space of the coreless coil and wherein a magnetic field pulse generated by the generator is applied to an inserted component through the coreless coil; and
a detector;
wherein the magnetic field pulse creates eddy currents in the inserted component and wherein the detector detects a temperature distribution of thermal energy caused by the eddy currents during the application of the magnetic field pulse.
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Specification