System and method for inspection of parts with an eddy current probe
First Claim
Patent Images
1. An inspection system for detecting a flaw in a part comprising:
- a generally C-shaped core having an opening for receiving the part;
a driver coil wrapped around the core for creating a magnetic field in the opening;
a driving circuit configured to apply a plurality of excitation signals in the driver coil to induce a plurality of eddy current signals in the part;
at least one single element or multiple element eddy current sensor disposed in the opening, wherein the eddy current sensor is configured to detect a disruption in the plurality of eddy current signals; and
a control circuit configured to analyze the plurality of eddy current signals by performing a multifrequency phase analysis subsequent to multifrequency mixing of the plurality of eddy current signals, to inspect the part for the presence of the flaw.
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Abstract
An inspection system for detecting a flaw in a part is provided. The inspection system includes a generally C-shaped core having an opening for receiving the part. The system also includes a driver coil wrapped around the core for creating a magnetic field in the opening. The system further includes at least one single element or multiple element eddy current sensor disposed in the opening.
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Citations
20 Claims
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1. An inspection system for detecting a flaw in a part comprising:
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a generally C-shaped core having an opening for receiving the part; a driver coil wrapped around the core for creating a magnetic field in the opening; a driving circuit configured to apply a plurality of excitation signals in the driver coil to induce a plurality of eddy current signals in the part; at least one single element or multiple element eddy current sensor disposed in the opening, wherein the eddy current sensor is configured to detect a disruption in the plurality of eddy current signals; and a control circuit configured to analyze the plurality of eddy current signals by performing a multifrequency phase analysis subsequent to multifrequency mixing of the plurality of eddy current signals, to inspect the part for the presence of the flaw. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An inspection system for detecting a flaw in a part comprising:
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a generally C-shaped core having an opening for receiving the part; a driver coil wrapped around the core for creating a magnetic field in the opening; at least one single element or multiple element eddy current sensor disposed in the opening; a driving circuit configured to apply a plurality of excitation signals in the driver coil to induce a plurality of eddy current signals in the part; a detection circuit configured to detect a disruption in the plurality of eddy current signals; and a control circuit configured to analyze the plurality of eddy current signals by performing a multifrequency phase analysis subsequent to multifrequency mixing of the plurality of eddy current signals, to inspect the part for the presence of the flaw. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A method of manufacturing an inspection system comprising:
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disposing a driver coil around a generally C-shaped core; coupling a driving circuit to the driver coil, wherein the driving circuit is configured to apply a plurality of excitation signals in the driver coil to induce a plurality of eddy current signals in a part; disposing at least one single element or multiple element eddy current sensor inside an opening of the core wherein the eddy current sensor is configured to detect a disruption in the eddy current signals; and coupling a control circuit to the at least one single element or multiple element eddy current sensor, wherein the control circuit is configured to analyze the plurality of eddy current signals by performing a multifrequency phase analysis subsequent to multifrequency mixing of the plurality of eddy current signals, to inspect the part for the presence of the flaw. - View Dependent Claims (20)
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Specification