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US 8,299,804 B2Granted
Nondestructive inspection method of insulator using frequency resonance function
AssigneeKorea Electric Power Corporation
InventorsKi-Yong Oh, Joon-Young Park, Jae-Kyung Lee, Byung-Hak Cho
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Abstract
A nondestructive inspection method of testing insulators using frequency resonance function that can inspect an anomaly of an insulator by vibrating the insulator with a force having the characteristic of white noise, measuring the change in motion of the insulator according to the vibration and calculating the frequency resonance function of the insulator is disclosed.
Claims10
A nondestructive inspection method of testing insulators using a frequency resonance function, the method comprising:
- vibrating an inspector and measuring the magnitude of a vibration force and the motion of the inspector according to the vibration, the vibration force being inputted when vibrated;
- converting the magnitude of the measured vibration force and the motion of the inspector to a first frequency resonance function;
- and
- determining whether the insulator has an anomaly according to a difference between modes and amplitudes of the first frequency resonance function and a second frequency resonance function by comparing the first frequency resonance function with the second frequency resonance function, which is a frequency resonance function of a normal insulator.
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Dependencies are inferred from the claim text.