Methods, systems and apparatus for detecting material defects in rotor blades of combustion turbine engines
First Claim
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1. A system for detecting defects in a turbine rotor blade of a combustion turbine engine while the combustion turbine engine operates, the system comprising:
- a turbine rotor blade that includes an insulator coating;
a first electrode that is electrically connected to the turbine rotor blade;
a second electrode that resides in proximity to the turbine rotor blade;
means for inducing a voltage across the first electrode and the second electrode; and
means for detecting current flowing between the first electrode and the second electrode.
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Abstract
A system for detecting defects in a turbine rotor blade of a combustion turbine engine. The system may include: a turbine rotor blade that includes an insulator coating; a first electrode that is electrically connected to the turbine rotor blade; a second electrode that resides in proximity to the turbine rotor blade; means for inducing a voltage across the first electrode and the second electrode; and means for detecting current flowing between the first electrode and the second electrode.
12 Citations
22 Claims
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1. A system for detecting defects in a turbine rotor blade of a combustion turbine engine while the combustion turbine engine operates, the system comprising:
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a turbine rotor blade that includes an insulator coating; a first electrode that is electrically connected to the turbine rotor blade; a second electrode that resides in proximity to the turbine rotor blade; means for inducing a voltage across the first electrode and the second electrode; and means for detecting current flowing between the first electrode and the second electrode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method for detecting defects in a turbine rotor blade of a combustion turbine engine while the combustion turbine engine is operating, the method comprising the steps of:
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providing a first electrode that is electrically connected to the turbine rotor blade; providing a second electrode that resides in proximity to the turbine rotor blade; applying a voltage across the first electrode and the second electrode; and detecting current flowing between the first electrode and the second electrode. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22)
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Specification