Eddy current testing apparatus and eddy current testing method

Electricity: measuring and testing – Magnetic – With means to create magnetic field to test material

Reexamination Certificate

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C324S262000

Reexamination Certificate

active

07872472

ABSTRACT:
An eddy current testing method for a turbine rotor including a disc, a plurality of turbine blades disposed along the periphery of the disc, and a plurality of pins for joining a blade fork portion formed on each of the plurality of turbine blades to a disc fork portion formed on the disc, the method including inserting a probe having an eddy current testing sensor into a hole formed through the disc fork portion and the blade fork portion by pulling out one of the plurality of pins in a state that the blade fork portion is still inserted into the disc fork portion; and performing eddy current testing for at least part of an internal surface of the hole by using the probe.

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S. Laborde, et al., “Ultrasonic Phased Array Inspection of Steam Turbine Blades With Pin Root Attachments Using a Matrix Probe”, Power-Gen-Europe, Jun. 26-28, 2007.
Partial European Search Report dated Dec. 20, 2007 in corresponding EP application No. 07 01 8941.0.

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