EMAT inspection of header tube stubs

Measuring and testing – Vibration – By mechanical waves

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Details

73643, G01N 2904

Patent

active

060792736

ABSTRACT:
A method for non-destructively testing closely-spaced objects, such as header tube stubs for a furnace or boiler using electromagnetic acoustic transducers (EMATs) having meander coil sensors. The small size of the sensor combined with the need to move the sensor only a small fraction of the circumference of a tube to scan the entire circumference of the tube under test permits easy and accurate testing of an entire tube, even when the tube is one of a closely-spaced bundle.

REFERENCES:
patent: 4312231 (1982-01-01), Kawashiima et al.
patent: 4685334 (1987-08-01), Latimer
patent: 5035143 (1991-07-01), Latimer
patent: 5526691 (1996-06-01), Latimer et al.
patent: 5619423 (1997-04-01), Scrantz

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