Design and specifications of a high saturation absolute eddy current probe with internal reference

Journal Article · Sun Jan 01 00:00:00 EST 1978 · Mater. Eval.; (United States)

OSTI ID:6563455

Cecco, V S

The design and specifications of an eddy current probe developed for the inspection of Monel 400 steam generator tubes are described. This probe has four new features: absolute coil with internal reference, high saturation multi-magnet bobbin, flexibility for traversing small U-bend radius tubes and interchangeability through a 4-pin connector. Computer and experimental saturation plots were used to maximize the complex permanent magnet saturation arrangement. A toroidal reference coil was designed and built to track the impedance with frequency of the test coil. This probe has a high signal noise ratio, a low temperature drift and can be used at frequencies between 20 and 200 kHz with a 30 m multi-conductor cable.

• OSTI ID: 6563455
• Journal Information: Mater. Eval.; (United States), Vol. 37:13
• Country of Publication: United States
• Language: English

Related Subjects

20 FOSSIL-FUELED POWER PLANTS
42 ENGINEERING
EDDY CURRENT TESTING
ELECTRIC PROBES
PERFORMANCE
STEAM GENERATORS
DESIGN
EXPERIMENTAL DATA
MONEL 400
TUBES
ALLOYS
BOILERS
COPPER ALLOYS
DATA
ELECTROMAGNETIC TESTING
INFORMATION
IRON ALLOYS
MANGANESE ALLOYS
MATERIALS TESTING
NICKEL ALLOYS
NICKEL BASE ALLOYS
NONDESTRUCTIVE TESTING
NUMERICAL DATA
PROBES
TESTING
VAPOR GENERATORS
200104* - Fossil-Fueled Power Plants- Components
420500 - Engineering- Materials Testing