Eddy sensors for small diameter stainless steel tubes. | Zendy

Jack L. Skinner | Zendy; Alfredo Morales | Zendy; Jon E. Grant | Zendy; Henry Korellis | Zendy; Marianne Elizabeth LaFord | Zendy; Benjamin Van Blarigan | Zendy; Lisa Andersen | Zendy

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Eddy sensors for small diameter stainless steel tubes.

Author(s) -

Jack L. Skinner,

Alfredo Morales,

Jon E. Grant,

Henry Korellis,

Marianne Elizabeth LaFord,

Benjamin Van Blarigan,

Lisa Andersen

Publication year - 2011

Publication title -

osti oai (u.s. department of energy office of scientific and technical information)

Language(s) - English

Resource type - Reports

DOI - 10.2172/1030394

Subject(s) - eddy current , bobbin , electromagnetic coil , materials science , tube (container) , eddy current sensor , eddy current testing , acoustics , mechanical engineering , composite material , electrical engineering , engineering , physics

The goal of this project was to develop non-destructive, minimally disruptive eddy sensors to inspect small diameter stainless steel metal tubes. Modifications to Sandia's Emphasis/EIGER code allowed for the modeling of eddy current bobbin sensors near or around 1/8-inch outer diameter stainless steel tubing. Modeling results indicated that an eddy sensor based on a single axial coil could effectively detect changes in the inner diameter of a stainless steel tubing. Based on the modeling results, sensor coils capable of detecting small changes in the inner diameter of a stainless steel tube were designed, built and tested. The observed sensor response agreed with the results of the modeling and with eddy sensor theory. A separate limited distribution SAND report is being issued demonstrating the application of this sensor

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