Location

Seattle, WA

Start Date

1-1-1996 12:00 AM

Description

The remote field eddy current (RFEC) technique was invented in 1951 [1], [2] and is widely used as a nondestructive evaluation tool for inspecting metallic pipes and tubing. Essentially, the RFEC phenomenon can be observed when an AC coil is excited inside a conducting tube (see Fig. 1). The RFEC signal can be sensed by a pick-up coil located 2–3 diameters away from the excitation coil. The signal is closely related to the tube wall condition, thickness, permeability, and conductivity. The signal phase, especially, has approximately linear relationship with the tube wall thickness.

Volume

15A

Chapter

Chapter 4: NDE Sensors

Section

Electromagnetic Probes (EC, Remote Field, MOI, SQUID)

Pages

1137-1144

DOI

10.1007/978-1-4613-0383-1_148

Language

en

File Format

application/pdf

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Jan 1st, 12:00 AM

Inspection of Metallic Plates Using a Novel Remote Field Eddy Current NDT Probe

Seattle, WA

The remote field eddy current (RFEC) technique was invented in 1951 [1], [2] and is widely used as a nondestructive evaluation tool for inspecting metallic pipes and tubing. Essentially, the RFEC phenomenon can be observed when an AC coil is excited inside a conducting tube (see Fig. 1). The RFEC signal can be sensed by a pick-up coil located 2–3 diameters away from the excitation coil. The signal is closely related to the tube wall condition, thickness, permeability, and conductivity. The signal phase, especially, has approximately linear relationship with the tube wall thickness.