Location

Brunswick, ME

Start Date

1-1-1997 12:00 AM

Description

The detection of defects that are located deep in thick walled ( >12 mm ) aluminum plates is of interest to both the aircraft and space industries. Conventional eddy current (EC) techniques are limited to the inspection of surface and subsurface anomalies. Newly developed high sensitivity magnetic sensors, such as magnetoresistive elements and superconducting quantum interface devices (SQUIDs) have enhanced the EC technique’s capability. Such sensors can be used to detect flaws that are located deep in aluminum plates. However, inspection of a defect located 12 mm to 25 mm below the surface of an aluminum plate is beyond the ability of conventional single frequency EC techniques.

Book Title

Review of Progress in Quantitative Nondestructive Evaluation

Volume

16A

Chapter

Chapter 4: NDE Sensors

Section

Electromagnetic Probes

Pages

1005-1012

DOI

10.1007/978-1-4615-5947-4_131

Language

en

File Format

application/pdf

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Jan 1st, 12:00 AM

Thick-Walled Aluminum Plate Inspection Using Remote Field Eddy Current Techniques

Brunswick, ME

The detection of defects that are located deep in thick walled ( >12 mm ) aluminum plates is of interest to both the aircraft and space industries. Conventional eddy current (EC) techniques are limited to the inspection of surface and subsurface anomalies. Newly developed high sensitivity magnetic sensors, such as magnetoresistive elements and superconducting quantum interface devices (SQUIDs) have enhanced the EC technique’s capability. Such sensors can be used to detect flaws that are located deep in aluminum plates. However, inspection of a defect located 12 mm to 25 mm below the surface of an aluminum plate is beyond the ability of conventional single frequency EC techniques.