Detection of Surface Cracks in Metallic Samples Using Microwave NDE

Inspection of severe service equipment and aging equipment in industry is becoming very important. One of the critical areas is detection of small surface cracks in metallic components. Even more important is the ability to detect this cracking under layers of nonmetallic material like insulation. This paper describes a novel microwave NDE solution that can be used to detect surface cracks with minimal training, no couplant, and no need for removal of paint and other surface coatings. The inspections can be performed in the field with the equipment in-place, thus shortening the items out-of-service time. The resulting microwave NDE method is portable and field deployable with the ability to detect surface cracks in metallic surfaces alone or beneath coatings.

References
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