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The application of an eddy-current test technique for the detection of material flaws in graphite-reinforced aluminum panels is discussed. This particular technique involves scanning the specimen and recording both real and imaginary impedance components of the test coil using a format similar to that of an ultrasonic C-scan. The benefits of this approach are discussed and the results are compared with those of X-radiography and ultrasonics.
nondestructive tests, metal matrix composites, eddy-current testing
Physicist, Naval Surface Weapons Center, Materials Evaluation Branch, White Oak, Silver Spring, Md.