Method and apparatus for evaluation and inspection of composite-

Details Method and apparatus for evaluation and inspection of composite- Method and apparatus for evaluation and inspection of composite-

1997-05-21

1998-11-24

Williams, Hezron E.

Measuring and testing

Vibration

Resonance, frequency, or amplitude study

73578, 73600, 364508, G01N 2916, G01N 2918

Patent

active

058410317

ABSTRACT:
A method and apparatus for evaluation and inspection of a composite-repaired structure generates a frequency-varying electrical signal to test and evaluate the composite-repaired area. The electrical signal is converted into a mechanical signal and transmitted through the composite-repaired area of the structure. The transmitted mechanical signal is received and converted into an electrical signal for processing. The processed signal is compared with a baseline reference signal to determine whether the composite-repaired area is damaged or undamaged. The baseline reference signal is obtained at the time of the composite repair of the structure.

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