Measuring and testing – Vibration – Resonance – frequency – or amplitude study
Patent
1996-03-07
1997-09-09
Williams, Hezron E.
Measuring and testing
Vibration
Resonance, frequency, or amplitude study
73597, G01N 2906
Patent
active
056659130
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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E-Systems Inc.
Meier Harold E.
Miller Rose M.
Williams Hezron E.
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