Measuring and testing – Vibration – By mechanical waves
Reexamination Certificate
2006-03-14
2006-03-14
Williams, Hezron (Department: 2856)
Measuring and testing
Vibration
By mechanical waves
C073S627000
Reexamination Certificate
active
07010980
ABSTRACT:
The porosity of a workpiece, in particular a workpiece made of a fiber composite material is determined. An ultrasonic signal is injected into the workpiece and an ultrasonic echo signal is received from the workpiece. The variation of the amplitude of the ultrasonic echo signal with respect to the depth is used as a measure of the porosity of the workpiece material at the respective depth.
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Greenberg Laurence A.
Intelligendt Systems & Services GmbH & Co. KG
Locher Ralph E.
Miller Rose M.
Stemer Werner H.
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