Ultrasonic testing of fitting assembly for fluid conduits...

Measuring and testing – Vibration – By mechanical waves

Reexamination Certificate

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C073S599000, C285S093000

Reexamination Certificate

active

10518337

ABSTRACT:
Hand-held apparatus and method for determining relative and/or absolute axial position of a conduit end within a fluid coupling includes application of input ultrasonic energy in the form of transient shear waves and analyzing the reflected energy. Application of the input energy collected at different radial positions about a first axial location is used with wavelet based correlation techniques to better analyze the reflected energy signals. Quality of the abutment between the conduit end and a surface associated with the coupling may also be determined as a separate or combined feature of the axial position determination.

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Article “Investigation of Signal Characteristics Using the Continuous Wavelet Transform”, John Sadowsky, pp. 258-269, Johns Hopkins APL Technical Digest, vol. 17, No. 3, 1996.
Article “Ultraschallprufung Grundlagen und industrielle Anwendungen”, Deutsch V. et al. pp. 55-73, 1997, XP002279058 Berlin Heidelberg New York.

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