Ultrasonic inspection method

Measuring and testing – Vibration – By mechanical waves

Reexamination Certificate

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Reexamination Certificate

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07823454

ABSTRACT:
A method for ultrasonically inspecting components with wavy or uneven surfaces. A multi-element array ultrasonic transducer is operated with a substantial fluid layer, such as water, between the array transducer and the component surface. This fluid layer may be maintained by immersing the component in liquid or by using a captive couplant column between the probe and the component surface. The component is scanned, measuring the two dimensional surface profile using either a mechanical stylus, laser, or ultrasonic technique. Once an accurate surface profile of the component's surface has been obtained, data processing parameters are calculated for processing the ultrasonic signals reflected from the interior of the component that eliminate beam distortion effects and reflector mis-location that would otherwise occur due to the uneven surfaces.

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patent: 6877376 (2005-04-01), Schuster et al.
patent: 2007/0056373 (2007-03-01), Fischer et al.

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