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Methods and Apparatus for Detecting Defects in an Object of Interest (2017)

Hartman, John K. ; Pearson, Lee H

In: CASI

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Publication Date: 2019-07-12

Description: A method for detecting defects in an object of interest comprises applying an ultrasonic signal including a tone burst having a predetermined frequency and number of cycles into an object of interest, receiving a return signal reflected from the object of interest, and processing the return signal to detect defects in at least one inner material. The object may have an outer material and the at least one inner material that have different acoustic impedances. An ultrasonic sensor system includes an ultrasonic sensor configured to generate an ultrasonic signal having a tone burst at a predetermined frequency corresponding to a resonant frequency of an outer material of an object of interest.

Keywords: Acoustics

Format: application/pdf

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