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Acoustic systems and methods for nondestructive testing of a part through frequency sweeps

  • US 8,903,675 B2
  • Filed: 10/14/2011
  • Issued: 12/02/2014
  • Est. Priority Date: 10/14/2011
  • Status: Active Grant
First Claim
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1. A system for nondestructive testing of a part, the system comprising:

  • a waveform generator in electrical communication with an input transducer, the input transducer capable of conversion between electrical signals and acoustic signals;

    a signal analyzer in electrical communication with an output transducer, the output transducer capable of conversion between acoustic signals and electrical signals; and

    a processor in electrical communication with the waveform generator and with the signal analyzer, wherein the processor comprises;

    instructions to receive a set of parameters defining a frequency scan including a number of drive frequencies;

    instructions to determine that the number of drive frequencies exceeds a maximum capacity of the waveform generator, the maximum capacity corresponding to a maximum number of frequencies permitted by the waveform generator to be used in defining the frequency scan;

    instructions to determine a number of frequency sweeps to be performed by the waveform generator from the set of parameters, such that each of the frequency sweeps has a number of frequencies that is less than the maximum capacity of the waveform generator and comprises a portion of the drive frequencies, each of the frequency sweeps includes a frequency in common with another of the frequency sweeps, and the frequency sweeps collectively provide the number of drive frequencies; and

    instructions to instruct the waveform generator to perform each of the frequency sweeps by exciting the input transducer and to instruct the signal analyzer to synchronously receive corresponding response signals.

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