Part evaluation system/method using both resonance and surface vibration data
First Claim
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1. A method of evaluating a part, wherein a resonance inspection comprises exciting a part-under-test at a plurality of input frequencies and obtaining a frequency response of said part-under-test at each of said plurality of input frequencies, wherein a surface vibration inspection comprises vibrating said part-under-test and assessing surface vibrations of said part-under test, and wherein said method comprises the steps of:
- conducting a first inspection of a first part-under-test, wherein said first inspection comprises performing said resonance inspection on said first part-under-test;
conducting a second inspection of said first part-under-test, wherein said second inspection comprises performing said surface vibration inspection on said first part-under-test, wherein said second inspection comprises identifying at least one mode shape in surface inspection results from said second inspection for use in relation to said first inspection by associating a frequency with said at least one mode shape, and wherein said first inspection comprises utilizing said frequency associated with said at least one mode shape; and
evaluating said first part-under-test based upon each of said first and second inspections including using said surface inspection results from said second inspection to associate at least one resonance frequency peak in resonance inspection results from said first inspection with said at least one mode shape to at least identify a vibrational mode of said at least one resonance frequency peak in said resonance inspection results from said first inspection to compare said at least one resonance frequency peak to a resonance standard associated with said vibrational mode.
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Abstract
A part (120) may be subjected to both a resonance inspection and a surface vibration inspection. Various protocols (230; 240; 250; 280; 260) are disclosed as to how the results of one or more of these inspections may be used to evaluate the part (120).
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Citations
22 Claims
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1. A method of evaluating a part, wherein a resonance inspection comprises exciting a part-under-test at a plurality of input frequencies and obtaining a frequency response of said part-under-test at each of said plurality of input frequencies, wherein a surface vibration inspection comprises vibrating said part-under-test and assessing surface vibrations of said part-under test, and wherein said method comprises the steps of:
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conducting a first inspection of a first part-under-test, wherein said first inspection comprises performing said resonance inspection on said first part-under-test; conducting a second inspection of said first part-under-test, wherein said second inspection comprises performing said surface vibration inspection on said first part-under-test, wherein said second inspection comprises identifying at least one mode shape in surface inspection results from said second inspection for use in relation to said first inspection by associating a frequency with said at least one mode shape, and wherein said first inspection comprises utilizing said frequency associated with said at least one mode shape; and evaluating said first part-under-test based upon each of said first and second inspections including using said surface inspection results from said second inspection to associate at least one resonance frequency peak in resonance inspection results from said first inspection with said at least one mode shape to at least identify a vibrational mode of said at least one resonance frequency peak in said resonance inspection results from said first inspection to compare said at least one resonance frequency peak to a resonance standard associated with said vibrational mode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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Specification