Resonance inspection-based surface defect system/method
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United States of America Patent
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Jan 5, 2016
Grant Date -
Oct 17, 2013
app pub date -
Nov 16, 2012
filing date -
Nov 17, 2011
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Abstract
A system and method for evaluating a part-under-test (120) is disclosed. The part-under-test (120) is excited using at least one drive frequency. A first surface acoustical wave (SAW) mode (206) is identified in the frequency response (200). A separate reference peak (204) for the identified SAW mode (206) is also identified in the frequency response (200). At least one degeneracy assessment zone (208) is evaluated for existence of a surface defect trigger condition. If a surface defect trigger condition exists, the part-under-test (120) may be rejected. Otherwise, the part-under-test (120) may be accepted.
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