Patent ID: 9228981
Filing Date: 2016-01-05
CPC Classification: G01N

Claim Text:
1. A method for identifying surface defects on a part, comprising the steps of: exciting a part-under-test using at least one input frequency; identifying a first surface acoustical wave (SAW) mode in a frequency response of said part-under-test to said exciting step; identifying a first reference peak in said frequency response of said part-under-test to said exciting step; assessing a first zone extending between and including said first SAW mode and said first reference peak; and characterizing said part-under-test as being defective based at least in part upon an existence of a surface defect trigger condition, wherein at least part of any said surface defect trigger condition is satisfied from said first zone, wherein said surface defect trigger condition comprises having at least one degenerate peak condition within said frequency response, wherein said at least one degenerate peak condition comprises a first degenerate peak condition within said first zone, wherein said first degenerate peak condition requires an existence of at least one degenerate peak within said first zone, and wherein said assessing step in relation to said first degenerate peak condition comprises at least one of a-d as follows: