Detecting Flaws in the Presence of Strong Geometry Signals in F100 Gas Turbine Engine Components

Automated Eddy Current Detection of Edge Defects in a Complex Geometry Using a Magnitude Approach

“…Hoppe and Stubbs [4], on the other hand, used the frequency content of the edge signals to discern the edge defect in antirotation windows. This frequency approach was extended to the inspection of other complex geometries such as antirotation tangs and live rims by Ko [5]. Furthermore, Ko [6] used the edge signals in scallops to position a rotational probe in a scallop prior to inspection.…”

“…Furthermore, Ko [6] used the edge signals in scallops to position a rotational probe in a scallop prior to inspection. These techniques [4][5][6] are limited to partial inspection of the geometries; however, a new technique is needed if an entire inspection of a complex geometry is required. This paper discusses the use of a simple mechanical mechanism to adapt to a complex geometry, and a signal processing technique for the detection of edge defects.…”