Abstract
In this paper, the efficacy of near-field millimeter-wave nondestructive techniques, using open-ended flange-mounted rectangular waveguide probes, for extracting information of 3-D crack area deformation (i.e., in-plane and out-of-plane deformation) is demonstrated. It is shown that this information can be obtained from indications of unique interference patterns that are generated between the probe and the metal surface during the raster scan of a surface-breaking exposed and covered fatigue crack using a phase-sensitive reflectometer.
| Original language | English |
|---|---|
| Number of pages | 4 |
| Journal | IEEE Transactions on Instrumentation and Measurement |
| Publication status | Published - 2009 |
Keywords
- cracks
- deformation
- fatigue cracks
- microwave reflectometry
- millimetre wave imaging
- rectangular waveguides