CNDE has the following research capabilities for microwave NDE. An Anritsu 37347C Vector Network Analyzer (VNA), Figure 7, covers the frequency range 40 MHz to 20 GHz. The GPC-7 calibration kit and WR90 calibration kit can be used for the measurements with GPC-7 and WR90 waveguide connectors, respectively. An 10-cm beadless airline sample cell is used for permittivity and permeability characterization of material samples in the frequency range 2 to 18 GHz. A WR90 waveguide with X281C coaxial-waveguide adapter working in the X-band (8.2 to 12.4 GHz) can be used as a waveguide NDE sensor, Figure 8. The in-house built resonant patch sensor, Figure 4, can be used for inspection of smooth, gently-curving, low-conductivity structures.
Figure 7: Anritsu 37347C Vector Network Analyzer.
Figure 8: WR90 waveguide with X281C coaxial-waveguide adapter.