Transcript Microwave NDT Test Jigs

Microwave NDE Test Fixture Examples
Craig E. Nelson – Consultant Engineer
Nelson Research, Inc.
2142 – N. 88th St. Seattle, WA. 98103 USA 206-498-9447 Craigmail @ aol.com
When I got interested in microwave non-destructive and
more-or-less non-contacting testing of porous silicon, I
began to make up a variety of suitable test fixtures.
These devices were assembled from bits and pieces of
microwave hardware that were obtained piecemeal over
time. Despite the home-brew nature of these devices, they
worked fairly well.
Nelson Research, Inc.
2142 – N. 88th St. Seattle, WA. 98103 USA 206-498-9447 Craigmail @ aol.com
3 Port Circulator
Tuned
Diode
Detector
Slide Screw
Tuner
Waveguide
Transition
“E” Bend
Aperture Table
for Test Sample
X Band (8-12 GHz) Test Fixture for Planar DUT Samples
Nelson Research, Inc.
2142 – N. 88th St. Seattle, WA. 98103 USA 206-498-9447 Craigmail @ aol.com
Waveguide
Transition
10 dB
Bidirectional
Coupler
Aperture Table
for Test Sample
“H” Bend
X Band (8-12 GHz) Test Fixture for Planar DUT Samples
Nelson Research, Inc.
2142 – N. 88th St. Seattle, WA. 98103 USA 206-498-9447 Craigmail @ aol.com
Sensing
Aperture
Cavity Top
Plate
Cavity
Base
Assembly
Small
Cavity
Excitation
loop
Cylindrical
Cavity Wall
Demountable 1 GHz Cavity Resonator with Sub-Wavelength Sensing Aperture
Nelson Research, Inc.
2142 – N. 88th St. Seattle, WA. 98103 USA 206-498-9447 Craigmail @ aol.com
Aperture
Table
Milled
Aperture
Milled
Aperture
Collection of Broadband, Small Aperture Coaxial “Hard-line” Microwave Sensors
Nelson Research, Inc.
2142 – N. 88th St. Seattle, WA. 98103 USA 206-498-9447 Craigmail @ aol.com
Summary and Conclusions
An interesting variety of practical microwave NDE Microwave
Test Fixtures have been presented
Nelson Research, Inc.
2142 – N. 88th St. Seattle, WA. 98103 USA 206-498-9447 Craigmail @ aol.com