Microwave Non-Destructive Testing of Coatings and Paints Using Free Space Microwave Measurement
DOI:
https://doi.org/10.24191/srj.v2i2.9329Keywords:
XAbstract
Microwave nondestructive testing (MNDT) techniques are applied to evaluate quality of anti-corrosive protective coatings and paints on metal surfaces. A tree-space microwave measurement (FSMM) system is used for MNDT of protective coatings. The FSMM system consists of transmit and receive spot-focusing horn lens antennas, a vector network analyzer, mode transitions and a computer. Diffraction effects at the edges of the sample are minimized by using spot-focusing horn lens antennas. Errors due to multiple reflections between antennas are corrected by using free-space LRL (line, reflect, line) calibration technique. We have measured complex reflection coefficient of polyurethane based paint which is coated on brass plates.
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Copyright (c) 2005 Norhayati Hamzah, Deepak Kumar Ghodgaonkar, Kamal Faizin Che Kasim, Zaiki Awang
This work is licensed under a Creative Commons Attribution 4.0 International License.