A new mode convertor, which has four coaxial cable connectors and four semi-rigid cables situated circumferentially, was fabricated to propagate TE mode microwaves in a circular pipe in order to detect axial cracks appearing in the inner surface of the pipe. In this study, the reflections were measured using a network analyzer by propagating microwaves as a pulse through the mode convertor into a brass pipe that contains the slit on the inner surface. The reflections were evaluated with different orientations, lengths, and positions of the slit. The experimental results showed a clear difference between the signals with and without the slit.
IOS Press, Inc.
6751 Tepper Drive
Clifton, VA 20124
Tel.: +1 703 830 6300
Fax: +1 703 830 2300 firstname.lastname@example.org
(Corporate matters and books only) IOS Press c/o Accucoms US, Inc.
For North America Sales and Customer Service
West Point Commons
Lansdale PA 19446
Tel.: +1 866 855 8967
Fax: +1 215 660 5042 email@example.com