Microwave Detection of Cracks in Buried Pipes using the Complex Frequency Technique
F. Deek, and M. El-Shenawee
University of Arkansas, USA
This work outlines a new technique for detecting cracks in buried pipes using scattered fields. The matrix pencil method (MPM) is applied on synthetic data to extract the natural frequency poles. A 50 cm long hollow pipe, 2.5 cm in diameter, and 5 mm in thickness is considered. Cracks of arc lengths of 6 cm and 4 cm with a width of 0.5 mm are introduced into the metallic pipes. It is shown that the MPM has the capability to extract distinctive poles associated with these cracks even when the pipe is hidden behind plywood, buried in sand, or when the synthetic data is corrupted with random noise of 10 dB signal to noise ratio.
ACES Journal
2010
October
25
10
894 - 902
Due to copyright restrictions articles are not available for download. They are however indexed on this site and search results will therefore correctly indicate if such terms are present in the articles.
