| 講演抄録／キーワード |
| 講演名 |
Time-domain Analysis of Microwave Guided-Modes Propagating along FRPM Pipe Wall for Pipeline Inspection
○Sayaka Matsukawa（AIST）・Kosuke Yoshida（Mie Univ.）・Tadahiro Okuda・Masaya Hazama（Kurimoto Ltd,）・Satoru Kurokawa（AIST）・Hiroshi Murata（Mie Univ.） |
| 抄録 |
（和） |
We have proposed a new nondestructive inspection technique for underground FRPM pipelines by using microwave guided-modes propagating along the pipe wall. In this paper, to investigate a detail of the transmission characteristics of the microwaves propagating along the pipe wall, time-domain analyses of measured and simulated microwave signals are discussed. The microwaves propagating along the FRPM pipe wall can be represented with a theoretical equation based on the propagating model along the FRPM slab with periodic boundary condition corresponding to the expanded pipe wall. The time-domain responses of the simulated microwave signals by using this equation were in good agreement with that of the measured results. The time-domain analysis of the microwave guided-modes enables us to have easy-to-use inspection methods for various buried pipelines. |
| （英） |
We have proposed a new nondestructive inspection technique for underground FRPM pipelines by using microwave guided-modes propagating along the pipe wall. In this paper, to investigate a detail of the transmission characteristics of the microwaves propagating along the pipe wall, time-domain analyses of measured and simulated microwave signals are discussed. The microwaves propagating along the FRPM pipe wall can be represented with a theoretical equation based on the propagating model along the FRPM slab with periodic boundary condition corresponding to the expanded pipe wall. The time-domain responses of the simulated microwave signals by using this equation were in good agreement with that of the measured results. The time-domain analysis of the microwave guided-modes enables us to have easy-to-use inspection methods for various buried pipelines. |
| キーワード |
（和） |
FRPM pipeline / microwave / nondestructive inspection / transmission coefficient / time-domain analysis / / / |
| （英） |
FRPM pipeline / microwave / nondestructive inspection / transmission coefficient / time-domain analysis / / / |
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信学技報 |
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