Study on the Property of Guided Wave Signal Analysis according to Defect Shape of Small Size
소구경 튜브 결함 형태에 따른 유도초음파 신호 해석 특성에 관한 연구

Doo-Song Gil, Yeon-Shik Ahn, Gye-Jo Jung, Sang-Gi Park, Yong-Gun Kim
2012 Journal of the Korean Society for Nondestructive Testing  
Currently domestic thermal and nuclear power plants are comprised of many type's condenser and steam generator tubes to produce the electricity of good quality. There are some methods to inspect these tubes in the event that several defects were discovered in these facilities. Among many non-destructive methods, we used guided wave to inspect the soundness of tubes, because this method is very fast to detect the defect and very simple to install the equipment and also, can inspect up to the
more » ... spect up to the long range at a fixed point. Also, this method has a drawback that does not detect a very small size defect. So, we made an effort to overcome this drawback through the experimentation and signal analysis according to the size and shape of the defect through the manufacture of various artificial cracks capable to generate within the small size tube in the study and we anticipate that these detect limits can be overcome along with the development of the signal processing and manufacturing technology of the sensor for the inspection.
doi:10.7779/jksnt.2012.32.4.410 fatcat:3m7ivwko3jehzjziumemfyedgm