TY - JOUR
T1 - Optimized microwave excitation probe for general application in NDT of wall thinning in metal pipes of arbitrary diameter
AU - Sasaki, Kota
AU - Liu, Linsheng
AU - Yusa, Noritaka
AU - Hashizume, Hidetoshi
N1 - Funding Information:
This work was supported in part by Grants for Excellent Graduate Schools “World Center of Education and Research for Trans-disciplinary Flow Dynamics” from the Ministry of Education, Culture, Sports, Science and Technology (MEXT) , Japan, a Grant-in-Aid for JSPS Fellows, and MEXT KAKENHI Grant number 25750181 .
Publisher Copyright:
© 2014 Elsevier Ltd. All rights reserved.
PY - 2015/3
Y1 - 2015/3
N2 - Generalized approaches to developing a microwave NDT for flaws inside an arbitrary diameter pipe through optimizing a microwave-exciting probe were investigated. A microwave probe obtained from a parameter-optimizing scheme based on transmission characteristics is proposed. Three-dimensional finite element simulation of five microwave probes indicates that a larger optimization parameter enables reduced microwave reflection, as well as improved single-mode propagation inside the pipe as compared with conventional probes. Experimental verification, using straight brass pipes of various diameters confirmed that the optimized microwave probe exhibits a larger signal-to-noise ratio for internal flaws when compared with conventional probes, thereby validating the new optimization parameter.
AB - Generalized approaches to developing a microwave NDT for flaws inside an arbitrary diameter pipe through optimizing a microwave-exciting probe were investigated. A microwave probe obtained from a parameter-optimizing scheme based on transmission characteristics is proposed. Three-dimensional finite element simulation of five microwave probes indicates that a larger optimization parameter enables reduced microwave reflection, as well as improved single-mode propagation inside the pipe as compared with conventional probes. Experimental verification, using straight brass pipes of various diameters confirmed that the optimized microwave probe exhibits a larger signal-to-noise ratio for internal flaws when compared with conventional probes, thereby validating the new optimization parameter.
KW - Electromagnetic field analysis
KW - Microwave probe design
KW - Pipe-flaw inspection
KW - Probe optimizing parameter
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U2 - 10.1016/j.ndteint.2014.12.004
DO - 10.1016/j.ndteint.2014.12.004
M3 - Article
AN - SCOPUS:84921047246
VL - 70
SP - 53
EP - 59
JO - NDT International
JF - NDT International
SN - 0963-8695
ER -