TY - JOUR
T1 - Experimental investigation on bend-region crack detection using TE11 mode microwaves
AU - Chen, Guanren
AU - Katagiri, Takuya
AU - Yusa, Noritaka
AU - Hashizume, Hidetoshi
N1 - Funding Information:
This study was partially supported by the Grant-in-Aid for JSPS fellows (No. 18J20649). The authors would like to thank Mr. Takao Nagaya, who is affiliated with the School of Engineering of Tohoku University, for his assistance in the mechanical fabrication. The first author is supported by the China Scholarship Council (CSC).
Funding Information:
This work was supported by the Japan Society for the Promotion of Science [18J20649]. This study was partially supported by the Grant-in-Aid for JSPS fellows (No. 18J20649). The authors would like to thank Mr. Takao Nagaya, who is affiliated with the School of Engineering of Tohoku University, for his assistance in the mechanical fabrication. The first author is supported by the China Scholarship Council (CSC).
Publisher Copyright:
© 2021 Informa UK Limited, trading as Taylor & Francis Group.
PY - 2022
Y1 - 2022
N2 - This study experimentally investigates the efficacy of TE11 mode microwaves in detecting bend-region cracks. Three types of bends with different dimensions were deployed in a 3 m piping system and then tested, with an axial or circumferential slit machined at different angular positions to simulate a crack. The TE11 mode microwaves were excited using self-designed TE11 mode microwave probes and utilised for crack detection. The experimental results show clear reflection peaks at the bend position, demonstrating the feasibility of applying TE11 mode microwaves in the detection of bend-region cracks. Furthermore, the peak location of reflection is in accordance with the angular position of the slit. The findings also indicate that the peak amplitude of reflection is affected by the factors of mode conversion of microwaves at a bend. In addition, the experimental results also manifest an excellent signal-to-noise ratio to both two types of slits, suggesting that the microwave NDT is a powerful tool for bend-region inspection.
AB - This study experimentally investigates the efficacy of TE11 mode microwaves in detecting bend-region cracks. Three types of bends with different dimensions were deployed in a 3 m piping system and then tested, with an axial or circumferential slit machined at different angular positions to simulate a crack. The TE11 mode microwaves were excited using self-designed TE11 mode microwave probes and utilised for crack detection. The experimental results show clear reflection peaks at the bend position, demonstrating the feasibility of applying TE11 mode microwaves in the detection of bend-region cracks. Furthermore, the peak location of reflection is in accordance with the angular position of the slit. The findings also indicate that the peak amplitude of reflection is affected by the factors of mode conversion of microwaves at a bend. In addition, the experimental results also manifest an excellent signal-to-noise ratio to both two types of slits, suggesting that the microwave NDT is a powerful tool for bend-region inspection.
KW - bend
KW - metal pipe
KW - microwave probe
KW - mode conversion
KW - Non-destructive testing (NDT)
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U2 - 10.1080/10589759.2021.1900847
DO - 10.1080/10589759.2021.1900847
M3 - Article
AN - SCOPUS:85102691820
SN - 1058-9759
VL - 37
SP - 71
EP - 80
JO - Nondestructive Testing and Evaluation
JF - Nondestructive Testing and Evaluation
IS - 1
ER -