JDR Vol.12 No.3 pp. 578-584
doi: 10.20965/jdr.2017.p0578


On-Site Non-Destructive Inspection of Bridges Using the 950 keV X-Band Electron Linac X-ray Source

Mitsuru Uesaka*1,†, Yuki Mitsuya*1, Eiko Hashimoto*1, Katsuhiro Dobashi*1, Ryota Yano*2, Hiroaki Takeuchi*2, Jean-Michel Bereder*2, Joichi Kusano*3, Eiji Tanabe*3, Natsuyo Maruyama*4, Yukiya Hattori*4, Masahiro Tatewaka*5, Hironobu Ono*5, Kentaro Murata*6, Atsushi Koishikawa*6, Futoshi Kaibuki*7, Hideo Sakurai*8, Yoshichika Seki *9, Yoshinobu Oshima*10, and Masahiro Ishida*10

*1Nuclear Professional School, School of Engineering, The University of Tokyo
Shirakata-shirane 2-22, Tokai-mura, Naka-gun, Ibaraki 319-1188, Japan

Corresponding author

*2Department of Nuclear Engineering and Management, School of Engineering, The University of Tokyo, Tokyo, Japan

*3Accuthera Inc., Kanagawa, Japan

*4Hitachi Power Solutions Co., Ltd., Ibaraki, Japan

*5KANTOGIKEN Co., Ltd., Ibaraki, Japan

*6XIT Co. Ltd., Tokyo, Japan

*7Atomy Research Inc., Japan

*8SAKURAI and Associates Inc., Japan

*9J-PARC Center, Japan Atomic Energy Agency, Ibaraki, Japan

*10Center for Advanced Engineering Structural Assessment and Research, Public Works Research Institute, Ibaraki, Japan

September 20, 2016
April 28, 2017
Online released:
May 29, 2017
June 1, 2017
bridge inspection, x-ray, non-destructive test, linear accelerator, finite element method analysis, computed tomography, tomosynthesis

Regular diagnosis of the structural health of infrastructure, such as bridges, is indispensable to ensure safety and reliable operation of the society. Non-destructive tests based on X-ray imaging are powerful tools to inspect the inside of a concrete structure in detail. Establishing a diagnostic method of bridges based on X-ray visualization is required to examine the internal conditions and helps in the rationalization of maintenances. We demonstrated our 950 keV X-band electron linac based X-ray source for on-site actual bridge inspection and visualized the inner structure of a bottom floor slab. For the more precise inspection of the conditions of wires and rods, we applied three-dimensional image reconstruction methods for bridge mock-up samples. Partial angle computed tomography and tomosynthesis gave cross section images of the samples with 1 mm resolution. We are planning to investigate another part of the bridge, with the 950 keV X-ray system in the near future.

Cite this article as:
M. Uesaka, Y. Mitsuya, E. Hashimoto, K. Dobashi, R. Yano, H. Takeuchi, J. Bereder, J. Kusano, E. Tanabe, N. Maruyama, Y. Hattori, M. Tatewaka, H. Ono, K. Murata, A. Koishikawa, F. Kaibuki, H. Sakurai, Y. Seki, Y. Oshima, and M. Ishida, “On-Site Non-Destructive Inspection of Bridges Using the 950 keV X-Band Electron Linac X-ray Source,” J. Disaster Res., Vol.12, No.3, pp. 578-584, 2017.
Data files:
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Last updated on Dec. 11, 2018