On-site non-destructive inspection of bridges using the 950 keV X-band electron linac X-ray source

Mitsuru Uesaka, Yuki Mitsuya, Eiko Hashimoto, Katsuhiro Dobashi, Ryota Yano, Hiroaki Takeuchi, Jean Michel Bereder, Joichi Kusano, Eiji Tanabe, Natsuyo Maruyama, Yukiya Hattori, Masahiro Tatewaka, Hironobu Ono, Kentaro Murata, Atsushi Koishikawa, Futoshi Kaibuki, Hideo Sakurai, Yoshichika Seki, Yoshinobu Oshima, Masahiro Ishida

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)


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.

Original languageEnglish
Pages (from-to)578-584
Number of pages7
JournalJournal of Disaster Research
Issue number3
Publication statusPublished - 2017 Jun
Externally publishedYes


  • Bridge inspection
  • Computed tomography
  • Finite element method analysis
  • Linear accelerator
  • Non-destructive test
  • Tomosynthesis
  • X-ray

ASJC Scopus subject areas

  • Safety, Risk, Reliability and Quality
  • Engineering (miscellaneous)


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