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Oral presentation

Evaluation of characteristic of pulsed laser irradiation on concrete using a QCW laser system

Nguyen, P. L.; Daido, Hiroyuki; Matsunaga, Yukihiro; Terada, Takaya; Yamada, Tomonori; Kawachi, Tetsuya

no journal, , 

Oral presentation

Development of a high-average-power small-scale Nd:YAG laser system for tunnel inspection

Mikami, Katsuhiro; Hasegawa, Noboru; Okada, Hajime; Kondo, Shuji; Kawachi, Tetsuya

no journal, , 

An outdoor-use laser system to improve the performances of existing tunnel inspection techniques is studied. One of the typical concepts is that the blow by hammer in routine hammering test is replaced by the laser pulse irradiation. This new laser system is required to provide high average output power (5 J, 50 Hz, $$sim$$15 ns) with a compact geometry enough to mount on the inspection vehicle (4.2 m $$times$$ 0.8 m). Dramatic speed-up of the inspection is expected by the combination of this new laser system and a laser scanning frequency measurement system.

Oral presentation

Technological advance of metallic alloys for hydrogen storage using the surface reforming with the pulse laser

Daido, Hiroyuki; Shobu, Takahisa; Abe, Hiroshi; Nishimura, Akihiko; Shimomura, Takuya

no journal, , 

no abstracts in English

Oral presentation

Proposal for the measurement method of the effect of heavy beam irradiation using short pulse X-rays

Moribayashi, Kengo

no journal, , 

no abstracts in English

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