On development of urgent repair techniques for steel pipe destroyed by natural disaster (I). Explosive welding test and optical measurement of flyer motion

Yuji Ogata, Shiro Kubota, Akira Masui, Yuji Wada, Masahiro Seto, Kunihisa Katsuyama, Hideki Shimada, Kikuo Matsui

研究成果: Contribution to journalArticle査読

抄録

The experimental study on the application of explosive welding technique to urgent repairs of gas and water pipe networks was conducted. The relationship between the damage to the pipe and experimental parameters such as stand off distance and amount of explosive has been determined by a series of the explosive welding tests. The deflection of the pipe is maximum without stand-off under the same amount of emulsion explosive. As stand-off increases, the deflection of the pipe is decreased. To the definite amount of explosive, when stand-off is more than 5 mm, the deflection of the pipe becomes approximately constant. Moreover, the motion of the flyer was investigated by optical experiments. Regardless of the amount of explosive, the velocity of the flyer plate is accelerated instantly over 200 m/s within 0.5 mm flying distance and reached approximately constant velocity at short flying distance smaller than 5 mm.

本文言語英語
ページ(範囲)260-265
ページ数6
ジャーナルKayaku Gakkaishi/Journal of the Japan Explosives Society
61
6
出版ステータス出版済み - 12 1 2000
外部発表はい

All Science Journal Classification (ASJC) codes

  • 建築および建設
  • 地盤工学および土木地質学

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