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Damage Caused by Dynamic/Cyclic Loading of Detonation Chamber

[+] Author Affiliations
Yasuhito Takashima, Mitsuru Ohata, Tetsuya Tagawa, Fumiyoshi Minami

Osaka University, Suita, Osaka, Japan

Bart Simoens, Michel H. Lefebvre

Royal Military Academy, Brussels, Belgium

Robert E. Nickell

Applied Science & Technology, San Diego, CA

Kenji Koide, Ryusuke Kitamura, Koichi Hayashi, Joseph K. Asahina

Kobe Steel, Ltd., Kobe, Japan

Paper No. PVP2011-57313, pp. 105-112; 8 pages
doi:10.1115/PVP2011-57313
From:
  • ASME 2011 Pressure Vessels and Piping Conference
  • Volume 5: High-Pressure Technology; Nondestructive Evaluation; Nuclear Engineering
  • Baltimore, Maryland, USA, July 17–21, 2011
  • Conference Sponsors: Pressure Vessels and Piping Division
  • ISBN: 978-0-7918-4455-7
  • Copyright © 2011 by ASME

abstract

The plastic damage caused by multiple dynamic loading and its influence on the ductility and toughness of 3.5%Ni-steel (SA203E) and C-steel (SA516M) were examined for the discussion of integrity design of detonation chambers. V-notched specimens and hourglass specimens were welded on 1/7-scale model of a 1-ton explosive class detonation chamber and subjected to 30 detonation shots. It has been indicated that 30 detonation shots caused pre-strain in the specimens. The ductility was reduced by the pre-strain. The Charpy impact toughness was affected as well in a lower temperature. It has been noted that the damage is developed with fatigue crack growth at notch root of the V-notched specimen.

Copyright © 2011 by ASME
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