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.
- Pressure Vessels and Piping Division
Damage Caused by Dynamic/Cyclic Loading of Detonation Chamber
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Takashima, Y, Ohata, M, Tagawa, T, Simoens, B, Lefebvre, MH, Nickell, RE, Koide, K, Kitamura, R, Hayashi, K, Asahina, JK, & Minami, F. "Damage Caused by Dynamic/Cyclic Loading of Detonation Chamber." Proceedings of the ASME 2011 Pressure Vessels and Piping Conference. Volume 5: High-Pressure Technology; Nondestructive Evaluation; Nuclear Engineering. Baltimore, Maryland, USA. July 17–21, 2011. pp. 105-112. ASME. https://doi.org/10.1115/PVP2011-57313
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