Damage reduction of explosively driven spallation by machining v-notch rows on the surfaces of 304 stainless steel plates

• Autorzy: Hiroe T. , Fujiwara K. , Hata H. , Natasato K. , Mizokami K.
• Języki publikacji: EN

Abstrakty

EN

Plane detonation waves generated in the explosive PETN with use of wire-row explosion technique for initiation have been applied to study on spall behaviour for circular plates of 304 stainless steel, and the slanting surface effects on the damage phenomena for conic frustums and circular cones. In this paper, V-notch rows are produced on the free surface of the square plate specimens of the same material and plane shock waves are similarly transferred from the other surface. The cross-sectional observation of tested and recovered specimens shows that remarkable effects on the reduction of spall damages have been achieved in case of appropriate V-notch configurations. The e?ect seems to come obviously from weakened interaction of release waves due to the dispersion of directions for reflection waves, and a hydro-code. Autodyn 2D/3D has successfully reproduced the experimental results numerically, suggesting a notch parameter chart for spall damage evaluation.

Słowa kluczowe

EN

damage; stainless steel; V-notch

PL

zniszczenie; stal nierdzewna; karb trójkątny

• Wydawca: Instytut Podstawowych Problemów Techniki PAN
• Czasopismo: Engineering Transactions
• Rocznik: 2011
• Tom: Vol. 59, iss. 1
• Strony: 5--13
• Opis fizyczny: Bibliogr. 5 poz., rys., wykr.

Twórcy

autor

Hiroe T.

autor

Fujiwara K.

autor

Hata H.

autor

Natasato K.

autor

Mizokami K.

• Department of Mechanical System Engineering, Kumamoto University Kumamoto, Japan,

Bibliografia

• 1. F. Tuler and B. M. Butcher, Criterion for the Time Dependence of Dynamic Fracture,International Journal of Fracture Mechanics, 4, 431–437, 1968.
• 2. T. Hiroe, K. Fujiwara, Matsuo Hideo, and N, N. Thadhani, Explosively Produced Spalling in Metals and Its Loading Effects, Proceedings of the 4th International Symposium on Impact Engineering, A. Chiba, S. Tanimura, and K. Hokamoto [Eds.], Elsevier Science Ltd., Oxford, 851–856, 2001.
• 3. T. Hiroe, K. Fujiwara, H. Hata, and Y. D. Tsutsumi, Spall Fracture of Metallic Circular Plates, Vessel Endplates and Conical Frustums Driven by Direct Explosive Loads, Proceedings of the Conference of the APS Topical Group on Shock Compression of Condensed Matter, M. Elert, M.D. Furnish, R. Chau, N. Holmes and J. Nguyen [Eds.], American Institute of Physics, New York, 537–540, 2007.
• 4. K. Nakasato, T. Hiroe, K. Fujiwara, H. Hata, The Effect of Slanting Side Surfaces on the Spall Fracture Behaviour of Metallic Plates Induced by Explosive Shock Waves and Its Application to Novel Plates Structures for Damage Reduction, Proceedings of International Workshop on Explosion, Shock Wave and Hypervelocity Phenomena 2008, pp. 54–57, Kumamoto University, Kumamoto, 2008.
• 5. D. J. Steinberg, Equation of State and Strength Properties of Selected Materials, LLNL Report UCRL-MA-106439, 1991.