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Chinese Journal of High Pressure Physics  > 2011  >  25(2): 188-192 .
JIN Shan, ZHANG Shi-Wen, LONG Jian-Hua. Experimental Study on the Influences of Defects on Expanding Fracture of a Metal Cylinder[J]. Chinese Journal of High Pressure Physics, 2011, 25(2): 188-192 . doi: 10.11858/gywlxb.2011.02.017
Citation: JIN Shan, ZHANG Shi-Wen, LONG Jian-Hua. Experimental Study on the Influences of Defects on Expanding Fracture of a Metal Cylinder[J]. Chinese Journal of High Pressure Physics, 2011, 25(2): 188-192 . doi: 10.11858/gywlxb.2011.02.017
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Experimental Study on the Influences of Defects on Expanding Fracture of a Metal Cylinder

doi: 10.11858/gywlxb.2011.02.017

  • National Key Laboratory of Shock Wave and Detonation Physics, Institute of Fluid Physics, CAEP, Mianyang 621900, China

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  • Corresponding author: ZHANG Shi-Wen
  • Received Date: 08 Dec 2009
  • Rev Recd Date: 06 May 2010
  • Publish Date: 15 Apr 2011
    Abstract
  • By means of high-speed frame photography, clear images of the expanding fracture of two metal cylinders with and without a notch were obtained. The experimental results showed that the notch defect would significantly accelerate the fracture process of the cylinder. For the metal cylinder containing a prefabricated notch, the leakage time of detonation products (5.5 s) is earlier than that without a notch, which can be satisfactorily explained by stress or strain concentration. Furthermore, using Mott wave theory, it is well explained that the fragments of the metal cylinder with a notch defect are smaller and more abundant than that without defect.

     

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    • References(14)
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