Deformation and Fracture Mechanisms and Structural Changes in Coarse–Grained Copper under Shock–Wave Loading
G. G. Savenkov1, Yu. I. Meshcheryakov2, B. K. Barakhtin1, and N. V. Lebedeva1
1St. Petersburg State Marine Technical University, St. Petersburg, 190008 Russia
2Institute of Problems of Mechanical Engineering, Russian Academy of Sciences, St. Petersburg, 199178 Russia
Keywords: spall strength, self-similarity, fractal dimension
Abstract
Results of experiments on shock-wave deformation of M2 copper under uniaxial loading are presented. Light, scanning, and transmission electron microscopy methods are used to reveal specific features of mechanisms of deformation and fracture of copper during the formation of a main spall crack. The parameters of spall strength, damage, and self-similarity of the spall crack contour are determined.
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