| Autor: |
Khesin, G. L., Taratorin, B. I., Sakharov, V. N., Zhavoronok, I. V., Kuz'min, V. S., Kutaeva, G. S., Starchevskii, A. S. |
| Zdroj: |
Journal of Mining Science; November 1976, Vol. 12 Issue: 6 p580-584, 5p |
| Abstrakt: |
The author's investigations show that it is possible to use the optical-polarization method to investigate the stresses in models of certain aspects of the process of rock fracture.The authors suggest a method of modeling the stresses in the neighborhood of stationary cracks in shear or transverse deformation, taking account of interaction between the flanks of the crack in the presence of friction; this permits investigation of a number of problems which have not been solved theoretically.They develop a method of modeling the process of crack propagation under tension. They show that the velocity varies discontinuously. They establish the conditions for branching of a crack. They show that the dynamic stress intensity coefficient depends on the velocity of the crack.They show that it is possible to use dynamic patterns of interference fringes to record the stress waves initiated at various moments during crack propagation during emergence at the free surface or interaction with various types of nonuniformity. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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