Dynamical features of fracture formation

Lementueva, R. A.; Bubnova, N. Ya.; Treusov, A. V.

doi:10.1134/s1069351313060098

Cited by 2 publications

(1 citation statement)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Within the framework of modern concepts of mechanics and strength physics, the destruction of materials under external energy influences is a spatio-temporal process caused by the formation and development of defects at various structural (scale) levels. Quite close attention is paid to this problem and a lot of experimental and analytical studies have been devoted, some of which reflect the works [1][2][3][4][5]. The patterns of this process are largely determined by the structure of materials, which is characterized by the shape and size of grains, porosity, the presence of microdefects, and along with the chemical composition determines the physical properties of materials, including strength.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study of Dynamic Fracture in Structurally Heterogeneous Materials on the Example of Rocks

Kochanov

2023

Rev. Adv. Mater. Technol.

View full text Add to dashboard Cite

The development of micro- and macrocracks in rocks under dynamic influence is considered. The important role of structural features of rocks on this process is noted. Based on ultrasound studies, it is shown that rock samples, as a rule, are heterogeneous and differ in the distribution of longitudinal wave velocity values in certain local regions. The initial heterogeneity determines the spatial development of the microcrack development area under external influence. Using optical microscopy and computer X-ray microtomography, the parameters of microcracks were determined on the example of granite after exposure. Experimental studies using optical, electron and scanning confocal laser microscopy were performed to evaluate the parameters of microcracks in granite. Structural features of rocks affect the nature of the development, trajectory and speed of crack propagation.

show abstract