Results 101 to 110 of about 57,900 (317)

Study of texture changes in the emptiness of rocks under the tension conditions by electron microscopy methods

Georesursy
On the example of an oil deposit of the Vereisk age which is one of the deposits in the Volga-Urals, lithotypes of rocks are distinguished, characterized by a fundamentally different structure of the void space.
B. M. Osovetsky, K. P. Kazymov, I. Y. Kolychev, Ya. V. Savitckii, S. V. Galkin   +4 more
doaj   +1 more source

What good is Linear Elastic Fracture Mechanics in Hydraulic Fracturing

, 2019
Fluid-driven fracture presents an interesting case of crack elasticity and fracture propagation nonlinearly coupled to fluid flow. With the exceptions of a few numerical studies, previous hydraulic fracture modeling efforts have been based on the premise
Garagash, Dmitry
core  

Karl Popper and the Mechanisms of Hydrogen Embrittlement

Advanced Engineering Materials, EarlyView.
Representation of the beginning of loss of ductility rather than embrittlement. Small concentrations of hydrogen in a diffusible form within iron are well‐established to harm the mechanical integrity of steels. There are theories that attempt to explain the pernicious role of hydrogen.
H. K. D. H. Bhadeshia
wiley   +1 more source

Evaluation of quality of experimental white‑grain rice populations in accelerated breeding by grain size and vitreosity

Siberian Journal of Life Sciences and Agriculture
Background. In marker-assisted rice breeding, the accelerated development of varieties with superior grain quality traits through advanced biotechnological approaches requires the generation of segregating rice populations followed by phenotyping of ...
Natalya G. Tumanyan, Elina Yu. Papulova, Liana M. Lalayan, Svetlana S. Chizhikova, Tatyana B. Kumeiko   +4 more
doaj   +1 more source

Shale Kerogen: Hydraulic Fracturing Fluid Interactions and Contaminant Release

, 2018
The recent increase in unconventional oil and gas exploration and production has prompted a large amount of research on hydraulic fracturing, but the majority of chemical reactions between shale minerals and organic matter with fracturing fluids are not ...
Dustin, Megan K., John R. Bargar (1334664), Megan K. Dustin, Claresta Joe-Wong, Jew, Adam D., Anna L. Harrison (1761820), John R. Bargar, Gordon E. Brown (1890517), Gordon E. Brown, Bargar, John R., Brown, Gordon E., Anna L. Harrison, Kate Maher (1445284), Adam D. Jew, Dana L. Thomas (5635799), Joe-Wong, Claresta, Megan K. Dustin (5635796), Thomas, Dana L., Harrison, Anna L., Claresta Joe-Wong (2043250), Kate Maher, Adam D. Jew (1686778), Dana L. Thomas, Maher, Kate   +23 more
core   +1 more source

Microstructure‐Controlled Crack Propagation and Fracture Resistance in MoSiBTiC Alloy Revealed by Multiscale Extended Finite Element Method Modeling

Advanced Engineering Materials, EarlyView.
A two‐dimensional multiscale finite element analysis framework was established for the first‐generation MoSiBTiC alloy, and the mechanical and fracture‐related parameters of the constituent phases were calibrated through experiments and simulations. The framework provides a basis for analyzing crack propagation behavior in its complex microstructure ...
Junfeng Du, Takahiro Kaneko, Xinyu Yan, Takahito Ohmura, Kyosuke Yoshimi   +4 more
wiley   +1 more source

Discrimination criteria for interaction behavior between hydraulic fractures and natural fractures based on energy balance principle

Youqi dizhi yu caishoulu
The interaction between hydraulic fractures and natural fractures has an important influence on the distribution and complexity of fracture networks after fracturing.
ZHANG Wang, ZHAO Haifeng, SHI Hongwei, WANG Zongfei   +3 more
doaj   +1 more source

Fracture line distribution of olecranon fractures

Archives of Orthopaedic and Trauma Surgery, 2016
The association between specific olecranon fracture characteristics (e.g., displacement, fragmentation, subluxation) and fracture line distribution might help surgeons predict intra-articular fracture location based on fracture characteristics that can be determined on radiographs. We hypothesized that fracture mapping techniques would reveal different
Lubberts, Bart, Mellema, Jos J., Janssen, Stein J., Ring, David   +3 more
openaire   +3 more sources

Hydrogen‐Assisted Fracture of Iron‐Based Fe–Ni–Al Alloys

Advanced Engineering Materials, EarlyView.
Principal relations and fracture mechanisms of single‐phase and precipitate‐strengthened Fe–Ni–Al alloys subjected to prior electrochemical hydrogen charging are identified. The mechanisms of hydrogen effect on strength and microhardness are discussed, including hydrogen‐induced increase in microhardness and the role of hydrogen in fracture behavior ...
Nataliya Yadzhak, Olha Zvirko, Rostyslav Leshchak, Hryhoriy Nykyforchyn   +3 more
wiley   +1 more source

Development of a three-dimensional compositional hydraulic fracturing simulator for energized fluids

, 2013
textCurrent practices in energized treatments, using gases and foams, remain rudimentary in comparison to other fracturing fluid technologies. None of the available 3D fracturing models for incompressible water-based fluids have been able to capture the ...
Ribeiro, Lionel Herve Noel
core   +1 more source