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Static mechanical properties and damage evolution characteristics of selected rocks in diversion tunnel under uniaxial loading [PDF]

open access: yesArchives of Civil Engineering
An in-depth understanding of the mechanical properties and damage and fracture mechanism of selected rocks in a diversion tunnel plays an important role in promoting the efficient construction and safety of rock blasting excavation in a diversion tunnel.
Rongzhou Yang   +4 more
doaj   +1 more source

Damage control surgery: a constant evolution

open access: yesColombia Medica, 2020
The story of trauma resuscitation is similar to that of many other advances in medicine: described, forgotten, reinvented, ridiculed, and finally accepted. Even after acceptance, the concepts go through periods of neglect and indifference before they are tried and enhanced, till the next advance.
Rao Ivatury   +2 more
openaire   +4 more sources

Effect of Fracture Coincidence on Mechanical Properties and Damage Evolution of Sandstone

open access: yesMeikuang Anquan, 2020
To study the effect of fracture coincidence on mechanical properties and damage evolution of fractured sandstone, five kinds of sandstone specimens with different crack distributions were simulated by RFPA2D software under uniaxial compression test. The
XUE Shipeng
doaj   +1 more source

Damage Evolution and Failure Behavior of Post-Mainshock Damaged Rocks under Aftershock Effects

open access: yesEnergies, 2019
Rock stability has long been a hot topic during underground energy exploitation, but the failure process of rock materials under earthquake effects is extremely complicated, and the failure mechanism still remains unclear.
Zilong Zhou   +5 more
doaj   +1 more source

Evaluation of the Durability and the Property of an Asphalt Concrete with Nano Hydrophobic Silane Silica in Spring-Thawing Season

open access: yesApplied Sciences, 2018
In the spring-thawing season, the high frequency of freeze-soak-scour cycles in the short term is the main cause of pavement damage in the frozen region.
Wei Guo   +3 more
doaj   +1 more source

A review of the research on physical and mechanical properties and constitutive model of rock under THMC multi-field coupling

open access: yes工程科学学报, 2020
The study of multi-field coupling of rocks has been carried out for decades, including the effects of single physical field, two-field coupling, and three-field coupling of rocks. However, the occurrence environment of rock mass in deep mining of mineral
Bing-qian YAN   +4 more
doaj   +1 more source

Damage in Creep Aging Process of an Al-Zn-Mg-Cu Alloy: Experiments and Modeling

open access: yesMetals, 2018
In creep age forming (CAF), large integral panel components of high-strength aluminum alloy can be shaped and strengthened under external elastic loading at an elevated temperature through creep deformation and age hardening, simultaneously. However, the
Chao Lei   +5 more
doaj   +1 more source

The Evolution of Damage Control in Concept and Practice [PDF]

open access: yesClinics in Colon and Rectal Surgery, 2017
AbstractDamage control surgery (DCS) began as an adjunct approach to hemorrhage control, seeking to facilitate the body's innate clotting ability when direct repair or ligation was impossible, but it has since become a valuable instrument for a broader collection of critically ill surgical patients in whom metabolic dysfunction is the more immediate ...
openaire   +2 more sources

Analysis of multiple impact tests’ damage to three-dimensional four-directional braided composites

open access: yesScience and Engineering of Composite Materials, 2022
This article was designed with a plurality of impact tests of three-dimensional four-directional braided composites, and the impact response of specimen impacted by a circular punch was studied.
Yan Shi, Chen Xixi, Zhao Yun
doaj   +1 more source

Investigation of damage evolution and its model of rock-like brittle materials

open access: yesRock and Soil Mechanics, 2021
To investigate the description and evolution of the damage state of rock-like brittle materials, the physical meaning of each elastic modulus method parameter based on the strain equivalence hypothesis and the limitations of the model application are ...
ZHANG Chao, YANG Chu-qing, BAI Yun
doaj   +1 more source

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