Results 1 to 10 of about 1,581,873 (310)

Relationship Between Carpal Bone Morphology and Distal Radius Fracture Pattern

open access: yesJournal of Contemporary Medicine, 2022
Background: In this study, we examined whether carpal bones (lunate, hamate, capitate) morphologies and fourth metecarp-capitate articulation have an effect on the distal radius fracture pattern.Methods: 206 patients who applied to the emergency ...
Tamer Coşkun   +2 more
doaj   +1 more source

Fracture Behavior of Single-Crystal Sapphire in Different Crystal Orientations

open access: yesCrystals, 2021
In order to study the anisotropy of fracture toughness and fracture mechanism of single-crystal sapphire, the three-point bending tests and the single-edge V-notch beam (SEVNB) were used to test the fracture toughness of A-plane, C-plane, and M-plane ...
Shizhan Huang   +6 more
doaj   +1 more source

An experimental study of the fracture morphology of marble under dynamic loading

open access: yesShuiwen dizhi gongcheng dizhi, 2022
To investigate the fracture morphology characteristics of marble under dynamic loading, the dynamic compression and splitting tests of rock samples under different impact velocities are carried out using the split-Hopkinson pressure bar.
Weixiang WANG   +3 more
doaj   +1 more source

The Effect of Solvent Additions on theMechanical Properties of Epoxy [PDF]

open access: yesEngineering and Technology Journal, 2010
The effect of the TolueneC6H5CH3 and Acetone (CH3)2CO additions on themechanical properties of cured Epoxy is studied. Different weight percentages ofToluene (0, 4, 8, 10 & 14 wt%) and Acetone (0, 3, 5, 8 & 10 wt%) were usedunder curing temperatures (40 ...
Khalid K. Abbass   +2 more
doaj   +1 more source

Influence factors of unpropped fracture conductivity of shale

open access: yesEnergy Science & Engineering, 2020
Hydraulic fracture is widely performed to enhance oil and gas production in the development of unconventional reservoirs. This paper proposes a numerical model for the calculation of the unpropped fracture conductivity of shale.
Cong Lu   +5 more
doaj   +1 more source

Experimental study on stress corrosion of X12Cr13 stainless steel in natural gas environment

open access: yesJournal of Materials Research and Technology, 2020
Uniform experimental design method is applied to the slow strain rate testing of X12Cr13 stainless steel in natural gas environment. The influence of H2S concentration, CO2 concentration, ambient temperature and pressure on stress corrosion ...
Xiaohang Chen   +5 more
doaj   +1 more source

Quantification of the Fracture Complexity of Shale Cores After Triaxial Fracturing

open access: yesFrontiers in Earth Science, 2022
Diagnosing fractures under compression is of great importance in optimizing hydraulic fracturing stimulation strategies for unconventional reservoirs. However, a lot of information, such as fracture morphology and fracture complexity, is far from being ...
Yonghao Zhang   +6 more
doaj   +1 more source

Effects of Silicon on Mechanical Properties and Fracture Toughness of Heavy-Section Ductile Cast Iron

open access: yesMetals, 2015
The effects of silicon (Si) on the mechanical properties and fracture toughness of heavy-section ductile cast iron were investigated to develop material for spent-nuclear-fuel containers. Two castings with different Si contents of 1.78 wt.% and 2.74 wt.%
Liang Song   +3 more
doaj   +1 more source

Study on the Influence of Surface Integrity on Hydrogen Permeation Resistance of Hydrogen Production Reactor Materials

open access: yesApplied Sciences, 2023
Hydrogen permeation reduces a material’s properties and increases the risk of brittle fracture, which causes a potential safety hazard. A workpiece’s hydrogen permeation resistance could be improved by improving its surface integrity through surface ...
Zhiyi Leng   +6 more
doaj   +1 more source

Microstructure and mechanism of adiabatic shear fracture during serrated chip formation of hard machining

open access: yesJournal of Advanced Mechanical Design, Systems, and Manufacturing, 2014
The formation and development of serrated chip morphology and adiabatic shear bands (ASBs) and the microstructure of fracture surfaces in the serrated chips during hard machining of hardened alloy steel are observed, the mechanism of adiabatic shear ...
Chunzheng DUAN, Minjie WANG
doaj   +1 more source

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