Results 111 to 120 of about 62,092 (268)

Advanced Electron Microscopy and Microcomputed Tomography Analysis of Single‐Crystal Ni‐Base Superalloys After Short‐Term Multiaxial Creep

open access: yesAdvanced Engineering Materials, EarlyView.
This work studies the anisotropic behavior of circular notched tensile specimens of Ni‐base superalloy single crystals during high‐temperature tensile creep along [001], [110], and [111]. Correlative scale‐bridging imaging of specimens reveals early rupture along [110] because 1) plastic deformation proceeds faster at notch center; 2) more (brittle ...
Leonardo Agudo Jácome   +6 more
wiley   +1 more source

The Solution of Massive Hydraulic Fracturing of Shale Gas in China

open access: yesShiyou jixie, 2018
According to the characteristics of shale gas exploration and development in China, through the analyses of the massive shale gas fracturing complete equipment in North America and the geographical distribution of shale gas in China, solution of ...
Zhang Shuli, Li Xincheng
doaj  

Determination of pre-Darcy/Darcy/non-Darcy seepage patterns in coal around extraction boreholes

open access: yesMeitan xuebao
The stress concentration phenomenon in extraction drill holes easily leads to different degrees of damage to the coal body structure around the holes, and the redistribution of stress also causes the formation of a large number of pores and fissure ...
Mingkun PANG   +4 more
doaj   +1 more source

Research and Application of Fiber Carrying Proppant Fracturing Technology in Eastern Ordos Basin

open access: yesShiyou jixie, 2021
When conventional fracturing technology is used to conduct fracturing in the gas reservoirs of eastern Ordos Basin, some problems such as low gas flow rate, poor rate maintenance capability and difficult development often occur.
Hu Guangming, Ji Suibo, Gao Yu
doaj  

Acid Fracturing: New Insigths On Acid Etching Patterns From Experimental Investigation

open access: yes, 2015
Nowadays, it is commonplace to say that acid fracture conductivity depends on the fracture face asperities. Does it really depend on it? Almost thirty years ago, someone wrote, "We believe the conductivity measured in these tests is mainly due to the ...
Neumann L.F.   +3 more
core  

Influence of Scan Strategies in Electron Beam Powder Bed Fusion on Solidification, Microstructure, and High‐Temperature Compressive Properties of γ′‐Strengthened Inconel 738LC

open access: yesAdvanced Engineering Materials, EarlyView.
Experiments and thermophysical simulations were conducted to investigate the electron beam powder bed fusion electron beam (PBF‐EB/M) process for the γ′‐strengthened nickel‐based superalloy Inconel 738LC. The results demonstrate the impact of process‐induced microstructural variations on high‐temperature mechanical behavior, providing a basis for ...
Jan Niklas Petenati   +11 more
wiley   +1 more source

Explicit-implicit XFEM for Hydraulic Fracturing with emphasis on transport models on curved crack surfaces

open access: yes, 2019
The eXtended Finite Element Method (XFEM) has developed to a standard tool in fracture mechanics. The method enriches the approximation space such that inner-element cracks are considered without loss of accuracy.
Fries, Thomas-Peter
core   +1 more source

Effect of CO2 Fracturing Parameters on Well Temperature and Pressure

open access: yesShiyou jixie, 2018
Since the thermo physical properties of supercritical CO2 change drastically in the flow, the calculation method of common physical properties is not suitable.
Lan Jianping, Gong Qun, Xu Zhiguo
doaj  

Fresh water reduction technologies and strategies for hydraulic fracturing : case study of the Eagle Ford shale play, Texas [PDF]

open access: yes, 2014
textHydraulic fracturing has unlocked a tremendous resource across the United States and around the world—shale. However, these processes have also come with a myriad of potential environmental effects, including a substantial demand for water. Hydraulic
Leseberg, Megan Patrice
core  

Continuous Stiffness Graded Metal–Ceramic Femoral Stems: UMAT‐Based Design and Finite Element Assessment

open access: yesAdvanced Engineering Materials, EarlyView.
Functionally graded metal–ceramic femoral stems are engineered through continuous UMAT‐based stiffness tailoring, eliminating discrete material interfaces while enhancing biomechanical compatibility. Low‐index power‐law gradation optimizes load transfer, reduces stress shielding, and controls implant–bone micromotion, highlighting a materials‐design ...
Rihem Nouira, Sameh Elleuch, Hanen Jrad
wiley   +1 more source

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