Results 41 to 50 of about 98,352 (281)

Multimodal Mechanical Testing of Additively Manufactured Ti6Al4V Lattice Structures: Compression, Bending, and Fatigue

Advanced Engineering Materials, EarlyView.
In this experimental study, the mechanical properties of additively manufactured Ti‐6Al‐4V lattice structures of different geometries are characterized using compression, four point bending and fatigue testing. While TPMS designs show superior fatigue resistance, SplitP and Honeycomb lattice structures combine high stiffness and strength. The resulting
Klaus Burkart, Jonas Schmidt, Anastasiya Toenjes, Johanna Eisenträger   +3 more
wiley   +1 more source

Fully three-dimensional propagation model of horizontal borehole hydraulic fractures in strata under the effect of bedding planes

Energy Exploration & Exploitation, 2018
The bedding plane effect will occur when hydraulic fractures propagate to the bedding plane in sedimentary strata, resulting in the “≠,” “工,” or “/” shaped fracture morphology.
Bingxiang Huang, Jiangwei Liu
doaj   +1 more source

From invasion percolation to flow in rock fracture networks

, 2011
The main purpose of this work is to simulate two-phase flow in the form of immiscible displacement through anisotropic, three-dimensional (3D) discrete fracture networks (DFN).
Abelin, Adler, Araújo, Araújo, Bill Lanyon, Blunt, Broadbent, Cacas, Chandler, Dershowitz, Falk K. Wittel, Fisher, Glass, Glass, Gustafson, Hans J. Herrmann, Herrmann, Herrmann, Holt, Hunt, Hunt, Huseby, Ioannidis, Kemeny, Khamforoush, Khamforoush, Koudina, Lenormand, Makse, Mazurek, Meakin, Neuman, Normand, Nuno A.M. Araújo, Oliveira, Oliveira, Priest, Sahimi, Sahimi, Sahimi, Salomon J. Wettstein, Sheppard, Stanley, Stauffer, Wilkinson, Wilson, Xu   +46 more
core   +1 more source

Unidirectional Tape‐Based Composites from Hemp and Pineapple Leaf Fiber: Mechanical Performance in Conventional and Bio‐Based Matrices

Advanced Engineering Materials, EarlyView.
The study investigates novel semi‐finished products made of unidirectionally arranged hemp or pineapple leaf fiber‐reinforced composites produced from different matrices. The materials are analyzed in terms of their mechanical and interfacial properties and void content.
Nina Graupner, Raja Bade, Valentin Ackermann, Roja M. Baumann, Corvin Bischoff, Jona F. Ebeling, Oskar Glenz, Marlo Groh, Jonathan Groth, Finja Hiller, Tom Hirschmüller, Felix Menke, Syntcha Ngantchou Lecdou, Mika Ohler, Daniel Rafii Vardiny, Darius Richter, Dario Röper, Henrik Schumacher, Theresa Stein, Benjamin Vorbeck, Elisabeth Wermter, Kay Kölzig, Jörg Müssig   +22 more
wiley   +1 more source

Weakening effects of hydraulic fracture in hard roof under the influence of stress arch

International Journal of Mining Science and Technology, 2018
For the problem of hydraulic fracture propagation when weakening the hard roof in fully mechanized top-coal caving stope of ultra-thick coal seam, based on the stress arch theory and the fracture mechanics, a two-dimensional model for hydraulic fracture ...
Binwei Xia, Xuan Zhang, Bin Yu, Jinlong Jia   +3 more
doaj   +1 more source

Microstructural Evolution and Vacancy Defect Formation in Mn–Mo–Ni RPV Steel Under Low Cycle Fatigue: Insights From EBSD and PALS

Advanced Engineering Materials, EarlyView.
Low‐cycle fatigue damage in Mn–Mo–Ni reactor pressure vessel steel is examined using a combined electron backscatter diffraction and positron annihilation lifetime spectroscopy approach. The study correlates texture evolution, dislocation substructure development, and vacancy‐type defect formation across uniform, necked, and fracture regions, providing
Apu Sarkar, Dhanadeep Dutta, G. Bharat Reddy   +2 more
wiley   +1 more source

Fracture propagation model accounting for intersection among hydraulic fractures and natural fractures in three-dimensional space

Meitan xuebao
Due to development of a large number of natural fractures in unconventional gas and oil reservoirs, the fracture expansion patterns during hydraulic fracturing are complicated. It is crucial to clarify the intersecting and expanding mechanical mechanisms
Yuwei LI, Yanru YANG, Aiwen WANG, Lianpeng DAI   +3 more
doaj   +1 more source

Hydraulic Fracturing Growth in Fracture Reservoirs Using Analytical and Numerical Simulation: T-Type Intersections

Journal of Chemical and Petroleum Engineering, 2013
Hydraulic fracture diagnostics have highlighted the potentially complex natural of hydraulic fracture geometry and propagation. This has been particularly true in the cases of hydraulic fracture growth in naturally fractured reservoirs, where the induced
Jaber Taheri Shakib, hossein jalalifar
doaj   +1 more source

On‐Demand Activation of Thin Alginate Shell Encapsulated Volatile Liquid for Untethered Pneumatic Soft Actuation

Advanced Engineering Materials, EarlyView.
Phase‐changing liquids enable untethered pneumatic actuation in soft robotics but suffer from volatility and storage challenges. This work reports a simple method to encapsulate Novec 7000 within micron‐thin alginate shells via in situ injection and ionic crosslinking.
Rayan A. M. Basodan, Jack Keddie, Byoungyoul Park, Hyun‐Joong Chung   +3 more
wiley   +1 more source

Numerical simulation on the simultaneous stress interference of parallel multiple hydraulic fractures

Energy Exploration & Exploitation, 2021
During horizontal well staged fracturing, there is stress interference between multiple transverse fractures in the same perforation cluster. Theoretical analysis and numerical calculation methods are applied in this study.
Weiyong Lu, Changchun He
doaj   +1 more source