Results 51 to 60 of about 458,298 (306)

Influence of stress sensitive differences on natural well productivity in fractured reservoirs

Youqicang pingjia yu kaifa, 2019
In order to study the productivity characteristics of low permeability reservoirs with natural fractures, we established a prediction model of natural fractured reservoir productivity considering stress sensitivity differences between matrix and natural ...
Cao Jun, Tang Hai, Lyu Dongliang, Wu Jinwei   +3 more
doaj  

Grain boundary energies and cohesive strength as a function of geometry

, 2008
Cohesive laws are stress-strain curves used in finite element calculations to describe the debonding of interfaces such as grain boundaries. It would be convenient to describe grain boundary cohesive laws as a function of the parameters needed to ...
D. E. Spearot, D. Wolf, D. Wolf, D. Wolf, E. Iesulauro, E. Iesulauro, F. Sansoz, G. Palumbo, J. P. Hirth, James P. Sethna, M. Falk, M. P. Allen, P. H. Pumphrey, R. J. Harrison, Valerie R. Coffman, W. Bollmann, Y. I. Frenkel, Y. Ishida   +17 more
core   +1 more source

Influence of geometry, elasticity properties and boundary conditions on the Mode I purity in sandwich composites [PDF]

, 2020
The present work addresses the problem of skin/core debonding in sandwich materials. The main goal is to carry out parametric analyses for studying the influence of various materials, geometrical parameters and boundary conditions of sandwich fracture ...
Burlayenko, V. N., Pietras, D., Sadowski, Tomasz   +2 more
core  

Linear elastic fracture mechanics predicts the propagation distance of frictional slip [PDF]

, 2014
When a frictional interface is subject to a localized shear load, it is often (experimentally) observed that local slip events initiate at the stress concentration and propagate over parts of the interface by arresting naturally before reaching the edge.
Ampuero, Jean-Paul, Kammer, David S., Molinari, Jean-François, Radiguet, Mathilde   +3 more
core   +2 more sources

Zein‐Based Adhesives: Sustainable Extraction and Application in Bioadhesive Technologies

Advanced Engineering Materials, EarlyView.
Zein is extracted from corn gluten meal using a simple and scalable process with high yield (~90%). The resulting protein is applied in bioadhesives modified with Ca2+ and Fe3+ ions, exhibiting substrate‐dependent adhesion. The findings demonstrate competitive bonding performance and highlight the role of ionic interactions in tuning adhesion ...
Paula Bertolino Sanvezzo, Daniela Winsley Valereto Friozi, Vinícius de Oliveira, Marcia Cristina Branciforti   +3 more
wiley   +1 more source

Fracture parameter diagnostic method during staged multi-cluster fracturing based on distributed temperature sensing

Petroleum Exploration and Development
The Carter model is used to characterize the dynamic behaviors of fracture growth and fracturing fluid leakoff. A thermo-fluid coupling temperature response forward model is built considering the fluid flow and heat transfer in wellbore, fracture and ...
Cao WEI, Haitao LI, Xiaohua ZHU, Nan ZHANG, Hongwen LUO, Kun TU, Shiqing CHENG   +6 more
doaj   +1 more source

Investigation of Laser Ablation and Brush Pre‐Treatments for AlCu Cold Roll Bonding in Oxygen‐Free Conditions

Advanced Engineering Materials, EarlyView.
It is shown that laser ablation pretreatment under oxygen‐free conditions enables copper–aluminium bonding at significantly lower deformation degrees and improved properties compared to mechanical brushing. Laser ablation further increases interface contact area and induces favourable residual stress states and microstructural compatibility ...
Khemais Barienti, Finn‐Lennard Janthur, Selina Raumel, Sascha Jan Zimmermann, Sarah Seffer, René Gustus, Sebastian Herbst, Marc C. Wurz, Ludger Overmeyer, Wolfgang Maus‐Friedrichs, Hans Jürgen Maier, Florian Nürnberger   +11 more
wiley   +1 more source

Numerical calibration for fracture parameters of three-point bending semi-circular specimens

Frontiers in Earth Science
This study aims to refine the fracture characterization of three-point bending semi-circular specimens used in rock fracture toughness assessments. The primary objective is to improve the accuracy of such evaluations by developing numerical simulations ...
Jun Wang, Haoyi Wang, Haoyi Wang, Zongquan Yao, Zongquan Yao, Qi Li, Chaodong Wu   +6 more
doaj   +1 more source

A capacity prediction model for the low porosity fractured reservoirs in the Kuqa foreland basin, NW China

Petroleum Exploration and Development, 2013
Based on the description of fracture parameters and the relation between fracture development degree and capacity, a capacity prediction method was discussed of low porosity fractured sandstones in the Kuqa region. For coring section, fracture parameters
Feng YANG, Chunqi ZHU, Xinhai WANG, Haizhou QU, Fuxiang ZHANG, Xinnian NIU   +5 more
doaj   +1 more source

Robust Hydraulic Fracture Monitoring (HFM) of Multiple Time Overlapping Events Using a Generalized Discrete Radon Transform

, 2013
In this work we propose a novel algorithm for multiple-event localization for Hydraulic Fracture Monitoring (HFM) through the exploitation of the sparsity of the observed seismic signal when represented in a basis consisting of space time propagators. We
Aeron, Shuchin, Ely, Gregory
core   +1 more source