Results 61 to 70 of about 31,598 (181)

Influência da forma e do processo de obtenção do entalhe na carga máxima e na energia de fratura de argamassas utilizando o método da cunha para propagação estável de trinca Influence of notch shape and preparation on the maximum load and fracture energy of mortars evaluated by the wedge splitting method for stable crack propagation

Cerâmica, 2009
Este trabalho mostra a influência da forma e do processo de obtenção do entalhe na estabilidade da propagação de trinca em materiais cerâmicos de microestrutura heterogênea e conseqüentemente, na carga máxima e energia de fratura quando esses materiais ...
S. Ribeiro, J. A. Rodrigues
doaj   +1 more source

Age and crack length effects on fracture parameters of dam gallery concrete: Experimental investigation and modeling

Case Studies in Construction Materials
Cracks of varying lengths may occur in galleries throughout dam construction, operation, and management processes. This study investigates the influence of age and crack length on the fracture parameters of gallery concrete, which is crucial for ...
Xiaofeng Gao, Mingli Ji, Yu Hu, Weidong Ruan, Mengxia Zhou, Zhihong Liu   +5 more
doaj   +1 more source

Quantum fields on curved spacetimes and a new look at the Unruh effect

, 2009
We describe a new viewpoint on canonical quantization of linear fields on a general curved background that encompasses and generalizes the standard treatment of canonical QFT given in textbooks.
Moschella, Ugo, Schaeffer, Richard
core   +1 more source

Spatial Modeling of Wedge-Splitting Test on Cylindrical Specimens Using FEM Software

Procedia Engineering, 2017
Abstract This paper discusses numerical models of the wedge-splitting test on cylindrical specimens made of quasi-brittle material. These models are used for predictions of crack/damage propagation and are crucial for the further evaluation of fracture parameters. Validation of these models is made based on experimentally obtained data.
Jiří Klon, Jakub Sobek, Václav Veselý   +2 more
openaire   +1 more source

Towards achieving strong coupling in 3D-cavity with solid state spin resonance

, 2016
We investigate the microwave magnetic field confinement in several microwave 3D-cavities, using 3D finite-element analysis to determine the best design and achieve strong coupling between microwave resonant cavity photons and solid state spins ...
Aubourg, M., Castelletto, S., Cros, D., Delhote, N., Floch, J-M. Le, Madrangeas, V., Tobar, M. E.   +6 more
core   +2 more sources

First-principles modeling of electrostatically doped perovskite systems

, 2010
Macroscopically, confined electron gases at polar oxide interfaces are rationalized within the simple "polar catastrophe" model. At the microscopic level, however, many other effects such as electric fields, structural distortions and quantum-mechanical ...
Massimiliano Stengel, R. Resta
core   +1 more source

Effect of Fiber Orientation on the Fatigue Behavior of Steel Fiber-Reinforced Concrete Specimens by Performing Wedge Splitting Tests and Computed Tomography Scanning

International Journal of Concrete Structures and Materials
This paper shows the relationship, in steel fiber-reinforced concrete, between fiber orientation and fatigue response through the combined use of computed tomography (CT), digital image processing (DIP) software and wedge splitting test (WST).
Dorys C. González, Álvaro Mena-Alonso, Jesús Mínguez, José A. Martínez, Miguel A. Vicente   +4 more
doaj   +1 more source

Charge self-consistent dynamical mean-field theory based on the full-potential linear muffin-tin orbital method: methodology and applications

, 2011
Full charge self-consistence (CSC) over the electron density has been implemented into the local density approximation plus dynamical mean-field theory (LDA+DMFT) scheme based on a full-potential linear muffin-tin orbital method (FP-LMTO).
Aichhorn, Anisimov, Anisimov, Anisimov, Anisimov, Bednorz, Birch, Cuthill, Di Marco, Dudarev, Eriksson, Fernandez, Fetter, Georges, Grechnev, Haule, Hohenberg, Hubbard, Hüfner, I. Di Marco, J.M. Wills, Kamihara, Kang, Katsnelson, Katsnelson, Kodera, Kohn, Kotliar, Kuneš, Kuneš, L. Nordström, Lebègue, Lebègue, Leonov, Lichtenstein, Lichtenstein, Löpez-Aguilar, Minár, Murnaghan, Neubeck, O. Eriksson, O. Grånäs, P. Thunström, Pavarini, Pourovskii, Pourovskii, Ren, Savrasov, Savrasov, Shick, Shick, Stearns, Suzuki, Svane, Sánchez-Barriga, Sánchez-Barriga, T. Björkman, Thalmeier, Thunström, Tie-song, Vinet, Wills, Wills, Wills, Zeng   +64 more
core   +1 more source

Non-destructive evaluation of residual strength distribution of recycled aggregate concrete and bond strength between recycled aggregate concrete and deformed bar with different cover thicknesses after freeze-thaw cycles

Case Studies in Construction Materials
The thickness of a cover significantly influences both the bonding performance and the durability of materials against frost resistance. This research investigates the degradation and damage distribution of fundamental mechanical properties in two ...
Zuohua Li, Haifeng Yang, Zhiyu Tang, Binjie Zhao, Haoheng Lv, Lilin Meng   +5 more
doaj   +1 more source

Evaluation of Fracture Properties of Concrete Using Wedge Splitting Test Method

Journal of the Society of Materials Science, Japan, 2003
The wedge splitting test method developed by Tschegg was applied to investigate the fracture mechanical properties of concrete. The load-displacement curves of concrete, mortar and steel fiber reinforced mortar under the mode I fracture conditions were measured by different notched specimens and wedge splitting procedures.
openaire   +2 more sources