Searched for: subject:"anisotropy"
(1 - 20 of 59)

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Siroky, Georg (author), Kraker, Elke (author), Rosc, Jördis (author), Kieslinger, Dietmar (author), Brunner, Roland (author), van der Zwaag, S. (author), Kozeschnik, Ernst (author), Ecker, Werner (author)
This work provides an analysis of X-ray micro computed tomography data of Sn-xBi solders with x = 20, 30, 35, 47, 58 wt.% Bi. The eutectic thickness, fraction of eutectic and primary phase are analyzed. Furthermore, the 3D data is evaluated by means of morphology parameters, such as, shape complexity, flatness, elongation and mean intercept...
journal article 2021
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Eres-Castellanos, Adriana (author), Hidalgo Garcia, J. (author), Zorgani, Muftah (author), Jahazi, Mohammad (author), Toda-Caraballo, Isaac (author), Caballero, Francisca G. (author), Garcia-Mateo, Carlos (author)
The bainitic ferrite plate thickness is the main parameter that controls the strength of this type of microstructures. Such thickness has been proved to mainly depend on the austenite yield strength, the driving force for the transformation and the transformation temperature. However, no research has focused on how these parameters evolve...
journal article 2021
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Kaandorp, Mikael L.A. (author), Dwight, R.P. (author)
A novel machine learning algorithm is presented, serving as a data-driven turbulence modeling tool for Reynolds Averaged Navier-Stokes (RANS) simulations. This machine learning algorithm, called the Tensor Basis Random Forest (TBRF), is used to predict the Reynolds-stress anisotropy tensor, while guaranteeing Galilean invariance by making use...
journal article 2020
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Douma, L.A.N.R. (author)
Mudstones play an important role in hydrocarbon exploration and production, carbon capture and storage, and nuclear waste disposal. The high concentration of clay minerals contribute to the high intrinsic anisotropy (e.g., velocity, strength, permeability, and resistivity changes with direction) of mudstones. This high anisotropy complicates,...
doctoral thesis 2020
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Kancharla, Varun (author)
Cyclic loading tends to affect the strength and stiffness parameters of soils, degrade its structure and results in accumulation of the excess pore water pressure. Such behaviour often leads to premature failure of the soils. Over the past few decades, geotechnical research community has developed numerous constitutive models to predict the...
master thesis 2019
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Gunashekar, Deepthishre (author)
Polymer composites are found to have high performance efficiency because of its highly flexible polymer matrix and stiff fibres or functional fillers. The matrix and the reinforcements are two main components for a strong and tough composite. The performance of these composites highly depend on the material property of the matrix and the...
master thesis 2019
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Wang, Zhaojun (author), Tian, B. (author), Boom, Remko (author), van der Goot, Atze Jan (author)
Dense calcium caseinate dispersions can be transformed into hierarchically fibrous structures by shear deformation. This transformation can be attributed to the intrinsic properties of calcium caseinate. Depending on the dispersion preparation method, a certain amount of air gets entrapped in the sheared protein matrix. Although anisotropy is...
journal article 2019
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Dong, Xichao (author), Hu, Jiaqi (author), Hu, Cheng (author), Li, Y. (author), Sun, Shiyu (author)
The sub-satellite track of geosynchronous synthetic aperture radar (GEO SAR) presents the figure "8" or "O", which causes the great changes of platform motion direction and the different projection of anisotropic irregularities along the line-of-sight (LOS) direction. Due to the almost equal angle velocity to that of Earth, the GEO SAR has...
journal article 2019
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Siskins, M. (author), Lee, M. (author), Alijani, F. (author), Van Blankenstein, Mark R. (author), Davidovikj, D. (author), van der Zant, H.S.J. (author), Steeneken, P.G. (author)
Two-dimensional (2D) materials with strong in-plane anisotropy are of interest for enabling orientation-dependent, frequency-tunable, optomechanical devices. However, black phosphorus (bP), the 2D material with the largest anisotropy to date, is unstable as it degrades in air. In this work we show that As<sub>2</sub>S<sub>3</sub> is an...
journal article 2019
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Wang, Zhaojun (author), Tian, B. (author), Boom, Remko (author), van der Goot, Atze Jan (author)
Calcium caseinate dispersions can be transformed into anisotropic, fibrous materials using the concept of shear-induced structuring. The aim of this study is to further investigate the relative importance of air bubbles and protein on the mechanical anisotropy of calcium caseinate material. In this study, the effect of air on mechanical...
journal article 2019
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Rans, C.D. (author), Michielssen, J. (author), Walker, M.S. (author), Wang, W. (author), Hoen-Velterop, Ludmila ’t (author)
A challenge in developing an in-depth understanding of the crack growth resistance of Additively Manufactured materials is the fact that their mechanical properties have been shown to be both process and part-geometry dependent. Up to now, no studies have investigated the influence of off-axis (beyond the three orthogonal build orientations)...
journal article 2018
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Stoop, Nick (author)
Levees are earthen structures that are designed to protect land from flooding and are commonly composed of impervious soils and built on sandy foundations. They are sensitive to an erosion process that is known as piping. After several years of investigation into piping, Sellmeijer proposed design rules by curve fitting results of a numerical...
master thesis 2018
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Verschuur, D.J. (author), Alshuhail, A.A. (author)
Since the Earth is predominately anisotropic, the anisotropy of the medium needs to be included in seismic imaging to avoid mispositioning of reflectors and unfocused images. Deriving accurate anisotropic velocities from the seismic reflection measurements is a highly nonlinear and ambiguous process. To mitigate the nonlinearity and trade-offs...
journal article 2018
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de Vries, F.K. (author), Shen, J. (author), Skolasinski, R.J. (author), Nowak, M.P. (author), Varjas, D. (author), Wang, L. (author), Wimmer, M.T. (author), Zwanenburg, F.A. (author), Li, A. (author), Kölling, S. (author), Verheijen, M.P.A.M. (author), Bakkers, E.P.A.M. (author), Kouwenhoven, Leo P. (author)
Low dimensional semiconducting structures with strong spin-orbit interaction (SOI) and induced superconductivity attracted great interest in the search for topological superconductors. Both the strong SOI and hard superconducting gap are directly related to the topological protection of the predicted Majorana bound states. Here we explore the...
journal article 2018
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Valliappan, Valliappan (author), Remmers, J. J.C. (author), Barnhoorn, A. (author), Smeulders, D.M.J. (author)
In this paper, we present a two-dimensional numerical model for modelling of hydraulic fracturing in anisotropic media. The numerical model is based on extended finite element method. The saturated porous medium is modelled using Biot’s theory of poroelasticity. An enhanced local pressure model is used for modelling the pressure within the...
journal article 2017
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Rocha, I.B.C.M. (author), Raijmaekers, S (author), van der Meer, F.P. (author), Nijssen, R. P.L. (author), Fischer, H. R. (author), Sluys, Lambertus J. (author)
A combined experimental and numerical investigation is conducted on the anisotropic water diffusion behaviour of unidirectional glass/epoxy composites. Experimental diffusivity values are obtained by immersing thin material slices for each of its planes of orthotropy extracted from a thick composite panel and interphase measurements are...
journal article 2017
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Hinkofer, Thomas (author)
With an increased demand for renewable energy sources, geothermal developments have moved into the spotlight, including sedimentary structures. In the western part of the Netherlands, cretaceous sandstone bodies are already in use for the geothermal energy production. However, these reservoirs are generally producing water at temperatures less...
master thesis 2017
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Gorter, Wilbert (author)
Allerlei diffusieverschijnselen in de natuurkunde kunnen omschreven worden<br/>met de Poissonvergelijking op een gebied met te kiezen randvoorwaarden. Er zijn echter ook verschijnselen waarin er een gelaagdheid optreedt zodat er in verticale<br/>richting minder makkelijk diffusie kan plaatsvinden. Dit leidt tot een vergelijking<br/>met...
bachelor thesis 2017
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Alshuhail, A.A. (author)
One of the most crucial estimates obtained from reflection seismology is the seismic image. It provides a map of the subsurface reflectivities. However, in order to construct an accurate map an accurate propagation velocity model is needed. For simple geologic environments an isotropic velocity model is sufficient, however, for complex geologic...
doctoral thesis 2017
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Velichko, E. (author), Buyanov, A.L. (author), Saprykina, N.N. (author), Chetverikov, Yu.O. (author), Duif, C.P. (author), Bouwman, W.G. (author), Smyslov, R.Yu. (author)
Submicron- and micron-scale structures of composite hydrogels based on bacterial cellulose (BC) and polyacrylamide (PAAm) were studied by spin-echo small-angle neutron scattering (SESANS) and cryo-scanning electron microscopy (cryo-SEM). These hydrogels possessing the structure of interpenetrating polymer network were synthesized via free...
journal article 2017
Searched for: subject:"anisotropy"
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