Searched for: subject:"Grain%5C+size"
(1 - 20 of 32)

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van der Vegt, H. (author), Storms, J.E.A. (author), Walstra, Dirk Jan R. (author), Nordahl, Kjetil (author), Howes, Nick C. (author), Martinius, A.W. (author)
Modern and ancient analogues are often consulted by geologists to help understand subsurface systems. While modern analogues provide information on the areal relationship between facies, ancient systems provide detailed data on the vertical facies variations, typically along a two-dimensional outcrop. Combining data from modern and ancient...
journal article 2020
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Celada-Casero, Carola (author), Kwakernaak, C. (author), Sietsma, J. (author), Santofimia, Maria Jesus (author)
The influence of the prior austenite grain size (PAGS), varying between 6 and 185 μm, on the microstructural development of a low carbon steel during quenching and partitioning (Q&P) processing is investigated. The effect on the size and morphological aspects of the microconstituents is discussed based on the kinetics of carbon...
journal article 2019
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Kumar, A. (author), Saxena, A. K. (author), Kirchlechner, C. (author), Herbig, M. (author), Brinkmann, S. (author), Petrov, R.H. (author), Sietsma, J. (author)
Failure in engineering materials like steels is strongly affected by in-service deleterious alterations in their microstructure. White Etching Layers (WELs) are an example of such in-service alterations in the pearlitic microstructure at the rail surface. Cracks initiate in the rails due to delamination and fracture of these layers and...
journal article 2019
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Celada-Casero, Carola (author), Sietsma, J. (author), Santofimia, Maria Jesus (author)
There is sufficient experimental evidence to propose that the formation kinetics of athermal martensite directly depends on the austenite grain structure from which the martensite forms. Yet, this dependence is frequently ignored. The present study investigates the role of the prior austenite grain size (PAGS) in the martensitic...
journal article 2019
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Deng, Zhirui (author), He, Qing (author), Safar, Z. (author), Chassagne, C. (author)
The precise interactions between organic and inorganic particles in the context of flocculation is an on-going topic of research. The suspended particulate matter (SPM) found in estuaries is composed of both organic and inorganic particles with specific particle size distributions (PSD's). These PSD's are a function of the hydrodynamic...
journal article 2019
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Vittorietti, M. (author), Kok, Piet J.J. (author), Sietsma, J. (author), Jongbloed, G. (author)
Understanding the intricate and complex materials microstructure and how it is related to materials properties is an important problem in the Materials Science field. For a full comprehension of this relation, it is fundamental to be able to describe the main characteristics of the 3-dimensional microstructure. The most basic model used for...
journal article 2019
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Fang, H. (author), van der Zwaag, S. (author), van Dijk, N.H. (author)
The magnetic configuration of a ferromagnetic system with mono-disperse and poly-disperse distribution of magnetic particles with inter-particle interactions has been computed. The analysis is general in nature and applies to all systems containing magnetically interacting particles in a non-magnetic matrix, but has been applied to steel...
journal article 2018
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Snellen, M. (author), Gaida, T.C. (author), Koop, L. (author), Alevizos, Evangelos (author), Simons, D.G. (author)
Obtaining an overview of the spatial and temporal distribution of seabed sediments is of high interest for multiple research disciplines. Multibeam echosounders allow for the mapping of seabed sediments with high area coverage. In this paper, the repeatability of acoustic classification derived from multibeam echosounder backscatter is addressed...
journal article 2018
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Huisman, B.J.A. (author), Ruessink, B. G. (author), de Schipper, M.A. (author), Luijendijk, A.P. (author), Stive, M.J.F. (author)
Large perturbations in the coastline, such as the 'Sand Motor' nourishment (∼21 million m<sup>3</sup>) at the Holland coast, can initiate considerable spatial and temporal changes in the median grain size (D<sub>50</sub>) of the sea bed on the lower shoreface. The relevance of hydrodynamic conditions for the development of the heterogeneity...
journal article 2018
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Gallagher, Edith (author), Wadman, Heidi (author), McNinch, Jesse (author), Reniers, A.J.H.M. (author), Koktas, Melike (author)
Grain size on the surface of natural beaches has been observed to vary spatially and temporally with morphology and wave energy. The stratigraphy of the beach at Duck, North Carolina, USA was examined using 36 vibracores (~1-1.5 m long) collected along a cross-shore beach profile. Cores show that beach sediments are finer (~0.3 mm) and more...
journal article 2016
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De Visser, M.M. (author), Kanning, W. (author), Koopmans, R. (author), Niemeijer, J. (author)
Research to the failure mechanism piping (internal, backward erosion) in the Netherlands shows that the dikes require costly berms to meet the required safety standards. According to the Sellmeijer piping-formula, the d70 (70%-quantile of the grain size distribution by weight) is an important parameter in the resistance against piping. Therefore...
conference paper 2015
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Van der Zwaag, J. (author)
The sediment composition of the sea bed is of relevance for various coastal properties such as bed forms, beach slopes and marine ecology. Furthermore it may significantly influence the morphological evolution of the coast. The sediment sorting processes at natural beaches are, however, difficult to distinguish since there can be a both a large...
report 2014
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Ohms, C. (author)
Welding is applied in many industrial sectors to join components, and has become an important manufacturing process because it enables the fabrication of structures that could not otherwise be constructed. Weld regions have inhomogeneous microstructures and are more susceptible to crack initiation and crack propagation than the surrounding base...
doctoral thesis 2013
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Duan, X. (author), Jia, D. (author), Yang, Z. (author), Zhou, Y. (author), Ouyang, J. (author), Sloof, W.G. (author), Van der Zwaag, S. (author)
Abstract only.
conference paper 2013
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Reniers, A.J.H.M. (author), Gallagher, E.L. (author), MacMahan, J.H. (author), Brown, J.A. (author), Van Rooijen, A.A. (author), Van Thiel de Vries, J.S.M. (author), Van Prooijen, B.C. (author)
Novel observations of surface grain-size distributions are used in combination with intra-wave modeling to examine the processes responsible for the sorting of sediment grains on a relatively steep beach (slope?=?1:7.5). The field observations of the mean grain size collected with a digital camera system at consecutive low and high tides for a 2...
journal article 2013
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Sharma, K. (author), Ponomarev, M.V. (author), Verheijen, M.A. (author), Kunz, O. (author), Tichelaar, F.D. (author), Van de Sanden, M.C.M. (author), Creatore, M. (author)
In this paper, we report on the deposition of amorphous silicon (a-Si:H) films at ultra-high growth rate (11–60?nm/s) by means of the expanding thermal plasma technique, followed by solid-phase crystallization (SPC). Large-grain (?1.5??m) polycrystalline silicon was obtained after SPC of high growth rate (?25?nm/s) deposited a-Si:H films. The...
journal article 2012
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Shishvan, S.S. (author), Nicola, L. (author), Van der Giessen, E. (author)
Two-dimensional (2D) discrete dislocation plasticity simulations are carried out to investigate the Bauschinger effect (BE) in freestanding thin films. The BE in plastic flow of polycrystalline materials is generally understood to be caused by inhomogeneous deformation during loading, leading to residual stress upon unloading. This inhomogeneity...
journal article 2010
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Botman, A. (author), Hagen, C.W. (author), Li, J. (author), Thiel, B.L. (author), Dunn, K.A. (author), Mulders, J.J.L. (author), Randolph, S. (author), Toth, M. (author)
The material grown in a scanning electron microscope by electron beam-induced deposition (EBID) using Pt(PF3)4 precursor is shown to be electron beam sensitive. The effects of deposition time and postgrowth electron irradiation on the microstructure and resistivity of the deposits were assessed by transmission electron microscopy, selected area...
journal article 2009
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Montserrat, F. (author), Van Colen, C. (author), Degraer, S. (author), Ysebaert, T. (author), Herman, P.M.J. (author)
We assessed the influence of benthic communities on sediment properties in large defaunation experiments in replicated 16 m2 plots on a tidal flat in the Westerschelde estuary (SW Netherlands). We compared microphytobenthos and benthic macrofauna recovery and recolonisation between control and defaunated sediments during 8 mo following the...
journal article 2008
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Khalili Amiri, P. (author), Zhuang, Y. (author), Schellevis, H. (author), Rejaei, B. (author), Vroubel, M. (author), Ma, Y. (author), Burghartz, J.N. (author)
This work presents a series of high-resistivity nanogranular Co–Al–O films with maximum resistivity of ? 110?m??cm. The films were deposited using pulsed dc reactive sputtering of a Co72Al28 target in an oxygen/argon ambient. The samples were characterized by scanning electron microscopy (SEM), M-H loop measurements, and s-parameter measurements...
journal article 2007
Searched for: subject:"Grain%5C+size"
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