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Duijster, A. (author), Volker, A. (author), van den Berg, F. (author), Celada-Casero, C. (author)The applicability of laser ultrasonics for the determination of grain size and phase composition in steels under different temperatures was investigated. This was done by obtaining the velocity and attenuation of propagating ultrasonic waves in a simulated steel medium. Samples of ferrite and austenite with varying microstructures were modelled...article 2023
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Jiang, Q. (author), Bertolo, V.M. (author), Popovich, V.A. (author), Sietsma, J. (author), Walters, C.L. (author)Thick section S690 QT steel is modelled with a modified multibarrier model that is based on the weakest-link mechanism. Segregation bands are modelled as discrete layers which have different grain size, yield properties, and local fracture parameters from outside of the bands. The results show that embrittlement from segregation bands can only...article 2022
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- Visschers, F.L.L. (author), Massaad, J. (author), van Neer, P.L.M.J. (author), Verweij, M.D. (author), Liu, D. (author), Broer, D.J. (author) article 2022
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- Lubelli, B. (author), Nijland, T.G. (author), van Hees, R.P.J. (author) article 2021
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Gomarasca, S. (author), Peeters, D.M.J. (author), Atli-Veltin, B. (author), Dransfeld, C. (author)Understanding the three-dimensional variability of unidirectional composites is relevant to the material per formance and the development of advanced material modelling strategies. This work proposes a new method ology for the characterization of unidirectional composites, showcased on carbon fibre/poly(ether-ether-ketone) tapes. Three...article 2021
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Jiang, Q. (author), Bertolo, V.M. (author), Popovich, V.A. (author), Sietsma, J. (author), Walters, C.L. (author)Macroscale cleavage fracture toughness of high strength steels is strongly related to the fracture of hard microstructural inclusions. Therefore, an accu rate determination of the local stress on these inclu sions based on the matrix stress is necessary for the statistical modelling of macroscale cleavage fracture. This paper presents analytical...article 2021
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Bertolo, V.M. (author), Jiang, Q. (author), Walters, C.L. (author), Pupovich, V.A. (author)One of the main challenges in applying thick-section high-strength steels (HSS) at arctic condition in offshore and maritime industry is to maintain a sufficient level of toughness to prevent brittle failure. An aspect that requires special attention is the through-thickness microstructural variation which may result in different local...conference paper 2020
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van den Dries, M.A. (author), Lamballais, S. (author), El Marroun, H. (author), Pronk, A. (author), Spaan, S. (author), Ferguson, K.K. (author), Longnecker, M.P. (author), Tiemeier, H. (author), Guxens, M. (author)Background: Prenatal exposure to organophosphate (OP) pesticides associate with impaired neurodevelopment in humans and animal models. However, much uncertainty exists about the brain structural alterations underlying these associations. The objective of this study was to determine whether maternal OP pesticide metabolite concentrations in urine...article 2020
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Faiyas, A.P.A. (author), Erich, S.J.F. (author), Huinink, H.P. (author), Adan, O.C.G. (author)This article presents an experimental investigation on the influence of Methylhydroxyethylcellulose (MHEC) modified mortar on water absorption into tile and base substrate using Nuclear Magnetic Resonance (NMR) imaging. Addition of MHEC shifts the absorption behavior from homogeneous to inhomogeneous as a result of increased viscosity of pore...article 2019
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van den Berg, F.D. (author), Kok, P.J.J. (author), Yang, H. (author), Aarnts, M.P. (author), Meilland, P. (author), Kebe, T. (author), Stolzenberg, M. (author), Krix, D. (author), Zhu, W. (author), Peyton, A.J. (author), Martinez-De-Guerenu, A. (author), Gutierrez, I. (author), Jorge-Badiola, D. (author), Malmström, M. (author), Volker, A.W.F. (author), Duijster, A.J. (author), Wirdelius, H. (author), Boström, A. (author), Mocci, C. (author), Vannucci, M. (author), Colla, V. (author), Davis, C. (author), Zhou, L. (author), Schmidt, R. (author), Labbé, S. (author), Reboud, C. (author), Skarlatos, A. (author), Leconte, V. (author), Lombard, P. (author)In steel manufacturing, the conventional method to determine the mechanical properties and microstructure is by offline, destructive (lab-)characterisation of sample material that is typically taken from the head or the tail of the coil. Since coils can be up to 7 km long, the samples are not always representative for the main coil body. Also,...conference paper 2018
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Peters, T.A. (author), Carvalho, P.A. (author), van Wees, J.F. (author), Overbeek, J.P. (author), Sagvolden, E. (author), van Berkel, F.P.F. (author), Løvvik, O.M. (author), Bredesen, R. (author)The long-term operation of a ceramic-supported 5 μm-thick Pd membrane at 450 °C and 27 bar with a feed representing steam-methane-reforming conditions has been monitored over a period of 100 days. Subsequently, a thorough characterisation of the exposed membrane has been performed to investigate leakage behavior and microstructural changes to...article 2018
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Fischer, H.R. (author), Mookhoek, S.D. (author)Six different bitumina of comparable PEN grade were investigated to gain a relation between the compositionarticle 2016
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Ersch, C. (author), Meinders, M/B.J. (author), Bouwman, W.G. (author), Nieuwland, M. (author), van der Linden, E. (author), Venema, P. (author), Martin, A.H. (author)The microstructure and rheological response of globular protein gels (whey protein isolate (WPI) and soy protein isolate (SPI)) in the presence of gelatin (type A, type B and hydrolyzed type A) was investigated. Microstructural information was obtained using a combination of confocal laser scanning microscopy (CLSM) and spin echo small-angle...article 2016
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Ersch, C. (author), van der Linden, E. (author), Venema, P. (author), Martin, A. (author)The gelation of gelatine in mixtures of gelatine (type A or type B) and globular proteins (Whey Protein Isolate (WPI), Whey Protein Aggregates (WPA) and Soy Protein Isolate (SPI)) was studied with a focus on their phase separation during gelation. Confocal laser scanning microscopy, visual observations and rheology were used to link the changes...article 2016
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Houben, M.E. (author), Barnhoorn, A. (author), Wasch, L. (author), Trabucho-Alexandre, J. (author), Peach, C.J. (author), Drury, M.R. (author)The Toarcian (Early Jurassic) Posidonia Shale Formation is a possible unconventional gas source in Northern Europe and occurs within the Cleveland Basin (United Kingdom), the Anglo-Paris Basin (France), the Lower Saxony Basin and the Southwest Germany Basin (Germany), and the Roer Valley Graben, the West Netherlands Basin, Broad Fourteens Basin,...article 2016
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Fischer, H.R. (author), Nabi, H.S. (author), Weiss, L. (author), Gielen, A.W.J. (author)Molding compounds are key materials to deliver well packaged reliable IC’s for demanding applications, such as automotive electronics. With shrinking sizes of IC’s and the increased requirements with respect to loading conditions, application environment and lifetime, the reliability of the packaging becomes increasingly important. The...conference paper 2015
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Vinai, R. (author), Panagiotopoulou, C. (author), Soutsos, M. (author), Taxiarchou, M. (author), Zervaki, M. (author), Valcke, S.L.A. (author), Ligero, V.C. (author), Couto, S. (author), Gupta, A. (author), Pipilikaki, P. (author), Alvarez, I.L. (author), Coelho, D. (author), Branquinho, J. (author)Worldwide, the building sector requires the production of 4 billion tonnes of cement annually, consuming more than 40% of global energy. Alkali activated “cementless” binders have recently emerged as a novel eco-friendly construction material with a promising potential to replace ordinary Portland cement. These binders consist of a class of...article 2015
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de Rooij, M.R. (author), Mendonca Filho, F.F. (author)In this article a trip is taken to characterize concrete through its hardened cement paste based on its microstructure. Optical microscopy is coupled to advanced image analysis, as well as statistical data analysis to characterize heterogeneous concrete material. The article takes a closer look at the determination of the w/c ratio through the...conference paper 2015
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Fischer, H.R. (author), Dillingh, E.C. (author), Hermse, C.G.M. (author)The objective of this work is to study the common features and the evolution of microstructures of bituminous binders regardless of their grade (PEN 10/20 to 160/220) and source/origin using the atomic force microscope operated in phase contrast mode. All bituminous binders show the same microstructural features, consisting of three distinct...article 2014
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Ocola, L.E. (author), Rue, C. (author), Maas, D.J. (author)Over the last few years, significant improvements in sources, columns, detectors, control software, and accessories have enabled a wealth of new focused ion beam applications. In addition, modeling has provided many insights into ion-sample interactions and the resultant effects on the sample. With the knowledge gained, the community has found...article 2014