Searched for: department%3A%22Materials%255C+Innovation%255C+Institute%22
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Koppen, S. (author), van der Kolk, M. (author), van den Boom, S.J. (author), Langelaar, Matthijs (author)
Real-world structural optimisation problems involve multiple loading conditions and design constraints, with responses typically depending on states of discretised governing equations. Generally, one uses gradient-based nested analysis and design approaches to solve these problems. Herein, solving both physical and adjoint problems dominates...
journal article 2022
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Pinheiro, Manuel (author), Willaert, Robin (author), Khan, Afaq (author), Krairi, A. (author), Van Paepegem, Wim (author)
Temporomandibular joint (TMJ) replacement with an implant is only used when all other conservative treatments fail. Despite the promising short-term results, the long-term implications of TMJ replacement in masticatory function are not fully understood. Previous human and animal studies have shown that perturbations to the normal masticatory...
journal article 2021
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Yazdan Mehr, M. (author), van Driel, W.D. (author), Zhang, Kouchi (author)
In this paper, progresses of color maintenance, also known as color shift, in solid-state lighting (SSL) systems are thoroughly reviewed. First, color shift is introduced and a few examples are given from different real-life industrial conditions. Different degradation mechanisms in different parts of the system are also explained. Different...
review 2015
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Bahrami, A. (author), Miroux, A. (author), Sietsma, J. (author)
In the present study, an age-hardening model for Al-Mg-Si alloys was developed considering cylindrical morphology with constant aspect ratio for precipitates. It is assumed that the precipitate distribution during underaging is controlled by simultaneous nucleation and growth, and after peak age, the process becomes coarsening controlled. The...
journal article 2012
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Ande, A.K. (author), Sluiter, M.H.F. (author)
journal article 2012
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Tasan, C.C. (author), Hoefnagels, J.P.M. (author), Dekkers, E.C.A. (author), Geers, M.G.D. (author)
While the industrial interest in sheet metal with improved specific-properties led to the design of new alloys with complex microstructures, predicting their safe forming limits and understanding their microstructural deformation mechanisms remain as significant challenges largely due to the inadequacy of the existing experimental tools. The...
journal article 2012
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Van Tol, R.T. (author), Zhao, L. (author), Schut, H. (author), Sietsma, J. (author)
The effect of strain on the deformation mechanisms in an austenitic Mn-based twinning induced plasticity (TWIP) steel is investigated using magnetic measurements, XRD, positron beam Doppler spectroscopy, and finite element method simulations. The experimental observations reveal the formation of a0-martensite at specific degrees of deformation,...
journal article 2012
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Meteleva-Fischer, Y.V. (author), Yang, Y. (author), Boom, R. (author), Kraaijveld, B. (author), Kuntzel, H. (author)
Refining of metallurgical-grade silicon was studied using a process sequence of slag treatment, controlled cooling, and acid leaching. A slag of the Na2O-CaO-SiO2 system was used. The microstructure of grain boundaries in the treated silicon showed enhanced segregation of impurities, and the formation of CaSi2 and other Ca-rich phases. Boron and...
journal article 2012
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Ghodrat, S. (author), Riemslag, T.A.C. (author), Kestens, L.A.I. (author), Petrov, R.H. (author), Janssen, M. (author), Sietsma, J. (author)
In cylinder heads of compacted graphite iron (CGI), the heating and cooling cycles can lead to localized cracking due to thermomechanical fatigue (TMF). Traditionally, TMF behavior is studied by thermal cycling of smooth specimens. The resulting number of cycles to failure (Nf) constitutes a single parameter that can be used to predict actual...
journal article 2012
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Wiebenga, J.H. (author), Van den Boorgaard, A.H. (author), Klaseboer, G. (author)
The coupling of finite element simulations to mathematical optimization techniques has contributed significantly to product improvements and cost reductions in the metal forming industries. The next challenge is to bridge the gap between deterministic optimization techniques and the industrial need for robustness. This paper introduces a...
journal article 2012
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Van Soestbergen, M. (author)
An accurate mathematical description of the charge transfer rate at electrodes due to an electrochemical reaction is an indispensable component of any electrochemical model. In the current work we use the generalized Frumkin-Butler–Volmer (gFBV) equation to describe electrochemical reactions, an equation which, contrary to the classical Butler...
journal article 2012
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Van Tol, R.T. (author), Kim, J.K. (author), Zhao, L. (author), Sietsma, J. (author), De Cooman, B.C. (author)
To understand the formation of ?'-martensite in high stacking fault energy twinning-induced plasticity steel deformed in the deep drawing mode, the existing phases were investigated using magnetic and transmission electron microscopy (TEM). Small fractions of ?'-martensite were quantitatively determined by magnetization saturation experiments...
journal article 2012
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Tasan, C.C. (author), Hoefnagels, J.P.M. (author), Geers, M.G.D. (author)
Microstructural damage evolution is reported to influence significantly the failures of new high-strength alloys. Its accurate quantification is, therefore, critical for (1) microstructure optimization and (2) continuum damage models to predict failures of these materials. As existing methodologies do not fulfill the requirements, there is an...
journal article 2012
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Kamran, K. (author), Van Soestbergen, M. (author), Pel, L. (author)
The removal of salt from porous building materials under the influence of an applied voltage gradient normally results in high pH gradients due to the formation of protons and hydroxyl ions at the electrodes. The formed acidic and alkaline regions not only lead to disintegration of the porous material, but also affect the salt transport. In this...
journal article
Searched for: department%3A%22Materials%255C+Innovation%255C+Institute%22
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