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Dikken, R.J. (author)Sustainability has become an integral part of todays society. A thorough understanding of friction as a major cause of energy dissipation is therefore highly relevant. Friction of rough surfaces in contact is a physical phenomenon that involves multiple length- and time-scales, complicating a full understanding of friction. The fundamental study...doctoral thesis 2017
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Malagu, M. (author)The development of carbon nanotube(CNT)-polymer composites advocates for a better understanding of their physical and mechanical properties that depend on the diameter of the embedded CNTs. Given that the experimental assessment of size effects is extremely difficult, the use of numerical models can be enormously helpful. However, since size...doctoral thesis 2017
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Irani, N. (author), Remmers, Joris J.C. (author), Deshpande, Vikram S. (author)Plastic size effects in single crystals are investigated by using finite strain and small strain discrete dislocation plasticity to analyse the response of cantilever beam specimens. Crystals with both one and two active slip systems are analysed, as well as specimens with different beam aspect ratios. Over the range of specimen sizes...journal article 2017
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Ng Wei Siang, K. (author), Nicola, L. (author)Discrete dislocation plasticity simulations are carried out to investigate the static frictional response of sinusoidal asperities with (sub)-microscale wavelength. The surfaces are first flattened and then sheared by a perfectly adhesive platen. Both bodies are explicitly modelled, and the external loading is applied on the top surface of...journal article 2017
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Shafqat, Salman (author), Hoefnagels, Johan P.M. (author), Savov, A.M. (author), Joshi, S. (author), Dekker, R. (author), Geers, Marc G.D. (author)The exciting field of stretchable electronics (SE) promises numerous novel applications, particularly in-body and medical diagnostics devices. However, future advanced SE miniature devices will require high-density, extremely stretchable interconnects with micron-scale footprints, which calls for proven standardized (complementary metal-oxide...journal article 2017
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- Ng Wei Siang, K. (author) doctoral thesis 2016
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Sun, F. (author)The ultimate objective of this work is to gain a better understanding of the plastic behavior of rough metal surfaces under contact loading. Attention in this thesis focuses on the study of single and multiple asperities with micrometer scale dimensions, a scale at which plasticity is known to be size dependent. The asperities have very simple...doctoral thesis 2016
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Malagu, M. (author), Lyulin, Alexey (author), Benvenuti, Elena (author), Simone, A. (author)Molecular-dynamics simulations of single-walled carbon nanotubes (CNTs) embedded in a coarse-grained amorphous monodisperse polyethylene-like model system have been carried out. The roles of nanotube diameter and chirality on the physical and structural properties of the composite are thoroughly discussed for several CNTs with different...journal article 2016
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Tai, R.K. (author)“[Strain-hardening cementitious composites (SHCC)] are a new class of [fiber reinforced cementitious] composites characterized by a strain-hardening behavior in tension after first cracking accompanied by multiple cracking up to relatively high strain levels.” In order to contribute to the transition of common relatively thin SHCC elements for...master thesis 2015
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- Lahuerta Calahorra, F. (author), Westphal, T. (author), Nijssen, R.P.L. (author), Van der Meer, F.P. (author), Sluys, L.J. (author) conference paper 2014
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Qian, Z. (author), Deng, X. (author), Li, Z. (author), Dollevoet, R.P.B.J. (author)The rolling contact of elastic bodies (upper body and lower body) can be analyzed with the Hertz theory and the Kalker’s model. It is generally believed that the width of the contact area should be much smaller than the characteristic size of each elastic body, to ensure that the half-space assumption is valid. However the definition of “much...conference paper 2014
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Lahuerta, F. (author), Westphal, T. (author), Nijssen, RPL (author), van der Meer, F.P. (author), Sluys, Lambertus J. (author)The aim of this work is to study the thickness effect in static and fatigue tests of glass-fibre unidirectional compression coupons. For this purpose, the self-heating effect, the effect of specimen geometry, and the influence of the manufacturing processes have been minimized. A scaled thickness compression coupon has been designed with the...conference paper 2014
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- Liu, X.G. (author), Or, S.W. (author), Li, B. (author), Ou, Z.Q. (author), Zhang, L. (author), Zhamg, Q. (author), Geng, D.Y. (author), Yang, F. (author), Li, D. (author), Brück, E.H. (author), Zhang, Z.D. (author) journal article 2010
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Xiao, J. (author), Bauer, G.E.W. (author), Brataas, A. (author)We study the bias-dependent spin-transfer torque in magnetic tunnel junctions in the Stoner model by scattering theory. We show that the in-plane (Slonczewski type) torque vanishes and subsequently reverses its direction when the bias voltage becomes larger or the barrier wider than material and device-dependent critical values. We are able to...journal article 2008
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Iacono, C. (author)In the last years, many computational models have been developed for tensile fracture in concrete. However, their reliability is related to the correct estimate of the model parameters, not all directly measurable during laboratory tests. Hence, the development of inverse procedures is needed, that provides the parameters estimate minimizing,...doctoral thesis 2007
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Gutiérrez, M.A. (author)The direct differentiation method is applied to the estimation of statistical size effect behaviour in quasi-brittle solids. The scale factor is included in the finite element model and the autocorrelation function. Particular attention is paid to the proper differentiation of the Nataf transformation, which has been chosen to convert the basic...journal article 2006
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Elkadi, A.S.K. (author)The influence of specimen size on measured material properties in solid heterogeneous materials, such as concrete and rock, has been an issue of research and discussions for a few decades. A thorough understanding of the size effect phenomenon and the physical processes involved is imperative. An appreciable amount of experimental data on size...doctoral thesis 2005
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Van Vliet, M.R.A. (author), Van Mier, J.G.M. (author)A series of uniaxial tension experiments has been conducted to investigate the size effect on strength and fracture energy of concrete and sandstone. The experiments were carried on specimens of six different sizes in a scale range of 1:32. Depending on the material and the curing conditions a stronger or weaker size effect on the nominal...journal article 2000
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- Venema, L.C. (author), Wildoer, J.W.G. (author), Tuinstra, H.L.J.T. (author), Dekker, C. (author), Rinzler, A.G. (author), Smalley, R.E. (author) journal article 1997
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- De Borst, R. (author) journal article 1997