- document
-
Van der Male, P. (author), Lourens, E. (author)The design for fatigue for offshore wind turbine structures is characterized by uncertainty, resulting from both loading specifications and numerical modelling. At the same time, fatigue is a main design driver for this type of structures. This study presents a strategy to monitor the accumulated fatigue damage in real-time, employing a joint...conference paper 2015
- document
-
Savija, B. (author)Chloride induced corrosion of reinforcing steel is recognized as the most common deterioration mechanism affecting reinforced concrete structures. As such, it has been in focus of research for more than thirty years. Numerous studies of chloride ingress, corrosion initiation, and corrosion propagation have been conducted. Most studies of...doctoral thesis 2014
- document
-
Lukovic, M. (author), Savija, B. (author), Schlangen, E. (author), Ye, G. (author), van Breugel, K. (author)Differential shrinkage between repair material and concrete substrate is considered to be the main cause of premature failure of repair systems (Martinola, Sadouki et al. 2001, Beushausen and Alexander 2007). Magnitude of induced stresses depends on many factors, for example the amount of restraint, moisture gradients caused by different curing...conference paper 2014
- document
-
Penkin, D. (author), Janssen, G.J.M. (author), Yarovoy, A. (author)To effectively localise a source node in a dense wireless tiny-sensor network with an arbitrary 2D/3D node distribution, a novel approach suitable to describe the hop progress of source-to-sink path in such a system is proposed. In this approach, the network topology is described as a regular lattice and relates the statistical parameters of the...journal article 2014
- document
-
Von Heymann, F.J. (author)Integer optimization is a powerful modeling tool both for problems of practical and more abstract origin. Since the 1970s we have seen huge progress in the size of problem instances that can be tackled. This progress is mostly due to the many results in polyhedral combinatorics and to algorithms and implementations related to the polyhedral...doctoral thesis 2013
- document
- Zhang, Q. (author) doctoral thesis 2013
- document
-
Patel, R.A. (author), Perko, J. (author), Jaques, D. (author), De Schutter, G. (author), Ye, G. (author), Van Breugel, K. (author)A Lattice Boltzmann (LB) based reactive transport model intended to capture reactions and solid phase changes occurring at the pore scale is presented. The proposed approach uses LB method to compute multi component mass transport. The LB multi-component transport model is then coupled with the well-established geochemical reaction code PHREEQC...conference paper 2013
- document
-
Zhang, M. (author)Cement-based materials are the most widely used man-made materials in the world. The durability of cement-based materials has been a major concern due to the premature failure and serviceability issues of many reinforced concrete structures. Durability of cement-based materials is to a large content dependent on their resistance to the ingress...doctoral thesis 2013
- document
- Savija, B. (author), Pacheco Farias, J. (author), Schlangen, H.E.J.G. (author) conference paper 2013
- document
-
Montero-Chacón, F. (author), Schlangen, H.E.J.G. (author), Medina, F. (author)The use of fiber-reinforced high-performance concrete (FRHPC) is becoming more extended; therefore it is necessary to develop tools to simulate and better understand its behavior. In this work, a discrete model for the analysis of fracture mechanics in FRHPC is presented. The plain concrete matrix, made of mortar and coarse aggregates, is...conference paper 2013
- document
-
Xuan, D. (author), Schlangen, H.E.J.G. (author), Molenaar, A.A.A. (author), Houben, L.J.M. (author)Fracture properties of cement treated demolition waste were investigated using a lattice model. In practice the investigated material is applied as a cement treated road base/subbase course. The granular aggregates used in this material were crushed recycled concrete and masonry. This results in six different types of phases in the mixture:...conference paper 2013
- document
-
Qian, Z. (author), Schlangen, H.E.J.G. (author)The fracture processes in concrete can be simulated by lattice fracture model [1]. A lattice network is usually constructed on top of the material structure of concrete, and then the mechanical properties of lattice elements are assigned, corresponding with the phases they represent. The material structure of concrete can be obtained...conference paper 2013
- document
-
Qian, Z. (author), Schlangen, E. (author), Ye, G. (author), Van Breugel, K. (author)Cracking in cement-based materials is usually not easy to predict, because of the complexity of their microstructures. Concrete is a composite material of mortar and coarse aggregates, and mortar consists of cement paste and sands. The fracture processes in these materials are related, and this paper aims to reveal the relationship by developing...conference paper 2012
- document
-
Qian, Z. (author)Concrete is a composite construction material, which is composed primarily of coarse aggregates, sands and cement paste. The fracture processes in concrete are complicated, because of the multiscale and multiphase nature of the material. In the past decades, comprehensive effort has been put to study the cracks evolution in concrete, both...doctoral thesis 2012
- document
- De Jong, A.T. (author) doctoral thesis 2012
- document
-
Huang, X. (author), Oosterlee, C.W. (author)We derive two types of saddlepoint approximations for expectations in the form of E[(X - K)+], where X is the sum of n independent random variables and K is a known constant. We establish error convergence rates for both types of approximations in the independently and identically distributed case. The approximations are further extended to...journal article 2011
- document
-
Gong, W. (author)Optimal design of support structure including foundation and turbine tower is among the most critical challenges for offshore wind turbine. With development of offshore wind industry heading for deeper ocean areas, new support structural concept such as a full lattice tower could be proven to be more advantageous than others when consideration...master thesis 2011
- document
-
Moerland, E. (author)The design of complex aircraft elements such as high-lift devices has large influence on the performance of modern transport airplanes. At the cost of increased wing weight, these devices are included in the wing to ensure safe takeoff and landing. In order to meet sustainability challenges on future air transportation systems, high-lift devices...master thesis 2011
- document
-
Tabak, F. (author)In an United States presidential election each state has a certain amount of electors. The candidate who obtains the most popular votes in a state will win all the electors for that state. The winner is the candidate that obtained the most electors. In the presidential elections of 2000 George W. Bush defeated Al Gore with 271 electoral votes...bachelor thesis 2010
- document
-
Sikiric, M.D. (author), Schürmann, A. (author), Vallentin, F. (author)The contact polytope of a lattice is the convex hull of its shortest vectors. In this paper we classify the facets of the contact polytope of the Leech lattice up to symmetry. There are 1, 197, 362, 269, 604, 214, 277, 200 many facets in 232 orbits.journal article 2010