- document
-
Borgart, A. (author)Shell structures can be either calculated with complex mathematics and differential geometry, or with the help of finite element method (FEM) software. Neither method gives the designer sufficient insight about the behaviour of the shell in the early design stage. The first method is for most designers too complex, it requires proficiency in at...doctoral thesis 2024
- document
-
Meyer, M. (author)The spin of a single electron or hole provides an attractive candidate for implementing a quantum bit when confined in a semiconductor quantum dot. Such a spin qubit is characterized by long coherence and short gate times. High-fidelity single and two-qubit operations have been demonstrated as well. Additionally, semiconductor quantum dots have...doctoral thesis 2024
- document
-
Liang, M. (author)Since the introduction of cementitious materials, shrinkage-induced earlyage cracking (EAC) has emerged as a significant issue that negatively influences the function, durability, and aesthetics of concrete structures like dams, tunnels, and underground garages. This thesis aims to develop new experimental and modelling techniques that help...doctoral thesis 2024
- document
-
Bufalari, G. (author), den Besten, J.H. (author), Kaminski, M.L. (author)The response of maritime structures can be multiaxial, involving predominant mode-I and non-negligible mode-III components. Adopting a stress distribution formulation based effective notch stress as fatigue strength parameter for mixed mode-{I, III} multiaxial fatigue assessment purposes, a mode-I equivalent von Mises type of failure...journal article 2024
- document
-
Manchester, Emily Louise (author), Pirola, S. (author), Pirola, Sergio (author), Mastroiacovo, Giorgio (author), Polvani, Gianluca (author), Pontone, Gianluca (author), Xu, Xiao Yun (author)Aortic valve disease is often treated with bioprosthetic valves. An alternative treatment is aortic valve neocuspidization which is a relatively new reparative procedure whereby the three aortic cusps are replaced with patient pericardium or bovine tissues. Recent research indicates that aortic blood flow is disturbed, and turbulence effects...journal article 2024
- document
-
Liang, M. (author), Xie, J. (author), He, S. (author), Chen, Y. (author), Schlangen, E. (author), Šavija, B. (author)Early-age cracking risk induced by autogenous deformation is high for cementitious materials of low water-binder ratios. The autogenous deformation, viscoelastic properties, and stress evolution are three important factors for understanding and quantifying the early-age cracking risk. This paper systematically reviewed the experimental and...review 2024
- document
-
Liu, K. (author), Sluiter, M.H.F. (author)In a material under stress, grain boundaries may give rise to stress discontinuities. The stress state at grain boundaries strongly affects microscopic processes, such as diffusion and segregation, as well as failure initiation, such as fatigue, creep, and corrosion. Here the general condition of incompatibility stress at grain boundaries is...journal article 2024
- document
-
Wu, W. (author), Veljkovic, M. (author), Kolstein, M.H. (author), Maljaars, Johan (author), Pijpers, Richard (author)Fatigue cracks in the stiffener-to-deck plate connections of orthotropic bridge decks, initiating from the weld toe or root and propagating into the stiffener or weld throat, are experimentally and numerically studied. A statistical analysis of the structural stress is carried out using the experimental data. Automatic welded specimens show a...journal article 2024
- document
-
Wu, W. (author), Veljkovic, M. (author), Kolstein, M.H. (author), Pijpers, Richard (author), Maljaars, Johan (author)Steel Orthotropic Bridge Decks (OBDs) are widely used in long-span and movable bridges. Fatigue resistance analysis plays an important role in the design or assessment of OBDs. One possible fatigue failure is the crack initiating from the weld root of stiffener-to-deck plate connections at crossbeams. A full-scale experimental investigation...journal article 2024
- document
-
Felicita, M.P. (author), Pagella, G. (author), Ravenshorst, G.J.P. (author), Mirra, M. (author), van de Kuilen, J.W.G. (author)This case study explores the utilization of distributed fiber optic sensors (DFOS) in wooden foundation piles, for assessing and monitoring the stress distribution along their length. Three spruce and three pine foundation piles instrumented with DFOS were driven into the soil in a testing field in Amsterdam and axially loaded in compression....journal article 2024
- document
-
Zheng, Kaifeng (author), Feng, Xiaoyang (author), He, Xiaohui (author), Heng, J. (author), Li, Le (author), Wang, Hongfu (author)In order to improve the fatigue resistance of orthotropic steel decks (OSDs), the steel bridge deck was annealed to reduce the welding residual stress of key welds. This work at first presented a systematical review and discussion over the distribution pattern of welding residual stress in OSDs, in accordance with a conceptual analysis...journal article 2024
- document
-
Bostan, I. (author), van Egmond, R. (author), Gommers, D.A.M.P.J. (author), Ozcan Vieira, E. (author)Intensive Care Unit (ICU) nurses are burdened by excessive number of false and irrelevant alarms generated by patient monitoring systems. Nurses rely on these patient monitoring systems for timely and relevant medical information concerning patients. However, the systems currently in place are not sensitive to the perceptual and cognitive...journal article 2024
- document
-
Xu, J. (author), Doubrovski, E.L. (author), Ozdemir, Mehmet (author), Geraedts, Jo M.P. (author), Song, Y. (author)Structural electronics has garnered significant attention in the past decade. However, there remains a lack of a systematic approach in designing and manufacturing sensors that leverage both mechanical and electronic properties of materials for different applications. In this paper, we introduce a method for designing piezoresistive force...journal article 2024
- document
-
Yao, Liaojun (author), Chuai, Mingyue (author), Lyu, Zhangming (author), Chen, Xiangming (author), Guo, Licheng (author), Alderliesten, R.C. (author)Methods based on fracture mechanics have been widely used in fatigue delamination growth (FDG) characterization of composite laminates. These methods are based on the similitude hypothesis. It is therefore important to have appropriate parameters to well represent the similitude, which is useful for fatigue delamination test standard...journal article 2024
- document
-
Zhang, Yuqi (author), Kaiser, Elias (author), Dutta, S. (author), Sharkey, Thomas D. (author), Marcelis, Leo F.M. (author), Li, Tao (author)Triose phosphate utilization (TPU) limitation is one of the three biochemical limitations of photosynthetic CO<sub>2</sub> assimilation rate in C<sub>3</sub> plants. Under TPU limitation, abrupt and large transitions in light intensity cause damped oscillations in photosynthesis. When plants are salt-stressed, photosynthesis is often down...journal article 2024
- document
-
Gonzalez Acosta, J.L. (author), Mánica, Miguel A. (author), Vardon, P.J. (author), Hicks, M.A. (author), Gens, Antonio (author)This paper investigates the implementation of a nonlocal regularisation of the material point method to mitigate mesh-dependency issues for the simulation of large deformation problems in brittle soils. The adopted constitutive description corresponds to a simple elastoplastic model with nonlinear strain softening. A number of benchmark...journal article 2024
- document
-
Golchin, A. (author)In the serviceability lifespan of thermo-active geo-structures such as energy-piles, soils surrounding these structures are exposed to a combination of mechanical and thermal loads. These loads are often complex (including cycles) and, depending on the state of the soils, the response of the surrounding soil to these loads may differ. Since the...doctoral thesis 2023
- document
-
Yan, R. (author)High-strength steel (HSS) has higher strength but lower ductility than mild steel. The cross-section of the structural members may be reduced using HSS instead of mild steel, provided the buckling of elements does not govern the failure. The reduced member size benefits the environment and economy by means of less energy consumption, less carbon...doctoral thesis 2023
- document
-
Templated Synthesis of Diamond Nanopillar Arrays Using Porous Anodic Aluminium Oxide (AAO) MembranesZhang, C. (author), Liu, Z. (author), Li, Chun (author), Buijnsters, J.G. (author)Diamond nanostructures are mostly produced from bulk diamond (single- or polycrystalline) by using time-consuming and/or costly subtractive manufacturing methods. In this study, we report the bottom-up synthesis of ordered diamond nanopillar arrays by using porous anodic aluminium oxide (AAO). Commercial ultrathin AAO membranes were adopted as...journal article 2023
- document
-
Seeber, Franziska (author), Sarnaghi, Ani Khaloian (author), Rais, Andreas (author), van de Kuilen, J.W.G. (author)Mechanical properties of wood such as stiffness and strength vary locally especially due to heterogeneities and anisotropy. Analytical models and numerical simulations of wooden boards are able to represent varying material orientation e.g. with local fiber directions from laser scanning as input for the prediction of strength. Current Finite...journal article 2023