- document
-
Kongshaug, Simen Sørgaard (author), Hendriks, M.A.N. (author), Kanstad, Terje (author), Markeset, Gro (author)Alkali–silica reaction (ASR) in concrete causes expansion and degradation of the material, which might give adverse structural consequences. From the structural engineer point view, the greatest concern is if ASR leads to loss of structural integrity. Two natural questions arise when assessing existing concrete structures affected by ASR: (1)...journal article 2022
- document
-
de Putter, Arjen (author), Hendriks, M.A.N. (author), Rots, J.G. (author), Yang, Y. (author), Engen, Morten (author), van den Bos, Ab A. (author)Nineteen 2D nonlinear finite element analysis (NLFEA) solution strategies were benchmarked against a wide variety of 101 experiments on reinforced concrete beams failing in bending, flexural shear, or shear compression. The relatively high number of solution strategies was motivated by the conviction that choices for the constitutive models,...journal article 2022
- document
-
Zhang, F. (author), Yang, Y. (author), Naaktgeboren, N.M. (author), Hendriks, M.A.N. (author)This paper proposes a new damage identification method, namely, the probability density field of acoustic emission (AE) events. This new method provides a different perspective to deal with the uncertainties in the source localization process. We treat the source location as a random variable, and estimate its probability density field based...journal article 2022
- document
-
Geldof, Freija (author), Dashtbozorg, Behdad (author), Hendriks, B.H.W. (author), Sterenborg, Henricus J.C.M. (author), Ruers, Theo J.M. (author)During oncological surgery, it can be challenging to identify the tumor and establish adequate resection margins. This study proposes a new two-layer approach in which diffuse reflectance spectroscopy (DRS) is used to predict the top layer thickness and classify the layers in two-layered phantom and animal tissue. Using wavelet-based and peak...journal article 2022
- document
-
Lai, Marco (author), van der Stel, Stefan D. (author), Groen, Harald C. (author), van Gastel, Mark (author), Kuhlmann, Koert F.D. (author), Ruers, Theo J.M. (author), Hendriks, B.H.W. (author)Surgical excision is the golden standard for treatment of intestinal tumors. In this surgical procedure, inadequate perfusion of the anastomosis can lead to postoperative complications, such as anastomotic leakages. Imaging photoplethysmography (iPPG) can potentially provide objective and real-time feedback of the perfusion status of tissues....journal article 2022
- document
-
Hendriks, H.C.M. (author), van Prooijen, Bram (author), Cheng, C. H. (author), Aarninkhof, S.G.J. (author), Winterwerp, J.C. (author), Soetaert, K. E. (author)The amount of suspended fines in the southern North Sea strongly depends on their exchange with the sandy seabed. This exchange is governed by resuspension of fines during storms, followed by burial in the week thereafter. Despite its importance for fine sediment dynamics, the burial of fines into a sandy seabed is currently not well...journal article 2022
- document
-
Arano Barenys, Assis (author), Colombo, Matteo (author), Martinelli, Paolo (author), Øverli, Jan Arve (author), Hendriks, M.A.N. (author), Kanstad, Terje (author), di Prisco, Marco (author)This study investigated the effect of fire on the ultimate load-bearing capacity of reinforced concrete (RC) slabs. The structural response of RC circular specimens subjected to static load conditions after exposure to a hydrocarbon fire on one side of the specimen was examined. Two fire exposure times were considered (60 and 120 min) in...journal article 2022
- document
-
Hendriks, Leo (author)This essay shows a two dimensional implementation of the finite element method for the Westervelt equation. To do this the finite element method is first applied to the linear wave equation, then to non-linear diffusion and finally to the Westervelt equation. Both an element by element and a faster vectorized implementation are given for the...bachelor thesis 2021
- document
-
Hendriks, Onno (author)A new generation of intelligent Traffic Light Controllers uses Model Predictive Control to minimise delay at signalised intersections. The conventional cycle of set sequences of green phases is dropped for optimisation purposes. This research uses the ethical theories utilitarianism, egalitarianism, sufficientarianism & deontology to define...master thesis 2021
- document
-
Hendriks, Rik (author)This research project aims to implement an elasto-plastic Neo-Hookean Alpha material with a Desai flow surface with hardening and softening in Abaqus via the Continuum Mechanics framework. This is done by first defining the elasto-plastic potato diagram and deriving the corresponding stress tensor definition and dissipation inequality. The...student report 2021
- document
-
Siriaraya, P. (author), Visch, V.T. (author), Boffo, Marilisa (author), Spijkerman, Renske (author), Wiers, Reinout (author), Hendriks, Vincent (author), van Dooren, M.M.M. (author), Bas, Michael (author), Goossens, R.H.M. (author)While there has been increasing interest in the use of gamification in mental health care, there is a lack of design knowledge on how elements from games could be integrated into existing therapeutic treatment activities in a manner that is balanced and effective. To help address this issue, we propose a design process framework to support...journal article 2021
- document
-
Guo, H. (author), Oosterkamp, M.J. (author), Tonin, F. (author), Hendriks, Alexander (author), Nair, Revathy (author), van Lier, J.B. (author), de Kreuk, M.K. (author)Hydrolysis is considered to be the rate-limiting step in anaerobic digestion of waste activated sludge (WAS). In this study, an innovative 4 stages cascade anaerobic digestion system was researched to (1) comprehensively clarify whether cascading configuration enhances WAS hydrolysis, and to (2) better understand the governing hydrolysis...journal article 2021
- document
-
Albaba, Adnan (author), Simões-Capela, Neide (author), Wang, Yuyang (author), Hendriks, R.C. (author), De Raedt, Walter (author), Van Hoof, Chris (author)Background and objective: Long-term electrocardiogram monitoring comes at the expense of signal quality. During unconstrained movements, the electrocardiogram is often corrupted by motion artefacts, which can lead to inaccurate physiological information. In this situation, automated quality assessment methods are useful to increase the...journal article 2021
- document
-
Losch, M.S. (author), Swamy, A. (author), Elmi-Terander, Adrian (author), Edström, Erik (author), Hendriks, B.H.W. (author), Dankelman, J. (author)Background: The increased popularity of minimally invasive spinal surgery calls for a revision of guidance techniques to prevent injuries of nearby neural and vascular structures. Lipid content has previously been proposed as a distinguishing criterion for different bone tissues to provide guidance along the interface of cancellous and...journal article 2021
- document
-
Kongshaug, Simen Sørgaard (author), Larssen, Rolf Magne (author), Hendriks, M.A.N. (author), Kanstad, Terje (author), Markeset, Gro (author)Material modelling, from the micro to the macro level, of concrete affected by alkali–silica reaction (ASR) has been devoted a lot of research. However, the application of the material models in structural analyses of reinforced concrete (RC) structures, showing the structural implications/consequences of ASR, has got little attention in the...journal article 2021
- document
-
Engen, Morten (author), Hendriks, M.A.N. (author), Monti, Giorgio (author), Allaix, Diego L. (author)When non-linear finite element analyses are used in design of new or assessment of existing concrete structures, one should account for the modelling uncertainty before conclusions are drawn based on the results. The present article describes the basis for how this topic is treated in the draft of fib Model Code 2020. There are two components...journal article 2021
- document
-
Abdi, Bahareh (author), van Schie, Mathijs S. (author), de Groot, N.M.S. (author), Hendriks, R.C. (author)Background: Atrial electrograms recorded from the epicardium provide an important tool for studying the initiation, perpetuation, and treatment of AF. However, the properties of these electrograms depend largely on the properties of the electrode arrays that are used for recording these signals. Method: In this study, we use the electrode's...journal article 2021
- document
-
Optical tissue measurements of invasive carcinoma and ductal carcinoma in situ for surgical guidancede Boer, Lisanne L. (author), Kho, Esther (author), Van de Vijver, Koen K. (author), Vranken Peeters, Marie Jeanne T.F.D. (author), van Duijnhoven, Frederieke (author), Hendriks, B.H.W. (author), Sterenborg, Henricus J.C.M. (author), Ruers, Theo J.M. (author)Background: Although the incidence of positive resection margins in breast-conserving surgery has decreased, both incomplete resection and unnecessary large resections still occur. This is especially the case in the surgical treatment of ductal carcinoma in situ (DCIS). Diffuse reflectance spectroscopy (DRS), an optical technology based on...journal article 2021
- document
-
Çalış, M. (author), Heusdens, R. (author), Hendriks, R.C. (author), van de Par, Steven (author)The processing of low-frequency interaural time differences is found to be problematic among hearing-impaired people. The current generation of beamformers does not consider this deficiency. In an attempt to tackle this issue, we propose to replace the inaudible interaural time differences in the low-frequency region with the interaural level...journal article 2021
- document
-
Zhang, F. (author), Yang, Y. (author), Hendriks, M.A.N. (author)Acoustic Emission (AE)-based crack tracking is a promising approach to locate cracks in concrete structures. Different from conventional AE, this approach uses AE activities during crack closure. But, AE activities during crack closure may be influenced by the number of load cycles and loading speed. This may challenge the applicability of AE...conference paper 2021