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Bertolo, V. (author), Jiang, Q. (author), Terol Sanchez, M. (author), Riemslag, T. (author), Walters, C.L. (author), Sietsma, J. (author), Popovich, V. (author)High strength steels are widely used for structural applications, where a combination of excellent strength and ductile-to-brittle transition (DBT) properties are required. However, such a combination of high strength and toughness can be deteriorated in the heat affected zone (HAZ) after welding. This work aims to develop a relationship between...article 2023
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Obers, S.F.P.M. (author), Overal, J.J. (author), Wong, W.J. (author), Walters, C.L. (author)Application of high-strength steels in the maritime and offshore industry is currently limited by rules governing the ratio of the yield to tensile strength (the Y/T ratio). To better understand the physical basis for these rules, the nature and extent of the plastic stress/strain field in the vicinity of a stress concentration (a circular hole)...article 2022
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Wong, W.J. (author), Walters, C.L. (author)High-strength steel beams are known to have less plastic rotation capacity than beams with lower yield strengths. This has been related to the decreased strain-hardening ability of high-strength steels, and various rules and standards for steel structures stipulate maximum limits on the allowable yield-to-tensile strength ( y/ u)ratio, which...conference paper 2022
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Tabakovic, A. (author), Faloon, C. (author), O'Prey, D. (author)Conductive alginate capsules encapsulating a bitumen rejuvenator (HealRoad capsules) has demonstrated good healing abilities in pure bitumen and mortar mixes. HealRoad capsules can efficiently heal damage via induction heating. They also release the encapsulated rejuvenator, thereby rejuvenating aged bitumen. These findings indicate that...article 2022
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Barciela-Rial, M. (author), Vardon, P.J. (author), van Kessel, T. (author), Griffioen, J. (author), Winterwerp, J.C. (author)Progressively, more dredged sediments are being reused for engineering projects. For example, the Marker Wadden is a new wetland constructed in lake Markermeer, the Netherlands, with dredged cohesive sediments originating from the bed of the lake. Such dredged sediments are often dominated by cohesive sediment particles with varying amounts of...article 2022
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Rafiq, R. (author), Aleva, F.E. (author), Schrumpf, J.A. (author), Daniels, J.M. (author), Bet, P.M. (author), Boersma, W.G. (author), Bresser, P. (author), Spanbroek, M. (author), Lips, P. (author), van den Broek, T.J. (author), Keijser, B.J.F. (author), van der Ven, J.A.M. (author), Hiemstra, P.S. (author), den Heijer, M. (author), de Jongh, R.T. (author), PRECOVID-study group, (author)Background. Vitamin D deficiency is frequently found in patients with chronic obstructive pulmonary disease (COPD). Vitamin D has antimicrobial, anti-inflammatory, and immunomodulatory effects. Therefore, supplementation may prevent COPD exacerbations, particularly in deficient patients. Objectives. We aimed to assess the effect of vitamin D...article 2022
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van der Eerden, F. (author), van den Berg, F. (author), van Heijningen, A. (author)Noise contours around military training areas are calculated by using: a) the measured source strength for the impulsive sources and b) the calculated sound propagation using a representative set of meteorological situations. For high-energy impulsive sounds the source strength is measured at distances beyond 100 meters, where peak levels are...conference paper 2022
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- Lubelli, B. (author), Nijland, T.G. (author), van Hees, R.P.J. (author) article 2021
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Jiang, Q. (author), Bertolo, V.M. (author), Popovich, V.A. (author), Sietsma, J. (author), Walters, C.L. (author)Macroscale cleavage fracture toughness of high strength steels is strongly related to the fracture of hard microstructural inclusions. Therefore, an accu rate determination of the local stress on these inclu sions based on the matrix stress is necessary for the statistical modelling of macroscale cleavage fracture. This paper presents analytical...article 2021
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Bertolo, V.M. (author), Jiang, Q. (author), Walters, C.L. (author), Pupovich, V.A. (author)One of the main challenges in applying thick-section high-strength steels (HSS) at arctic condition in offshore and maritime industry is to maintain a sufficient level of toughness to prevent brittle failure. An aspect that requires special attention is the through-thickness microstructural variation which may result in different local...conference paper 2020
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Roscoe, K. (author), Hanea, A. (author), Jongejan, R. (author), Vrouwenvelder, T. (author)In levee system reliability, the length effect is the term given to the phenomenon that the longer the levee, the higher the probability that it will have a weak spot and fail. Quantitatively, it is the ratio of the segment failure probability to the cross-sectional failure probability. The literature is lacking in methods to calculate the...article 2020
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Koopman, A.S. (author), Naf, M. (author), Baltrusch, S.J. (author), Kingma, I. (author), Rodriguez-Guerrero, C. (author), Babic, J. (author), de Looze, M.P. (author), van Dieën, J.H. (author)The number one cause of disability in the world is low-back pain, with mechanical loading as one of the major risk factors. To reduce mechanical loading, exoskeletons have been introduced in the workplace. Substantial reductions in back muscle activity were found when using the exoskeleton during static bending and manual materials handling....article 2020
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Vugteveen, J. (author), de Bildt, A. (author), Serra, M. (author), de Wolff, M.S. (author), Timmerman, M.E. (author)This study assessed the factor structures of the Strengths and Difficulties Questionnaire (SDQ) adolescent and parent versions and their measurement invariance across settings in clinical (n = 4,053) and community (n = 962) samples of Dutch adolescents aged 12 to 17 years. Per SDQ version, confirmatory factor analyses were performed to assess...article 2020
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Fekkes, M. (author), Klein Velderman, M. (author), Detmar, S. (author)A resilient child can find his or her way better in society, and in adult life. Resilience has great advantages both for the child, who can get his or her life on track better, and for society. Resilient children suffer fewer harmful effects of the setbacks that they encounter, such as physical and mental problems, fears, negative self-image or...other 2020
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Walters, C.L. (author), Coppejans, O.J. (author), Hoogeland, M.G. (author)In a prior project, TNO has presented a low-cost way of finding frac-ture toughness of base materials for cleavage fracture. That method features a small-scale CTOD specimen, combined with simplified sensors, less fatigue pre-cracking, faster testing, and no need for a temperature chamber. This meth-od has been extended to welds by considering...conference paper 2019
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Ozbek, A.S. (author), Pedersen, R.R. (author), Weerheijm, J. (author), van Breugel, K. (author)This study presents the numerical analyses conducted to investigate the impact behavior of different porous concretes, which have also been cast and tested experimentally. For a realistic representation of the real porous concretes containing arbitrary shaped air pores, a mesh generation code was developed in which the aggregates in the mixtures...article 2019
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Hansen, S.G. (author), Meinen, N.E. (author), Jørgensen, H.B. (author)Assessment of the load‐carrying capacity of existing concrete structures is often based on the concrete compressive strength obtained from drilled cores. These cores are typically drilled perpendicular to the concrete surface, under the assumption that the mechanical properties of the concrete are isotropic. Recent studies however showed that...conference paper 2019
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Theunissen, M.H.C. (author), de Wolff, M.S. (author), Reijneveld, S.A. (author)Objective: Validated questionnaires help community pediatric services to identify emotional and behavioral problems (EBPs). This study assesses the psychometric properties of the self-report version of the Strengths and Difficulties Questionnaire (SDQ) for the identification of EBPs in adolescents (13 to 14 years old) and the added value of the...article 2019
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Bahceli, G. (author), Atli-Veltin, B. (author), Wilbers, D. (author), Cebeci, H. (author)Energy transition towards cleaner fuels and renewable energy brings the attention to liquefied natural gas (LNG) and liquid hydrogen (LH2) applications. Cryogenic storage temperatures make the suitable material selection for the construction of such applications difficult. Ultra-high molecular weight polyethylene (UHMWPE) thermoplastics are...conference paper 2019
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van Es, S. (author), Slot, H. (author), Steenbergen, H. (author), Maljaars, J. (author), Pijpers, R. (author)In Memoriam of Prof. Dr. Bernt Johansson. The use of high-strength steels (HSS, 460 < fy ≤ 700 MPa) and particularly very high-strength steels (VHSS, fy > 700 MPa) is limited in steel structures in civil and offshore engineering. This is due to a lack of experience in structures made of these materials and a lack of understanding of the...article 2018