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Guzzo Falci, Catarina (author), Ngan-Tillard, D.J.M. (author), Hofman, Corinne L. (author), van Gijn, Annelou (author)In this study, we generate novel insights regarding bodily ornaments from indigenous societies of late precolonial Greater Antilles. Previous research has highlighted the sociopolitical role of valuable, exotic, and figurative ornaments, yet there are many gaps in our current understanding of these artifacts. Here, we focus on ornaments from...review 2020
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Fleischer, J.C. (author), Diehl, J.C. (author), Wauben, L.S.G.L. (author), Dankelman, J. (author)Three-dimensional (3D) printing may be a solution to shortages of equipment and spare parts in the healthcare sector of low- and middle-income countries (LMICs). Polylactic acid (PLA) for 3D printing is widely available and biocompatible, but there is a gap in knowledge concerning its compatibility with chemical disinfectants. In this study, 3D...journal article 2020
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Eigenraam, P. (author), Borgart, A. (author), Chilton, John (author), Li, Qingpeng (author)This paper presents a detailed structural analysis of a bubble shell engineered by Heinz Isler. Through 3D scanning the geometry of this shell structure has become available to the authors. Structural analysis has not been possible before since the geometry of the shell was not available. The bubble shell was Isler’s most built type of shell. In...journal article 2020
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Mulder, J.T. (author), Kirkwood, N.R.M. (author), De Trizio, Luca (author), Li, Chen (author), Bals, Sara (author), Manna, L. (author), Houtepen, A.J. (author)Indium phosphide quantum dots (QDs) have drawn attention as alternatives to cadmium- and lead-based QDs that are currently used as phosphors in lamps and displays. The main drawbacks of InP QDs are, in general, a lower photoluminescence quantum yield (PLQY), a decreased color purity, and poor chemical stability. In this research, we attempted...journal article 2020
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Tsouvalas, A. (author), Molenkamp, T. (author), Canny, Khairina (author), Kroon, D.P. (author), Versluis, Marco (author), Peng, Y. (author), Metrikine, A. (author)The paper establishes a computationally inexpensive method to deal with the dynamic response of liquid storage tanks subjected to seismic excitation including dynamic soil-structure interaction. The tank is modelled as a thin shell, the stored liquid is described asan inviscid and incompressible fluid and the soil medium is modelled as an...conference paper 2020
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Karim, Madina (author)In the past decades, gas productions in the province of Groningen in The Netherlands have caused a significant amount of shallow human-induced earthquakes. Its building stock has shown to be highly vulnerable to these unexpected events. Among various building typologies, damage has been reported for approximately 12.9% of the churches in...master thesis 2019
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Eberlein, David (author)Guidelines dating back 50 years, NASA SP-8007, are employed today in the design of thin-walled launch vehicle structures. Due to advances in materials, structural designs, and manufacturing techniques since the publication of SP-8007, the development of new knockdown factors for contemporary launch vehicle structures is an ongoing subject of...master thesis 2019
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Westsson, E.E. (author)The increasing energy demand of the world population in combination with tangible climate change effects stemming from rising carbon dioxide emissions is currently characterizing a large portion of the political and societal debate. Despite huge technological advancement in the field of renewable energy resulting in energy prices lower than that...doctoral thesis 2019
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Vis, Simone (author)During oil drilling, the position of wells is indirectly determined by measurements near the drilling bit. However, the measurements are disturbed by noise causing errors in the measurements. It is important for large oil companies like Shell to determine the position of wells with a certain degree of uncertainty. Therefore, the main objective...bachelor thesis 2019
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Damen, Wilfried (author)Cast glass is a promising structural material that has seen increasing use in the build environment over the last year. It offers a great freedom of shape for designers and engineers, beyond the two-dimensional float glass that is still primarily used. Despite this, cast glass in practice has only been used for solid bricks, mimicking...master thesis 2019
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van der Weijst, Felix (author)Glass is a material that has a high compressive strength and a low tensile strength. While being mostly produced as flat sheets of float glass, it can also be casted into components that have a thicker geometry and thus a higher buckling resistance. These properties make cast glass components suitable for the construction of shell structures...master thesis 2019
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Khamis, Karim (author)Miniaturization of spacecraft has been gaining wide interest in the space industry, given its potential for reducing space missions' costs and providing a novel approach to enhancing and facilitating spaceflight. Recently, a lot of research has been successfully put into this field along with the advancements that make it more feasible, though a...master thesis 2019
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Broshuis, Ab (author)Present stroke rehabilitation devices for the arm are often difficult to use by the patient himself and cannot be used at home. A compliant shell mechanism could overcome the shortcomings of the current available devices. By the use of monolithic shell mechanisms a simple to use device can be designed, which can be made wearable. It would make...master thesis 2019
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Kooistra, Hylke (author)Existing scoliosis braces preclude spinal movement for activities of daily living, which reduces the willingness to wear the brace and treatment success. This work develops a scoliosis brace that meets corrective requirements while retaining patient mobility.<br/>The primary compliance vector (PCV) captures the predominant kinematic degree of...master thesis 2019
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Buskermolen, Pim (author)This thesis aims to provide a better understanding on the relationship between the mechanical and geometrical properties of shell structures. In search hereof, an attempt is made to describe the thrust surface; a geometrical representation of the in-plane force trajectories through a structure. There exists a well-known relation between the...master thesis 2019
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Xia, Y. (author), Wu, Yue (author), Hendriks, M.A.N. (author)In current optimization methods for free-form shells, the shape and topology are usually optimized separately. These methods are based on the assumption that the shape and topology of a shell influence each other only slightly, but this is not always correct. Moreover, different parameterization models are used in the shape optimization and...journal article 2019
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Markestein, Koen (author)Analysing nonlinear vibrations of any finite element model containing a considerable number of degrees of freedom requires extensive computational resources. For a time-dependent nonlinear analysis, numerous iterations and time increments are required to compute steady statesolutions....master thesis 2018
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van der Kemp, Stefhan (author)Passive exoskeletons that support the weight of the surgeon’s arms could yield a significant ergonomic improvement in the Laparoscopic theatre. However, the cost and regulations associated with sterilization complicates adoption of such devices. In this work a compact passive arm support mechanism is designed that can be worn underneath the...master thesis 2018
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3D Printing Concrete on temporary surfaces: The design and fabrication of a concrete shell structureBorg Costanzi, C. (author), Ahmed, Z. Y. (author), Schipper, H.R. (author), Bos, F. (author), Knaack, U. (author), Wolfs, R.J.H. (author)One of the geometrical restrictions associated with printed paste materials such as concrete, is that material must be self-supporting during printing. In this research paper a new methodology for 3D Printing Concrete onto a temporary freeform surface is presented. This is achieved by setting up a workflow for combining a Flexible Mould...journal article 2018
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Doornenbal, Barend (author)Compliant shell mechanisms are thin walled structures that achieve their motion through deformation. Shell mechanisms are of recent interest for designing exoskeletons that are inconspicuous. One of the challenges in designing shell mechanisms is getting as much compliance as possible in certain directions while keeping the other directions...master thesis 2018