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Elkhuizen, W.S. (author), Zaman, T. (author), Verhofstad, W. (author), Jonker, P.P. (author), Dik, J. (author), Geraedts, J.M.P. (author)Paintings are near-planar objects with material characteristics that vary widely. The fact that paint has a material presence is often overlooked, mostly because we often encounter these artworks in the form of two-dimensional reproductions. Capturing paintings in the third dimension is not only important for study, restoration and conservation,...conference paper 2014
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Van Wijk, A.J.M. (author), Van Wijk, I. (author)Additive manufacturing or 3D printing, manufacturing a product layer by layer, offers large design freedom and faster product development cycles, as well as low startup cost of production, on-demand production and local production. In principle, any product could be made by additive manufacturing. Even food and living organic cells can be...book 2015
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Zadpoor, A.A. (author), Hedayati, R. (author)Recent developments in additive manufacturing techniques have motivated an increasing number of researchers to study regular porous biomaterials that are based on repeating unit cells. The physical and mechanical properties of such porous biomaterials have therefore received increasing attention during recent years. One of the areas that have...journal article 2016
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Hedayati, R. (author), Sadighi, M. (author), Mohammadi-Aghdam, M (author), Zadpoor, A.A. (author)Honeycombs resemble the structure of a number of natural and biological materials such as cancellous bone, wood, and cork. Thick honeycomb could be also used for energy absorption applications. Moreover, studying the mechanical behavior of honeycombs under in-plane loading could help understanding the mechanical behavior of more complex 3D...journal article 2016
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Sauerwein, M. (author), Bakker, C.A. (author), Balkenende, R. (author)Circular product design is a relatively new approach to design suitable strategies to realize circular products. Additive manufacturing (AM) is seen as a promising enabling production process. It has digital and additive characteristics, which makes AM different from conventional production techniques. However, it is yet unclear how this...conference paper 2017
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Wang, Weiming (author), Li, Baojun (author), Qian, Sicheng (author), Liu, Yong-Jin (author), Wang, C.C. (author), Liu, Ligang (author), Yin, Baocai (author), Liu, Xiuping (author)Recently, 3D printing has become a powerful tool for personal fabrication. However, the price of some materials is still high which limits its applications in home users. To optimize the volume of the model, while not largely affecting the strength of the objects, researchers propose algorithms to divide the model with different kinds of...journal article 2017
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Kuipers, Tim (author), Doubrovski, E.L. (author), Verlinden, J.C. (author)This work presents halftoning techniques to manufacture 3D objects with the appearance of full grayscale imagery for Fused Deposition Modeling (FDM) printers. While droplet-based dithering is a common halftoning technique, this is not applicable to FDM printing, since FDM builds up objects by extruding material in semi-continuous paths. A set...conference paper 2017
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Yang, Y. (author), Ayas, C. (author)The Selective laser melting (SLM) is a powder based additive manufacturing (AM) method to produce high density metal parts with complex topology. However, part distortions and accompanying residual stresses deteriorates the mechanical reliability of SLM products. Modelling of the SLM process is anticipated to be instrumental for understanding...conference paper 2017
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Yang, Y. (author), Ayas, C. (author)Selective laser melting (SLM) is a powder based additive manufacturing technique suitable for producing high precision metal parts. However, distortions and residual stresses within products arise during SLM because of the high temperature gradients created by the laser heating. Residual stresses limit the load resistance of the product and...conference paper 2017
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Van Den Brink, W. M. (author), Van Der Klift, F. (author), Bruins, R. (author), Hermans, M.J.M. (author)Recent developments in the field of plastic additive manufacturing have seen the introduction of carbon fibres in printed products. These fibres improve the strength and stiffness of the thermoplastic based components. Two approaches are currently seen, the very short fibre embedded in the printing filament and continuous fibres, where the...conference paper 2017
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Lehner, B. (author), Schmieden, D.T. (author), Meyer, A.S. (author)Sustainable and personally tailored materials production is an emerging challenge to society. Living organisms can produce and pattern an extraordinarily wide range of different molecules in a sustainable way. These natural systems offer an abundant source of inspiration for the development of new environmentally friendly materials production...journal article 2017
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Cuellar Lopez, J.S. (author), Smit, G. (author), Plettenburg, D.H. (author), Zadpoor, A.A. (author)Fabrication of complex and multi-articulated mechanisms is often seen as a time consuming and demanding process. The development of functional multi-articulated mechanisms that could be fabricated in a single step without the need for post-manufacturing assembly is therefore very attractive. Additive manufacturing (AM) has been pointed out as...review 2018
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Vermeulen, A.C.J. (author), Sirenko, Mikhail (author), Kiem, Jason (author), Theys, Andreas (author), Brazier, F.M. (author), Papic González, Alvaro (author)The hostile and unpredictable environment of deep space requires a new conceptual approach for interstellar flight, one that differs radically from any current design in aerospace. A design solution is proposed in which the starship is attached to a C-type asteroid and whose architecture evolves over time. The starship gradually mines...conference paper 2018
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Wang, Weiming (author), Liu, Yong-Jin (author), Wu, J. (author), Tian, Shengjing (author), Wang, C.C. (author), Liu, Ligang (author), Liu, Xiuping (author)Offsetting-based hollowing is a solid modeling operation widely used in 3D printing, which can change the model's physical properties and reduce the weight by generating voids inside a model. However, a hollowing operation can lead to additional supporting structures for fabrication in interior voids, which cannot be removed. As a consequence...journal article 2018
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Schmieden, D.T. (author), Basalo Vázquez, Samantha J. (author), Sangüesa, Héctor (author), van der Does, M. (author), Idema, T. (author), Meyer, A.S. (author)Biofilms can grow on virtually any surface available, with impacts ranging from endangering the lives of patients to degrading unwanted water contaminants. Biofilm research is challenging due to the high degree of biofilm heterogeneity. A method for the production of standardized, reproducible, and patterned biofilm-inspired materials could...journal article 2018
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Liu, Xiuping (author), Lin, Liping (author), Wu, J. (author), Wang, W. (author), Yin, Baocai (author), Wang, C.C. (author)Wireframe models are becoming a popular option in 3D printing. Generating sparse wireframe models using classic mesh simplification methods leads to models that require a lot of support structures in the layer-upon-layer additive process. In this paper we present a mesh simplification method that takes into account the overhang angle....journal article 2018
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Zadpoor, A.A. (author)Additive manufacturing (AM) (=3D printing) has emerged during the last few years as a powerful technological platform for fabrication of functional parts with unique complex geometries and superior functionalities that are next to impossible to achieve using conventional manufacturing techniques. Due to their importance in industrial...contribution to periodical 2018
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Mirzaali, Mohammad J. (author), Caracciolo, A. (author), Pahlavani, H. (author), Janbaz, S. (author), Vergani, L. (author), Zadpoor, A.A. (author)Up until recently, the rational design of mechanical metamaterials has usually involved devising geometrical arrangements of micro-architectures that deliver unusual properties on the macro-scale. A less explored route to rational design is spatially distributing materials with different properties within lattice structures to achieve the...journal article 2018
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Dai, C. (author), Wang, C.C. (author), Wu, Chenming (author), Lefebre, Sylvain (author), Fang, G. (author), Liu, Yong-Jin (author)This paper presents a new method to fabricate 3D models on a robotic printing system equipped with multi-axis motion. Materials are accumulated inside the volume along curved tool-paths so that the need of supporting structures can be tremendously reduced - if not completely abandoned - on all models. Our strategy to tackle the challenge of...journal article 2018
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Boon, C.W. (author), van Wee, G.P. (author)Consumer 3D printing is on the rise and has the potential to significantly change the transport and logistics sector. Current literature on 3D printing and transport studies does not provide a systematic model of the impact of 3D printing on transport and related (policy relevant) areas, such as traffic safety, location decisions,...journal article 2018