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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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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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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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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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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
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Vermeulen, A.C.J. (author), Goldoust, Farshad (author), Sirenko, Mikhail (author), Hallak, Daniela (author), Lutkewitte, Brennan (author), Husárová, Lenka (author), Long, Kelvin F. (author), Brazier, F.M. (author)Space-based manufacturing is considered a crucial next step for the further development of human settlement in space. There are vast quantities of building resources distributed throughout space, with asteroids among the most apparent candidates for large-scale mining and resource provision. In this presentation, we present a hybrid...journal article 2019
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Cuellar Lopez, J.S. (author), Smit, G. (author), Breedveld, P. (author), Zadpoor, A.A. (author), Plettenburg, D.H. (author)In developing countries, the access of amputees to prosthetic devices is very limited. In a way to increase accessibility of prosthetic hands, we have recently developed a new approach for the design and 3D printing of non-assembly active hand prostheses using inexpensive 3D printers working on the basis of material extrusion technology. This...journal article 2019
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Zhao, Song Chuan (author), Maas, Mariska (author), Jansen, K.M.B. (author), van Hecke, Martin (author)Additive manufacturing strives to combine any combination of materials into 3D functional structures and devices, ultimately opening up the possibility of 3D printed machines. It remains difficult to actuate such devices, thus limiting the scope of 3D printed machines to passive devices or necessitating the incorporation of external actuators...journal article 2019
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Chaves Figueiredo, S. (author), Romero Rodriguez, C. (author), Ahmed, Zeeshan Y. (author), Bos, D. H. (author), Xu, Y. (author), Salet, Theo M. (author), Copuroglu, Oguzhan (author), Schlangen, E. (author), Bos, Freek P. (author)New additive manufacturing methods for cementitious materials hold a high potential to increase automation in the construction industry. However, these methods require new materials to be developed that meet performance requirements related to specific characteristics of the manufacturing process. The appropriate characterization methods of...journal article 2019
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Chaves Figueiredo, S. (author), Copuroglu, Oguzhan (author), Schlangen, E. (author)Significant attention has been given to the development of new materials and techniques to be employed in the construction market. One of the techniques which has drawn noticeable attention is the additive manufacturing process (a.k.a. 3-dimensional printing (3D printing)). One of the approaches of this construction technique is the extrusion of...journal article 2019
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Xu, Y. (author), Šavija, B. (author)Cracking in concrete needs to be limited for esthetical and durability reasons. Currently, this is commonly done by using steel rebars in the structure or fiber reinforcement in the material. With certain fiber types and micromechanical design, it is even possible to create cement-based materials with steel like (i.e. quasi-plastic) properties –...journal article 2019
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Yao, Yue (author), Hu, Mingming (author), Di Maio, F. (author), Cucurachi, Stefano (author)Three-dimensional (3D) printing and geo-polymers are two environmentally oriented innovations in concrete manufacturing. The 3D printing of concrete components aims to reduce raw material consumption and waste generation. Geo-polymer is being developed to replace ordinary Portland cement and reduce the carbon footprint of the binder in the...journal article 2019
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Elkhuizen, W.S. (author), Essers, T.T.W. (author), Song, Y. (author), Geraedts, Jo M.P. (author), Weijkamp, Clemens (author), Dik, J. (author), Pont, S.C. (author)High fidelity reproductions of paintings provide new opportunities to museums in preserving and providing access to cultural heritage. This paper presents an integrated system which is able to capture and fabricate color, topography and gloss of a painting, of which gloss capturing forms the most important contribution. A 3D imaging system,...journal article 2019
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Bekkering, Juliette (author), Kuit, Barbara (author), Hein, C.M. (author), Turrin, M. (author), Dik, J. (author), Hanna, J.M.K. (author), Alkadri, M.F. (author), Așut, Serdar (author), Knaack, U. (author), Koorstra, P.A. (author)Additive Manufacturing (commonly known as 3D printing) technology has become a global phenomenon. In the domain of heritage, 3D printing is seen as a time and cost efficient method for restoring vulnerable architectural structures. The technology can also provide an opportunity to reproduce missing or destroyed cultural heritage, in the cases...journal article 2019
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Xu, Y. (author), Zhang, H. (author), Šavija, B. (author), Chaves Figueiredo, S. (author), Schlangen, E. (author)A method is presented to model deformation and fracture behavior of 3D printed disordered lattice materials under uniaxial tensile load. A lattice model was used to predict crack pattern and load-displacement response of the printed lattice materials. To include the influence of typical layered structures of 3D printed materials in the...journal article 2019