Academic literature on the topic '3D extruded geometries'

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Journal articles on the topic "3D extruded geometries"

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Teixeira, João, Cecília Ogliari Schaefer, Lino Maia, Bárbara Rangel, Rui Neto, and Jorge Lino Alves. "Influence of Supplementary Cementitious Materials on Fresh Properties of 3D Printable Materials." Sustainability 14, no. 7 (2022): 3970. http://dx.doi.org/10.3390/su14073970.

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The development of printers and materials for 3D Printing Construction during the last two decades has allowed the construction of increasingly complex projects. Some of them have broken construction speed records due to the simplification of the construction process, particularly in non-standard geometries. However, for performance and security reasons the materials used had considerable amounts of Portland cement (PC), a constituent that increases the cost and environmental impact of 3D Printable Materials (3DPM). Supplementary Cement Materials (SCM), such as fly ash, silica fume and metakao
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Sciannandrone, Daniele, Simone Santandrea, and Richard Sanchez. "Optimized tracking strategies for step MOC calculations in extruded 3D axial geometries." Annals of Nuclear Energy 87 (January 2016): 49–60. http://dx.doi.org/10.1016/j.anucene.2015.05.014.

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Buj-Corral, Irene, José Antonio Padilla, Joaquim Minguella-Canela, Lourdes Rodero, Lluís Marco, and Elena Xuriguera. "Design of Pastes for Direct Ink Writing of Zirconia Parts with Medical Applications." Key Engineering Materials 958 (October 5, 2023): 157–63. http://dx.doi.org/10.4028/p-izk9dd.

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Direct ink writing (DIW) is an extrusion additive manufacturing (AM) technique in which inks are extruded through a nozzle and then deposited layer-by-layer. This technology allows 3D printing many different materials such as ceramics, metals, food, etc. In this work, the performance of zirconia pastes is addressed. The pastes are composed of yttria stabilized zirconia (YSZ) powder and a polymeric binder. Ceramic content is a mix of two components: A and B. Both the total content of ceramic and the content of component A in the paste are varied, according to a 32 design of experiments. The pas
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Rufo-Martín, Celia, José Díaz-Álvarez, and Diego Infante-García. "Influence of PMMA 3D Printing Geometries on the Mechanical Response." Key Engineering Materials 958 (October 5, 2023): 31–39. http://dx.doi.org/10.4028/p-9tor3c.

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This work presents a study regarding the mechanical characterization of polymethyl methacrylate (PMMA) patterned samples manufactured via material-extruded additive manufacturing. In recent years, literature about mechanical analysis in additive manufacturing has been growing increasingly, especially for material extrusion-based techniques. However, this trend surpasses the speed of information released by standard councils, existing no clear specifications for polymer characterization apart from conventional techniques. This issue has led to premature breakage as well as fracture not located
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Graziano, Laurent, Simone Santandrea, and Daniele Sciannandrone. "Polynomial axial expansion in the Method of Characteristics for neutron transport in 3D extruded geometries." EPJ Web of Conferences 153 (2017): 06027. http://dx.doi.org/10.1051/epjconf/201715306027.

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Mitchell, Kellen, Lily Raymond, and Yifei Jin. "Material Extrusion Advanced Manufacturing of Helical Artificial Muscles from Shape Memory Polymer." Machines 10, no. 7 (2022): 497. http://dx.doi.org/10.3390/machines10070497.

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Rehabilitation and mobility assistance using robotic orthosis or exoskeletons have shown potential in aiding those with musculoskeletal disorders. Artificial muscles are the main component used to drive robotics and bio-assistive devices. However, current fabrication methods to produce artificial muscles are technically challenging and laborious for medical staff at clinics and hospitals. This study aims to investigate a printhead system for material extrusion of helical polymer artificial muscles. In the proposed system, an internal fluted mandrel within the printhead and a temperature contro
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Kothavade, Premkumar, Abdullah Kafi, Chaitali Dekiwadia, et al. "Extrusion 3D Printing of Intrinsically Fluorescent Thermoplastic Polyimide: Revealing an Undisclosed Potential." Polymers 16, no. 19 (2024): 2798. http://dx.doi.org/10.3390/polym16192798.

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Thermoplastic polyimides (TPIs) are promising lightweight materials for replacing metal components in aerospace, rocketry, and automotive industries. Key TPI attributes include low density, thermal stability, mechanical strength, inherent flame retardancy, and intrinsic fluorescence under UV light. The application of advanced manufacturing techniques, especially 3D printing, could significantly broaden the use of TPIs; however, challenges in melt-processing this class of polymer represent a barrier. This study explored the processability, 3D-printing and hence mechanical, and fluorescence prop
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Nikfarjam, F., Y. Cheny, and O. Botella. "The LS-STAG immersed boundary/cut-cell method for non-Newtonian flows in 3D extruded geometries." Computer Physics Communications 226 (May 2018): 67–80. http://dx.doi.org/10.1016/j.cpc.2018.01.006.

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Ferro, Paolo, Alberto Fabrizi, Hamada Elsayed, and Gianpaolo Savio. "Multi-Material Additive Manufacturing: Creating IN718-AISI 316L Bimetallic Parts by 3D Printing, Debinding, and Sintering." Sustainability 15, no. 15 (2023): 11911. http://dx.doi.org/10.3390/su151511911.

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Allowing for complex shape and low energy consumption, 3D printing, debinding, and sintering (PDS) is a promising and cost-effective additive manufacturing (AM) technology. Moreover, PDS is particularly suitable for producing bimetallic parts using two metal/polymer composite filaments in the same nozzle, known as co-extrusion, or in different nozzles, in a setup called bi-extrusion. The paper describes a first attempt to produce bimetallic parts using Inconel 718 and AISI 316L stainless steel via PDS. The primary goal is to assess the metallurgical characteristics, part shrinkage, relative de
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Cai, Yuanzhi, and Lei Fan. "An Efficient Approach to Automatic Construction of 3D Watertight Geometry of Buildings Using Point Clouds." Remote Sensing 13, no. 10 (2021): 1947. http://dx.doi.org/10.3390/rs13101947.

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Recent years have witnessed an increasing use of 3D models in general and 3D geometric models specifically of built environment for various applications, owing to the advancement of mapping techniques for accurate 3D information. Depending on the application scenarios, there exist various types of approaches to automate the construction of 3D building geometry. However, in those studies, less attention has been paid to watertight geometries derived from point cloud data, which are of use to the management and the simulations of building energy. To this end, an efficient reconstruction approach
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Dissertations / Theses on the topic "3D extruded geometries"

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Le, Bars Arthur. "Surface characteristics scheme for the neutron transport equation in extruded and non-conformal 3D geometries." Electronic Thesis or Diss., université Paris-Saclay, 2024. http://www.theses.fr/2024UPASP162.

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Le travail de la thèse se compose de deux parties. La première partie se focalise sur le développement d’un schéma (transport + accélération) aux caractéristiques linéaire surfacique pour la résolution de l’équation du transport sur des géométries 3D extrudées. À présent, seule l’approximation constante peut être utilisée. La différence entre les deux méthodes réside dans le fait que pour l’une la vitesse de convergence au maillage est linéaire (approximation constante) alors qu’elle est quadratique pour l’autre méthode (approximation surfacique linéaire). Pratiquement, la dernière méthode per
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Book chapters on the topic "3D extruded geometries"

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Gorobets, A., F. X. Trias, M. Soria, C. D. Pérez-Segarra, and A. Oliva. "From extruded-2D to fully-3D geometries for DNS: a Multigrid-based extension of the Poisson solver." In Lecture Notes in Computational Science and Engineering. Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-14438-7_23.

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Peterson, Eric, and Bhavleen Kaur. "Printing Compound-Curved Sandwich Structures with Robotic Multi-Bias Additive Manufacturing." In Computational Design and Robotic Fabrication. Springer Nature Singapore, 2024. http://dx.doi.org/10.1007/978-981-99-8405-3_44.

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AbstractA research team at Florida International University Robotics and Digital Fabrication Lab has developed a novel method for 3d-printing curved open grid core sandwich structures using a thermoplastic extruder mounted on a robotic arm. This print-on-print additive manufacturing (AM) method relies on the 3d modeling software Rhinoceros and its parametric software plugin Grasshopper with Kuka-Parametric Robotic Control (Kuka-PRC) to convert NURBS surfaces into multi-bias additive manufacturing (MBAM) toolpaths. While several high-profile projects including the University of Stuttgart ICD/IT
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Unger, Nicolas, Pradnil Kamble, and Timo Huse. "Novel Slicing Algorithm for Hybrid Manufacturing on Non-planar Surfaces with Robotic SEAM." In ARENA2036. Springer Nature Switzerland, 2025. https://doi.org/10.1007/978-3-031-88831-1_4.

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Abstract Combining conventional with additive manufacturing processes opens up new possibilities for the flexible, economical production of complex automotive components and structures with varying geometries. This hybrid manufacturing approach can be realized by 3D-Printing functional structures onto pre-existing parts and surfaces with Robotic Screw Extrusion Additive Manufacturing (RSEAM). RSEAM combines the dexterity of industrial robotic arms with the productivity and extensive material range of a screw extruder to provide a highly flexible additive manufacturing process. This paper addre
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Conference papers on the topic "3D extruded geometries"

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Bars, Arthur, Simone Santandrea, and Sandra Dulla. "Surface Characteristics Scheme for Solving the Transport Equation in Extruded and Unstructured 3D Geometries." In International Conference on Physics of Reactors (PHYSOR 2024). American Nuclear Society, 2024. http://dx.doi.org/10.13182/physor24-43563.

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Sethy, Girija Kumari, and Raghu V. Prakash. "Understanding Progressive Buckling in Extruded Square Tubes Using Multiple Measurement Techniques." In ASME 2016 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/imece2016-65484.

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Thin walled structures are widely used as energy absorbing devices during accidents, collisions in various transportation systems. Designing an energy absorbing device requires proper combination of geometry and material. The deformation behavior and collapse modes of these structures are complex. Simple geometries with square, polygonal or circular cross section deform with various collapse modes for energy absorption in these structures. In the present work, square extruded Aluminum tubes are axially compressed under quasistatic loading. Infra-red thermal imaging is done to measure the rise
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Cleeman, Jeremy, Alex Bogut, Brijesh Mangrolia, et al. "Multiplexed 3D Printing of Thermoplastics." In ASME 2022 17th International Manufacturing Science and Engineering Conference. American Society of Mechanical Engineers, 2022. http://dx.doi.org/10.1115/msec2022-80882.

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Abstract Extrusion-based additive manufacturing of large thermoplastic structures has significant emerging applications. The most popular approach to economically achieving such 3D printing is to increase the polymer flow rate along with the layer height and line width. However, this creates a fundamental compromise between the achievable geometric fidelity and the printing throughput. We explore a Multiplexed Fused Filament Fabrication (MF3) approach in which an array of FFF extruders concurrently prints different sections of the same part using small layer heights and line widths. Mounting a
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Ang, Karl Jin, Katherine S. Riley, Jakob Faber, and Andres F. Arrieta. "Switchable Bistability in 3D Printed Shells With Bio-Inspired Architectures and Spatially Distributed Pre-Stress." In ASME 2018 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/smasis2018-8208.

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Using fused deposition modeling (FDM) 3D printing, we combine a bio-inspired bilayer architecture with distributed pre-stress and the shape memory behavior of polylactic acid (PLA) to manufacture shells with switchable bistability. These shells are stiff and monostable at room temperature, but become elastic and bistable with fast morphing when heated above their glass transition temperature. When cooled back down, the shells retain the configuration they were in at the elevated temperature and return to being stiff and monostable. These programmed deformations result from the careful design a
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Lontos, A., K. D. Bouzakis, G. Demosthenous, and A. Baldoukas. "FEM Simulation of the Whole Circle of Aluminum Hot Extrusion Using Circular Dies With Different Extrusion Angle." In ASME 8th Biennial Conference on Engineering Systems Design and Analysis. ASMEDC, 2006. http://dx.doi.org/10.1115/esda2006-95026.

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On of the most typical forming processes used for the production of long, straight semi-finished products in the form of various section geometries is extrusion. Hot extrusion is a thermo-mechanical process whish involves complicated interactions between process parameters, tooling and deforming material /1,2/. In the present paper, FEM simulation is performed in the aluminum extrusion using circular dies with different geometries in order to extract quantitative simulating results regarding various forming parameters. Most specifically the parameters that are investigated are the die design-g
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Prša, Jelena, Franz Irlinger, and Tim C. Lueth. "Algorithm for Detecting and Solving the Problem of Under-Filled Pointed Ends Based on 3D Printing Plastic Droplet Generation." In ASME 2014 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/imece2014-36573.

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In this paper the problem of under-filled pointed ends is introduced and mathematically defined. To tackle this problem, we present a new algorithm that detects and fills the critical areas, which arise at the 3D printed plastic parts. While printing the contours and/or infill lines, due to the limitations based on the width of the extruded material, narrow edges and pointed ends remain improperly filled. This eventually results in 3D printed objects with the final geometry that differs greatly from the initial geometry. This paper presents the fundamentals for solving the problem of 3D printi
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Lischke, Fabian, and Andres Tovar. "Design of Self-Supported 3D Printed Parts for Fused Deposition Modeling." In ASME 2016 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/detc2016-60569.

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One of the primary challenges faced in Additive Manufacturing (AM) is reducing the overall cost and printing time. A critical factor in cost and time reduction is post-processing of 3D printed (3DP) parts, of which removing support structures is one of the most time consuming steps. Support is needed to prevent the collapse of the part or certain areas under its own weight during the 3D printing process. Currently, the design of self-supported 3DP parts follows a set of empirical guide lines. A trial and error process is needed to produce high quality parts by Fused Depositing Modeling (FDM).
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Al-Kharusi, Moosa S. M., Mohammed S. Al Owiemri, and Farooq K. S. Al Jahwari. "Finite Element Modeling and Additive Manufacturing of High-Density Polyethylene Micro/Nano-Hydroxyapatite Composites for Biomedical Implants." In ASME 2024 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2024. https://doi.org/10.1115/imece2024-144353.

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Abstract This study examines the development and characterization of High-Density Polyethylene (HDPE) composites enhanced with micro and nano-Hydroxyapatite (HA), aimed at optimizing their utility in biomedical implants through the integration of Finite Element Modeling (FEM) and additive manufacturing techniques. Initial fabrication utilized a twin-screw extrusion process to create a variety of composite formulations, which were then molded and subjected to comprehensive mechanical testing to assess their suitability for orthopedic applications. These tests revealed that nano-HA particularly
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DOJAN, CARTER, MORTEZA ZIAEE, and MOSTAFA YOURDKHANI. "RAPID AND SCALABLE ADDITIVE MANUFACTURING OF THERMOSET POLYMER COMPOSITES." In Proceedings for the American Society for Composites-Thirty Seventh Technical Conference. Destech Publications, Inc., 2022. http://dx.doi.org/10.12783/asc37/36457.

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Additive manufacturing (AM) has recently been transformed into a robust manufacturing paradigm for rapid, cost-effective, and reliable manufacturing of fiberreinforced thermoset polymer composites. Among various AM techniques, direct ink writing (DIW) technique offers exceptional ability for constructing scalable 3D composite structures with a high resolution and rapid production rates. In the conventional DIW technique, composite parts are created by thermal post-curing of a thermoset resin ink in an oven at elevated temperatures to obtain a highly crosslinked polymer network. The long and en
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Bae, Heechang Alex, Mickenzie Kinney, Tyler Scheff, Matthew Michaelis, and Awlad Hossain. "Investigating the Effects of Acetone Vapor Treatment Conditions and Post Drying Methods on Surface Roughness and Tensile Strength of 3D Printed ABS Components." In ASME 2023 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2023. http://dx.doi.org/10.1115/imece2023-113811.

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Abstract Additive manufacturing (AM) or 3D printing is a fabrication process, usually layer upon layer, of joining materials to make the desired objects directly from a 3D model. 3D printing allows for complex geometries that would be difficult, if not impossible to create using traditional subtractive methods such as milling, grinding, casting, etc. The nature of the additive process also allows the user to avoid or minimize costs that would be incurred if setting up with a traditional subtractive process. With AM there is no need for fixtures, tooling, or multiple processes to complete the p
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