Academic literature on the topic 'Large scale 3D printing'

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Journal articles on the topic "Large scale 3D printing"

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Lavine, Marc S. "Large-scale, continuous 3D printing." Science 366, no. 6463 (October 17, 2019): 320.3–320. http://dx.doi.org/10.1126/science.366.6463.320-c.

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Al Jassmi, Hamad, Fady Al Najjar, and Abdel-Hamid Ismail Mourad. "Large-Scale 3D Printing: The Way Forward." IOP Conference Series: Materials Science and Engineering 324 (March 2018): 012088. http://dx.doi.org/10.1088/1757-899x/324/1/012088.

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Yuan, Jiangping, Zhaohui Yu, Guangxue Chen, Ming Zhu, and Yanfei Gao. "Large-size color models visualization under 3D paper-based printing." Rapid Prototyping Journal 23, no. 5 (August 22, 2017): 911–18. http://dx.doi.org/10.1108/rpj-08-2015-0099.

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Purpose The purpose of this paper is to study a feasible visualization of large-size three-dimension (3D) color models which are beyond the maximum print size of newest paper-based 3D printer used 3D cutting-bonding frame (3D-CBF) and evaluate the effects of cutting angle and layout method on printing time of designed models. Design/methodology/approach Sixteen models, including cuboid model, cylinder model, hole model and sphere model with different shape features, were divided into two symmetric parts and printed by the Mcor IRIS HD 3D printer. Before printing, two sub-parts were rearranged in one of three layout methods. Nine scaled sizes of original models were printed to find the quantitative relationship between printing time and scale values in each type. For the 0.3 times of original models, six cutting angles were evaluated in detail. Findings The correlation function about colorization time and printed pages was proposed. Based on 3D-CBF, the correlation between printing time and scale size is statistically defined. Optimization parameters of designed parts visualization about cutting angel and layout method were found, even if their statistical results were difficult to model their effects on printing time of specimens. Research limitations/implications The research is comparative and limited to the special models and used procedures. Originality/value The paper provides a feasible visualization and printing speed optimization methods for the further industrialization of 3D paper-based printing technology in cultural creative field.
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Puzatova, Anastasia, Pshtiwan Shakor, Vittoria Laghi, and Maria Dmitrieva. "Large-Scale 3D Printing for Construction Application by Means of Robotic Arm and Gantry 3D Printer: A Review." Buildings 12, no. 11 (November 18, 2022): 2023. http://dx.doi.org/10.3390/buildings12112023.

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Additive manufacturing technologies are becoming more popular in various industries, including the construction industry. Currently, construction 3D printing is sufficiently well studied from an academic point of view, leading towards the transition from experimental to mass large-scale construction. Most questions arise about the applicability of construction 3D printers for printing entire buildings and structures. This paper provides an overview of the different types of construction 3D printing technologies currently in use, and their fundamental differences, as well as some significant data on the advantages of using these advanced technologies in construction. A description of the requirements for composite printing is also provided, with possible issues that may arise when switching from lab-scale construction printing to mass large-scale printing. All printers using additive manufacturing technologies for construction are divided into three types: robotic arm printers, portal-type printers, and gantry 3D printers. It is noted that gantry printers are more suitable for large-scale printing since some of their configurations have the ability to construct buildings that are practically unlimited in size. In addition, all printers are not capable of printing with concrete containing a coarse aggregate, which is a necessary requirement in terms of the strength and economic feasibility of 3D printing material for large-scale applications.
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Krčma, Martin, David Škaroupka, Petr Vosynek, Tomáš Zikmund, Jozef Kaiser, and David Palousek. "Use of polymer concrete for large-scale 3D printing." Rapid Prototyping Journal 27, no. 3 (February 27, 2021): 465–74. http://dx.doi.org/10.1108/rpj-12-2019-0316.

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Purpose This paper aims to focus on the evaluation of a polymer concrete as a three-dimensional (3D) printing material. An associated company has developed plastic concrete made from reused unrecyclable plastic waste. Its intended use is as a construction material. Design/methodology/approach The concrete mix, called PolyBet, composed of polypropylene and glass sand, is printed by the fused deposition modelling process. The process of material and parameter selection is described. The mechanical properties of the filled material were compared to its cast state. Samples were made from castings and two different orientations of 3D-printed parts. Three-point flex tests were carried out, and the area of the break was examined. Computed tomography of the samples was carried out. Findings The influence of the 3D printing process on the material was evaluated. The mechanical performance of the longitudinal samples was close to the cast state. There was a difference in the failure mode between the states, with cast parts exhibiting a tougher behaviour, with fractures propagating in a stair-like manner. The 3D-printed samples exhibited high degrees of porosity. Originality/value The results suggest that the novel material is a good fit for 3D printing, with little to no degradation caused by the process. Layer adhesion was shown to be excellent, with negligible effect on the finished part for the longitudinal orientation. That means, if large-scale testing of buildability is successful, the material is a good fit for additive manufacturing of building components and other large-scale structures.
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Izard, Jean-Baptiste, Alexandre Dubor, Pierre-Elie Hervé, Edouard Cabay, David Culla, Mariola Rodriguez, and Mikel Barrado. "Large-scale 3D printing with cable-driven parallel robots." Construction Robotics 1, no. 1-4 (August 30, 2017): 69–76. http://dx.doi.org/10.1007/s41693-017-0008-0.

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Barnett, Eric, and Clément Gosselin. "Large-scale 3D printing with a cable-suspended robot." Additive Manufacturing 7 (July 2015): 27–44. http://dx.doi.org/10.1016/j.addma.2015.05.001.

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He, Jianjia, Jian Wu, Ye Zhang, Yaopeng Wang, and Hua He. "Large-Scale Customized Production Scheduling of Multiagent-Based Medical 3D Printing." Computational Intelligence and Neuroscience 2022 (July 18, 2022): 1–13. http://dx.doi.org/10.1155/2022/6557137.

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Three-dimensional (3D) printing, also known as additive manufacturing, has unique advantages over traditional manufacturing technologies; thus, it has attracted widespread attention in the medical field. Especially in the context of the frequent occurrence of major public health events, where the medical industry’s demand for large-scale and customized production is increasing, traditional 3D printing production scheduling methods take a long time to handle large-scale customized medical 3D printing (M-3DP) production and have weak intelligent collaboration ability in the face of job-to-device matching under multimaterial printing. Given the problem caused by M-3DP large-scale customized production scheduling, an intelligent collaborative scheduling multiagent-based method is proposed in this study. First, a multiagent-based optimization model is established. On this basis, an improved genetic algorithm embedded with the product mix strategy and the intelligent matching mechanism is designed to optimize the completion time and load balance between devices. Finally, the effectiveness of the proposed method is evaluated using numerical simulation. The simulation results indicated that compared with the simple genetic algorithm, particle swarm optimization, and snake optimizer, the improved genetic algorithm could better reduce the M-3DP mass customization production scheduling time, optimize the load balance between devices, and promote the “intelligent manufacturing” process of M-3DP mass customization.
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Lv, Jianran, Hongyao Shen, and Jianzhong Fu. "Large-scale 3D printing technology based on the visual stitching method." Rapid Prototyping Journal 25, no. 7 (August 12, 2019): 1232–40. http://dx.doi.org/10.1108/rpj-03-2019-0059.

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Purpose 3D printing for objects whose size exceeds the scope of the printer is still a tough challenge in application. The purpose of this paper is to propose a visual stitching large-scale (VSLS) 3D-printing method to solve this problem. Design/methodology/approach The single segmentation point method and multiple segmentation point method are proposed to adaptively divide each slice of the model into several segments. For each layer, the mobile robot will move to different positions to print each segment, and every time it arrives at the planned location, the contours of the printed segments are captured with a high-definition camera by the feature point recognition algorithm. Then, the coordinate transformation is implemented to adjust the printing codes of the next segment so that each part can be perfectly aligned. The authors print up layer by layer in this manner until the model is complete. Findings In Section 3, two specimens, whose sizes are 166 per cent and 252 per cent of the scope of the 3D-printing robot, are successfully printed. Meanwhile, the completed models of the specimens are printed using a suitable traditional printer for comparison. The result shows that the specimens in the test group have basically identical sizes to those in the control group, which verifies the feasibility of the VSLS method. Originality/value Unlike most of the current solutions that demand harsh requirement for positioning accuracy of the mobile robots, the authors use a camera to compensate for the lost positioning accuracy of the device during movement, thereby avoiding precise control to the device’s location. And the coordinate transformation is implemented to adjust the printing codes of the next sub-models so that each part can be aligned perfectly.
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Zhang, Xu, Mingyang Li, Jian Hui Lim, Yiwei Weng, Yi Wei Daniel Tay, Hung Pham, and Quang-Cuong Pham. "Large-scale 3D printing by a team of mobile robots." Automation in Construction 95 (November 2018): 98–106. http://dx.doi.org/10.1016/j.autcon.2018.08.004.

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Dissertations / Theses on the topic "Large scale 3D printing"

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Barducci, Federica. "3D printing: l’evoluzione della tecnologia nel settore costruzioni." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2019.

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L’architettura nei suoi svariati settori di studio è sempre stata strettamente influenzata dalle innovazioni tecnologiche che ogni periodo storico ha presentato. All'inizio degli anni Ottanta questo sviluppo ha portato un salto da un approccio “analogico” ad approccio “digitale”. La modellazione tridimensionale ha conquistato una posizione importante nel mondo dell’architettura, sia come sostegno nella progettazione e produzione di edifici ex-novo che nel supporto per l’analisi e gestione dei manufatti esistenti. Lo sviluppo della modellazione tridimensionale ha trainato con se lo sviluppo di software dedicati, strumentazioni tecnologiche e tecnologie innovative sempre più accurate. Solo recentemente è stato compiuto un cambio di direzione, un’evoluzione tale da permetterci la materializzazione, per di più rapida, dei modelli che prima erano solo visualizzabili tramite uno schermo di un computer. La materializzazione rapida di tali modelli è nata con la comparsa delle prime tecniche di stampa tridimensionale o stampa 3D, tecnologia che sta riscuotendo un enorme successo e di conseguenza un notevole sviluppo in numerosi settori e discipline scientifiche, non solo nell’ambito dell’architettura. Questa tecnologia permette di modificare il paradigma produttivo fornendo vantaggi significativi come la diminuzione degli sprechi, la produzione di oggetti unici a costi molto inferiori rispetto ai metodi tradizionali e la possibilità di produrre oggetti con geometrie interne precedentemente impossibili da realizzare.
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Kaya, Fuat Emre. "Applications of Additive Manufacturing in Construction and Historic Building Restoration/Rehabilitation." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2021. http://amslaurea.unibo.it/22784/.

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The term “Additive Manufacturing” is described as the layered production of parts from a 3D file. Over the past century, this technology has evolved from a complement tool for conventional product development into an independent production method. Whereas high technology industries such as aerospace and medicine were already embraced additive manufacturing, structural engineering and architecture are lagging. Additive manufacturing has the potential to revolutionize the construction and restoration of historic buildings, with foreseeable benefits including highly complex and efficient structures with the reduction in material use and wastage, streamlining and expedition of the design-build process, improved customization. However, there are also challenges and demands: a new way of thinking for design and verifications for stability and serviceability of printed elements, the cost, the need for well-educated engineers. In this dissertation, the current state of additive manufacturing in construction and historic building restoration/rehabilitation is reviewed as a combination of qualitative and quantitative-based studies. The research aims to give confidence to additive manufacturing applicability in these fields and stimulate further research. The opportunities and challenges are discussed by analysing concrete, polymer, and metal-based processes and their applications of additive manufacturing in the construction sector. A review of structural and non-structural applications in restoration projects, possible future applications in terms of structural strengthening are analysed and opportunities and challenges are identified and discussed. Based on the literature review and experimental lab tests, the outcome was obtained as the tensile mechanical properties are adequate for structural engineering applications. However, further interdisciplinary research on additive manufacturing is necessary to build confidence in structural engineers and architects.
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Batlle, Subirós Elisabet. "Large-Scale Surface registration." Doctoral thesis, Universitat de Girona, 2008. http://hdl.handle.net/10803/7606.

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The first part of this work presents an accurate analysis of the most relevant 3D registration techniques, including initial pose estimation, pairwise registration and multiview registration strategies. A new classification has been proposed, based on both the applications and the approach of the methods that have been discussed.
The main contribution of this thesis is the proposal of a new 3D multiview registration strategy. The proposed approach detects revisited regions obtaining cycles of views that are used to reduce the inaccuracies that may exist in the final model due to error propagation. The method takes advantage of both global and local information of the registration process, using graph theory techniques in order correlate multiple views and minimize the propagated error by registering the views in an optimal way. The proposed method has been tested using both synthetic and real data, in order to show and study its behavior and demonstrate its reliability.
La primera part d'aquest treball presenta una anàlisi acurada de les tècniques de registre 3D es rellevants, incloent tècniques d'estimació de la posició inicial, registre pairwise i registre entre múltiples vistes. S'ha proposat una nova classificació de les tècniques, depenent de les seves aplicacions i de l'estratègia utilitzada.
La contribució mes important d'aquesta tesi és la proposta d'un nou mètode de registre 3D utilitzant múltiples vistes. El mètode proposat detecta regions ja visitades prèviament, obtenint cicles de vistes que s'utilitzen per tal de reduir els desalineaments en el model final deguts principalment a la propagació de l'error durant el procés de registre. Aquest mètode utilitza tant informació global com local, correlacionant les vistes mitjançant tècniques de grafs que permeten minimitzar l'error propagat i registrar les vistes de forma òptima. El mètode proposat ha estat provat utilitzant dades sintètiques i reals, per tal de mostrar i analitzar el seu comportament i demostrar la seva eficàcia.
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Vidal, Luciano. "Large bone defects reconstruction by using vascularization and 3D printing." Thesis, Nantes, 2019. http://www.theses.fr/2019NANT1034.

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La reconstruction de grands défauts osseux d’origine traumatique ou tumorale constitue un défi pour les orthopédistes et les chirurgiens plasticiens. Cette thèse est divisée en trois chapitres. Le premier chapitre décrit les différentes options chirurgicales actuelles et propose de nouvelles technologies telles que l’impression 3D dans la régénération de grands défauts osseux. La technique de référence en matière de reconstruction osseuse est la greffe autologue à lambeau libre qui contient les cellules du patient, ses facteurs de croissance et un apport vasculaire mais induit une morbidité importante au site de prélèvement. Le deuxième chapitre évalue une approche expérimentale consistant à produire in situ un greffon osseux synthétique pré-vascularisé et à le greffer dans un second temps dans un défaut osseux de taille critique chez le lapin. Cette étude animale démontre l’intérêt de la vascularisation dans la régénération osseuse mais nécessite deux chirurgies. Le troisième chapitre vise à étudier la faisabilité de régénérer de grands défauts osseux en une seule étape chirurgicale en utilisant des biomatériaux en phosphate de calcium personnalisés et imprimés en 3D, avec ou sans vascularisation. Cette dernière étude démontre la faisabilité de la planification pré-chirurgicale et de la reconstruction de grands défauts osseux avec des biomatériaux anatomiques et l’apport d'une vascularisation axiale dans la régénération osseuse. En conclusion, ce travail permet de proposer une nouvelle approche en médecine régénérative, personnalisée et vascularisée, pour la reconstruction de grands défauts osseux
Large bone defect reconstruction constitutes a challenge for orthopedists and plastic surgeons. This thesis is divided into three chapters. The first chapter gives a review of the current surgical options and future technologies such as 3D printing for regeneration of large bone defects. The gold standard technique for bone reconstruction is autologous free flap transplantation that contains patient’s own cells, growth factors and a vascularization bed but induces morbidity. The second chapter evaluates an experimental approach consisting of the in situ production of a pre-vascularized synthetic bone graft and its subsequent transplantation to a critical-sized bone defect in rabbits. This animal study demonstrated the benefit of pre-vascularization of synthetic bone grafts for regenerating large bone defects but still required two surgeries. The third chapter aimed to investigate the feasibility of regenerating large bone defects in one surgical step by using 3D-printed customized calcium phosphate scaffolds with or without vascularization. This pre-clinical study demonstrated the benefits of pre-surgical planning for reconstruction of large bone defects with 3Dprinted personalized scaffolds and axial vascularization. In conclusion, this works enables to propose a new approach in regenerative medicine with customized and vascularized for large bone defect reconstruction
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Chou, George Tao-Shun. "Large-scale 3D reconstruction : a triangulation-based approach." Thesis, Massachusetts Institute of Technology, 2000. http://hdl.handle.net/1721.1/86296.

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Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2000.
Includes bibliographical references (p. [153]-157).
by George Tao-Shun Chou.
Ph.D.
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Magaya, Tafadzwa A. "Additive manufacturing (3 D printing) : challenges and opportunities for large scale adoption." Thesis, Massachusetts Institute of Technology, 2017. http://hdl.handle.net/1721.1/111466.

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Thesis: M.B.A., Massachusetts Institute of Technology, Sloan School of Management, 2017.
Cataloged from PDF version of thesis.
Includes bibliographical references.
3D printing (additive manufacturing) has been around for more than 30 years. A lot of technological progress has been made in that time, most recently with new innovations such as metal 3D printing. Although the technology seems to hold a lot of promise, the rate of adoption has not lived up to the hype. The aim of this thesis is to research what has stopped 3D printing from catching on faster? What factors are hindering large scale adoption for mass production? We apply the "Iterating to Insights" framework to analyze technology limitations, market dynamics, business models and industry structure and to develop strategic insights that are surprising yet compelling. Our end goal was to develop a set of insights that can be used by an investor in a 3D printing company to evaluate whether an application or market being pursued by a potential investment is worthwhile or not.
by Tafadzwa A. Magaya.
M.B.A.
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Marsh, Georgina E. "Utilising micron-scale 3D printing to investigate particulate interactions for respiratory applications." Thesis, University of Nottingham, 2018. http://eprints.nottingham.ac.uk/50247/.

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In order to achieve drug delivery via the respiratory route, an understanding of particulate interactions is of vital importance. For successful delivery to the distal airways, an aerodynamic diameter of less than 5 μm must be achieved. However, particles of this size presents a difficult formulation challenge, due to the inherent cohesiveness between particles and adhesion to the device, due to the high surface to volume ratio of such small particles, causing the particles to clump together. This tendency will thereby cause a reduction in dispersion, aerosolisation and device efficiency; for this reason dry powder inhalers (DPIs) invariably fail to achieve a fine particle fraction efficiency above 15%. There are a wide variety of factors which affect particulate interactions including; surface roughness, surface chemistry, particle size or shape and particle mechanical properties. However, these factors are highly interrelated and so previous attempts to investigate their effect on particle adhesion generally have difficulty isolating the impact of each factor. For instance, investigating the effect of morphology on particulate interactions invariably utilise destructive techniques to alter the roughness, which is likely to alter other factors like surface energy and provide limited control for optimisation. With the rise of 3D printing (additive manufacturing) there is now the capability to produce sub- micron morphologies, and so a bottom-up approach to studying the effect of morphology on particulate interactions can be achieved. The aims of this thesis are therefore twofold. Firstly, to identify, optimise and evaluate a suitable additive manufacturing technique to produce well-defined micron scale morphologies appropriate for furthering the understanding of the importance of morphology on particle adhesion. This is a scale which is at least two orders of magnitude improvement on current state of the art 3D inkjet printers. Secondly, to measure the effect on particle adhesion and deposition to these morphologies, both on an individual particle and on a bulk powder basis, allowing elucidation and understanding of the effect of surface roughness on particle adhesion, with a specific focus on respiratory drug delivery. Printing well defined geometries of an appropriate micron scale size range for particle adhesion testing has been achieved, using two photon polymerisation (TPP). TPP is a novel 3D printing technique which as its name suggests involves the curing of usually acrylate containing polymer resins by the absorption of two infra-red photons in the focus of the laser beam. TPP has been shown to produce a sub-diffraction limit lateral resolution of 120 nm. By optimising the printer parameters and experimentation with differing structure fill and input settings the creation of a well- defined curve on a micron scale was achieved. The initial test morphologies comprised of a ridge with a semi-circular top with a diameter of 1 μm, which were shown to be reproducibly printed. These morphologies were then varied in a controllable fashion with varying ridge height and spacing between the ridges. A uniform and consistent surface chemistry was created using a plasma polymerised hexane (ppHex) coating. In order to evaluate particulate interactions relevant to pulmonary drug delivery both an understanding of the effect of morphology on both individual particle adhesion and bulk powder deposition in a fluid environment is needed. Individual particle-surface adhesion was achieved by testing the TPP structures against three particle types using single particle colloidal probe microscopy (polystyrene beads diameter 10 μm and 5 μm and a lactose particle designed for inhalation formulations). The analysis of this data provides evidence of a clear trend between particle contact area and adhesion recorded both on the ppHex control and the TPP coated morphologies. The TPP morphologies are shown to locally reduce the overall adhesion, in comparison to the flat substrate. The ridge height is also seen to have a significant effect on particle adhesion, with 5 μm < 3 μm < 1 μm for the polystyrene beads, but 3 μm < 5 μm < 1 μm for the Respitose SV003 lactose particle for all ridge spacings. Varying the ridge spacing produced two differing trends in adhesion to the polystyrene beads. If the particle was unable to penetrate the valleys of the roughness, for the 1 μm high ridges, a significant effect on particle adhesion was seen with 3 μm < 1 μm for the polystyrene beads. In contrast, the 3 μm and 5 μm high ridges showed the opposite trend when the particle is unable to descend between the ridges with 1 μm < 3 μm < 8 μm for the polystyrene beads. Investigation of the bulk powder deposition of the particles on the TPP structures and any subsequent re-entrainment in a fluid environment was then achieved using a novel methodology developed during the course of this work. This combines the use of a standard next generation impactor, which generally is used to separate out a respiratory formulation based on aerodynamic diameter, with the TPP substrates. This shows that ridge height has a significant effect on particle adhesion with 3 μm < 1 μm < 5 μm. In contrast, the different spacings of the ridges were not shown to produce a significant difference in particle deposition. This is likely due to the conflicting effect of asperity spacing on the processes of particle deposition and re-entrainment. This thesis therefore highlights the capability of TPP, to produce well-defined micron scale structures with varying morphologies. It then shows that these can be successfully utilised to provide valuable insight into the effect of surface morphology on particle- surface interactions, specifically; adhesion, deposition and re-entrainment.
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Pietrok, Jack. "Real-Time Stylized Rendering for Large-Scale 3D Scenes." DigitalCommons@CalPoly, 2021. https://digitalcommons.calpoly.edu/theses/2331.

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While modern digital entertainment has seen a major shift toward photorealism in animation, there is still significant demand for stylized rendering tools. Stylized, or non-photorealistic rendering (NPR), applications generally sacrifice physical accuracy for artistic or functional visual output. Oftentimes, NPR applications focus on extracting specific features from a 3D environment and highlighting them in a unique manner. One application of interest involves recreating 2D hand-drawn art styles in a 3D-modeled environment. This task poses challenges in the form of spatial coherence, feature extraction, and stroke line rendering. Previous research on this topic has also struggled to overcome specific performance bottlenecks, which have limited use of this technology in real-time applications. Specifically, many stylized rendering techniques have difficulty operating on large-scale scenes, such as open-world terrain environments. In this paper, we describe various novel rendering techniques for mimicking hand-drawn art styles in a large-scale 3D environment, including modifications to existing methods for stroke rendering and hatch-line texturing. Our system focuses on providing various complex styles while maintaining real-time performance, to maximize user-interactability. Our results demonstrate improved performance over existing real-time methods, and offer a few unique style options for users, though the system still suffers from some visual inconsistencies.
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Booth, James. "The construction and application of large scale 3D facial models." Thesis, Imperial College London, 2017. http://hdl.handle.net/10044/1/62330.

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3D Morphable Models (3DMMs) are powerful statistical models of the 3D shape and texture of the human face, and algorithms based around them are presently state of the art for recovering the 3D geometry and appearance of a face from an image. Even so, the applications of such techniques are gated by a number of factors. Firstly, existing techniques for constructing 3DMMs require manual intervention, limiting the amount of training data that can be used. As 3DMM algorithms can only recover solutions present in the span of the statistical model used, this places a fundamental limit on reconstruction quality to the confines of face models trained from smaller cohorts of data. Secondly, existing approaches for 3D reconstruction from images using 3DMMs are either fragile to real-world "in-the-wild" image effects, or limited in their ability to recover person-specific detail. Finally, there is limited work on the recovery of 3D geometry from "in-the-wild" video sequences of an individual, a very common modality of data in 2017. This thesis takes steps forwards in all three of these domains. A novel pipeline for 3DMM construction is presented that is completely automated, allowing for the construction of large scale 3D Morphable Models for the first time. By using this approach on a new dataset of 10,000 facial scans, the Large Scale Facial Model (LSFM) is introduced, a new 3DMM which is shown to have far more representative power than previous facial models. It is demonstrated that this increased power translates into better performance in 3DMM applications, and a study is performed into the effects of demographic traits such as age, gender and ethnicity on 3D facial appearance. A new approach for fitting 3DMMs to images is developed which is capable of recovering shape detail without sacrificing robustness to "in-the-wild" effects. To achieve this, it is demonstrated that an "in-the-wild" texture model for a 3DMM can be learnt from a distribution of real world images. This new "in-the-wild" 3DMM benefits from a simple but effective cost function that can be reliably optimised even in the case of challenging facial images. Finally, videos of people are given specific treatment for the "in-the-wild" 3DMM, leading to an optimal solution for 3D face tracking in this common data modality.
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Wang, Chen. "Large-scale 3D environmental modelling and visualisation for flood hazard warning." Thesis, University of Bradford, 2009. http://hdl.handle.net/10454/3350.

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3D environment reconstruction has received great interest in recent years in areas such as city planning, virtual tourism and flood hazard warning. With the rapid development of computer technologies, it has become possible and necessary to develop new methodologies and techniques for real time simulation for virtual environments applications. This thesis proposes a novel dynamic simulation scheme for flood hazard warning. The work consists of three main parts: digital terrain modelling; 3D environmental reconstruction and system development; flood simulation models. The digital terrain model is constructed using real world measurement data of GIS, in terms of digital elevation data and satellite image data. An NTSP algorithm is proposed for very large data assessing, terrain modelling and visualisation. A pyramidal data arrangement structure is used for dealing with the requirements of terrain details with different resolutions. The 3D environmental reconstruction system is made up of environmental image segmentation for object identification, a new shape match method and an intelligent reconstruction system. The active contours-based multi-resolution vector-valued framework and the multi-seed region growing method are both used for extracting necessary objects from images. The shape match method is used with a template in the spatial domain for a 3D detailed small scale urban environment reconstruction. The intelligent reconstruction system is designed to recreate the whole model based on specific features of objects for large scale environment reconstruction. This study then proposes a new flood simulation scheme which is an important application of the 3D environmental reconstruction system. Two new flooding models have been developed. The first one is flood spreading model which is useful for large scale flood simulation. It consists of flooding image spatial segmentation, a water level calculation process, a standard gradient descent method for energy minimization, a flood region search and a merge process. The finite volume hydrodynamic model is built from shallow water equations which is useful for urban area flood simulation. The proposed 3D urban environment reconstruction system was tested on our simulation platform. The experiment results indicate that this method is capable of dealing with complicated and high resolution region reconstruction which is useful for many applications. When testing the 3D flood simulation system, the simulation results are very close to the real flood situation, and this method has faster speed and greater accuracy of simulating the inundation area in comparison to the conventional flood simulation models
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Books on the topic "Large scale 3D printing"

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Koch, Reinhard, and Luc Van Gool, eds. 3D Structure from Multiple Images of Large-Scale Environments. Berlin, Heidelberg: Springer Berlin Heidelberg, 1998. http://dx.doi.org/10.1007/3-540-49437-5.

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Mavriplis, Dimitri. Large-scale parallel unstructured mesh computations for 3D high-lift analysis. Hampton, VA: Institute for Computer Applications in Science and Engineering, NASA Langley Research Center, 1999.

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Jaroslav, Králíček, and Zachoval Jaromír, eds. Resists in microlithography and printing. 2nd ed. Amsterdam: Elsevier, 1993.

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Reinhard, Koch, Gool Luc van, and European Conference on Computer Vision (5th : 1998 : Freiburg im Breisgau, Germany), eds. 3D structure from multiple images of large-scale environments: European workshop, SMILE '98, Freiburg, Germany, June 6-7, 1998 : proceedings. Berlin: Springer, 1998.

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European Workshop on 3D Structure from Multiple Images of Large-Scale Environments (2nd 2000 Dublin, Ireland). 3D structure from images - SMILE 2000: Second European Workshop on 3D Structure from Multiple Images of Large-Scale Environments, Dublin, Irleand [i.e. Ireland], July 1-2, 2000 : revised papers. Berlin: Springer, 2001.

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Bashkatov, Alexander. Modeling in OpenSCAD: examples. ru: INFRA-M Academic Publishing LLC., 2019. http://dx.doi.org/10.12737/959073.

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The tutorial is an introductory course to the study of the basics of geometric modeling for 3D printing using the programming language OpenSCAD and is built on the basis of descriptions of instructions for creating primitives, determining their properties, carrying out transformations and other service operations. It contains a large number of examples with detailed comments and description of the performed actions, which allows you to get basic skills in creating three-dimensional and flat models, exporting and importing graphical data. Meets the requirements of the Federal state educational standards of higher education of the last generation. It can be useful for computer science teachers, students, students and anyone who is interested in three-dimensional modeling and preparation of products for 3D printing.
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Large-scale 3D data integration: Challenges and opportunities. Boca Raton, FL: CRC/Taylor & Francis, 2005.

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Siyka, Zlatanova, and Prosperi David, eds. Large-scale 3D data integration: Challenges and opportunities. Boca Raton: CRC/Taylor & Francis, 2006.

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Zlatanova, Sisi, and David Prosperi. Large-Scale 3D Data Integration: Challenges and Opportunities. Taylor & Francis Group, 2005.

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Zlatanova, Siyka, and David Prosperi. Large-Scale 3D Data Integration: Challenges and Opportunities. Taylor & Francis Group, 2010.

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Book chapters on the topic "Large scale 3D printing"

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Prasittisopin, Lapyote, Kittisak Pongpaisanseree, Patiphat Jiramarootapong, and Chalermwut Snguanyat. "Thermal and Sound Insulation of Large-Scale 3D Extrusion Printing Wall Panel." In RILEM Bookseries, 1174–82. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-49916-7_111.

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Mohamed, H., D. W. Bao, and R. Snooks. "Super Composite: Carbon Fibre Infused 3D Printed Tectonics." In Proceedings of the 2020 DigitalFUTURES, 297–308. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-33-4400-6_28.

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AbstractThis research posits an innovative process of embedding carbon fibre as the primary structure within large-scale polymer 3D printed intricate architectural forms. The design and technical implications of this research are explored and demonstrated through two proto-architectural projects, Cloud Affects and Unclear Cloud, developed by the RMIT Architecture Snooks Research Lab. These projects are designed through a tectonic approach that we describe as a super composite – an approach that creates a compression of tectonics through algorithmic self-organisation and advanced manufacturing. Framed within a critical view of the lineage of polymer 3D printing and high tech fibres in the field of architectural design, the research outlines the limitations of existing robotic processes employed in contemporary carbon fibre fabrication. In response, the paper proposes an approach we describe as Infused Fibre Reinforced Plastic (IFRP) as a novel fabrication method for intricate geometries. This method involves 3D printing of sacrificial formwork conduits within the skin of complex architectural forms that are infused with continuous carbon fibre structural elements. Through detailed observation and critical review of Cloud Affects and Unclear Cloud (Fig. 2), the paper assesses innovations and challenges of this research in areas including printing, detailing, structural analysis and FEA modelling. The paper notes how these techniques have been refined through the iterative design of the two projects, including the development of fibre distribution mapping to optimise the structural performance.
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Chicoma, Max Uriarte, Diego Serrano Escobar, and Leonardo Vinces. "Large-Scale FDM 3D Printing in 6 Degrees of Freedom on One ARM KUKA KR 60." In Proceedings of the 7th Brazilian Technology Symposium (BTSym’21), 545–53. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-08545-1_53.

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Wei, Yimeng, Areti Markopoulou, Yuanshuang Zhu, Eduardo Chamorro Martin, and Nikol Kirova. "Additive Manufacture of Cellulose Based Bio-Material on Architectural Scale." In Proceedings of the 2021 DigitalFUTURES, 286–304. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-16-5983-6_27.

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AbstractThere are severe environmental and ecological issues once we evaluate the architecture industry with LCA (Life Cycle Assessment), such as emission of CO2 caused by necessary high temperature for producing cement and significant amounts of Construction Demolition Waste (CDW) in deteriorated and obsolete buildings. One of the ways to solve these problems is Bio-Material. CELLULOSE and CHITON is the 1st and 2nd abundant substance in nature (Duro-Royo, J.: Aguahoja_Programmable Water-based Biocomposites for Digital Design and Fabrication across Scales. MIT, pp. 1–3 (2019)), which means significantly potential for architectural dimension production. Meanwhile, renewability and biodegradability make it more conducive to the current problem of construction pollution. The purpose of this study is to explore Cellulose Based Biomaterial and bring it into architectural scale additive manufacture that engages with performance in the material development, with respect to time of solidification and control of shrinkage, as well as offering mechanical strength. At present, the experiments have proved the possibility of developing a cellulose-chitosan- based composite into 3D-Printing Construction Material (Sanandiya, N.D., Vijay, Y., Dimopoulou, M., Dritsas, S., Fernandez, J.G.: Large-scale additive manufacturing with bioinspired cellulosic materials. Sci. Rep. 8(1), 1–5 (2018)). Moreover, The research shows that the characteristics (Such as waterproof, bending, compression, tensile, transparency) of the composite can be enhanced by different additives (such as xanthan gum, paper fiber, flour), which means it can be customized into various architectural components based on Performance Directional Optimization. This solution has a positive effect on environmental impact reduction and is of great significance in putting the architectural construction industry into a more environment-friendly and smart state.
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Horvath, Joan. "Large Prints and Post-Processing." In Mastering 3D Printing, 129–35. Berkeley, CA: Apress, 2014. http://dx.doi.org/10.1007/978-1-4842-0025-4_10.

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da Silva, Wilson Ricardo Leal, Martin Kaasgaard, and Thomas J. Andersen. "Sustainable 3D Concrete Printing with Large Aggregates." In RILEM Bookseries, 71–77. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-06116-5_11.

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Chen, Chen, Lei Wang, Xiaochun Wang, Taotao Xiong, and Guangxue Chen. "Printing Time Optimization of Large-Size Powder-Based 3D Printing." In Advances in Graphic Communication, Printing and Packaging Technology and Materials, 346–51. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-16-0503-1_51.

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Louis, A. K., and R. M. Lewitt. "Numerical Backprojection in the Inverse 3D Radon Transform." In Large Scale Scientific Computing, 235–44. Boston, MA: Birkhäuser Boston, 1987. http://dx.doi.org/10.1007/978-1-4684-6754-3_14.

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Bazhlekov, Ivan B., Frans N. de van Vosse, and Han E. H. Meijer. "Boundary Integral Method for 3D Simulation of Foam Dynamics." In Large-Scale Scientific Computing, 401–8. Berlin, Heidelberg: Springer Berlin Heidelberg, 2001. http://dx.doi.org/10.1007/3-540-45346-6_42.

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Avvakumov, A. V., P. N. Vabishchevich, A. O. Vasilev, and V. F. Strizhov. "Solution of the 3D Neutron Diffusion Benchmark by FEM." In Large-Scale Scientific Computing, 435–42. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-73441-5_47.

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Conference papers on the topic "Large scale 3D printing"

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Baldeck, Patrice L. "Large-scale 3D printing of biomaterials (Conference Presentation)." In Nanobiosystems: Processing, Characterization, and Applications IX, edited by Norihisa Kobayashi, Fahima Ouchen, and Ileana Rau. SPIE, 2016. http://dx.doi.org/10.1117/12.2240309.

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Taseva, Yoana, Nik Eftekhar, Hyunchul Kwon, Matthias Leschok, and Benjamin Dillenburger. "Large-Scale 3D Printing for Functionally-Graded Facade." In CAADRIA 2020: RE:Anthropocene. CAADRIA, 2020. http://dx.doi.org/10.52842/conf.caadria.2020.1.183.

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Sustarevas, Julius, Dimitrios Kanoulas, and Simon Julier. "Autonomous Mobile 3D Printing of Large-Scale Trajectories." In 2022 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS). IEEE, 2022. http://dx.doi.org/10.1109/iros47612.2022.9982274.

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Tiryaki, Mehmet Efe, Xu Zhang, and Quang-Cuong Pham. "Printing-while-moving: a new paradigm for large-scale robotic 3D Printing." In 2019 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS). IEEE, 2019. http://dx.doi.org/10.1109/iros40897.2019.8967524.

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Ali, Md Hazrat, Sanjar Trubayev, and Essam Shehab. "3D printed large-scale insole and its printing challenges." In 8TH BRUNEI INTERNATIONAL CONFERENCE ON ENGINEERING AND TECHNOLOGY 2021. AIP Publishing, 2023. http://dx.doi.org/10.1063/5.0110272.

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Teizer, Jochen, Alexander Blickle, Tobias King, Olaf Leitzbach, and Daniel Guenther. "Large Scale 3D Printing of Complex Geometric Shapes in Construction." In 33th International Symposium on Automation and Robotics in Construction. International Association for Automation and Robotics in Construction (IAARC), 2016. http://dx.doi.org/10.22260/isarc2016/0114.

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Klemmt, Christoph, Mania Aghaei Meibodi, Gregory Beaucage, and Wes Mcgee. "Large-scale Robotic 3D Printing of Plant Fibre and Bioplastic Composites." In eCAADe 2022: Co-creating the Future - Inclusion in and through Design. eCAADe, 2022. http://dx.doi.org/10.52842/conf.ecaade.2022.1.009.

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Silver, Kevin, Johan Potgieter, Khalid Arif, and Richard Archer. "Opportunities and challenges for large scale 3D printing of complex parts." In 2017 24th International Conference on Mechatronics and Machine Vision in Practice (M2VIP). IEEE, 2017. http://dx.doi.org/10.1109/m2vip.2017.8211515.

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Harris, Muhammad, Johan Potgieter, Khalid Arif, and Richard Archer. "Large scale 3D printing: Feasibility of novel extrusion based process and requisite materials." In 2017 24th International Conference on Mechatronics and Machine Vision in Practice (M2VIP). IEEE, 2017. http://dx.doi.org/10.1109/m2vip.2017.8211519.

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Mazhar, Hammad. "3D Printing Complex Structures Using Modeling and Simulation." In ASME 2015 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/detc2015-47916.

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This paper describes an open source parallel simulation framework capable of simulating large-scale granular and multi-body dynamics problems. This framework, called Chrono::Parallel, builds upon the modeling capabilities of Chrono::Engine, another open source simulation package, and leverages parallel data structures to enable scalable simulation of large problems. Chrono::Parallel is somewhat unique in that it was designed from the ground up to leverage parallel data structures and algorithms so that it scales across a wide range of computer architectures and yet has a rich modeling capability for simulating many different types of problems. The modeling capabilities of Chrono::Parallel will be demonstrated in the context of additive manufacturing and 3D printing by modeling the Selective Layer Sintering layering process and simulating large complex interlocking structures which require compression and folding to fit into a 3D printer’s build volume.
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Reports on the topic "Large scale 3D printing"

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Vavrin, John L., Ghassan K. Al-Chaar, Eric L. Kreiger, Michael P. Case, Brandy N. Diggs, Richard J. Liesen, Justine Yu, et al. Automated Construction of Expeditionary Structures (ACES) : Energy Modeling. Engineer Research and Development Center (U.S.), February 2021. http://dx.doi.org/10.21079/11681/39641.

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The need to conduct complex operations over time results in U.S. forces remaining in deployed locations for long periods. In such cases, more sustainable facilities are required to better accommodate and protect forward deployed forces. Current efforts to develop safer, more sustainable operating facilities for contingency bases involve construction activities that redesign the types and characteris-tics of the structures constructed, reduce the resources required to build, and reduce resources needed to operate and maintain the com-pleted facilities. The Automated Construction of Expeditionary Structures (ACES) project was undertaken to develop the capability to “print” custom-designed expeditionary structures on demand, in the field, using locally available materials with the minimum number of personnel. This work investigated large-scale automated “additive construction” (i.e., 3D printing with concrete) for construction applications. This document, which documents ACES energy and modeling, is one of four technical reports, each of which details a major area of the ACES research project, its research processes, and associated results, including: System Requirements, Construction, and Performance; Energy and Modeling; Materials and Testing; Architectural and Structural Analysis.
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Diggs, Brandy N., Richard J. Liesen, Michael P. Case, Sameer Hamoush, and Ahmed C. Megri. Automated Construction of Expeditionary Structures (ACES) : Energy Modeling. Engineer Research and Development Center (U.S.), February 2021. http://dx.doi.org/10.21079/11681/39759.

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The need to conduct complex operations over time results in U.S. forces remaining in deployed locations for long periods. In such cases, more sustainable facilities are required to better accommodate and protect forward deployed forces. Current efforts to develop safer, more sustainable operating facilities for contingency bases involve construction activities that redesign the types and characteris-tics of the structures constructed, reduce the resources required to build, and reduce resources needed to operate and maintain the com-pleted facilities. The Automated Construction of Expeditionary Structures (ACES) project was undertaken to develop the capability to “print” custom-designed expeditionary structures on demand, in the field, using locally available materials with the minimum number of personnel. This work investigated large-scale automated “additive construction” (i.e., 3D printing with concrete) for construction applications. This document, which documents ACES energy and modeling, is one of four technical reports, each of which details a major area of the ACES research project, its research processes, and associated results, including: System Requirements, Construction, and Performance; Energy and Modeling; Materials and Testing; Architectural and Structural Analysis.
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Al-Chaar, Ghassan K., Peter B. Stynoski, Todd S. Rushing, Lynette A. Barna, Jedadiah F. Burroughs, John L. Vavrin, and Michael P. Case. Automated Construction of Expeditionary Structures (ACES) : Materials and Testing. Engineer Research and Development Center (U.S.), February 2021. http://dx.doi.org/10.21079/11681/39721.

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Complex military operations often result in U.S. forces remaining at deployed locations for long periods. In such cases, more sustaina-ble facilities are required to better accommodate and protect forward-deployed forces. Current efforts to develop safer, more sustaina-ble operating facilities for contingency bases involve construction activities that require a redesign of the types and characteristics of the structures constructed, that reduce the resources required to build, and that decrease the resources needed to operate and maintain the completed facilities. The Automated Construction of Expeditionary Structures (ACES) project was undertaken to develop the capa-bility to “print” custom-designed expeditionary structures on demand, in the field, using locally available materials with the minimum number of personnel. This work investigated large-scale automated “additive construction” (i.e., 3D printing with concrete) for con-struction applications. This report, which documents ACES materials and testing, is one of four technical reports, each of which details a major area of the ACES research project, its research processes, and its associated results. There major areas include System Require-ments, Construction, and Performance; Energy and Modeling; Materials and Testing; Architectural and Structural Analysis.
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Ng, Melissa R., Bryan Moran, Logan Bekker, and Nikola Dudukovic. Large Area Projection Microstereolithography: Characterization and Optimization of 3D Printing Parameters. Office of Scientific and Technical Information (OSTI), August 2016. http://dx.doi.org/10.2172/1305839.

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Neumann, Ulrich, and Suya You. Rapid Creation of Large-Scale 3D Models. Fort Belvoir, VA: Defense Technical Information Center, January 2013. http://dx.doi.org/10.21236/ada586594.

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Wang, Lin-Wang, Zhengji Zhao, and Juan Meza. Linear Scaling 3D Fragment Method for Large-Scale ElectronicStructure Calculations. Office of Scientific and Technical Information (OSTI), October 2006. http://dx.doi.org/10.2172/918121.

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Zhao, Zhengji, Juan Meza, Byounghak Lee, Hongzhang Shan, Erich Strohmaier, David Bailey, and Lin-Wang Wang. The linearly scaling 3D fragment method for large scale electronic structure calculations. Office of Scientific and Technical Information (OSTI), July 2009. http://dx.doi.org/10.2172/979800.

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Zhao, Zhengji, Juan Meza, Byounghak Lee, Hongzhang Shan, Erich Strohmaier, David Bailey, and Lin-Wang Wang. The Linearly Scaling 3D Fragment Method for Large Scale Electronic Structure Calculations. Office of Scientific and Technical Information (OSTI), June 2009. http://dx.doi.org/10.2172/964376.

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Wagoner, J., and S. Myers. Constructing a large-scale 3D Geologic Model for Analysis of the Non-Proliferation Experiment. Office of Scientific and Technical Information (OSTI), April 2008. http://dx.doi.org/10.2172/928556.

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Walker, D. N., W. Amatucci, R. Lanham, G. Gatling, and T. McCulloch. A Versatile Vacuum- and Plasma-Compatible 3D Probe Positioning System for Large Scale Vacuum Chambers. Fort Belvoir, VA: Defense Technical Information Center, October 2000. http://dx.doi.org/10.21236/ada384547.

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