Relevant bibliographies by topics / 3D print materiál

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Book chapters
  4. Conference papers
  5. Reports

Academic literature on the topic '3D print materiál'

Author: Grafiati
Published: 28 June 2021
Last updated: 1 February 2022

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Journal articles on the topic "3D print materiál"

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Kiński, Wojciech, and Paweł Pietkiewicz. "The concept of the material supply system in 3D printer using a wear FDM material." Mechanik 91, no. 7 (July 9, 2018): 543–45. http://dx.doi.org/10.17814/mechanik.2018.7.78.

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Presented is a conceptual model of an extruder that prints from waste after the printing process as well as from unsuccessful models. Particular attention was paid to the construction of the print head with an extruder adapted to previously fragmented plastic parts. The purpose of this solution is to reduce waste from the printing process.
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Czerwiński, Maciej, and Mateusz Pasternak. "Use of 3D printing technology for planar antenna constructions." Bulletin of the Military University of Technology 69, no. 1 (March 31, 2020): 57–65. http://dx.doi.org/10.5604/01.3001.0014.2799.

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The applicability of 3D print technologies for manufacturing of planar antenna substrates having tailored permittivity was considered in the work. The permittivity is known as a parameter that has strong influence on the planar antennae key parameters. The application of 3D print gives the possibility of changing this parameter in the range between its value for air up to the value for homogeneous solid material. The change can be achieved through the change of the filament material and the way of 3D print pattern. The preliminary results of simulations and measurements show that the idea of printing of planar antennae substrate may be interesting alternative from a design engineering point of view. Keywords: electronic materials, planar antennae substrates, 3D print applications
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Huber, Tim, Hossein Najaf Zadeh, Sean Feast, Thea Roughan, and Conan Fee. "3D Printing of Gelled and Cross-Linked Cellulose Solutions; an Exploration of Printing Parameters and Gel Behaviour." Bioengineering 7, no. 2 (March 27, 2020): 30. http://dx.doi.org/10.3390/bioengineering7020030.

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In recent years, 3D printing has enabled the fabrication of complex designs, with low-cost customization and an ever-increasing range of materials. Yet, these abilities have also created an enormous challenge in optimizing a large number of process parameters, especially in the 3D printing of swellable, non-toxic, biocompatible and biodegradable materials, so-called bio-ink materials. In this work, a cellulose gel, made out of aqueous solutions of cellulose, sodium hydroxide and urea, was used to demonstrate the formation of a shear thinning bio-ink material necessary for an extrusion-based 3D printing. After analysing the shear thinning behaviour of the cellulose gel by rheometry a Design of Experiments (DoE) was applied to optimize the 3D bioprinter settings for printing the cellulose gel. The optimum print settings were then used to print a human ear shape, without a need for support material. The results clearly indicate that the found settings allow the printing of more complex parts with high-fidelity. This confirms the capability of the applied method to 3D print a newly developed bio-ink material.
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Wawrek, I. "Building materials for 3D print." IOP Conference Series: Materials Science and Engineering 867 (October 9, 2020): 012047. http://dx.doi.org/10.1088/1757-899x/867/1/012047.

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Geiger, R., S. Rommel, J. Burkhardt, and T. Prof Bauernhansl. "Additiver Hybrid-Leichtbau – Highlight 3D print*/Additive Hybrid Lightweight Construction - Highlight 3D print." wt Werkstattstechnik online 106, no. 03 (2016): 169–74. http://dx.doi.org/10.37544/1436-4980-2016-03-73.

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Additive Fertigungsverfahren bieten durch ihren schichtweisen Aufbau einzigartige Gestaltungsfreiheiten. Hieraus leitet sich ein enormes Potential für den strukturellen Leichtbau ab. Bionische Leichtbaustrukturen, integrierte Funktionalitäten sowie topologieoptimierte Bauteile lassen sich direkt produzieren. Neben dem strukturellen Leichtbau lassen sich durch die Verwendung hochfester Werkstoffe oder von Werkstoffen mit geringer Dichte ebenfalls Leichtbauprodukte generieren. Ein Beispiel für werkstofflichen Leichtbau sind Faserverbundstrukturen, welche geringe Materialdichte mit hoher Festigkeit kombinieren. Durch Bündelung der Vorteile additiver Fertigungsverfahren mit Halbzeugen aus Hochleistungswerkstoffen – beispielsweise kohlenstofffaserverstärkten Kunststoffen – werden noch leichtere Produkte möglich. Besonders die Funktionsintegration und die Designfreiheit additiver Verfahren schaffen hier völlig neue Gestaltungsmöglichkeiten und einen Individualisierungsgrad, der im Leichtbau bisher unbekannt ist. Anhand eines Produktbeispiels wird aufgezeigt, welche Potentiale additiver Hybrid-Leichtbau eröffnet. Ausgehend von einer topologieoptimierten Form erfolgt die Ableitung eines Bauteils. Dies wird im Lasersinterverfahren (SLS) gefertigt und in Kombination mit Kohlenstofffaserverbund (CFK)-Rohren sowie weiteren additiv gefertigten Bauteilen zum Produkt „Hocker“ zusammengefügt. Parallel wird das Verbundsystem digital abgebildet und simulativ überprüft.   Additive manufacturing technology offers unique design flexibility due to its layer-based construction approach. This provides new potential for lightweight construction. Bionic lightweight structures, integrated functionality, and topology-optimized structures can now be manufactured. Another method to generate lightweight design is the use of high-strength materials with low density. For example, fiber reinforced materials which combine high-tensile fibers with low material density. The combination of these two unique benefits leads towards ultra-light products. The degree of individualization through additive manufacturing represents a new tool in the field of lightweight design, providing new construction possibilities. This paper presents the potential of hybrid lightweight design with the help of a specific product. An ergonomic lightweight seat starts with a topology optimized 3D form. The construction combines additive manufactured parts with carbon fiber reinforced plastic (CFRP) pre-products. Additionally, the interaction between the constituent parts has been simulated.
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Pristiansyah, Pristiansyah, Hasdiansah Hasdiansah, and Sugiyarto Sugiyarto. "Optimasi Parameter Proses 3D Printing FDM Terhadap Akurasi Dimensi Menggunakan Filament Eflex." Manutech : Jurnal Teknologi Manufaktur 11, no. 01 (July 31, 2019): 33–40. http://dx.doi.org/10.33504/manutech.v11i01.98.

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Fused Deposition Modeling (FDM) is a 3D Printing technique used to print products using filaments as material. The printed product has ideal geometric characteristics if it has meticulous size and perfect shape. One type of material that can be processed using 3D Printing FDM is flexible material. Research in terms of dimensional accuracy has been carried out on PLA and ABS materials. While research using flexible materials is still rarely done. From these problems, we need a study to get the process parameter settings on a 3D Printer machine that is optimal in obtaining dimensional accuracy using flexible materials. The research was carried out using the Prusa model DIY (Do It Yourself) 3D machine with FDM technology. The material used is Eflex type flexible filament with a diameter of 1.75 mm. The process parameters used in this study are flowrate, layer thickness, temperature nozzle, speed printing, overlap, and fan speed. Cuboid test specimens measuring 20 mm × 20 mm × 20 mm. Process parameter optimization using the Taguchi L27 Orthogonal Array method for dimensional accuracy testing. Optimal process parameter values for obtaining X dimension accuracy are 110% flowrate, 0.10 mm layer thickness, 210 °C nozzle temperature, 40 mm/s print speed, 75% overlap, and 50% fan speed. Y dimension is 120% flowrate, layer thickness 0.20 mm, nozzle temperature 230 °C, print speed 30 mm/s, overlap 75%, and fan speed 100%. As well as the Z dimension is 120% flowrate, layer thickness 0.30 mm, nozzle temperature 210 °C, print speed 30 mm/s, overlap 50%, and fan speed 100%.
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Milde, Ján, František Jurina, Jozef Peterka, Patrik Dobrovszký, Jakub Hrbál, and Jozef Martinovič. "Influence of Part Orientation on the Surface Roughness in the Process of Fused Deposition Modeling." Key Engineering Materials 896 (August 10, 2021): 29–37. http://dx.doi.org/10.4028/www.scientific.net/kem.896.29.

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The article focused on the influence of part orientation on the surface roughness of cuboid parts during the process of fabricating by FDM technology. The components, in this case, is simple cuboid part with the dimensions 15 mm x 15mm x 30 mm. A geometrical model is defined that considers the shape of the material filaments after deposition, to define a theoretical roughness profile, for a certain print orientation angle. Five different print orientations in the X-axis of the cuboid part were set: 0°, 30°, 45°, 60°, and 90°. According to previous research in the field of FDM technology by the author, the internal structure (infill) was set at the value of 70%. The method of 3D printing was the Fused Deposition Modeling (FDM) and the material used in this research was thermoplastic ABS (Acrylonitrile butadiene styrene). For each setting, there were five specimens (twenty five prints in total). Prints were fabricated on a Zortrax M200 3D printer. After the 3D printing, the surface “A” was investigated by portable surface roughness tester Mitutoyo SJ-210. Surface roughness in the article is shown in the form of graphs (Fig.7). Results show increase in part roughness with increasing degree of part orientation. When the direction of applied layers on the measured surface was horizontal, significant improvement in surface roughness was observed. Findings in this paper can be taken into consideration when designing parts, as they can contribute in achieving lower surface roughness values.
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Deneault, James R., Jorge Chang, Jay Myung, Daylond Hooper, Andrew Armstrong, Mark Pitt, and Benji Maruyama. "Toward autonomous additive manufacturing: Bayesian optimization on a 3D printer." MRS Bulletin 46, no. 7 (April 19, 2021): 566–75. http://dx.doi.org/10.1557/s43577-021-00051-1.

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Abstract Materials exploration and development for three-dimensional (3D) printing technologies is slow and labor-intensive. Each 3D printing material developed requires unique print parameters be learned for successful part fabrication, and sub-optimal settings often result in defects or fabrication failure. To address this, we developed the Additive Manufacturing Autonomous Research System (AM ARES). As a preliminary test, we tasked AM ARES with autonomously modulating four print parameters to direct-write single-layer print features that matched target specifications. AM ARES employed automated image analysis as closed-loop feedback to an online Bayesian optimizer and learned to print target features in fewer than 100 experiments. In due course, this first-of-its-kind research robot will be tasked with autonomous multi-dimensional optimization of print parameters to accelerate materials discovery and development in the field of AM. The combining of open-source ARES OS software with low-cost hardware makes autonomous AM highly accessible, promoting mainstream adoption and rapid technological advancement. Impact statement The discovery and development of new materials and processes for three-dimensional (3D) printing is hindered by slow and labor-intensive trial-and-error optimization processes. Coupled with a pervasive lack of feedback mechanisms in 3D printers, this has inhibited the advancement and adoption of additive manufacturing (AM) technologies as a mainstream manufacturing approach. To accelerate new materials development and streamline the print optimization process for AM, we have developed a low-cost and accessible research robot that employs online machine learning planners, together with our ARES OS software, which we will release to the community as open-source, to rapidly and effectively optimize the complex, high-dimensional parameter sets associated with 3D printing. In preliminary trials, the first-of-its-kind research robot, the Additive Manufacturing Autonomous Research System (AM ARES), learned to print single-layer material extrusion specimens that closely matched targeted feature specifications in under 100 iterations. Delegating repetitive and high-dimensional cognitive labor to research robots such as AM ARES frees researchers to focus on more creative, insightful, and fundamental scientific work and reduces the cost and time required to develop new AM materials and processes. The teaming of human and robot researchers begets a synergy that will exponentially propel technological progress in AM.
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Brookes, Ken. "3D Print Show." Metal Powder Report 69, no. 1 (January 2014): 33–35. http://dx.doi.org/10.1016/s0026-0657(14)70030-x.

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Ai, Ju Mei, and Ping Du. "Discussion on 3D Print Model and Technology." Applied Mechanics and Materials 543-547 (March 2014): 130–33. http://dx.doi.org/10.4028/www.scientific.net/amm.543-547.130.

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3D printing is a new technology of computer science, is an important topic in the field of academic discussion, is still in the primary stage of 3D printing technology in China, the application is not widespread, so scholars have discussed a lot of work to do. This paper introduces the 3D printing technology international and domestic development situation, the working principle, the printing process and technology, proposed the application bottleneck 3D printing technology is to manufacture, printing materials therefore, electroactive materials developed for 3D printing will become an important direction of future research of 3D print.
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Dissertations / Theses on the topic "3D print materiál"

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Kašpárková, Kristýna. "3D tisk kompozitních materiálů." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2020. http://www.nusl.cz/ntk/nusl-417454.

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The submitted thesis deals with a study of composite materials and processing them using 3D printing technology. The experimental part of this thesis is focused on the production of test samples with the use of additive technology Fused Deposition Modeling and Continuous Filament Fabrication. The composite samples made of common onyx material, individually reinforced with continuous carbon fiber filaments, kevlar, or fiberglass, were made with Marforged Mark Two 3D printer. The other samples made of PETG PM and PETG CFjet materials were made with Original Prusa i3 MK2S 3D printer. For technological evaluation, a tensile test was performed on samples, following the norm EN ISO 527-2:2012. Based on results obtained from tensile testing, the properties of materials strength and usability are verified and compared. In this work, the production process is proposed, and technical-economic evaluation is made. In conclusion, achieved results and overall benefits of this work are summarised.
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Šafl, Pavel. "Použití technologie 3D tisku pro návrh výroby náhradních dílů." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2021. http://www.nusl.cz/ntk/nusl-442437.

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This seminar thesis deals with the issue of 3D printing in companies. The aim was to describe additive manufacturing and 3D printing technologies. Moreover, to select the most common materials which are used and describe them. It was also necessary to perform a study of mechanical stresses and prepare a detailed description of the mechanical properties of materials. From these data, methods of use in the automotive industry were described. The most important part was to introduce case studies and create a description of which 3D printing technologies have the fastest return on investment.
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Černý, Martin. "Stanovení mechanických vlastností materiálů používaných pro 3D tisk." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2019. http://www.nusl.cz/ntk/nusl-402542.

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The thesis deals with the determination of mechanical properties of materials used for 3D printing (ABS, nylon and PLA). Standardized samples produced using a 3D printer using the Fused Deposition Modeling method were subsequently used for mechanical testing. The work is also extended to determine the mechanical properties of samples made by Soft Tooling. For the production of Soft Tooling samples, polyurethane resins SG 2000 and SG 145 were used. Individual materials were analyzed by mechanical tests (tensile test and hardness test). Surface integrity parameters have also been determined for 3D-printed materials. Parameters were selected from the individual tests (tensile strength, modulus of elasticity) ductility and hardness), which were subsequently statistically processed. The work is concluded by evaluating the results obtained, which were compared with the values given in material sheets.
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Mudrák, Michal. "Analýza mechanických vlastností kompozitních materiálů vytisknutých aditivní technologií 3D tisku." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2021. http://www.nusl.cz/ntk/nusl-444288.

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This thesis deals with the analysis of mechanical properties of composite materials used for 3D printing by Markforged company. The theoretical part is focused on the characterization of composite materials and analysis of mechanical tests. The experimental part deals with the production of test specimens for specific mechanical tests (tensile test, Shore D hardness test and bending test). The test sapples with Onyx base material are individually reinforced with carbon and high-temperature glass fibers (HSHT). There are statistically evaluated selected parameters for individual mechanical tests (tensile strength, elongation, modulus of elasticity, Shore D hardness, bending stress and bending deformation). The thesisis completed by comparing selected parameters of composite materials with overall recommendations for users.
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Sears, Forest (Forest Orion). "3D print quality in the context of PLA color." Thesis, Massachusetts Institute of Technology, 2016. http://hdl.handle.net/1721.1/104320.

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Thesis: S.B., Massachusetts Institute of Technology, Department of Materials Science and Engineering, 2016.
Cataloged from PDF version of thesis.
Includes bibliographical references (page 45).
3D printing is a hot topic in manufacturing and a truly useful tool, but it has limitations. Print quality properties - like raft peelability, dimensional tolerance and surface roughness - are hard to calibrate perfectly. A common material used in fused deposition modeling (FDM) printers is polylactic acid (PLA). One print quality concern is how different colors of PLA print differently under the exact same settings. The inconsistency in print quality by color is bad for designers, students, and engineers who want to rapidly prototype effectively. Analyzing the thermal, chemical and mechanical properties of the different colors of PLA and relating it to the quality of the prints gives the user a chance to calibrate their machine effectively for higher quality prints. The quality of prints are quantified by scoring systems that measure three properties of a print: dimensional tolerance, how easily the raft peels from the print, and the surface roughness. The thermal properties of the different colors of PLA were analyzed using differential scanning calorimetry (DSC) up to 230° C. The integrals of peaks and troughs from the DSC - representing heat absorbed and released by the different colors of PLA - show that each color responds differently to thermal treatment. The mechanical strength of each color was found to be different through uniaxial tensile testing. Yellow and orange filament had high percent crystallinity at -12.1%, while having a high yield stress at 41-45 MPa, and a low yield strain at 6.6%-11% extension. Red and blue filament had low percent crystallinity at ~8.8-10.2%, while having a low yield stress at 33-36 MPa, and a high yield strain at 18%-23% extension. Additionally, Fourier transform infrared spectroscopy (FTIR) analysis determined each PLA color had unique additives. For calibrating printers for reliably high quality prints, crystallinity has a relationship with the amount of material extruded which could factor into qualities like dimensional tolerance and surface finish.
by Forest Sears.
S.B.
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Tipton, Roger B. "Direct Print Additive Manufacturing of Optical Fiber Interconnects." Scholar Commons, 2018. https://scholarcommons.usf.edu/etd/7651.

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High performance communications, sensing and computing systems are growing exponentially as modern life continues to rely more and more on technology. One of the factors that are currently limiting computing and transmission speeds are copper wire interconnects between devices. Optical fiber interconnects would greatly increase the speed of today’s electronic devices. In this study it has been demonstrated that by using a new Direct Print Additive Manufacturing (DPAM) process of Fused Deposition Modeling (FDM) of plastic and micro-dispensing of pastes and inks, we can 3D print single and multi-mode optical fibers in a controlled manner such that compact, 3-dimensional optical interconnects can be printed along non-lineal paths. We are FDM printing the core materials from a plastic PMMA material. We are dispensing a urethane optical adhesive as the core material. These materials are available in many different refractive indices. During numerical simulations of these fibers, we were able to show through manipulation of the refractive indices of the core and cladding that we can also improve the bend performance of our fibers. As a result, they can perform better as an interconnect in tight routings between components as long as the interconnect fiber distances remain less than 1 meter. Fibers have been fabricated with diameters between 77 and 17 µm across an air gap with a surface roughness of less than 450 nm and cladded and tested with transmission rates of about 46%. 12 µm fibers have successfully been fabricated on a cladded surface as a proof of concept to test the small diameter and 3D shaping capability of this process.
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Čáslavský, František. "Zkoušky vybraných vlastností materiálů pro 3D tisk." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2019. http://www.nusl.cz/ntk/nusl-400683.

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This thesis deals with 3D printing, materials used for 3D printing, testing of the materials and learning their real parameters. Goal of the thesis is comparing selected materials, executing series of mechanical test and selecting suitable material for printing high-quality plastic parts for use in automobiles, especially for reproduction of parts that are no longer made for oldtimers and for use in motorsport.
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Carter, Justin B. "Vibration and Aeroelastic Prediction of Multi-Material Structures based on 3D-Printed Viscoelastic Polymers." Miami University / OhioLINK, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=miami1627048967306654.

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Persson, Matilda. "Materializing." Thesis, KTH, Arkitektur, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-231952.

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Scully, Sean W. "Cameos For Modern Times." Kent State University / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=kent1279137863.

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Book chapters on the topic "3D print materiál"

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Wüthrich, Michael, Wilfried J. Elspass, Philip Bos, and Simon Holdener. "Novel 4-Axis 3D Printing Process to Print Overhangs Without Support Material." In Industrializing Additive Manufacturing, 130–45. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-54334-1_10.

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Mao, Gang. "A Study of Bio-Computational Design in Terms of Enhancing Water Absorption by Method of Bionics Within the Architectural Fields." In Proceedings of the 2021 DigitalFUTURES, 102–13. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-16-5983-6_10.

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AbstractThis essay aims to explore an architecture computational design intended to accept and absorb moisture through geometrical and material conditions, and using design strategies, help deliver this moisture upwards through capillary action to areas of cryptogamic growth including mosses and smaller ferns on the surface of architecture. The purpose of this research project is to explore the morphology of general capillary systems based on research into the principle of xylematic structures in trees, thereby creating a range of capillary designs using three types of material: plaster, 3D print plastic, and concrete. In addition, computational studies are used to examine various types of computational designs of organic structures, such as columns, driven by physical and environmental conditions such as sunshine, shade, tides and other biological processes to explore three-dimensional particle-based branching systems that define both structural and water delivery paths.
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Yuan, Jiangping, Jieni Tian, Danyang Yao, and Guangxue Chen. "Color Assessment of Paper-Based Color 3D Prints Using Layer-Specific Color 3D Test Charts." In Advances in Graphic Communication, Printing and Packaging Technology and Materials, 123–31. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-16-0503-1_20.

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Van Der Putten, J., G. De Schutter, and K. Van Tittelboom. "The Effect of Print Parameters on the (Micro)structure of 3D Printed Cementitious Materials." In RILEM Bookseries, 234–44. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-99519-9_22.

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Wang, Yi-Ta, and Yi-Ting Yeh. "Effect of Print Angle on Mechanical Properties of FDM 3D Structures Printed with POM Material." In Lecture Notes in Mechanical Engineering, 157–67. Singapore: Springer Singapore, 2016. http://dx.doi.org/10.1007/978-981-10-1771-1_20.

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Malik, Fasih Munir, Syed Faiz Ali, Burak Bal, and Emin Faruk Kececi. "Determination of Optimum Process Parameter Values in Additive Manufacturing for Impact Resistance." In Additive Manufacturing Technologies From an Optimization Perspective, 221–34. IGI Global, 2019. http://dx.doi.org/10.4018/978-1-5225-9167-2.ch011.

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3D printing as a manufacturing method is gaining more popularity since 3D printing machines are becoming easily accessible. Especially in a prototyping process of a machine, they can be used, and complex parts with high quality surface finish can be manufactured in a timely manner. However, there is a need to study the effects of different manufacturing parameters on the materials properties of the finished parts. Specifically, this chapter explains the effects of six different process parameters on the impact resistance. In particular, print temperature, print speed, infill ratio, infill pattern, layer height, and print orientation parameters were studied, and their effects on impact resistance were measured experimentally. Moreover, the optimum values of the process parameters for impact resistance were found. This chapter provides an important guideline for 3D manufacturing in terms of impact resistance of the printed parts. Furthermore, by using this methodology the effects of different 3D printing process parameters on the other material, properties can be determined.
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Balasubramanian, K. R., V. Senthilkumar, and Divakar Senthilvel. "Introduction to Additive Manufacturing." In Advances in Civil and Industrial Engineering, 1–24. IGI Global, 2020. http://dx.doi.org/10.4018/978-1-7998-4054-1.ch001.

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Additive manufacturing (AM) is also referred to as 3D printing, rapid prototyping, solid freeform fabrication, rapid manufacturing, desktop manufacturing, direct digital manufacturing, layered manufacturing, generative manufacturing, layered manufacturing, solid free-form fabrication, rapid prototype, tool-less model making, etc. It is emerging as an important manufacturing technology. It is the process of building up of layer-by-layer by depositing a material to make a component using the digital 3D model data. The main advantages of AM are mass customization, minimisation of waste, freedom of designing complex structures, and ability to print large structures. AM is broadly applicable to all classes of materials including metals, ceramics, polymers, composites, and biological systems. The AM methods used for producing complex geometrical shapes are classified based either on energy source (laser, electron beam) used or the material feed stock (powder feed, wire feed).
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Łąpieś, Zuzanna, Przemysław Siemiński, Jarosław Mańkowski, Jakub Lipnicki, Łukasz Żrodowski, Piotr Żach, Michał Fotek, and Łukasz Gołębiewski. "The Concept of Applying the Polyjet Matrix Incremental Technology to the Manufacture of Innovative Orthopaedic Corsets – Research and Analysis." In Advances in Transdisciplinary Engineering. IOS Press, 2020. http://dx.doi.org/10.3233/atde200081.

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Paper presents the concept of using digital materials to produce, by 3D printing, personalized orthopaedic corsets. Project assumes that corset created on the basis of a 3D scan and patient’s x-ray, after posture correction in a dedicated program, will guarantee anatomical fit. Using additive manufacturing will allow to print shell and padding in one piece, without perceptible boundaries. Smooth combination of variable stiffness materials will allow precise positioning of the pressure surface with optimal shape. Soft padding protects against abrasions and microholes allow body to breathe. Using transparent and multicolour materials will allow creating an individual style corset. To implement the work, research was performed on materials used in PolyJet technology (new material is created in manufacturing process and has properties depending on proportion of base materials). Nonlinear tensile characteristics were obtained. Various models of hyperelastic materials were tested, parameters were identified and Drucker’s stability criteria were examined. Using FEM, stiffness and strength of structure was tested. Values of stresses in structure and surface forces in body contact areas were determined. Corset closing pressure and corset opening were simulated.
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Fang, Edna Ho Chu, and Sameer Kumar. "The Trends and Challenges of 3D Printing." In Encyclopedia of Information Science and Technology, Fourth Edition, 4382–89. IGI Global, 2018. http://dx.doi.org/10.4018/978-1-5225-2255-3.ch380.

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3D printing is a type of additive manufacturing technology where a 3D object is created by laying down subsequent layers of material at the mm scale. It is also known as rapid prototyping. 3D printing is now applied in various industries such as footwear, jewelry, architecture, engineering and construction, aerospace, dental and medical industries, education, consumer products, automotive and industrial design. Some claim that 3D printing will put an end to traditional manufacturing primarily since 3D printing imposes a tool-less process. Though 3D printing technology is used in weapon manufacturing, it is also being used to improve the lives of mankind. In the future, 3D printing will most probably be used to print human organs. The article discusses the trends and challenges faced by this exciting technology.
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Fang, Edna Ho Chu, and Sameer Kumar. "The Trends and Challenges of 3D Printing." In Advances in Environmental Engineering and Green Technologies, 415–23. IGI Global, 2019. http://dx.doi.org/10.4018/978-1-5225-7359-3.ch028.

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3D printing is a type of additive manufacturing technology where a 3D object is created by laying down subsequent layers of material at the mm scale. It is also known as rapid prototyping. 3D printing is now applied in various industries such as footwear, jewelry, architecture, engineering and construction, aerospace, dental and medical industries, education, consumer products, automotive, and industrial design. Some claim that 3D printing will put an end to traditional manufacturing, primarily since 3D printing imposes a tool-less process. Though 3D printing technology is used in weapon manufacturing, it is also being used to improve the lives of mankind. In the future, 3D printing will most probably be used to print human organs. The chapter discusses the trends and challenges faced by this exciting technology.
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Conference papers on the topic "3D print materiál"

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McGrady, Garrett, and Kevin Walsh. "Dual Extrusion FDM Printer for Flexible and Rigid Polymers." In ASME 2020 15th International Manufacturing Science and Engineering Conference. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/msec2020-8377.

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Abstract Commercially available fused deposition modeling (FDM) printers have yet to bridge the gap between printing soft, flexible materials and printing hard, rigid materials. This work presents a custom printer solution, based on open-source hardware and software, which allows a user to print both flexible and rigid polymer materials. The materials printed include NinjaFlex, SemiFlex, acrylonitrile-butadiene-styrene (ABS), Nylon, and Polycarbonate. In order to print rigid materials, a custom, high-temperature heated bed was designed to act as a print stage. Additionally, high temperature extruders were included in the design to accommodate the printing requirements of both flexible and rigid filaments. Across 25 equally spaced points on the print plate, the maximum temperature difference between any two points on the heated bed was found to be ∼9°C for a target temperature of 170°C. With a uniform temperature profile across the plate, functional prints were achieved in each material. The print quality varied, dependent on material; however, the standard deviation of layer thicknesses and size measurements of the parts were comparable to those produced on a Zortrax M200 printer. After calibration and further process development, the custom printer will be integrated into the NEXUS system — a multiscale additive manufacturing instrument with integrated 3D printing and robotic assembly (NSF Award #1828355).
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Ding, Houzhu, and Robert C. Chang. "Bioprinting of Liquid Hydrogel Precursors in a Support Bath by Analyzing Two Key Features: Cell Distribution and Shape Fidelity." In ASME 2018 13th International Manufacturing Science and Engineering Conference. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/msec2018-6675.

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Microextrusion-based bioprinting within a support bath material is an emerging additive manufacturing technique for fabricating complex three-dimensional (3D) tissue constructs. However, there exists fundamental knowledge gaps in understanding the spatiotemporal mapping of cells within the bioprinted constructs and their shape fidelity when embedded in a support bath material. To address these questions, this paper advances quantitative analyses to systematically determine the spatial distribution for cell-laden filament-based tissue constructs as a function of the bio-ink properties. Also, optimal bio-ink formulations are investigated to fabricate complex 3D structures with superior shape integrity. Specifically, for a 1D filament printed in a support bath, cells suspended in low viscosity liquid hydrogel precursors are found to exhibit a characteristic non-uniform distribution as measured by a degree of separation (Ds) metric. In a 2D square wave pattern print, cells are observed to flow and aggregate downstream at certain positions along the in-plane print direction. In a 3D analysis, owing to the high cell density and gravity effects, a non-uniform cell distribution within a printed cylindrical structure is observed in the build direction. From the structural standpoint, the addition of CaCl2 to the support bath activates the hydrogel cross-linking process during printing, resulting in 3D prints with enhanced structural outcomes. This multidimensional print analysis provides evidence that, under the emerging bioprinting support bath paradigm, the printable parameter space can be extended to low viscosity liquid hydrogel precursor materials that can be systematically characterized and optimized for key process performance outcomes in cell distribution and shape fidelity.
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Gallant, Lucas, Amy Hsiao, and Grant McSorley. "Benchmarking of print properties and microstructures of 316L stainless steel DMLS prints." In HT2021. ASM International, 2021. http://dx.doi.org/10.31399/asm.cp.ht2021p0037.

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Abstract Direct metal laser sintering (DMLS) is an established technology in metal additive manufacturing. This complex manufacturing process yields unique as-built material properties that influence mechanical performance and vary with different machine parameters. Part porosity and residual stresses, which lead to part failures, and grain structure, as it relates to mechanical properties and anisotropy of DMLS parts, require investigation for different print settings. This work presents results for density, residual stress, and microstructural inspections on designed test artifacts for the benchmarking of 3D metal printers. Results from printing artifacts on two separate DMLS printer models with default parameters show highly dense parts for both printers, with relative densities above 99.5%. Characterization of residual stress through cantilevered deflection specimens indicates similar resulting thermal stresses developed in both build processes, with deflection averages of 32.48% and 28.09% for the respective machines. Additionally, properties of the test artifact printed after adjusting default machine parameters for equal energy density are characterized.
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Dei Rossi, Joseph, Ozgur Keles, and Vimal Viswanathan. "Fused Deposition Modeling With Added Vibrations: A Parametric Study on the Accuracy of Printed Parts." In ASME 2019 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/imece2019-11698.

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Abstract Additive manufacturing is a potentially disruptive technology with a rapidly growing market. The recent development of RepRap style 3D printers has made this technology available to the public at a low cost. While these 3D printers are being used for a variety of purposes, many mechanical engineering students use them for prototyping in their projects. The quality of the 3D printed parts has been a concern in such cases. There are many variables within the operation of these printers that can be varied to obtain optimum print quality. This study explores the use of externally induced mechanical vibrations to the nozzle tip as a potential method to improve the quality of 3D printed parts. Induced vibration is expected to decrease the porosity of printed parts and improve the cohesion between print beads, ultimately improving their mechanical properties. The objective is to understand the positional accuracy of the prints with the added vibration and then to determine the optimum level of vibration to achieve best quality prints. For the study, the extruder filament is replaced with a pointed-tip pen that can mark the exact location where the printer delivers the material. A comparison between the locations marked by the pen with and without vibrations shows that the errors induced by the added vibration are not significantly different from those caused by the uncertainties of the printer itself. Further, this study also explores the optimum motor speeds to achieve a uniform distribution of material and determines medium motor speeds that provide maximum amplitude of vibration which are more desirable for a uniform infill.
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Chirico Scheele, Stefania, Martin Binks, and Paul F. Egan. "Design and Manufacturing of 3D Printed Foods With User Validation." In ASME 2020 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/detc2020-22462.

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Abstract Additive manufacturing is becoming widely practical for diverse engineering applications, with emerging approaches showing great promise in the food industry. From the realization of complex food designs to the automated preparation of personalized meals, 3D printing promises many innovations in the food manufacturing sector. However, its use is limited due to the need to better understand manufacturing capabilities for different food materials and user preferences for 3D food prints. Our study aims to explore the 3D food printability of design features, such as overhangs and holes, and assess how well they print through quantitative and qualitative measurements. Designs with varied angles and diameters based on the standard design limitations for additive manufacturing were printed and measured using marzipan and chocolate. It was found that marzipan material has a minimum feature size for overhang design at 55° and for hole design at 4mm, while chocolate material has a minimum overhang angle size of 35° and does not reliably print holes. Users were presented a series of designs to determine user preference (N = 30) towards the importance of fidelity and accuracy between the expected design and the 3D printed sample, and how much they liked each sample. Results suggest that users prefer designs with high fidelity to their original shape and perceive the current accuracy/precision of 3D printers sufficient for accurately printing three-dimensional geometries. These results demonstrate the current manufacturing capabilities for 3D food printing and success in achieving high fidelity designs for user satisfaction. Both of these considerations are essential steps in providing automated and personalized manufacturing for specific user needs and preferences.
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Heinrich, Andreas. "Can one 3D print a laser?" In Organic Photonic Materials and Devices XXII, edited by Christopher E. Tabor, François Kajzar, and Toshikuni Kaino. SPIE, 2020. http://dx.doi.org/10.1117/12.2547183.

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Le, Xiaobin, Rami Akouri, Anthony Latassa, Brett Passemato, and Ryan Wales. "Mechanical Property Testing and Analysis of 3D Printing Objects." In ASME 2016 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/imece2016-65067.

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3D printing known as additive manufacturing has been widely used in academics and industries to make various 3D objects for various applications. The strength of the 3D printing parts is different from its original material strength due to this additive manufacturing technique. The 3D printing parts should be treated as anisotropic materials. However, the information of mechanical property such as the ultimate strength of 3D printing parts is very limited. There is little information about the mechanical property of 3D printing parts at different print angles. This research was focused on exploring the mechanical properties of 3D printing objects. The tensile test specimen of two different materials: acrylonitrile butadiene styrene-electrostatic dissipative (ABS-ESD) and Nylon 12 were printed at the 5 different print angles through the Fortus 450mc 3D printer. Tensile test results, data analysis, detailed discussion and the empirical formula of the tensile strength of 3D printing objects vs different print angles will be presented.
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Halama, Radim, Marek Pagáč, Zbyněk Paška, Pavel Pavlíček, and Xu Chen. "Ratcheting Behaviour of 3D Printed and Conventionally Produced SS316L Material." In ASME 2019 Pressure Vessels & Piping Conference. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/pvp2019-93384.

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Abstract This paper shows some differences in stress-strain behavior of conventional and 3D print SS316L. First, the influence of strain rate on the monotonic curve has been investigated. Specimens produced by Selective Laser Melting technology were not so sensitive to the strain rate. Viscoplasticity has to be taken into account for cyclic loading modelling in the case of conventionally produced SS316L but not for the 3D printed material. A set of low-cycle fatigue tests was performed on specimens from both used production technologies. Uniaxial ratcheting tests were realized under constant amplitude of stress and varying mean stress. Experimental results show a good ratcheting endurance of SS316L produced by the Selective Laser Melting technology. Biaxial ratcheting tests were realized for 3D print SS316L only. Applied Digital Image Correlation technique makes possible to get more ratcheting curves from each ratcheting test.
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Rooney, Sean, and Kishore Pochiraju. "Simulations of Online Non-Destructive Acoustic Diagnosis of 3D-Printed Parts Using Air-Coupled Ultrasonic Transducers." In ASME 2019 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/imece2019-11101.

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Abstract The open-loop process by which 3D printers operate often leads to significant time and material losses due to print failures. A challenge in Additive Manufacturing (AM) is assessing 3D-printed parts mid-print for the dimensional stability of the internal structures and their microstructure and material properties. These internal features are typically opaque to visual inspections after print and can only be accessed for property characterization if the part is cut open. An assessment of methods for evaluating parts in situ using air-coupled ultrasonic transducers in this paper. The purpose is to determine the microstructure and limited effective properties (density and modulus) of internal structures during the print process using acoustic methods. We examine the effectiveness of acoustic wave reflection, absorption and propagation through the infill channels, which make up a part on a fused deposition modeling printer to obtain dimensional measurements while the part is on the print bed. We simulated the acoustic wave response for common frequencies of commercially-available air-coupled transducers (25–300 kHz) placed near simulated 3D-printed parts. We compared the return signals using the k-Wave Acoustics Toolbox, a time-domain model for acoustic wave propagation, and validated these simulations with physical readings. The results showed the behavior of the peak amplitude of the received signals for various materials and infill channel lengths. Simulations and physical experiments were conducted for both through-transmission and pulse-echo approaches. The simulations optimize parameters for a maximized peak received signal strength. The results will limit the scope of computationally expensive methods of observing obfuscated structural deficiencies and deformations in a 3D-printed part in situ using air-coupled ultrasonic transducers and similar ultrasonic NDE technologies.
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Lai, Heather L., Cuiyu Kuang, and Jared Nelson. "Modeling and Experimental Characterization of Viscoelastic 3D Printed Spring/Damper Systems." In ASME 2017 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/imece2017-71957.

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The development of flexible, viscoelastic materials for consumer 3D printers has provided the opportunity for a wide range of devices with damping behavior such as tuned vibration isolators to be innovatively developed and inexpensively manufactured. However, there is currently little information available about the dynamic behavior of these 3D printed materials necessary for modeling of dynamic behavior prior to print. In order to fully utilize these promising materials, a deeper understanding of the material properties, and the subsequent dynamic behavior is critical. This study evaluates the use of three different types of models: transient response, frequency response and hysteretic response to predict the dynamic behavior of viscoelastic 3D printed materials based on static and dynamic material properties. Models of viscoelastic materials are presented and verified experimentally using two 3D printable materials and two traditional viscoelastic materials. The experimental response of each of the materials shows agreement with the modeled behavior, and underscores the need for improved characterization of the dynamic properties of viscoelastic 3D printable materials.
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Reports on the topic "3D print materiál"

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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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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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