Relevant bibliographies by topics / 3D powder printing

Academic literature on the topic '3D powder printing'

Author: Grafiati
Published: 6 September 2023

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Journal articles on the topic "3D powder printing"

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Whyte, Daniel, Benjamin J. Allardyce, Abbas Z. Kouzani, Xungai Wang, and Rangam Rajkhowa. "Understanding Morphology, Bulk Properties, and Binding of Silk Particles for 3D Printing." Powders 1, no. 2 (June 18, 2022): 111–28. http://dx.doi.org/10.3390/powders1020009.

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Silk fibroin has emerged as a leading biomaterial for biomedical applications. 3D printing has been successfully used for printing with silk fibroin, albeit in the form of a bioink, in direct-write 3D printers. However, in the form of bioinks, stability and mechanical attributes of silk are lost. An innovative alternative to producing 3D printed solid silk constructs is silk milled into powder for printing in a binder jetting printer. In this work, we focus on characteristics of silk powder to determine suitability for use in 3D printing. Two different silk powders are compared with hydroxyapatite powder, a known biomaterial for biomedical constructs. We have investigated powder size and shape by Camsizer X2 and Scanning Electron Microscope and bulk behaviour, dynamic flow behaviour, and shear behaviour by FT4 powder rheometer. Preliminary printing tests were conducted in an in-house custom-built printer designed for silk powder. It was found that silk powder has low flowability and stability. Therefore, to print solely out of silk powder, a 3D printer design will need sophisticated techniques to produce flow to ensure even distribution and consistent thickness of powder layers during the printing process. It was also found that high concentrations of formic acid (>75 to 99 wt.%) can fuse particles and therefore be used as a binder ink for 3D printing. The printer design challenges for silk powder are discussed.
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Goulas, Athanasios, and Ross J. Friel. "3D printing with moondust." Rapid Prototyping Journal 22, no. 6 (October 17, 2016): 864–70. http://dx.doi.org/10.1108/rpj-02-2015-0022.

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Purpose The purpose of this paper is to investigate the effect of the main process parameters of laser melting (LM) type additive manufacturing (AM) on multi-layered structures manufactured from JSC-1A Lunar regolith (Moondust) simulant powder. Design/methodology/approach Laser diffraction technology was used to analyse and confirm the simulant powder material particle sizes and distribution. Geometrical shapes were then manufactured on a Realizer SLM™ 100 using the simulant powder. The laser-processed samples were analysed via scanning electron microscopy to evaluate surface and internal morphologies, X-ray fluorescence spectroscopy to analyse the chemical composition after processing, and the samples were mechanically investigated via Vickers micro-hardness testing. Findings A combination of process parameters resulting in an energy density value of 1.011 J/mm2 allowed the successful production of components directly from Lunar regolith simulant. An internal relative porosity of 40.8 per cent, material hardness of 670 ± 11 HV and a dimensional accuracy of 99.8 per cent were observed in the fabricated samples. Originality/value This research paper is investigating the novel application of a powder bed fusion AM process category as a potential on-site manufacturing approach for manufacturing structures/components out of Lunar regolith (Moondust). It was shown that this AM process category has the capability to directly manufacture multi-layered parts out of Lunar regolith, which has potential applicability to future moon colonization.
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Zhang, Qingfa, Hongzhen Cai, Andong Zhang, Xiaona Lin, Weiming Yi, and Jibing Zhang. "Effects of Lubricant and Toughening Agent on the Fluidity and Toughness of Poplar Powder-Reinforced Polylactic Acid 3D Printing Materials." Polymers 10, no. 9 (August 21, 2018): 932. http://dx.doi.org/10.3390/polym10090932.

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Three dimensional (3D) printing materials were manufactured with polylactic acid (PLA) and poplar powder using the twin screw extruder and 3D printing consumables extruder. Lubricant (TPW604) and toughening agent polyolefin elastomer (POE) were utilized to improve the fluidity and toughness of the materials. 3D printing materials were tested by infrared spectroscopy, X-ray diffraction, melt flow rate, rheology behavior, impact and scanning electron microscope. The results show that the poplar powder could decrease impact strength of PLA, the same as TPW604. Unlike poplar powder, TPW604 can improve the fluidity of 3D printing materials. And POE can fill the voids formed by poplar powder in PLA, enhance interface compatibility between poplar powder and PLA, and effectively improve the fluidity and impact strength of 3D printing materials.
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Boyle, Bret M., Panupoan T. Xiong, Tara E. Mensch, Timothy J. Werder, and Garret M. Miyake. "3D printing using powder melt extrusion." Additive Manufacturing 29 (October 2019): 100811. http://dx.doi.org/10.1016/j.addma.2019.100811.

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Chugunov, Svyatoslav, Andrey Smirnov, Anastasia Kholodkova, Andrey Tikhonov, Oleg Dubinin, and Igor Shishkovsky. "Evaluation of Stereolithography-Based Additive Manufacturing Technology for BaTiO3 Ceramics at 465 nm." Applied Sciences 12, no. 1 (January 1, 2022): 412. http://dx.doi.org/10.3390/app12010412.

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A piezoceramic BaTiO3 material that is difficult for 3D printing was tested with a homemade laser-based stereolithography (SLA) setup. The high light absorbance of BaTiO3 in the spectral range of 350–410 nm makes this material hardly usable with most commercial SLA 3D printers. The typical polymerization depth of BaTiO3 ceramic pastes in this spectral range hardly reaches 30–50 µm for 40 vol % powder loading. A spectral change to 465 nm was realized in this work via a robot-based experimental SLA setup to improve the 3D printing efficiency. The ceramic paste was prepared from a preconditioned commercial BaTiO3 powder and used for 3D printing. The paste’s polymerization was investigated with variation of powder fraction (10–55 vol %), speed of a laser beam (1–10 mm/s, at constant laser power), and a hatching spacing (100–1000 µm). The polymerization depths of over 100 µm were routinely reached with the 465 nm SLA for pastes having 55 vol % powder loading. The spectral shift from 350–410 nm spectral region to 465 nm reduced the light absorption by BaTiO3 and remedied the photopolymerization process, emphasizing the importance of comprehensive optical analysis of prospective powders in SLA technology. Two multi-layered objects were 3D-printed to demonstrate the positive effect of the spectral shift.
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Shi, Jing Min, Jian Wei Wang, and Wei Xiao. "Research Progress of Preparation Technology of Nano Copper Powder for 3D Printing." Key Engineering Materials 777 (August 2018): 150–57. http://dx.doi.org/10.4028/www.scientific.net/kem.777.150.

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Nanocopper has become one of the research hotspots of metal powder for 3D printing, due to its excellent properties. In this paper, technical methods, process flow and research progress were systematically introduced of nanocopper powder for 3D printing. Preparation of nano-copper powder for 3D printing are mainly physical and chemical methods. Physical methods include atomization method, physical vapor deposition method, grinding method, electric explosion method. Chemical methods include sol-gel method, radiation chemistry, plasma, microemulsion, hydrothermal, liquid reduction and so on. The advantages and disadvantages of these methods were compared in detail, and the future development direction of nano-copper powder for 3D printing was look forward to.
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Gaisin, Al F., R. R. Kayumov, А. I. Kuputdinova, and R. R. Mardanov. "Plasma-liquid recycling of metal powder for 3D printing." Physics and Chemistry of Materials Treatment 1 (2023): 37–44. http://dx.doi.org/10.30791/0015-3214-2023-1-37-44.

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The limits and prospects of plasma-liquid recycling of EOS StainlessSteel PH1 powder by processing products made by selective laser melting (SLM) on an Electro Optical Systems (EOS) 3D printer were studied. The current-voltage characteristics (CVC), types and forms of combustion of gas-discharge plasma in the process of processing products of additive manufacturing have been studied. Microphotographs of the powder were obtained by scanning electron microscopy, and the elemental and granulometric composition of the obtained powders were determined. It has been established that plasma-liquid recycling makes it possible to obtain metalic powders for the 3D printing in range from 10 to 120 microns by size.
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Zhang, Yajuan, Xiaoyan Song, Haibin Wang, and Zuoren Nie. "A novel method of preparing Ti powder for 3D printing." Rapid Prototyping Journal 24, no. 6 (August 13, 2018): 1034–39. http://dx.doi.org/10.1108/rpj-07-2017-0151.

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Purpose The purpose of this paper is to propose a novel method to prepare pure Ti powder for 3D printing with tailorable particle size distribution. Design/methodology/approach The main procedures of the present method consist of gas state reaction to synthesize TiH2 nanoparticles, agglomeration to obtain micronscale powder particles by spray drying, and densification of particle interior by heat treatment. Findings The prepared Ti powder has a specific bimodal particle size distribution in a range of small sizes, good sphericity and high flowability. Particularly, this new technique is capable of controlling powder purity and adjusting particle size. Originality/value To the best knowledge of the authors, the approach for preparing 3D printing metallic powders from nanoparticles has not been reported in the literature so far. This work provides a novel method that is particularly applicable to prepare 3D printing metallic powders which have small initial particle sizes and high reactivity in the air.
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Bai, D. Y., Y. D. Yao, J. P. Liu, S. Xu, L. M. Kang, D. B. Liu, Y. M. Luo, and Y. Li. "Study on the safety of modified aluminum powder in 3D printing process." Journal of Physics: Conference Series 2478, no. 3 (June 1, 2023): 032081. http://dx.doi.org/10.1088/1742-6596/2478/3/032081.

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Abstract The application of 3D printing technology in the field of explosives has been a research hotspot in recent years. As the most common explosive additive, how to improve the reactivity of aluminum powder has been widely concerned by many scholars. In order to explore the influence of coating modification process on the safety of aluminum powder in 3D printing process, Hartmann tube and Ignition temperature test system were used to study the sensitivity of dust samples to energy and temperature. The results show that the sensitivity of coated aluminum powder to electrostatic energy is significantly reduced, and the sensitivity to temperature is slightly increased. Better modification technology improves the safety of aluminum powder in 3D printing process. And the flame front propagation law is studied, the results show that the modified aluminum powder has more excellent reactivity. It provides basic theoretical data support for the safe application of the modification technology of aluminum powder in the 3D printing process, which has important reference value for the future application research of 3D printing technology in the field of explosives, and is also one of the key development directions in the future. in constructing both.
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Mokshina, N. Ya, V. V. Khripushin, and M. S. Shcherbakova. "Colorometric study of polyamide-12 powder aging." Industrial laboratory. Diagnostics of materials 86, no. 10 (October 14, 2020): 31–35. http://dx.doi.org/10.26896/1028-6861-2020-86-10-31-35.

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The key point of 3D printing by selective laser sintering is the necessity of complete filling of the working chamber of the printer with a powder material. Since the powder is not completely consumed during the printing process, 25 – 30 wt.% of secondary (unused in the previous cycle) power is added to the primary material in each cycle. Repeated recirculation leads to degradation of the properties of the working powder mixture and increases the probability of rejects. We present the results of a colorimetric study of aging of polyamide-12 powder used in 3D printing by the method of selective laser sintering. Scanning and computer processing of digital images of primary and secondary polyamide powders obtained by colorimetry were performed using MathLab program package. Colorimetric analysis included the expression of the sample color using the parameters of color models applied in digital technologies for synthesizing colored images. The number of cycles before the onset of intensive destruction is no more than three, which is consistent with the practical experience in printing by selective laser sintering. The results characterizing change in the color of the secondary powder depending on the duration of thermal exposure and the gas medium are presented. It is shown that long-term storage of the powder for subsequent use is not advisable, since the initiators of destruction are already present in the material. Thermal oxidative destruction is shown to be a critical factor limiting the use of secondary powder along with changes in the crystallinity and fractional composition of particles. Computer processing of images of polymer powder obtained by the colorimetric method can be used to control the aging process of consumables and to predict the probability of rejections in 3D printing.
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Dissertations / Theses on the topic "3D powder printing"

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Touma, Rikard, and Nathalie Pettersson. "3D-printing med träEn möjlighet för framtiden?" Thesis, Örebro universitet, Institutionen för naturvetenskap och teknik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:oru:diva-92364.

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3D-skrivare har många användningsområden och de har blivit vanliga i många industrier.Idag talas det om att denna teknik kan vara en möjlig väg till mer hållbart byggande.Tekniken anses lovande inom byggproduktion bland annat för att det visat sig att den kanreducera materialspillet och ge kortare byggtider. Till viss del används tekniken redan förbyggnadstillverkning, men då främst med betong.Målet med arbetet är att beskriva nuvarande kunskap rörande 3D-printing medträbaserad massa, samt att undersöka möjligheten till att använda en träbaserad massabestående av sågspån, vatten och lignin vid 3D-printing.För att kunna nå målet användes en kombination av litteratursökning och laborativaexperiment. Litteratursökningen användes både för att undersöka tidigare genomförda studiergällande träbaserade material i samband med 3D-printing, samt som inspiration för deingredienser och proportioner som används i de laborativa experimenten.Enbart studier om träbaserad 3D-printing studerades. De testobjekt som togs fram i delaborativa experimenten utvärderades i hållfasthet, dimensionsstabilitet och vidhäftning.Resultaten av det laborativa arbetet tyder på att det framtagna materialet går att extrudera,men att det har låg draghållfasthet. Lagren bands samman bra för samtliga tester, medantryckhållfastheten gav varierande resultat. Högst tryckhållfasthet gavs av den blandning somhade högst andel lignin, samt torkades under längst tid.Slutsatsen är att materialet kan vara till nytta, men att rätt användningsområde börbestämmas, då materialet inte tål alltför stora laster.
3D printers have many uses and they have become common in many industries. Today, thistechnology is seen as a possible route to more sustainable construction. The technology isconsidered promising in construction engineering, among other things because it has beenshown that it can reduce material waste and provide shorter production times. To someextent, the technology is already being used for building construction, but then mainly withconcrete.The aim of this study is to describe current knowledge regarding 3D printing with woodbasedpulp and to investigate the possibility of using a wood-based pulp consisting ofsawdust, water and lignin for 3D printing.In order to reach the goal, a combination of literature search and laboratory experiments wasused. The literature search was used both to investigate previously conducted studiesregarding wood-pulp based materials in 3D printing and as inspiration for the ingredients andproportions used in the laboratory experiments.Only studies on wood-based 3D printing were studied. The test objects produced in thelaboratory experiments were evaluated in strength, dimensional stability and adhesion. Theresults of the laboratory work indicate that the produced material can be extruded, but that ithas low tensile strength. The layers bonded well for all tests, while the compressive strengthresults varied. The highest compressive strength was given by the mixture with the highestproportion of lignin and the longest drying time.The conclusion is that the material might be useful, but that the correct area of use should bedetermined, as the material cannot withstand excessive loads.Keywords:
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Nur, Hassan Mohammed. "Fabrication of advanced ceramics and selective metallization of non-conductive substrates by inkjet printing." Thesis, Brunel University, 2002. http://bura.brunel.ac.uk/handle/2438/4823.

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Inkjet printing of ceramic components and gold conductive tracks was carried out in this study. A commercial inkjet printer, designed for printing one layer of 2D images on paper, was modified to give adequate resolution, to reverse the substrate for overprinting many layers and to accommodate the increase in thickness of 3D components during printing. Ceramic inks were prepared by wet ball milling and printed to form 3D structures. The powders used were alumina, zirconia, lead zirconate titanate (PZT) and barium titanate. The substrate used for printing the ceramic parts was an overhead transparency. Methods to stop or reduce ink flow were devised and used during printing of the ceramic parts. The alumina and zirconia powders were used for the fabrication of multi-layered laminates. The lead zirconate titanate was used to fabricate components with pillars, walls, vertical channels and x-y-z channel network. During printing of the x-y-z channel network, carbon was used as a support structure and then removed during firing. Barium titanate and carbon powders were used to form the first storey of a capacitor with a multi-storey car park structure. The printed parts were pyrolysed and fired in an oxidising environment and then characterised with scanning electron microscopy. The causes of micro structural defects found were discussed and prevention methods suggested. Organic gold powder was dissolved in methanol and then printed on three different substrates to form conductive gold tracks. The substrates used included alumina, glazed tile and microscope glass slides. The printed tracks were fired in air. The decomposition characteristics of the organic gold compound were studied with TGA and Differential Scanning Calorimetry (DSC). Scanning electron microscope was used to examine the fired gold film for defects and conductivity measurement of the tracks was carried out with a programmable multimeter.
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Goss, Cullen. "SLM 125 Single Track and Density Cube Characterization for 316L Stainless Steel." DigitalCommons@CalPoly, 2019. https://digitalcommons.calpoly.edu/theses/2050.

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Selective Laser Melting is a rapidly developing additive manufacturing technique that can be used to create unique metal parts with tailormade properties not possible using traditional manufacturing. To understand the process from a most basic level, this study investigates system capabilities when melting single tracks of material. Individual tracks allow for a wide range of scan speeds and laser powers to be utilized and the melt pools analyzed. I discuss how existing studies and simulations can be used to narrow down the selection of potentially successful parameter combinations as well as the limitations of interpretation for single track information. Once we attain a solid understanding of what parameters perform well at a bead level, we can move onto looking at complete 3D parts. A challenge we have faced is creating near fully dense parts and determining a reliable density measurement technique that is accessible for operators at our university. Our results show that the previously determined optimized scan speed and laser power can consistently create parts with >99.5% density over a range of sizes using an analysis method utilizing readily available equipment and software.
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Fitzgerald, Shawn. "A pneumatic conveying powder delivery system for continuously heterogeneous material deposition in solid freeform fabrication." Thesis, Virginia Tech, 1996. http://hdl.handle.net/10919/46072.

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Great improvements are continuously being made in the solid free form fabrication (SFF) industry in terms of processes and materials. Fully functional parts are being created directly with little, if any, finishing. Parts are being directly fabricated with engineering materials such as ceramics and metals. This thesis aims to facilitate a substantial advance in rapid prototyping capabilities, namely that of fabricating parts with continuously heterogeneous material compositions. Because SFF is an additive building process, building parts layer-by-layer or even point-by-point, adjusting material composition throughout the entire part, in all three dimensions, is feasible. The use of fine powders as its build material provides the potential for the Selective Laser Sintering (SLS), ThreeDimensional Printing (3DP), and Freeform Powder Molding (FPM) processes to be altered to create continuously heterogeneous material composition. The current roller distribution system needs to be replaced with a new means of delivering the powder that facilitates selective heterogeneous material compositions. This thesis explores a dense phase pneumatic conveying system that has the potential to deliver the powder in a controlled manner and allow for adjustment of material composition throughout the layer.


Master of Science
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Westbeld, Julius. "Investigation of support structures of a polymer powder bed fusion process by use of Design of Experiment (DoE)." Thesis, KTH, Lättkonstruktioner, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-243867.

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In this thesis, support structures of a polymer powder based process called XXXXXXXX™ are examined. These structures are crucial for most additive manufacturing processes. The effects of several factors on five industrially important characteristics of support structures are examined by use of the Design of Experiment (DoE) method. It describes the planning as well as the analysis of the experiments. The experiments are planned in a fractional factorial 211-5 design with 64 specimens, resulting in a resolution of IV. The analysis of the data is done by use of the ANOVA method, with which the significance of effects and interaction effects are checked.
I detta examensarbete undersöks stödstrukturer för en polymer-pulverbaserad process kallad XXXXXXXX. Dessa strukturer är väsentliga för de flesta aditiv tillverkning. Med hjälp av metoden "Design of Experiment" (DoE) undersöks effekten av flera faktorer på fem industriellt viktiga egenskaper för stödstrukturer. DoE beskriver både planeringen och analysen av experiment. Experimenten planeras i en fraktionerad faktoriell 211-5 design med 64 provexemplar vilket resulterar i en upplösning av IV. Dataanalysen genomförs med hjälp av ANOVA-metoden, med vilken signifikansen av effekter och interaktionseffekter kan undersökas.
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Clark, Jared A. "The Effects of Build Orientation on Residual Stresses in AlSi10Mg Laser Powder Bed Fusion Parts." Youngstown State University / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=ysu1578819644598848.

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Miller, Jacob T. "Sulfuric Acid Corrosion to Simulate Microbial Influenced Corrosion on Stainless Steel 316L." Youngstown State University / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=ysu151621775594905.

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Fan, Zongyue. "A Lagrangian Meshfree Simulation Framework for Additive Manufacturing of Metals." Case Western Reserve University School of Graduate Studies / OhioLINK, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=case1619737226226133.

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GROPPO, RICCARDO. "Sviluppo e Industrializzazione di una macchina LPF e validazione attraverso l'ottimizzazione dei parametri di processo di Ottone CuZn42 e Acciaio Armonico C67." Doctoral thesis, Università degli studi di Modena e Reggio Emilia, 2021. http://hdl.handle.net/11380/1245517.

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Le tecnologie di costruzione additiva, dalla loro nascita alle prime applicazioni industriali, hanno fatto un grande salto in termini di sviluppo di hardware e materiali. La continua ricerca di nuovi mercati e la crescente domanda hanno reso più accessibili i costi di tali tecnologie. Dall'uso dei polimeri per fare prototipi alle polveri metalliche per fare parti meccaniche reali i concetti sono sempre gli stessi, costruendo la parte strato per strato. In termini di denaro dagli anni Ottanta ad oggi il processo di stampa 3D mantiene un trend positivo con molti più aumenti per il futuro. In termini di flussi monetari ed energetici durante la produzione di parti complesse, le tecnologie di costruzione additiva possono avere incrementi positivi. Con le tecnologie di costruzione additiva viene anche preso in considerazione l’aspetto legato alla misurazione del consumo energetico di produzione per le valutazioni dell'inventario del ciclo di vita. [2] In molte catene di produzione tradizionali, dove stime affidabili del consumo energetico potrebbero non essere disponibili, l'adozione della tecnologia per costruzione additiva consente ai produttori di fornire ai propri clienti dati affidabili sull'energia incorporata nei prodotti o nei componenti durante la fase di produzione. [2] È stato dimostrato che la selezione della configurazione dei costi minimi in Additive Manufacturing potrebbe portare all'effetto secondario della riduzione al minimo del consumo energetico di processo. [2] La mia tesi di dottorato discuterà una specifica tecnologia di produzione additiva, basata sul processo di fusione del letto in polvere utilizzando un LASER come fonte di fusione. Verranno analizzate le principali componenti costruttive presenti nella macchina prototipo, cercandone le principali criticità (sistema di filtraggio e recupero delle polveri, abbattimento polvere nera, flusso del gas in camera, misura delle perdite di carico nei tratti caratteristici dell’impianto, sistema di raccolta delle polveri, sistema di distribuzione e di deposizione delle polveri sul piatto di stampa) e, nel caso queste causino un arresto anomalo oppure un’irregolarità nella qualità nel componente stampato, se ne svilupperà una modifica oppure una sostituzione radicale del componente in esame. Verificata la stabilità meccanica dell’intera macchina verranno analizzate le proprietà meccaniche dei campioni ottenuti con acciaio inossidabile X2CrNiMo17-12-2 - AISI316L, polvere di ottone CuZn42 e acciaio C67 - Acciaio Temperato. Le principali proprietà meccaniche richieste per un componente costruito per costruzione additiva sono in termini di resistenza meccanica porosità, densità, durezza Brinell, carico a rottura e tensione di snervamento. In particolare, verranno effettuati dei rilevamenti della densità del provino mediante misurazione della densità volumetrica relativa con metodo di Archimede. Successivamente verrà stabilita la bontà della rugosità superficiale attraverso acquisizione di mappe per mezzo di un microscopio ottico e attraverso un software per l’analisi d’immagine ne verrà poi misurata la rugosità superficiale media. Lo stesso campione verrà poi utilizzato per misurare la durezza media del materiale per mezzo di un durometro. Per testare il carico a rottura e il limite di snervamento verranno prodotti dei campioni con geometria ad osso di cane a sezione circolare a cui verrà montato un estensimetro analogico. Il software di elaborazione dei dati elabora la curva sforzo – deformazione.
The additive manufacturing technologies, from their birth to the first industrial applications, made a big jump in terms of hardware and material development. The continuing research for new markets along with a growing demand have made sure that the costs of such technologies have become more accessible. From the using of polymers to do prototypes to metal powders to do real mechanical parts the concepts are always the same, building the part layer by layer. In terms of money from the eighties to present days the 3D printing process maintain a positive trend with much more increases for the future. In terms of monetary and energy flows during the production of complex parts, the additive manufacturing technologies can have positive increments. Thus the adoption of Additive Manufacturing also simplifies measurement of the manufacturing energy consumption for life cycle inventory assessments. In many traditional supply chains, where reliable estimates of cumulative energy consumption may be unavailable, the adoption of AM allows producers to provide their customers with reliable data on the energy embedded into products or component during the manufacturing stage. It has been shown that selecting the minimum cost configuration in Additive Manufacturing is likely to lead to the secondary effect of minimizing process energy consumption. My PhD thesis will discuss a specific additive manufacturing technology, based on the powder bed fusion process using a LASER as a melting source. The main construction components present in the prototype machine will be analyzed, looking for the main critical issues (filtering and powder recovery system, black powder abatement system, in-chamber gas flow, measurement of load losses in the characteristic sections of the plant, powder collection system, distribution and powder deposition system on the printing plate) and, if these cause a crash or an irregularity in the quality in the printed component, a radical modification or replacement of this component will develop. Once the mechanical stability of the entire machine has been verified, the mechanical properties of the samples obtained with stainless steel X2CrNiMo17-12-2 - AISI316L, CuZn42 brass powder and C67 steel - Tempered steel will be analyzed. The main mechanical properties required for a component built for additive manufacturing are in terms of mechanical strength porosity, density, hardness, ultimate tensile strength, and yield tension. Measurements of the density of the specimen will be carried out by measuring the relative volumetric density by Archimedes method. Subsequently, the quality of surface roughness will be measured through the acquisition of maps by means of an optical microscope and through an image analysis software the average surface roughness will then be measured. The same sample will then be used to measure the average hardness of the material by means of a durometer. To test the ultimate tensile strength and the yield strength, samples with circular section will be produced to which an analog extensometer will be mounted. Data processing software processes the strain -strain curve.
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Ramírez, Jiménez Guillermo. "Electric sustainability analysis for concrete 3D printing machine." Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-258928.

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Nowadays, manufacturing technologies become more and more aware of efficiency and sustainability. One of them is the so called 3D printing. While 3D printing is often linked to plastic, the truth is there are many other materials that are being tested which could have several improvements over plastics.One of these options is stone or concrete, which is more suitable the architecture and artistic fields. However, due to its nature, this new technology involves the use of new techniques when compared to the more commonly used 3D printers. This implies that it could interesting to know how much energy efficient these techniques are and how can they be improved in future revisions.This thesis is an attempt to disclose and analyze the different devices that make up one of these printers and with this information, build a model that accurately describes its behavior.For this purpose, the power is measured at many points and later it is analyzed and fitted to a predefined function. After the fitting has been done, an error is calculated to show how accurate the model is when compared to the original data.It was found that many of these devices produce power spikes due to its nonlinear behavior. This behavior is usually related to switching, and can avoided with different devices.Finally, some advice is given focused on future research and revisions, which could be helpful for safety, efficiency and quality.
Numera blir tillverkningstekniken alltmer medveten om effektivitet och hållbarhet. En av dem är den så kallade 3D­utskriften. Medan 3D­utskrift ofta är kopplad till plast, är verkligheten att det finns många andra material som testas, vilket kan ha flera förbättringar över plast.Ett av dessa alternativ är sten eller betong, vilket är mer lämpligt inom arkitektur och konstnärliga fält. På grund av sin natur inbegriper denna nya teknik användningen av nya tekniker jämfört med de vanligare 3D­skrivarna. Detta innebär att det kan vara intressant att veta hur mycket mer energieffektiva dessa tekniker är och hur de kan förbättras i framtida revisioner.Denna avhandling är ett försök att studera och analysera de olika enheter som utgör en av dessa skrivare och med denna information, bygga en modell som exakt beskriver dess beteende.För detta ändamål mäts effekten på många punkter och senare analyseras och anpassas den till en fördefinierad funktion. Efter anpassning har gjorts beräknas felet för att visa hur exakt modellen är jämfört med originaldata.Det visade sig att många av dessa enheter producerar spännings­spikar på grund av dess olinjära beteende. Detta beteende är vanligtvis relaterat till omkoppling och kan undvikas med olika enheter.Slutligen ges några råd om framtida forskning och revideringar, vilket kan vara till hjälp för säkerhet, effektivitet och kvalitet.
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Books on the topic "3D powder printing"

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Kellner, Imke Nora. Materialsysteme für das pulverbettbasierte 3D-Drucken. München: Herbert Utz Verlag, 2012.

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Department of Defense. Navy Additive Manufacturing: Adding Parts, Subtracting Steps - 3D Printing, Tooling, Aerospace, Binder Jetting, Directed Energy Deposition, Material Extrusion, Powder Fusion, Photopolymerization. Independently Published, 2017.

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Narayan, Roger J., ed. Additive Manufacturing in Biomedical Applications. ASM International, 2022. http://dx.doi.org/10.31399/asm.hb.v23a.9781627083928.

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Volume 23A provides a comprehensive review of established and emerging 3D printing and bioprinting approaches for biomedical applications, and expansive coverage of various feedstock materials for 3D printing. The Volume includes articles on 3D printing and bioprinting of surgical models, surgical implants, and other medical devices. The introductory section considers developments and trends in additively manufactured medical devices and material aspects of additively manufactured medical devices. The polymer section considers vat polymerization and powder-bed fusion of polymers. The ceramics section contains articles on binder jet additive manufacturing and selective laser sintering of ceramics for medical applications. The metals section includes articles on additive manufacturing of stainless steel, titanium alloy, and cobalt-chromium alloy biomedical devices. The bioprinting section considers laser-induced forward transfer, piezoelectric jetting, microvalve jetting, plotting, pneumatic extrusion, and electrospinning of biomaterials. Finally, the applications section includes articles on additive manufacturing of personalized surgical instruments, orthotics, dentures, crowns and bridges, implantable energy harvesting devices, and pharmaceuticals. For information on the print version of Volume 23A, ISBN: 978-1-62708-390-4, follow this link.
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Craig, John. Python for 3D Printing: Using Python to Enhance the Power of OpenSCAD for 3D Modeling. Independently Published, 2019.

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Sharma, Sarah, and Rianka Singh, eds. Re-Understanding Media. Duke University Press, 2022. http://dx.doi.org/10.1215/9781478022497.

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The contributors to Re-Understanding Media advance a feminist version of Marshall McLuhan’s key text, Understanding Media: The Extensions of Man, repurposing his insight that “the medium is the message” for feminist ends. They argue that while McLuhan’s theory provides a falsely universalizing conception of the technological as a structuring form of power, feminist critics can take it up to show how technologies alter and determine the social experiences of race, gender, class, and sexuality. This volume showcases essays, experimental writings, and interviews from media studies scholars, artists, activists, and those who work with and create technology. Among other topics, the contributors extend McLuhan’s discussion of transportation technology to the attics and cargo boxes that moved Black women through the Underground Railroad, apply McLuhan’s concept of media as extensions of humans to analyze Tupperware as media of containment, and take up 3D printing as a feminist and decolonial practice. The volume demonstrates how power dynamics are built into technological media and how media can be harnessed for radical purposes. Contributors. Nasma Ahmed, Morehshin Allahyari, Sarah Banet-Weiser, Wendy Hui Kyong Chun, Brooke Erin Duffy, Ganaele Langlois, Sara Martel, Shannon Mattern, Cait McKinney, Jeremy Packer, Craig Robertson, Sarah Sharma, Ladan Siad, Rianka Singh, Nicholas Taylor, Armond R. Towns, and Jennifer Wemigwans
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Book chapters on the topic "3D powder printing"

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Zhu, Yanli, Ahmet Okyay, Mihaela Vlasea, Kaan Erkorkmaz, and Mark Kirby. "The Additive Journey from Powder to Part." In Women in 3D Printing, 135–63. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-70736-1_11.

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Fina, Fabrizio, Simon Gaisford, and Abdul W. Basit. "Powder Bed Fusion: The Working Process, Current Applications and Opportunities." In 3D Printing of Pharmaceuticals, 81–105. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-90755-0_5.

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Dourandish, M., Dirk Godlinski, and Abdolreza Simchi. "3D Printing of Biocompatible PM-Materials." In Progress in Powder Metallurgy, 453–56. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-419-7.453.

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Awari, G. K., C. S. Thorat, Vishwjeet Ambade, and D. P. Kothari. "Powder-Based Additive Manufacturing Systems." In Additive Manufacturing and 3D Printing Technology, 89–106. First edition. | Boca Raton, FL : CRC Press/Taylor & Francis Group, LLC, 2021.: CRC Press, 2021. http://dx.doi.org/10.1201/9781003013853-5.

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Sriram, Vadlamannati, Vipin Shukla, and Soumitra Biswas. "Metal Powder Based Additive Manufacturing Technologies—Business Forecast." In 3D Printing and Additive Manufacturing Technologies, 105–18. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-13-0305-0_10.

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Badini, C., and E. Padovano. "Powder Bed Fusion." In High Resolution Manufacturing from 2D to 3D/4D Printing, 81–103. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-13779-2_4.

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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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Verma, R., and G. Kaushal. "State of the Art of Powder Bed Fusion Additive Manufacturing: A Review." In 3D Printing and Additive Manufacturing Technologies, 269–79. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-13-0305-0_23.

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Kooijman, Wessel, and Julian Quodbach. "Powder Bed Fusion 3D Printing in Drug Delivery." In AAPS Introductions in the Pharmaceutical Sciences, 233–56. Cham: Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-34119-9_11.

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Gupta, Priya, Anshul Yadav, Arvind Kumar, and Niraj Sinha. "Modelling of Heat Transfer in Powder Bed Based Additive Manufacturing Process Using Lattice Boltzmann Method." In 3D Printing and Additive Manufacturing Technologies, 83–94. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-13-0305-0_8.

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Conference papers on the topic "3D powder printing"

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Lyckfeldt, Ola. "Metal Powder Characterization for 3D Printing." In Proceedings of the 4M/ICOMM2015 Conference. Singapore: Research Publishing Services, 2015. http://dx.doi.org/10.3850/978-981-09-4609-8_142.

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Zhang, J. S., Y. T. Yang, Z. K. Qin, J. J. Luo, W. Gao, and S. L. Wei. "Research Progress of the Modified Wood Powder for 3D printing." In 2016 4th International Conference on Mechanical Materials and Manufacturing Engineering. Paris, France: Atlantis Press, 2016. http://dx.doi.org/10.2991/mmme-16.2016.217.

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Chao, Tzu-Han, and Chuan-Chieh Liao. "Degassing of Medical Powder Plastics in Fused Deposition 3D Printing." In IEEE ICEIB 2023. Basel Switzerland: MDPI, 2023. http://dx.doi.org/10.3390/engproc2023038069.

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Liao, Chao-Yaug, Po-Lun Wu, and Chao-Yu Lee. "Customized PEEK Implants With Microporous and Surface Modification Using 3D Printing." In ASME 2019 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/detc2019-97117.

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Abstract Polyetheretherketone (PEEK) is a high-performance, semi-crystalline thermal polymer with medical advantages such as biocompatibility and radiolucency. PEEK has an elastic modulus comparable to that of human cortical bone, so it can effectively reduce the stress shielding effect caused by the mismatch between the mechanical properties of an implant and human bone tissue. However, PEEK is biologically inert, and its use typically relies on a variety of surface modification methods, such as surface coatings of bio-ceramic materials, enhancing the surface bioactivity, and osseointegration. Compared to thermal spray or plasma spray technologies, the cold spray is carried out at relatively low temperatures, retaining the original properties of the material. This research establishes an open-source three-dimensional printer compatible with PEEK and also develops a powder-spray module based on the cold spray technology that can coat the surfaces of PEEK printings with hydroxyapatite (HA) to improve its bioactivity. This paper discusses the best parameter selection for PEEK printing, a thermal history analysis of the printing process, and the adhesion of HA powder coated on PEEK specimens with different porosities. Finally, the PEEK implant is printed to measure its performance under a vertical load.
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Cabezas, L., C. Berger, E. Jiménez-Piqué, J. Pötschke, and L. Llanes. "Influence Of Printing Direction On The Mechanical Properties At Different Length Scales For WC-Co Samples Consolidated By Binder Jetting 3D Printing." In World Powder Metallurgy 2022 Congress & Exhibition. EPMA, 2022. http://dx.doi.org/10.59499/wp225371462.

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Additive Manufacturing (AM) is rapidly growing as a revolutionary technique. It provides an interesting ability to produce complex geometries, a key feature for enhancing performance and widening application fields of hardmetal components. Within this context, all the samples produced by AM [AMed] are expected to exhibit characteristics linked to the shaping route followed, which are also vital for defining their mechanical integrity. This work aims to study the correlation of the printing direction to the final microstructure, mechanical properties and layer assemblage at different length scales for a 12%wtCo–WC grade hardmetals of medium/coarse grain size consolidated by binder jetting 3D printing and subsequent sintering. Vickers macro- and micro-hardness as well as reciprocal scratch tests are conducted. The results are analysed and discussed in terms of printing orientation effects on microstructural variability, mechanical response, intrinsic physical behaviour of the material and feedstock used.
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Lai, Ling-Feng, Deng-Maw Lu, Kuei-Shu Hsu, and Jian-Ming Lu. "A Study of Nanoscale Vanadium Powder Applied on 3D Printing Process." In 2019 IEEE 2nd International Conference on Knowledge Innovation and Invention (ICKII). IEEE, 2019. http://dx.doi.org/10.1109/ickii46306.2019.9042646.

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Sun, Kan, Yongjia Wu, Huan Qi, Zhiwei Wu, and Lei Zuo. "Direct Energy Deposition 3D Printing of Thermoelectric Materials: Simulation and Experiments." In ASME 2019 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/detc2019-98396.

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Abstract The thermoelectric material can directly convert energy between thermal and electric without involving any moving parts. Due to the limitation in geometry and efficiency of fabricating the thermoelectric modules in conventional methods, additive manufacturing is now becoming a promising solution. Direct Energy Deposition (DED) is superior for its large dimension limitation, fast processing speed, and independence from any powder bed. A physical model of DED fabrication with magnesium silicide (Mg2Si) powder was developed, and validation experiments were conducted. In the model and the experiments, a set of parameters and settings, including laser power, scanning speed, material feeding rate, and so on, were applied to investigate their influences on the products and to validate the simulation. The result of this research can give a reference for the further attempt of DED thermoelectric fabrication.
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Maniewski, Pawel, Clarissa M. Harvey, Taras Oriekhov, Korbinian Mühlberger, Martin Brunzell, Fredik Laurell, and Michael Fokine. "Laser fabricated optical fibers with 3D printed cores." In CLEO: Science and Innovations. Washington, D.C.: Optica Publishing Group, 2022. http://dx.doi.org/10.1364/cleo_si.2022.sth4p.4.

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We utilized a powder-based, 3D printing technique for prototyping optical fibers. Co-doped silica rods were printed using sub-micron powders with various compositions. The rods were sleeved and drawn into fibers. Ti/Al/Er-co-doped fibers are demonstrated.
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Malkawi, Ameen, Satya Ganti, Zahra Aleid, Hussain Sharrofna, Naeem Minhas, and Nicholas Barta. "Considerations and challenges of qualifying a metal powder bed fusion 3D printing process." In Abu Dhabi International Petroleum Exhibition & Conference. SPE, 2021. http://dx.doi.org/10.2118/207628-ms.

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Abstract This paper discusses the considerations taken into account before printing additively manufactured (AM) parts, the challenges faced during the printing process, and the standards, methods, and techniques by which the parts are qualified for use. We discuss the four major categories of AM powder bed fusion (PBF) qualification process namely feedstock qualification, machine and process qualification, material qualification, and part qualification. We discuss what each of these qualification processes entails and provide suggestions where appropriate. In this paper, the activity and direction within the international standards community to help drive the widespread adoption of AM technology in various industries is also discussed.
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Martin, John D. "Exploring Additive Manufacturing Processes for Direct 3D Printing of Copper Induction Coils." In ASME 2017 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/imece2017-71685.

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A number of additive manufacturing processes were analyzed and compared in regards to the direct 3D printing of copper induction coils. The purpose of this study was to narrow in on 3D printing technologies that would best be suited for the manufacture of copper inductions coils. The main focus of the study was to look at how all the available additive processes could specifically be successful at creating parts made of copper pure enough to effectively conduct electricity and also geometries complex enough to meet the demands of various induction coil designs. The results of this study led to three main categories of additive manufacturing that were deemed good choices for producing copper induction coils, these included: powder bed fusion, sheet lamination, and directed energy deposition. Specific processes identified within these categories were powder bed fusion using electron beam melting and laser melting; ultrasonic additive manufacturing; and directed energy deposition utilizing laser melting and electron beam melting using both wire and powder material delivery systems. Also discussed was additional benefits that using 3D printing technology could provide beyond the physical manufacturing portion by opening doors for coupling with computer aided drafting (CAD) and computer aided engineering (CAE) software in order to create a seamless design-to-production process.
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Reports on the topic "3D powder printing"

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Ovalle, Samuel, E. Viamontes, and Tony Thomas. Optimization of DLP 3D Printed Ceramic Parts. Florida International University, October 2021. http://dx.doi.org/10.25148/mmeurs.009776.

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Digital Light Processing (DLP) 3D printing allows for the creation of parts with advanced engineering materials and geometries difficult to produce through conventional manufacturing techniques. Photosensitive resin monomers are activated with a UV-producing LCD screen to polymerize, layer by layer, forming the desired part. With the right mixture of photosensitive resin and advanced engineering powder material, useful engineering-grade parts can be produced. The Bison 1000 is a research-grade DLP printer that permits the user to change many parameters, in order to discover an optimal method for producing 3D parts of any material of interest. In this presentation, the process parameter optimization and their influence on the 3D printed parts through DLP technique will be discussed. The presentation is focused on developing 3D printable slurry, printing of complex ceramic lattice structures, as well as post heat treatment of these DLP-produced parts.
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Kennedy, Alan, Mark Ballentine, Andrew McQueen, Christopher Griggs, Arit Das, and Michael Bortner. Environmental applications of 3D printing polymer composites for dredging operations. Engineer Research and Development Center (U.S.), January 2021. http://dx.doi.org/10.21079/11681/39341.

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This Dredging Operations Environmental Research (DOER) technical note disseminates novel methods to monitor and reduce contaminant mobility and bioavailability in water, sediments, and soils. These method advancements are enabled by additive manufacturing (i.e., three-dimensional [3D] printing) to deploy and retrieve materials that adsorb contaminants that are traditionally applied as unbound powders. Examples of sorbents added as amendments for remediation of contaminated sediments include activated carbon, biochar, biopolymers, zeolite, and sand caps. Figure 1 provides examples of sorbent and photocatalytic particles successfully compounded and 3D printed using polylactic acid as a binder. Additional adsorptive materials may be applicable and photocatalytic materials (Friedmann et al. 2019) may be applied to degrade contaminants of concern into less hazardous forms. This technical note further describes opportunities for U.S. Army Corps of Engineers (USACE) project managers and the water and sediment resource management community to apply 3D printing of polymers containing adsorptive filler materials as a prototyping tool and as an on-site, on-demand manufacturing capability to remediate and monitor contaminants in the environment. This research was funded by DOER project 19-13, titled “3D Printed Design for Remediation and Monitoring of Dredged Material.”
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3D printing with metal powders: health and safety questions to ask. U.S. Department of Health and Human Services, Public Health Service, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, March 2020. http://dx.doi.org/10.26616/nioshpub2020114.

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