Relevant bibliographies by topics / Extrusion-based 3 D printing

Academic literature on the topic 'Extrusion-based 3 D printing'

Author: Grafiati
Published: 10 December 2022
Last updated: 28 January 2023

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Journal articles on the topic "Extrusion-based 3 D printing"

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Markovsky, P. E., O. M. Ivasishin, D. G. Savvakin, O. O. Stasiuk, V. I. Bondarchuk, D. V. Oryshych, D. V. Kovalchuk, S. H. Sedov, V. A. Golub, and V. V. Buznytskyi. "Titanium-Based Layered Armour Elements Manufactured with 3$D$-Printing Approach." METALLOFIZIKA I NOVEISHIE TEKHNOLOGII 44, no. 10 (December 13, 2022): 1361–75. http://dx.doi.org/10.15407/mfint.44.10.1361.

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Shang, Jianzhong, Xin Li, Zhuo Wang, Rong Wang, and Hong Zhu. "Rheological and printable behavior of resin – class materials for 3D printing applications." Rapid Prototyping Journal 25, no. 5 (June 10, 2019): 801–8. http://dx.doi.org/10.1108/rpj-11-2016-0183.

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Purpose This study aims to investigate rheological and extrusion behavior of thermosetting epoxy resins, which to find the universal property and printing parameters for extrusion-based rapid prototyping applications. Design/methodology/approach The thickener proportion greatly influences its viscosity and rheological behavior and therefore plays an important role in the shape of the cross-section of the extrudate. Findings A pseudoplastic (shear-thinning) is a basic requirement for obtaining extruded lines with plump cross-sections. In addition to the effects of the rheological behavior of the composite, shape maintenance and its wettability on the substrate, the cross-sectional geometry of the extrudate is also strongly affected by printing process parameters including the extrusion nozzle height, nozzle moving speed, extrusion rate and critical nozzle height. Proper combinations of these process parameters are necessary to obtain single-line extrudates with plump cross-sections and 3-D objects with dimensional accuracy, uniform wall thickness, good wall uprightness and no wall slumping. Formulas and procedures for determining these extrusion parameters are proposed and demonstrated in experiments. Originality/value The results obtained have been explained in terms of the interactions among the rheological properties of the composite, the shear rate imposed on the composite during extrusion, the wettability of the composite on the substrate and the shape maintenance of the composite during extrusion.
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Thakkar, Rishi, Amit Raviraj Pillai, Jiaxiang Zhang, Yu Zhang, Vineet Kulkarni, and Mohammed Maniruzzaman. "Novel On-Demand 3-Dimensional (3-D) Printed Tablets Using Fill Density as an Effective Release-Controlling Tool." Polymers 12, no. 9 (August 20, 2020): 1872. http://dx.doi.org/10.3390/polym12091872.

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This research demonstrates the use of fill density as an effective tool for controlling the drug release without changing the formulation composition. The merger of hot-melt extrusion (HME) with fused deposition modeling (FDM)-based 3-dimensional (3-D) printing processes over the last decade has directed pharmaceutical research towards the possibility of printing personalized medication. One key aspect of printing patient-specific dosage forms is controlling the release dynamics based on the patient’s needs. The purpose of this research was to understand the impact of fill density and interrelate it with the release of a poorly water-soluble, weakly acidic, active pharmaceutical ingredient (API) from a hydroxypropyl methylcellulose acetate succinate (HPMC-AS) matrix, both mathematically and experimentally. Amorphous solid dispersions (ASDs) of ibuprofen with three grades of AquaSolveTM HPMC-AS (HG, MG, and LG) were developed using an HME process and evaluated using solid-state characterization techniques. Differential scanning calorimetry (DSC), powder X-ray diffraction (pXRD), and polarized light microscopy (PLM) confirmed the amorphous state of the drug in both polymeric filaments and 3D printed tablets. The suitability of the manufactured filaments for FDM processes was investigated using texture analysis (TA) which showed robust mechanical properties of the developed filament compositions. Using FDM, tablets with different fill densities (20–80%) and identical dimensions were printed for each polymer. In vitro pH shift dissolution studies revealed that the fill density has a significant impact (F(11, 24) = 15,271.147, p < 0.0001) and a strong negative correlation (r > −0.99; p < 0.0001) with the release performance, where 20% infill demonstrated the fastest and most complete release, whereas 80% infill depicted a more controlled release. The results obtained from this research can be used to develop a robust formulation strategy to control the drug release from 3D printed dosage forms as a function of fill density.
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Momenzadeh, Niknam, Hadi Miyanaji, Daniel Allen Porter, and Thomas Austin Berfield. "Polyvinylidene fluoride (PVDF) as a feedstock for material extrusion additive manufacturing." Rapid Prototyping Journal 26, no. 1 (January 6, 2020): 156–63. http://dx.doi.org/10.1108/rpj-08-2018-0203.

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Purpose This study aims to investigate the material extrusion additive manufacturing (MEAM) deposition parameters for creating viable 3-D printed polyvinylidene fluoride (PVDF) structures with a balanced mix of mechanical and electrical properties. Design/methodology/approach Different combinations of deposition conditions are tested, and the influence of these parameters on the final dimensional accuracy, semi-crystalline phase microstructure and effective mechanical strength of MEAM homopolymer PVDF printed parts is experimentally assessed. Considering printed part integrity, appearance, print time and dimensional accuracy, MEAM parameters for PVDF are suggested. Findings A range of viable printing parameters for MEAM fabricated PVDF Kynar 740 objects of different heights and in-plane length dimensions was determined. For PVDF structures printed under the suggested conditions, the mechanical response and the microstructure development related to Piezoelectric response are reported. Originality/value This research first reports on a range of parameters that have been confirmed to facilitate effective MEAM printing of 3-D PVDF objects, presents effects of the individual parameters and gives the mechanical and microstructure properties of PVDF structures fabricated under the suggested deposition conditions.
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Talyosef, Orly. "Perspectives on BIM-Based 3D Printing for Sustainable Buildings." Architext 9 (2021): 36–52. http://dx.doi.org/10.26351/architext/9/3.

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Three-dimensional (3D) printing, also called additive manufacture (AM), is a novel, automated method of printing a structure layer-by-layer directly from a 3D digital design model. Its potential ability to build complex shapes in a less costly and more sustainable manner may revolutionize the construction industry. There are three main 3D printing techniques: (a) contour crafting; (b) concrete printing, and (c) D-shape. As a disruptive technology, 3D printing creates a new market and value network, thus disturbing the established market. Building information modeling (BIM) is a comprehensive management approach encompassing the entire life cycle of the architecture and construction (A&C) process, including architectural planning, geometrical data, scheduling, material, equipment, resource and manufacturing data, and post-construction facility management. By maintaining safety and productivity in large-scale digital processes, BIM is critical to 3D printing’s success in construction. Integrating BIM and 3D printing techniques into A&C can potentially lead to an ecological architectural process that reduces waste and energy inefficiency, and prevents injuries and fatalities on construction sites, while increasing productivity and quality. This paper examines BIM-based 3D printing of sustainable buildings, which may revolutionize the construction industry and contribute to a sustainable environment
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Adumitroaie, Adi, Fedor Antonov, Aleksey Khaziev, Andrey Azarov, Mikhail Golubev, and Valery V. Vasiliev. "Novel Continuous Fiber Bi-Matrix Composite 3-D Printing Technology." Materials 12, no. 18 (September 17, 2019): 3011. http://dx.doi.org/10.3390/ma12183011.

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A new paradigm in continuous fiber-reinforced polymer fused filament fabrication based on a thermoset-thermoplastic bi-matrix material system is proposed and proved. This totally new 3-D printing concept has the potential to overcome the drawbacks and to combine the advantages of separate thermoset and thermoplastic-based, fused filament fabrication methods and to advance continuous fiber-reinforced polymer 3-D printing toward higher mechanical performances of 3-D printed parts. The novel bi-matrix 3-D printing method and preliminary results related to the 3-D printed composite microstructure and performances are reported.
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Sharke, Paul. "How Practical is 3-D Metal Printing?" Mechanical Engineering 139, no. 10 (October 1, 2017): 44–49. http://dx.doi.org/10.1115/1.2017-oct-3.

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This article explores the application of 3D printing technology in cost-sensitive industries such as consumer products and power systems. Metal printing offers advantages such as the ability to reduce parts count, assembly time, and weight while creating complex internal and external geometries that could not be made any other way to manufacturers in almost every industry. 3D design also makes it possible to customize medical and dental implants for each patient. Industrial product designer Keith Handy used the flexibility of 3D printing to redesign the system. Instead of putting the device above the chain, he built a tunnel-like part that the chain could pass through. Euro-K, a Berlin-based firm that develops small energy converters, created a burner that could do both. 3D printing enabled Euro-K to optimize the burner’s geometry to handle gaseous fuels and difficult-to-burn liquids like fuel oils, a byproduct of alcohol distillation, while reducing size. The article concludes that as new competitors enter the 3D printing arena, systems will grow better, faster, and less expensive. In addition, most important of all, engineers will be standing by with lots of new and surprising ways to take advantage of 3D metal technology
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Zhao, Chenfei, Jun Wang, and Lini Lu. "Preparation and application of water-based nano-silver conductive ink in paper-based 3D printing." Rapid Prototyping Journal 28, no. 4 (November 1, 2021): 747–55. http://dx.doi.org/10.1108/rpj-05-2020-0112.

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Purpose In flexible electronics applications, organic inks are mostly used for inkjet printing. Three-dimensional (3 D) printing technology has the advantages of low cost, high speed and good precision in modern electronic printing. The purpose of this study is to solve the high cost of traditional printing and the pollution emissions of organic ink. It is necessary to develop a water-based conductive ink that is easily degradable and can be 3 D printed. A nano-silver ink printed circuit pattern with high precision, high conductivity and good mechanical properties is a promising strategy. Design/methodology/approach The researched nano-silver conductive ink is mainly composed of silver nanoparticles and resin. The effect of adding methyl cellulose on the ink was also explored. A simple 3 D circuit pattern was printed on photographic paper. The line width, line length, line thickness and conductivity of the printed circuit were tested. The influence of sintering temperature and sintering time on pattern resistivity was studied. The relationship between circuit pattern bending performance and electrical conductivity is analyzed. Findings The experimental results show that the ink has the characteristics of low silver content and good environmental protection effect. The printing feasibility of 3 D printing circuit patterns on paper substrates was confirmed. The best printing temperature is 160°C–180°C, and the best sintering time is 30 min. The circuit pattern can be folded 120°, and the cycle is folded more than 60 times. The minimum resistivity of the circuit pattern is 6.07 µΩ·cm. Methyl cellulose can control the viscosity of the ink. The mechanical properties of the pattern have been improved. The printing method of 3 D printing can significantly reduce the sintering time and temperature of the conductive ink. These findings may provide innovation for the flexible electronics industry and pave the way for alternatives to cost-effective solutions. Originality/value In this study, direct ink writing technology was used to print circuit patterns on paper substrates. This process is simple and convenient and can control the thickness of the ink layer. The ink material is nonpolluting to the environment. Nano-silver ink has suitable viscosity and pH value. It can meet the requirements of pneumatic 3 D printers. The method has the characteristics of simple process, fast forming, low cost and high environmental friendliness.
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Zhao, Mengran, Shitao Zhu, Di Hu, Huilin Huang, Xiaoming Chen, Cheng Guo, Juan Chen, and Anxue Zhang. "3-D Printing Disordered-Cavity-Based Metaimager for Coincidence Imaging." IEEE Microwave and Wireless Components Letters 31, no. 6 (June 2021): 620–23. http://dx.doi.org/10.1109/lmwc.2021.3070564.

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Nilsiam, Yuenyong, Paul Sanders, and Joshua Pearce. "Applications of Open Source GMAW-Based Metal 3-D Printing." Journal of Manufacturing and Materials Processing 2, no. 1 (March 13, 2018): 18. http://dx.doi.org/10.3390/jmmp2010018.

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Dissertations / Theses on the topic "Extrusion-based 3 D printing"

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Koehler, Karen E. "Examining the Conceptual Understandings of Geoscience Concepts of Students with Visual Impairments: Implications of 3-D Printing." The Ohio State University, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=osu1494273823844707.

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Jin, Minde [Verfasser], and Hans-Werner [Akademischer Betreuer] Schmidt. "Material development for extrusion-based 3D printing / Minde Jin ; Betreuer: Hans-Werner Schmidt." Bayreuth : Universität Bayreuth, 2020. http://d-nb.info/1216173737/34.

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Nerella, Venkatesh Naidu [Verfasser], Viktor [Gutachter] Mechtcherine, Schutter Geert [Gutachter] de, and Arnaud [Gutachter] Perrot. "Development and characterisation of cement-based materials for extrusion-based 3D-printing / Venkatesh Naidu Nerella ; Gutachter: Viktor Mechtcherine, Geert de Schutter, Arnaud Perrot." Dresden : Technische Universität Dresden, 2020. http://d-nb.info/1226946534/34.

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Thomas, Anita. "Classification of Man-made Urban Structures from Lidar Point Clouds with Applications to Extrusion-based 3-D City Models." The Ohio State University, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=osu1429484410.

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Wang, Zih-Hao, and 王致豪. "Design of High Accuracy 3-D Printing Based on Structured Light Measurement." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/ppscgr.

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碩士
國立臺北科技大學
電子工程系研究所
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With the rapid development of 3D computing technology and its applications, they increase demands for digitized form of the work items. Currently, 3D imaging system is also a wide variety of fields used in film, medicine, games and the like. The 3D scanning system of our study is based on the structured light, which can improve the scanning precision. After calibrating projectors and cameras, a high-resolution CCD camera is employed here to capture clear images. Then, our system applies the structured light method and cooperate a stepper motor to drive a rotating platform to obtain the 3D contour (depth information) of the object. Our system captures images of objects from different angles, and we can get different angles of 3D information called a point cloud. This article uses ICP (Iterative Closest Point) algorithm to stitch the angle of each point cloud for getting the 3D reconstruction of a complete model. Results can be saved in a variety of the point cloud data file formats, providing a wider range of fields to make applications. In the experiments, the use of re-projection error correction to assess the accuracy of the system, the error between the theory and practical work is less than 0.5 pixels. Therefore, the high-precision specification makes the 3D point cloud object information better.
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Book chapters on the topic "Extrusion-based 3 D printing"

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Zhu, Shirley X., Halbig C. Michael, and Singh Mrityunjay. "Additive Manufacturing of Silicon Carbide-Based Ceramics By 3-D Printing Technologies." In Advanced Processing and Manufacturing Technologies for Nanostructured and Multifunctional Materials II, 133–44. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2015. http://dx.doi.org/10.1002/9781119211662.ch15.

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Wang, Xuejie, Wangqun Xiao, and Yimin Song. "The New Product Development Research of Chinese Ming and Qing Dynasty’s Furniture Based on 3-D Printing." In Communications in Computer and Information Science, 444–49. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-21380-4_75.

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Hospodiuk, Monika, Kazim Kerim Moncal, Madhuri Dey, and Ibrahim T. Ozbolat. "Extrusion-Based Biofabrication in Tissue Engineering and Regenerative Medicine." In 3D Printing and Biofabrication, 255–81. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-45444-3_10.

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Hospodiuk, Monika, Kazim Kerim Moncal, Madhuri Dey, and Ibrahim T. Ozbolat. "Extrusion-Based Biofabrication in Tissue Engineering and Regenerative Medicine." In 3D Printing and Biofabrication, 1–27. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-40498-1_10-1.

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Jayathilakage, Roshan I., Pathmanathan Rajeev, and Jay Sanjayan. "Predication of Strength-Based Failure in Extrusion-Based 3D Concrete Printing." In RILEM Bookseries, 391–99. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-22566-7_45.

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Chen, Yu, Fred Veer, Oguzhan Copuroglu, and Erik Schlangen. "Feasibility of Using Low CO2 Concrete Alternatives in Extrusion-Based 3D Concrete Printing." In RILEM Bookseries, 269–76. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-99519-9_25.

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Rusike, Rutendo, Michael Sataya, Alastair T. M. Marsh, Sergio Cavalaro, Chris Goodier, Susan A. Bernal, and Samuel Adu-Amankwah. "Accelerating Early Age Properties of Ultra-Low Clinker Cements for Extrusion-Based 3D Printing." In RILEM Bookseries, 87–92. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-06116-5_13.

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Huang, Yanhua, Li Yu, Liangkui Jiang, Xiaolei Shi, and Hantang Qin. "3D Printing of Hydrogel-Based Seed Planter for In-Space Seed Nursery." In Lecture Notes in Mechanical Engineering, 56–63. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-18326-3_6.

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AbstractInterest in manufacturing parts using 3D printing became popular across academic and industrial sectors because of its improved reliability and accessibility. With the necessity of self-sustentation, growing plant in space is one of the most popular topics. Carboxymethyl cellulose (CMC) is one of the best candidates for sprouting substrate with 3D printing fabrication as it is non-toxic, biodegradable, and suitable for extrusion-based 3D printing. Soybeans were placed into the designed and printed CMC gel with different orientations. Without visible light, soybeans with hilum facing side had the highest water absorption average comparing those facing up or down. Hydrogel weight dominated the water absorption efficiency. These findings signified that bean orientation affects the sprouting process. This study demonstrates the substrate geometry and seed orientation impacts on germination of soybeans, proposed guidelines for optimizing the sprouting process for high-level edible plants and promoting innovated in-space seed nursery approach.
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Tao, Yaxin, Karel Lesage, Kim Van Tittelboom, Yong Yuan, and Geert De Schutter. "Using Limestone Powder as a Carrier for the Accelerator in Extrusion-Based 3D Concrete Printing." In RILEM Bookseries, 311–17. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-06116-5_46.

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Mengesha, Meron, Albrecht Schmidt, Luise Göbel, and Tom Lahmer. "Numerical Modeling of an Extrusion-Based 3D Concrete Printing Process Considering a Spatially Varying Pseudo-Density Approach." In RILEM Bookseries, 323–32. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-49916-7_33.

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Conference papers on the topic "Extrusion-based 3 D printing"

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Patterson, Albert E., Bhaskar Vajipeyajula, and William R. Norris. "System Architecture and Design Parameters for Extrusion-Based Autonomous Construction Systems." In 2022 International Additive Manufacturing Conference. American Society of Mechanical Engineers, 2022. http://dx.doi.org/10.1115/iam2022-93884.

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Abstract Autonomous construction systems (ACSs) have become a topic of great interest in recent years in a variety of areas, including design, materials science, architecture, space exploration, natural disaster recover, military operations, and others. Several different approaches have been proposed, the most promising (and so far most widely-applied) one being a large-scale system based on additive manufacturing (or 3-D printing) principles, where a concrete- or foam-based material is extruded in layers to produce a structure. This structure may be used as a basic shell around which a useful building, shelter, bridge, extraterrestrial habitat, or other infrastructure can be built or may be able to produce a full building in one operation. This article extracts information about the the major components, sub-systems, and interfaces in these systems from a broad sampling of published literature and uses this information to propose a quasi-general system architecture and identify design opportunities. These models can be used to drive further research efforts on these systems, assist with more agile implementation, and improve the design of large-scale 3-D printing-based systems. This work is a first step in the development of a reliable general system architecture similar to those used in the design of large-scale military and aerospace systems.
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Ayad, Mustafa, Robert Nawrocki, Richard M. Voyles, Junseok Lee, Hyowon Lee, and Daniel Leon-Salas. "NUCLEOs: Toward Rapid-Prototyping of Robotic Materials That Can Sense, Think and Act." In ASME 2018 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/smasis2018-8245.

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Robotic Materials are materials that have sensing, computation and, possibly actuation, distributed throughout the bulk of the material. In such a material, we envision semiconducting polymer based sensing, actuation, and information processing for on-board decision making to be designed, in tandem, with the smart product that will be implemented with the smart material. Prior work in printing polymer semiconductors for sensing and cognition have focused on highly energetic inkjet printing. Alternatively, we are developing liquid polymer extrusion processes to work hand-in-hand with existing solid polymer extrusion processes (such as Fused Deposition Manufacturing - FDM) to simultaneously deposit sensing, computation, actuation and structure. We demonstrate the successful extrusion printing of conductors and capacitors to impedance-match a new, higher-performance organic transistor design that solves the cascading problem of the device previously reported and is more amenable to liquid extrusion printing. Consequently, these printed devices are integrated into a sheet material that is folded into a 3-D, six-legged walking machine with attached electric motor.
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Song, Xuan, and Yong Chen. "Joint Design for 3-D Printing Non-Assembly Mechanisms." In ASME 2012 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/detc2012-71528.

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The layer-based additive manufacturing (AM) processes can directly fabricate sub-systems with multiple components during the building process. Novel applications in robotics and many others have been demonstrated by removing the need of component assembly. However, the AM processes also have inferior accuracy compared to the Computer Numerical Control (CNC) machining process. Hence the joint clearance that can be achieved in a 3D-printed mechanism is large. This would significantly limit the use of AM in directly building movable sub-systems without further assembly operations after the building process. To reduce the joint clearance, we present a novel joint design by considering the fabrication limitation of AM processes. A novel marker structure is developed for various types of joints including cylindrical pin joints. The relation of the marker design and the rotation performance of the 3D-printed joint is modeled. Test cases based on the Stereolithography Apparatus (SLA) process have been performed to verify the effectiveness of the developed joint design. Compared to the traditional pin joint design, the new design can achieve a smaller clearance during rotation while still be able to be fabricated by the SLA process. Consequently its rotation performance can be improved.
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Pan, Shaowu, Shuxiang Guo, Liwei Shi, Yanlin He, Zhe Wang, and Qiang Huang. "A spherical robot based on all programmable SoC and 3-D printing." In 2014 IEEE International Conference on Mechatronics and Automation (ICMA). IEEE, 2014. http://dx.doi.org/10.1109/icma.2014.6885687.

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Tang, Adrian, Nacer Chahat, Emmanuel Decrossas, Goutam Chattopadhyay, and Imran Mehdi. "A 94 GHz multi-casting data-link based on 3-D printing compatible dielectric ribbon interconnects." In 2014 IEEE/MTT-S International Microwave Symposium - MTT 2014. IEEE, 2014. http://dx.doi.org/10.1109/mwsym.2014.6848267.

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Jones, Casey. "Utilizing Measurement Tools to Develop a Shrink Rule for the 3-D Printing Process." In NCSL International Workshop & Symposium. NCSL International, 2016. http://dx.doi.org/10.51843/wsproceedings.2016.18.

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Rapid prototyping, in particular 3-D printing, has quickly grown to be a critical part of the design, inspect, and evaluate process involved in product design. Parts of moderate size may be 3-D printed using various plastic materials like Acrylonitrile Butadiene Styrene (ABS) and nylon, which have quickly replaced the powder-based 3-D printers. These plastic processes utilize relatively inexpensive printers and materials and their popularity has soared as a result. The Purdue Polytechnic campus in Columbus, Indiana, now employs five 3-D printers to supplement its mechanical design, inspection, and validation instruction by also using the tools and resources of an environmentally-controlled metrology lab. The objective of this study is to design, print, and measure various part geometries to determine how closely the 3D printed part dimensions are to the original design. 3D printed parts do shrink as they cool following the printing process. In essence, this is very similar to shrinkage that occurs during the metal casting process and so the goal is identify and create a "shrink rule" for 3D printed plastic parts. There are multiple variables involved in the process including material, nozzle speed of the 3D printer, resolution of the printer, and size of the part among others. These different variables are explored in this study to determine the optimal process for accurate and repeatable 3D printing. A Zeiss Duramax coordinate measuring machine is utilized to perform the dimensional measurements of the parts. Various part orientations on the CMM are also investigated to determine any sensitivity to the measurement process. Results will demonstrate that parts need to be scaled up by 1.1% to 1.3% to accurately account for shrinkage of the material.
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Gonzalez, David, Brittany Newell, Jose Garcia, Lucas Noble, and Trevor Mamer. "3-D Printing of Dielectric Electroactive Polymer Actuators and Characterization of Dielectric Flexible Materials." In ASME 2018 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/smasis2018-8011.

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Dielectric electroactive polymers are materials capable of mechanically adjusting their volume in response to an electrical stimulus. However, currently these materials require multi-step manufacturing processes which are not additive. This paper presents a novel 3D printed flexible dielectric material and characterizes its use as a dielectric electroactive polymer (DEAP) actuator. The 3D printed material was characterized electrically and mechanically and its functionality as a dielectric electroactive polymer actuator was demonstrated. The flexible 3-D printed material demonstrated a high dielectric constant and ideal stress-strain performance in tensile testing making the 3-D printed material ideal for use as a DEAP actuator. The tensile stress-strain properties were measured on samples printed under three different conditions (three printing angles 0°, 45° and 90°). The results demonstrated the flexible material presents different responses depending on the printing angle. Based on these results, it was possible to determine that the active structure needs low pre-strain to perform a visible contractive displacement when voltage is applied to the electrodes. The actuator produced an area expansion of 5.48% in response to a 4.3 kV applied voltage, with an initial pre-strain of 63.21% applied to the dielectric material.
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Martin, Michael J., Paige R. Davis, David F. Bowles, and Marybeth Lima. "Incorporation of Museum-Based Service Learning into Advanced Engineering Electives in Aerospace Engineering and 3-D Printing." In 54th AIAA Aerospace Sciences Meeting. Reston, Virginia: American Institute of Aeronautics and Astronautics, 2016. http://dx.doi.org/10.2514/6.2016-1803.

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Huang, Guan-Long, and Shi-Gang Zhou. "Application of 3-D printing to fabrication of highly-efficient waveguide-based antenna array with integrated monopulse comparator." In 2017 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting. IEEE, 2017. http://dx.doi.org/10.1109/apusncursinrsm.2017.8072663.

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Roy, Sayan, Brian Young, Yi-Hsiang Chang, Benjamin D. Braaten, and Sima Noghanian. "The Effect of Locations on the 3-D Printing Bed Surface for Designing PC-ABS Based RF Circuits." In 2018 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting. IEEE, 2018. http://dx.doi.org/10.1109/apusncursinrsm.2018.8608234.

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Reports on the topic "Extrusion-based 3 D printing"

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Hudson, Tracy D., and Carrie D. Hill. Three-Dimensional (3-D) Plastic Part Extrusion And Conductive Ink Printing For Flexible Electronics. Fort Belvoir, VA: Defense Technical Information Center, April 2012. http://dx.doi.org/10.21236/ada559396.

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Journal articles
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