Relevant bibliographies by topics / Three-dimensional printing – Automatic control

Academic literature on the topic 'Three-dimensional printing – Automatic control'

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

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Journal articles on the topic "Three-dimensional printing – Automatic control"

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Ren, Hongwei, Yongchao Luan, Xingkun Dong, Haijun Zhou, Xin Chen, and Xiaochuan Yu. "Design of Automatic Controller System for Three Axis 3D Printing Platform." Journal of Physics: Conference Series 2095, no. 1 (November 1, 2021): 012050. http://dx.doi.org/10.1088/1742-6596/2095/1/012050.

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Abstract With the development of society and the continuous improvement of the level of automation, automatic three-dimensional work platform is more and more popular, but now the three-dimensional work platform has a single function, and the waste of capacity is a serious problem. Therefore, this paper uses STM32F429 MCU to design a set of replaceable working position of the three axis control platform. The design of the table with replaceable work head, by identifying the ID on the head, change the control mode, enhance the functional diversity of the three-axis platform. In addition, in order to improve the universality of the system, the platform has many external communication interfaces, visual man-machine interface and LAN network communication functions.
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Bao, Neng Sheng, Shi Liang Fei, Xue Jia Huang, Tie Quan Liu, and Jin Huang. "Labview-Based Automatic Four-Axis Positioning Control Air Temperature and Wind Speed Detection Platform for Drying Oven." Advanced Materials Research 718-720 (July 2013): 1547–53. http://dx.doi.org/10.4028/www.scientific.net/amr.718-720.1547.

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The design of domestic drying oven lacked theoretical basis and methods, especially a tool supporting experiments and verifying the results of theoretical research. This paper developed a platform, which can be used to automatically detect multi-point air temperature and wind speed from drying oven nozzle of printing and coating machines. The hardware design of platform achieves a four-axis positioning function by adopt a three-dimensional Cartesian coordinate robot and an additional servo motor. The LabVIEW-based software design of platform achieves many functions, including multi-axis positioning control, data acquisition and processing, data interface and operation interface. This platform contributes to research work for drying oven.
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Aroca, Rafael Vidal, Carlos E. H. Ventura, Igor De Mello, and Tatiana F. P. A. T. Pazelli. "Sequential additive manufacturing: automatic manipulation of 3D printed parts." Rapid Prototyping Journal 23, no. 4 (June 20, 2017): 653–59. http://dx.doi.org/10.1108/rpj-02-2016-0029.

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Purpose This paper aims to present a monitoring system and the usage of a robotic arm to remove finished parts of a three-dimensional (3D) printer build plate, enabling 3D printers to continuously build a sequence of parts. Design/methodology/approach The system relies on a 2-degree of freedom planar manipulator. The moment to remove printed parts from the printer build plate can be determined based on direct communication with the 3D printer control software or using information from a computer vision system that applies background subtraction and Speeded up Robust Features methods. Findings The proposed system automatically detects the end of standard 3D print jobs and controls the robotic arm to remove the part. Research limitations/implications Lighting variation can deteriorate the response of the computer vision system, which can be minimized using a controlled illumination environment. In addition, the printer build plate edges must be free so the parts can slip off the printer build plate when the robot pushes them out. Practical implications The system enables a more practical and automatized usage of 3D printers, reducing the need of human operators. Social implications The proposed system can reduce work hours of laboratory personnel, as there is no need to remove the printed parts manually before another job starts. Originality/value Computer vision system monitors the printing process and the automation system that enables continuous sequential 3D printing of parts. A prototype is described, which can be easily replicated with low cost parts.
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Villalba-Diez, Javier, Daniel Schmidt, Roman Gevers, Joaquín Ordieres-Meré, Martin Buchwitz, and Wanja Wellbrock. "Deep Learning for Industrial Computer Vision Quality Control in the Printing Industry 4.0." Sensors 19, no. 18 (September 15, 2019): 3987. http://dx.doi.org/10.3390/s19183987.

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Rapid and accurate industrial inspection to ensure the highest quality standards at a competitive price is one of the biggest challenges in the manufacturing industry. This paper shows an application of how a Deep Learning soft sensor application can be combined with a high-resolution optical quality control camera to increase the accuracy and reduce the cost of an industrial visual inspection process in the Printing Industry 4.0. During the process of producing gravure cylinders, mistakes like holes in the printing cylinder are inevitable. In order to improve the defect detection performance and reduce quality inspection costs by process automation, this paper proposes a deep neural network (DNN) soft sensor that compares the scanned surface to the used engraving file and performs an automatic quality control process by learning features through exposure to training data. The DNN sensor developed achieved a fully automated classification accuracy rate of 98.4%. Further research aims to use these results to three ends. Firstly, to predict the amount of errors a cylinder has, to further support the human operation by showing the error probability to the operator, and finally to decide autonomously about product quality without human involvement.
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Ozcelik, Adem. "3D Printed Device for Separation of Cells and Particles by Tilted Bulk Acoustic Wave Actuation." Actuators 11, no. 9 (August 31, 2022): 249. http://dx.doi.org/10.3390/act11090249.

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Three-dimensional (3D) printing has been proven to be a reliable manufacturing method for a diverse set of applications in engineering. Simple benchtop tools such as mini centrifuges, automated syringe pumps, and basic-robotic platforms have been successfully printed by basic 3D printers. The field of lab-on-a-chip offers promising functions and convenience for point-of-care diagnostics and rapid disease screening for limited resource settings. In this work, stereolithography (SLA) 3D resin printing is implemented to fabricate a microfluidic device to be used for separation of HeLa cells from smaller polystyrene particles through titled angle standing bulk acoustic wave actuation. The demonstrated device achieved continuous and efficient separation of target cells with over 92% HeLa cell purity and 88% cell recovery rates. Overall, 3D printing is shown to be a viable method for fabrication of microfluidic devices for lab-on-a-chip applications.
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Anikin, P. S., G. M. Shilo, R. A. Kulykovskyi, and D. E. Molochkov. "Automation control system of 3d printing robotic platform with implemented wire + arc welding technology." Electrical Engineering and Power Engineering, no. 4 (December 30, 2020): 35–48. http://dx.doi.org/10.15588/1607-6761-2020-4-4.

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Purpose. Development of the robotic platform automated control system architecture, development of the software control algorithm. Methodology. To implement the algorithm of the control program, computer modeling of thermal regimes in CAE systems is used. The basic parameters of the single layer printing technique were obtained by experimental use of the wire plus arc additive manufacturing (WAAM) technology. Findings. Requirements for manufacturability and printing quality of the manufactured parts were defined in the form of geometric dimensions, surface waviness, parameters of the desired microstructure state, residual stresses, maintaining of the optimal manufacturing speed. Based on the requirements of manufacturability analysis, an algorithm for the control program was developed. Robotic platform automated control system architecture with feedback device for the thermal mode control, parameters of the geometrical form of the manufactured part and weld pool were developed. Three -level hierarchical model, which gives an ability to consider in the process of 3D printing each level individually in terms of welding bead, layer and wall, was developed. The input data for the operation of the automated control system of the robotic platform using the technology of electric arc welding are determined. Basic geometrical parameters and the simple welding bead and the methods of overlapping of two or more beads were shown. Critical differences between ideal and real welding overlapping models were considered for necessity of taking into account whilst generating robot control software. Analysis of the possibilities for the CAE simulation of the three-dimensional printing using wire plus arc additive manufacturing technology is performed to determine the influence of the temperature parameters, mechanical loads, toolpath change, and based on the data obtained, it became possible to determine residual stresses and defects in manufactured parts. Originality. Robotic platform automated control system architecture with feedback device for the control of thermal mode, parameters of the geometrical form of the manufactured part and weld pool was developed. Three-level hierarchical model for the wire plus arc additive manufacturing (WAAM) technology was created. Software control algorithm which provides an opportunity to improve geometrical and mechanical properties of the manufactured parts was developed. Practical value. Development of an automated control system for 3D printing robotic platform with WAAM implemented technology, which will provide an opportunity for increase in the printing accuracy of the manufactured parts and will help to reduce manufacturing time.
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HUSIEV, O. V., and T. D. NIKIFOROVA. "RESEARCH OF THE CONVERTING STAGES FOR THE VOLUME MODEL OF THE PRODUCT INTO THE CONTROL CODE FOR A 3D PRINTER IN THE CONTEXT OF AUTOMATED CONSTRUCTION OF 3D PRINTING TECHNOLOGY." Ukrainian Journal of Civil Engineering and Architecture, no. 4 (October 22, 2022): 38–45. http://dx.doi.org/10.30838/j.bpsacea.2312.250822.38.876.

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Problem statement. The integration of the latest technologies in the field of software at the stages of construction appears as one of the main tasks for designers. Creating objects based on 3D printing technology requires the use of appropriate high-tech solutions. One of these solutions is the analysis of the converting process a three-dimensional model into a control code for 3D printing − it is precisely from this analysis that the degree of construction efficiency for building structures by the 3D printing method depends. The purpose of the article. Based on the analysis of 3D printing concepts and modern software, form a conceptual diagram of the converting stages for the product three-dimensional model into a control code for 3D printers. Determine shortcomings that can complicate the implementation of this process. Conclusions. The working process of 3D printing is complex and requires in-depth knowledge of both the software and hardware of the system as a whole. A detailed study of this issue will further optimize the planning of construction processes, which in turn plays an important role in the overall efficiency of the 3D printing system. The use of 3D computer graphics programs may not include models’ specific features that will be key importance for 3D printing. Surface tessellation done in CAD for modeling often ends up with errors in the *.STL data structure in the form of gaps and holes, resulting in open loops in cross-sections that cannot be fabricated as layers in practice. When converting 3D models to *.STL format automatically, with the help of specialized software packages, you should take the time to thoroughly check the STL format. G-code is the first step towards understanding the digital software control of a 3D printer. It can be generated automatically, which can lead to a large number of errors. At the converting stage of the 3D model into *.STL format and in the direct process of G-code generation, highly qualified interdisciplinary specialists who are able to combine these technologies in practice.
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Sundaram, Subramanian, Melina Skouras, David S. Kim, Louise van den Heuvel, and Wojciech Matusik. "Topology optimization and 3D printing of multimaterial magnetic actuators and displays." Science Advances 5, no. 7 (July 2019): eaaw1160. http://dx.doi.org/10.1126/sciadv.aaw1160.

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Upcoming actuation systems will be required to perform multiple tightly coupled functions analogous to their natural counterparts; e.g., the ability to control displacements and high-resolution appearance simultaneously is necessary for mimicking the camouflage seen in cuttlefish. Creating integrated actuation systems is challenging owing to the combined complexity of generating high-dimensional designs and developing multifunctional materials and their associated fabrication processes. Here, we present a complete toolkit consisting of multiobjective topology optimization (for design synthesis) and multimaterial drop-on-demand three-dimensional printing for fabricating complex actuators (>106 design dimensions). The actuators consist of soft and rigid polymers and a magnetic nanoparticle/polymer composite that responds to a magnetic field. The topology optimizer assigns materials for individual voxels (volume elements) while simultaneously optimizing for physical deflection and high-resolution appearance. Unifying a topology optimization-based design strategy with a multimaterial fabrication process enables the creation of complex actuators and provides a promising route toward automated, goal-driven fabrication.
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Singh, Rajesh, Anita Gehlot, Shaik Vaseem Akram, Lovi Raj Gupta, Manoj Kumar Jena, Chander Prakash, Sunpreet Singh, and Raman Kumar. "Cloud Manufacturing, Internet of Things-Assisted Manufacturing and 3D Printing Technology: Reliable Tools for Sustainable Construction." Sustainability 13, no. 13 (June 30, 2021): 7327. http://dx.doi.org/10.3390/su13137327.

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The United Nations (UN) 2030 agenda on sustainable development goals (SDGs) encourages us to implement sustainable infrastructure and services for confronting challenges such as large energy consumption, solid waste generation, depletion of water resources and emission of greenhouse gases in the construction industry. Therefore, to overcome challenges and establishing sustainable construction, there is a requirement to integrate information technology with innovative manufacturing processes and materials science. Moreover, the wide implementation of three-dimensional printing (3DP) technology in constructing monuments, artistic objects, and residential buildings has gained attention. The integration of the Internet of Things (IoT), cloud manufacturing (CM), and 3DP allows us to digitalize the construction for providing reliable and digitalized features to the users. In this review article, we discuss the opportunities and challenges of implementing the IoT, CM, and 3D printing (3DP) technologies in building constructions for achieving sustainability. The recent convergence research of cloud development and 3D printing (3DP) are being explored in the article by categorizing them into multiple sections including 3D printing resource access technology, 3D printing cloud platform (3D–PCP) service architectures, 3D printing service optimized configuration technology, 3D printing service evaluation technology, and 3D service control and monitoring technology. This paper also examines and analyzes the limitations of existing research and, moreover, the article provides key recommendations such as automation with robotics, predictive analytics in 3DP, eco-friendly 3DP, and 5G technology-based IoT-based CM for future enhancements.
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Pahlevanzadeh, Farnoosh, Mohsen Setayeshmehr, Hamid Reza Bakhsheshi-Rad, Rahmatollah Emadi, Mahshid Kharaziha, S. Ali Poursamar, Ahmad Fauzi Ismail, Safian Sharif, Xiongbiao Chen, and Filippo Berto. "A Review on Antibacterial Biomaterials in Biomedical Applications: From Materials Perspective to Bioinks Design." Polymers 14, no. 11 (May 31, 2022): 2238. http://dx.doi.org/10.3390/polym14112238.

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In tissue engineering, three-dimensional (3D) printing is an emerging approach to producing functioning tissue constructs to repair wounds and repair or replace sick tissue/organs. It allows for precise control of materials and other components in the tissue constructs in an automated way, potentially permitting great throughput production. An ink made using one or multiple biomaterials can be 3D printed into tissue constructs by the printing process; though promising in tissue engineering, the printed constructs have also been reported to have the ability to lead to the emergence of unforeseen illnesses and failure due to biomaterial-related infections. Numerous approaches and/or strategies have been developed to combat biomaterial-related infections, and among them, natural biomaterials, surface treatment of biomaterials, and incorporating inorganic agents have been widely employed for the construct fabrication by 3D printing. Despite various attempts to synthesize and/or optimize the inks for 3D printing, the incidence of infection in the implanted tissue constructs remains one of the most significant issues. For the first time, here we present an overview of inks with antibacterial properties for 3D printing, focusing on the principles and strategies to accomplish biomaterials with anti-infective properties, and the synthesis of metallic ion-containing ink, chitosan-containing inks, and other antibacterial inks. Related discussions regarding the mechanics of biofilm formation and antibacterial performance are also presented, along with future perspectives of the importance of developing printable inks.
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Dissertations / Theses on the topic "Three-dimensional printing – Automatic control"

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Curodeau, Alain. "Three dimensional printing : machine control from CAD model to nozzles." Thesis, Massachusetts Institute of Technology, 1991. http://hdl.handle.net/1721.1/13031.

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Wu, Benjamin M. 1962. "Microstructural control during three dimensional printing of polymeric medical devices." Thesis, Massachusetts Institute of Technology, 1998. http://hdl.handle.net/1721.1/10042.

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Techapiesancharoenkij, Ratchatee 1979. "Bimetallic bars with local control of composition by three-dimensional printing." Thesis, Massachusetts Institute of Technology, 2004. http://hdl.handle.net/1721.1/16626.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 2004.
Includes bibliographical references (p. 106-107).
This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.
Three Dimensional Printing (3DP) is a process that enables the fabrication of geometrically complex parts directly from computer-aided design (CAD) models. The success of 3DP as an alternative manufacturing technology to bulk machining of materials for complex parts has been demonstrated. By proof of concept, 3DP has demonstrated the ability to create parts with Local Control of the Composition (LCC). LCC allows tailoring the material properties in regions of a part for functional purposes. In this work, LCC was studied and demonstrated by fabricating bimetallic bars consisting of two layers of Fe-Ni alloys with different composition and, hence, different thermal expansion properties; the coefficient of thermal expansion (CTE) of Fe-Ni system is sensitive to its composition. Two types of the binder/dopant slurries were made for making the LCC bars. One type consisted of dispersions of Fe₂O₃ particles in water, and the other consisted of dispersion of NiO in water. The LCC bars were successfully made by printing the Fe₂O₃/NiO slurries into Fe-30Ni base powders. After heat treatment to impart strength to the printed bars, the bars were successfully retrieved from unbound powders. The bars, then, were annealed at 1400 ⁰C for 2 hours for sintering and homogenization. The final composition of the base powders were changed accordingly. In the layers on which an Fe₂O₃ slurry was printed, the Fe composition of the layers increased on average to 72wt%. Similarly, the Ni composition of the Ni-enriched layers of the bars increased on average to 33wt%. The densification and local homogenization resulting from reduction and sintering treatments were not satisfactory.
(cont.) The major problem was presumably caused by the oxide residues. The presence of the oxide powders was evident from the microprobe measurement. The oxide residues caused the local compositions to be inhomogeneous. As a result, the compositional profiles showed considerable scatter. Moreover, the residues impeded the sintering rate of the bars; the sintering densities of the bars were as small as 78% of the theoretical density. The resulting bimetallic bars did exhibit bending deflection on uniform heating. However, the bending deflections were much smaller than expected. Evidently, the compositional profiles of the bars critically influence their thermal bending properties. The scatter in the compositional profiles resulted in local variations of CTE in the bars, which degraded the thermal bending properties. A linear elastic model that allows prediction of the deflection as a function of composition profile shows good agreement with the observed deflections in the bimetallic bars with LCC.
by Ratchatee Techapiesancharoenkij.
S.M.
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Khanuja, Satbir S. "Origin and control of anisotropy in three dimensional printing of structural ceramics." Thesis, Massachusetts Institute of Technology, 1996. http://hdl.handle.net/1721.1/11248.

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Yoo, Jaedeok. "Fabrication and microstructural control of advanced ceramic components by three dimensional printing." Thesis, Massachusetts Institute of Technology, 1996. http://hdl.handle.net/1721.1/10602.

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Books on the topic "Three-dimensional printing – Automatic control"

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Ciriaco, Castro Díez, and Jaworski Przemek, eds. Arduino and Kinect projects: Design, build, blow their minds. New York, N.Y: Apress, 2012.

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Melgar, Enrique Ramos. Arduino and Kinect Projects: Design, Build, Blow Their Minds. Berkeley, CA: Apress, 2012.

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Additive Manufacturing Technologies: 3D Printing, Rapid Prototyping, and Direct Digital Manufacturing. Springer, 2014.

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3D printing and CNC fabrication with SketchUp. McGraw-Hill Education TAB, 2016.

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Additive Manufacturing Technologies: 3D Printing, Rapid Prototyping, and Direct Digital Manufacturing. Springer, 2016.

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Additive Manufacturing Technologies: 3D Printing, Rapid Prototyping, and Direct Digital Manufacturing. Springer New York, 2014.

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Gibson, Ian, Brent Stucker, Rosen David, and Mahyar Khorasani. Additive Manufacturing Technologies. Springer International Publishing AG, 2021.

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Gibson, Ian, Brent Stucker, Rosen David, and Mahyar Khorasani. Additive Manufacturing Technologies. Springer International Publishing AG, 2020.

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Fusion 360 for makers: Design your own digital models for 3D printing and CNC fabrication. Maker Media, Inc., 2018.

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Cline, Lydia Sloan. Fusion 360 for Makers: Design Your Own Digital Models for 3D Printing and CNC Fabrication. Make Community, LLC, 2021.

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Book chapters on the topic "Three-dimensional printing – Automatic control"

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Chen, Rongbao, Yanhao Lin, Xudong Fu, and Ning Li. "An Experimental Study on the Reconstruction of Three-Dimensional Temperature Fields in Flames." In 2011 International Conference in Electrics, Communication and Automatic Control Proceedings, 797–802. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-8849-2_100.

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Shephard, Mark S., Saikat Dey, and Marcel K. Georges. "Automatic Meshing of Curved Three—Dimensional Domains: Curving Finite Elements and Curvature-Based Mesh Control." In Modeling, Mesh Generation, and Adaptive Numerical Methods for Partial Differential Equations, 67–96. New York, NY: Springer New York, 1995. http://dx.doi.org/10.1007/978-1-4612-4248-2_5.

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Ramakrishnan, C. V. "Development of a two/three dimensional shape optimization program with solid modelling, semi-automatic mesh generation and adaptive mesh refinement." In Control of Boundaries and Stabilization, 211–30. Berlin, Heidelberg: Springer Berlin Heidelberg, 1989. http://dx.doi.org/10.1007/bfb0043363.

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Kirschmann, Moritz A., Jörg Pierer, Alexander Steinecker, Philipp Schmid, and Arne Erdmann. "Plenoptic Inspection System for Automatic Quality Control of MEMS and Microsystems." In IFIP Advances in Information and Communication Technology, 220–32. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-72632-4_16.

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AbstractOptical quality control of MEMS and microsystems is challenging as these structures are micro-scale and three dimensional. Here we lay out different optical systems that can be used for 3D optical quality control in general and for such structures in particular. We further investigate one of these technologies – plenoptic cameras and characterize them for the described task, showing advantages and disadvantages. Key advantages are a huge increase in depth of field compared to conventional microscope camera systems allowing for fast acquisition of non-flat systems and secondly the resulting total focus images and depth maps. Finally we conclude that these advantages render plenoptic cameras a valuable technology for the application of quality control.
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Thieringer, Florian M., Philipp Honigmann, and Neha Sharma. "Medical Additive Manufacturing in Surgery: Translating Innovation to the Point of Care." In Future of Business and Finance, 359–76. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-99838-7_20.

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AbstractAlongside computed tomography, additive manufacturing (also known as three-dimensional or 3D printing) is a significant MedTech innovation that allows the fabrication of anatomical biomodels, surgical guides, medical/dental devices, and customized implants. Available since the mid-1980s, 3D printing is growing increasingly important in medicine by significantly transforming today’s personalized medicine era. 3D printing of biological tissues will provide a future for many patients, eventually leading to the printing of human organs. Unlike subtractive manufacturing (where the material is removed and 3D objects are formed by cutting, drilling, computer numerical control milling, and machining), the critical driver for the exponential growth of 3D printing in medicine has been the ability to create complex geometric shapes with a high degree of functionality. 3D printing also offers the advantage of developing highly customized solutions for patients that cannot be achieved by any other manufacturing technology.
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Nakamura, T., T. Kiriyama, M. Fukuda, Y. Takagi, T. Maeda, M. Fukukawa, S. Nagasaki, et al. "Development of three dimensional positioning automatic control asphalt paver." In Automation and Robotics in Construction Xi, 47–54. Elsevier, 1994. http://dx.doi.org/10.1016/b978-0-444-82044-0.50011-4.

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"Research on three-dimensional reconstruction of heart using serial sections based on computer 3D printing." In Computing, Control, Information and Education Engineering, 581–84. CRC Press, 2015. http://dx.doi.org/10.1201/b18828-125.

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Randermann, Marcel, Timo Hinrichs, and Roland Jochem. "Development of a Quality Gate Reference Model for FDM Processes." In Quality Control [Working Title]. IntechOpen, 2022. http://dx.doi.org/10.5772/intechopen.104176.

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Additive manufacturing (AM) enables industries to accomplish mass customization by creating complex products in small batches. For this purpose, fused deposition modeling (FDM) is widely used in 3D printing where the material is applied layer-by-layer from a digital model to form a three-dimensional object. There still exist problems in FDM processes regarding the failure rate of printed parts. Failures vary from deformed geometry, clogged nozzles, and dimensional inaccuracies to small parts not being printed that may be attributed to various process steps (e.g., poor quality CAD models, converting issues, overheating, poor quality filament, etc.). The majority of these defects are preventable and are caused by imprudent try-and-error print processes and troubleshooting quality control. The aim of this chapter is to propose a quality gate reference process with defined requirement criteria to prevent the occurrence of defects. The framework shall be applied in quality control and in-situ process monitoring to enhance overall manufacturing quality.
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Pavlovska, Ilona, Lāsma Akūlova, Anna Lece, Žanna Martinsone, Linda Paegle, Aneka Kļaviņa, Klinta Sprūdža, and Inese Mārtiņsone. "Assessment of Occupational Exposures in the 3D Printing: Current Status and Future Prospects." In Advances in 3D Printing [Working Title]. IntechOpen, 2023. http://dx.doi.org/10.5772/intechopen.109465.

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3D (three-dimensional) printing technologies are widespread and rapidly evolving, creating new specific working conditions, and their importance has been highlighted by increasing publications in recent years. The report provides a compilation of current information on 3D technologies, materials, and measurements, considering the determination of the potential actual exposure dose of chemicals through airborne inhalation and dermal exposure, including workers’ exhaled breath condensate and urine data. Noninvasive assessment methods are becoming increasingly popular, as they are painless, easy to perform, and inexpensive. Investigation of biomarkers reflecting pulmonary inflammation and local and systemic oxidative stress in exhaled breath, exhaled breath condensate, and urine are among them. It is also important to consider the occupational health and safety risks associated with the use of various new materials in 3D printing, which are associated with skin irritation and sensitivity risks. Therefore, EDI (estimated daily intake) calculations for assessment of the potential occupational health risk purposes via inhalation and dermal exposure are critical in future. The assessment of occupational exposure and health risks of 3D printing processes is essential for the proper identification, control, and prevention of working conditions, also for the diagnosis and monitoring of occupational diseases among workers to improve public health and well-being in general.
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Qiao, Xueliang, Guangyu Qiao, Mingke Li, Suyao Wei, Xiyan Wang, and Yuanqing Wang. "Deep Application of BIM Visualization Intelligent Technology in Construction." In Advances in Transdisciplinary Engineering. IOS Press, 2022. http://dx.doi.org/10.3233/atde220901.

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At present, the application of domestic BIM technology is basically concentrated on the integration of three-dimensional visualization of buildings, progress simulation and comprehensive arrangement of pipes. In order to further explore the in-depth application of BIM technology in the fields of traditional construction engineering, restoration of ancient buildings and 3D printing, this paper integrates key information such as 3D scanning, progress simulation, load debugging, business management and control, and refined management through the BIM model to help the construction process perform simulation to provide core data in time such as accurate resource consumption, technical requirements, and other important links in the construction process such as materials, business, schedule, production, etc, and to improve communication and decision-making efficiency, thereby saving time and costs and improving project management quality.
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Conference papers on the topic "Three-dimensional printing – Automatic control"

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Chen Xinwei, Liu Jingtai, Sun Lei, Wang Hongpeng, Lin Sen, and Shi Tao. "Ink drop and color distortion modeling in three dimensional printing." In 2010 8th World Congress on Intelligent Control and Automation (WCICA 2010). IEEE, 2010. http://dx.doi.org/10.1109/wcica.2010.5555351.

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KUMAR, DINESH, BALKISHAN PAL, BALWINDER KUMAR, and VIKAS BHARDWAJ. "A REVIEW OF FUTURE TRENDS IN 3-D PRINTING OF ARMAMENT AND EXPLOSIVE DEVICES." In 32ND INTERNATIONAL SYMPOSIUM ON BALLISTICS. Destech Publications, Inc., 2022. http://dx.doi.org/10.12783/ballistics22/36044.

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Advances in Computer aided design (CAD), modeling and Three-dimensional (3D) printing has led to paradigm shift in development of innovative and miniaturized explosive devices for armament applications. In conventional techniques, explosives are either pressed or casted and machined to required geometry. These conventional processes are mostly manual and monotonous; require high-cost tooling and the lead-time from concept to product is high. 3D printing is an automated additive manufacturing process in which the material is deposited layer-by-layer to build physical part with any intricate geometry and profile, from the CAD model of the part. 3D printing of explosive devices offers advantages of computer aided design techniques, automation, direct physical part fabrication, low lead-time, low cost and any geometrical shape can be printed. It also offers advantage of printing explosive parts in the battlefields. In this paper, along with the detailed review of future trends in 3D printing of armament and explosive devices, a case study of 3D printing of plastic bullets in Acrylonitrile Butadiene Styrene (ABS) material is presented. The plastic bullets are used in low intensity conflicts and riot control. The experimental firing trials were conducted using standard AK- 47 gun firing on Gelatin target blocks placed at 30 m distance from the muzzle of the gun. The trials showed performance of ABS bullets in terms of lethality and velocity drop comparable to existing plastic bullets made of Nylon-66 manufactured by injection molding process. 3D printed ABS bullets have advantage of batch-to-batch repeatability, high accuracy. 3D printing is revolutionizing the way armament and explosive devices are manufactured, performance improvement and miniaturization.
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Wang, Chengyang, Qudus Hamid, Jessica Snyder, Halim Ayan, and Wei Sun. "A Novel Automation System for Microplasma Surface Patterning and Biologics Printing." In ASME/ISCIE 2012 International Symposium on Flexible Automation. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/isfa2012-7106.

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In the field of tissue engineering, regenerative medicine, and life sciences, the topological biochemical cues regulate cell attachment and alignment within the construct. In a native biological system, these cues are inherent. However, most of the biological materials utilized in the fabrication of tissue construct do not possess the appropriate cues required to develop an architecture to support the cell attachment and growth of a functional tissue Therefore the ability to manipulate structural and biochemical cues plays an important role in biofabrication process, and it is a key element to evaluate a engineered cellular model. Plasma surface functionalization and biologics printing have been investigated and validated as two effective techniques to guide cell functions by creating microenvironments. The objective of this work is to develop a novel dual functional platform for freeform microplasma surface patterning and biologics printing process as well as to study the underlying process science and the process induced cellular functions. The microplasma jet system was assembled by two parts. The upper part is a plastic NPT connector surrounding an extending high voltage copper electrode. The lower part is a dielectric Pasteur pipette connected with a capillary micro-scale nozzle tip. The lower part is interchangeable and the diameter of the tip ranges from 50 μm to 1 mm. With up to 20 kV output capability, a high-voltage power supply was connected to the copper electrode through the NPT connector which also served as gas inlet. A high-voltage probe linked to an oscilloscope is used to monitor the real time voltage. The whole microplasma jet system was set up on automation platform, which allows X-Y-Z motion control and switch control. This integrated system operates at atmospheric pressured environment. All tissue constructs could be fabricated at room temperature without the use of a mask. Clear polystyrene microplates were used as plasma treatment substrates. After O2-He mixed microplasma treatment, 7F2 mouse osteoblastic cells were cultured in the microplates for cell biology studies. We demonstrated the capability of our dual functional platform by applying microplasma in the polystyrene wells and control group (without any treatment) in other wells of the same microplate substrate. The results show that the microplasma treatment changed the surface properties and improved cell attachment. This dual functional freeform system allows for surface patterning and printing of cells, proteins, growth factors, etc. to fabricate three-dimensional tissue constructs.
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Resnick, Alex, Jungkyu Park, Biya Haile, and Eduardo B. Farfán. "Three-Dimensional Printing of Carbon Nanostructures." In ASME 2019 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/imece2019-11411.

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Abstract Multi-layered carbon nanostructures are the next leap for many advanced consumer and industrial applications that require both high strength and uniquely high electrical and thermal properties. Applications of three-dimensional (3D) carbon nanostructures have already been theorized to include wearable technology, processor chip heat transfer material, and flexible electronics. 3D carbon nanostructures appear in the form of carbon nanotubes (CNTs) and layered graphene tiers, however, many structures previously examined have been limited to one or two graphene layers or non-repeatable structured patterns. Many of the electrical and thermal properties of CNTs are still being investigated, but the initial studies demonstrate promising results such as the thermal conductivity ranging in the thousands W/m-K. Developing new ways to fabricate these structures at a reasonable cost has become a primary focus for graphene-based research. In this study, 3D carbon nanostructure samples are 3D printed using laser lithography, then a series of high temperature furnace burns and Nickel Chemical Vapor Deposition (CVD) is utilized to leave a previously multi-species structure as a solely carbon-species structure with mostly carbon sp-2 bonds. CVD has proven to be a leading method for forming graphene due to the ability to control graphene nucleation across larger surfaces and structures. Nanoscale 3D printing of carbon structures also allows for a great degree of freedom towards the creation of repeatable patterns or structures that are currently trying to be achieved in other studies. This study employs the use of controlled cleanroom environments with cutting edge technology and machines to fabricate the 3D carbon nanostructures.
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Lee, Beom-Ryeol, Wookho Son, Jung-Young Son, Hyoung Lee, and Jung Kim. "A HMD with automatic control of interocular distance." In Three-Dimensional Imaging, Visualization, and Display 2019, edited by Jung-Young Son, Bahram Javidi, and Osamu Matoba. SPIE, 2019. http://dx.doi.org/10.1117/12.2521276.

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Yong Zhuo and Xiaolei Du. "Automatic registration of partial overlap three-dimensional surfaces." In 2010 International Conference on Mechanic Automation and Control Engineering (MACE). IEEE, 2010. http://dx.doi.org/10.1109/mace.2010.5535865.

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de la Fraga, Luis Gerardo. "Smooth three-dimensional reconstruction from contour maps." In 2008 5th International Conference on Electrical Engineering, Computing Science and Automatic Control (CCE). IEEE, 2008. http://dx.doi.org/10.1109/iceee.2008.4723436.

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Lin, Wei-Yang, and Ming-Yang Chen. "Automatic quality assessment and preprocessing for three-dimensional face recognition." In 2012 International Conference on Information Security and Intelligence Control (ISIC). IEEE, 2012. http://dx.doi.org/10.1109/isic.2012.6449757.

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Wu Chao-shuai, Liu Guo-rong, Zhang Wen-li, and Zhang Wei. "A* algorithm used in three-dimensional environment for optimal path planning." In International Conference on Automatic Control and Artificial Intelligence (ACAI 2012). Institution of Engineering and Technology, 2012. http://dx.doi.org/10.1049/cp.2012.0906.

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Yukun, Wang, and Zhu Yongli. "Terrain three-dimensional visualization based on dynamic LOD quadtree arithmetic." In 2012 IEEE International Conference on Intelligent Control, Automatic Detection and High-End Equipment (ICADE). IEEE, 2012. http://dx.doi.org/10.1109/icade.2012.6330090.

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