Ferrari, Ana Lya Moya, Piculo dos Santos, Aline Darc, Bertolaccini, Guilherme da Silva, Medola, Fausto Orsi, and Sandnes, Frode Eika
Ferrari, A.L.M., Piculo dos Santos, A.D., Bertolaccini, G.S., Medola, F.O. & Sandnes, F.E. (2020). Evaluation of orthosis rapid prototyping during the design process: Analysis of verification models. In: M. Di Nicolantonio, E. Rossi & T. Alexander (Eds.), Advances in additive manufacturing, modeling systems and 3D prototyping: Proceedings of the AHFE 2019 International Conference on Additive Manufacturing, Modeling Systems and 3D Prototyping, Cham: Springer (pp. 298-307)
Usó, Vanessa Ghiraldeli, Sandnes, Frode Eika, and Medola, Fausto Orsi
Usó, V.G., Sandnes, F.E. & Medola, F.O. (2020). Using virtual reality and rapid prototyping to co-create together with hospitalized children. In: M. Di Nicolantonio, E. Rossi & T. Alexander (Eds.). Advances in additive manufacturing, modeling systems and 3D prototyping: Proceedings of the AHFE 2019 International Conference on Additive Manufacturing, Modeling Systems and 3D Prototyping, 2020 (pp. 279-288) Cham: Springer
RAPID prototyping, LASER welding, POLYMERS, DEGREES of freedom, and MICROMACHINING
Abstract
We report on a novel rapid prototyping approach for the manufacturing of highly individualized lab-on-chip (LoC) cartridges from generic polymer parts by laser micromachining and laser welding. The approach allows an immediate implementation of microfluidic networks, components, and functionalities into an existing LoC platform without the need for an expensive and time-consuming fabrication of production tools like molds or masks. We comprehensively describe the individual process steps of the rapid prototyping procedure including a wet-chemical treatment for an easy and effective surface polishing of laser micromachined polymer parts. For laying out, we introduce a generalized diagrammatic description of microfluidic functional units in order to design application-specific cartridges for molecular diagnostic workflows. We demonstrate the usability of our prototyped cartridges by performing microfluidic experiments within. Due to the use of generic polymer parts, our rapid prototyping approach combines a high degree of freedom with an intrinsic compatibility to an established and highly developed LoC system. By enabling an experimental testing within one day, the rapid prototyping procedure shortens development cycles and boosts the evolution of microfluidic networks as well as the implementation of novel microfluidic components and functionalities. [ABSTRACT FROM AUTHOR]
An effective development platform for custom lab-on-a-chip and lab-on-a-foil solutions has been regarded as a missing element for wider adoption of microfluidic technologies in everyday life. We have used a direct laser structuring device combined with CAD-CAM software and have developed an efficient, fast, and precise procedure for rapid prototyping of widely accessible contemporary materials utilized for flexible microfluidics. Utilization of an ultra-short pulsed laser has enabled us to predict and control the laser ablation process on thin low-temperature co-fired ceramics and Kapton foil. We have demonstrated an agreement between the theoretic predictions and experimental data on ablation rates, paving the way to a fully predictive manufacturing process. Our procedure enables an independent control of microfluidic channel shape, depth, and lateral dimensions down to 10 µm, while maintaining an exceptional process quality achieved by a parametrically optimized laser output at single-picosecond pulse durations. Our novel rapid prototyping solution features short turnover times, minimum material waste, no chemical procedures, and a single-step process free of heat-effects. We demonstrate the improvements to the structuring process on a known difficult-to-manufacture herringbone mixer structures inside a micro-mixer chip application. [ABSTRACT FROM AUTHOR]
This article presents a novel sensor for detecting and measuring angular rotation and proximity, intended for rapid prototyping machines. The sensor is based on a complementary split-ring resonator (CSRR) driven by a conductor-backed coplanar waveguide (CBCPW). The sensor has a planar topology, which makes it simple and cost-effective to produce and accurate in measuring both physical quantities. The sensor has two components, a rotor and a stator: the first of these (the CSRR) can rotate around its axis and translate along the plane normal to the ground of the CBCPW. A detailed theoretical and numerical analysis, along with a circuit model, of the unique sensor design is presented. The proposed sensor exhibits linear response for measuring angular rotation and proximity in the range of 30°–60° and 0–200 μm, respectively. Another distinctive feature of the rotation and proximity sensor is the wide frequency band of applicability, which is an integral part of its novel design and is implemented through various dielectric material loadings on the CSRR. In the prototype of the proposed device, the stator (CBCPW) is fabricated on a 0.508-mm-thick RF-35 substrate, whereas the CSRR-based rotor is fabricated on TLY-5 and RF-35 substrates. The angular rotation, proximity, operating band selection, and sensitivity are measured using a vector network analyzer and are found to be good matches to the simulated and theoretical results. [ABSTRACT FROM AUTHOR]
RAPID prototyping, CHEMICAL engineering, INTEGRATED software, CHEMICAL processes, COMPUTER software, INDUSTRIAL applications, and DYNAMIC simulation
Abstract
With ongoing digitalization, fast simulation of process dynamics offers new opportunities for model‐based control schemes. This is eased by the availability of high‐level, open‐access, easy‐to‐use software able to simulate and optimize chemical processes, making rapid prototyping possible also for the chemical engineer. In this study, the capabilities of the Python‐based open‐source software package Pyomo towards industrial application is illustrated in modeling and comparing different control schemes for a simple Williams‐Otto process. It is shown how to simulate the process dynamics and how to compute optimal control trajectories for minimizing waste and maximizing yield. Two approaches to setpoint tracking are compared: one based on proportional‐integral feedback control and one based on optimal open‐loop control. [ABSTRACT FROM AUTHOR]
Emergence of advanced digital technology has opened up new perspectives for design and production in the field of dentistry. Rapid prototyping (RP) is a technique to quickly and automatically construct a three-dimensional (3D) model of a part or product using 3D printers or stereolithography machines. RP has various dental applications, such as fabrication of implant surgical guides, zirconia prosthesis and molds for metal castings, maxillofacial prosthesis and frameworks for fixed and removable partial dentures, wax patterns for the dental prosthesis and complete denture. Rapid prototyping presents fascinating opportunities, but the process is difficult as it demands a high level of artistic skill, which means that the dental technicians should be able to work with the models obtained after impression to form a mirror image and achieve good esthetics. This review aims to focus on various RP methods and its application in prosthodontic dentistry. [ABSTRACT FROM AUTHOR]
RAPID prototyping, CONCEPTUAL art, METHODOLOGY, ARTS, WORKS of art in art, and TECHNOLOGY
Abstract
Open prototyping is presented as a conceptual and methodological framework for artistic practice and public participation that bridges the space between technology and society and contributes to city and technology innovation. Such practices can make ideas about the future tangible and realize different configurations of infrastructures, data, situations and people. Many works here are boundary objects, taking place in grey zones between disciplines and sectors. The article may thus deepen understanding at the fault lines between art and innovation and ways in which art can shape the direction of technology development. [ABSTRACT FROM AUTHOR]
This paper presents a new control algorithm development approach for induction machines by using model-based design and a systematically built model architecture implemented in MATLAB/Simulink. The model architecture follows a three-layer structure, and it is developed according to the principle of functional decomposition and the needs of reusability and expandability. The first model layer consists of elementary model and algorithm components, the second contains a machine simulation model and a field-oriented control (FOC) algorithm, built upon the first layer's components, and the third realises the executable models by connecting the models and algorithms defined in the second layer. Furthermore, rapid control prototyping (RCP) is discussed as an experimental validation method, and an experimental setup with RCP is also introduced. The application of the presented methods is demonstrated by simulations as well as by experiments, and by using a control algorithm based on FOC as an example. [ABSTRACT FROM AUTHOR]
Marantos, Charalampos, Siozios, Kostas, and Soudris, Dimitrios
IEEE Transactions on Control Systems Technology; Sep2020, Vol. 28 Issue 5, p1831-1845, 15p
Subjects
THERMOSTAT, VIRTUAL prototypes, RAPID prototyping, COMPUTATIONAL complexity, and CUSTOMIZATION
Abstract
Recently, a new generation of systems with integrated computational and physical capabilities, also known as CyberPhysical Systems (CPSs), has been introduced. The control of these systems often results in very high-order models imposing great challenges to the analysis and design problems. In the context of this paper, a decision-making mechanism for these systems is proposed. Moreover, we introduce a virtual prototyping framework for the physical implementation and customization of these orchestrators. For evaluation purposes, the introduced solution is applied to design a low-cost smart thermostat in a microgrid environment. Experimental results highlight the superiority of introduced orchestrator, as it achieves comparable performance to state-of-the-art relevant decision-making approaches, but with considerable lower computational and storage complexities. [ABSTRACT FROM AUTHOR]
LOW temperatures, CHEMICAL vapor deposition, TECHNOLOGY, RAPID prototyping, LIQUID crystal displays, FLEXIBLE electronics, and SILICON solar cells
Abstract
A Corial Inductively Coupled Plasma Chemical Vapor Deposition (ICP‐CVD) system has been investigated to produce un‐doped and doped μ‐Si layers, as well as insulators, leading to a general capability of performing N and P type TFTs. This enables to develop rapid prototyping of TFTs. Resistivity of layers and TFT issues from ICP‐CVD have been electrically characterized. [ABSTRACT FROM AUTHOR]
Current days many researchers are looking forward to biodegradable material to overcome global issues. In continuation to the present era, 3D printing technology creating interest among the research community due to the flexibility in design and its fabrication. Many novel materials are introducing to the world by 3D printing method considering applications, strength and fabrications aspects. However, limited flexible materials availability in 3D printing which are replacing moderate strength applications. Polyvinyl Alcohol (PVA) is showcasing unique properties among polymers with many of the flexible structural and biomedical applications. This work focused on the wear behavior of PVA fabricated by rapid prototyping technique. Wear samples are prepared by adopting 40 layers of PVA using staking sequence of (45°/135°) for 4mm thickness. This PVA further characterized by considering variable input parameters like wear speed, load and sliding distance using L9 Taguchi orthogonal array experimental design. The percentage of weight loss method used to understand the influence of wear parameters. The result shows that load greatly influenced than the speed and sliding distance. The maximum weight loss was observed at a lower sliding distance at a higher load and speed. Similarly, moderate weight loss was found at a higher sliding distance with higher speed and load. But minimum weight loss was reported at a lower sliding distance at lower speed and load. Further, the multiple regression analysis was used to understand the contributions of input parameters and their interactions among them. Found that load, speed, speed and sliding distance, speed and load, sliding distance and, load and sliding distance are having contributions of 31.91%, 28.51%, 19.61%, 10.08%, 5.24% and 1.64% respectively. [ABSTRACT FROM AUTHOR]
RAPID prototyping, SELECTIVE laser sintering, DENTISTRY, and STEREOLITHOGRAPHY
Abstract
The advent of Rapid prototyping has opened new prospects in medical field, especially dentistry with its accuracy and speed. Rapid prototyping is an additive manufacturing technology that produces prototype models by adding materials, layer by layer. The earlier subtractive technologies manufactured objects via milling or grinding of a material resulting in replication of only external surface details. On the contrary, rapid prototyping provides a replica with internal complex shapes. This article discusses the various Rapid prototyping technologies commonly employed in dentistry such as selective laser sintering, stereolithography, fused deposition modelling. inkjet printing and solid ground curing. [ABSTRACT FROM AUTHOR]
International Journal of Advanced Manufacturing Technology; Jul2020, Vol. 109 Issue 1/2, p377-384, 8p, 4 Color Photographs, 3 Diagrams, 5 Charts, 4 Graphs
Subjects
RAPID prototyping, INVESTMENT casting, ELECTRIC metal-cutting, MANUFACTURING processes, ELECTRODES, FEASIBILITY studies, MACHINING, and FABRICATION (Manufacturing)
Abstract
This study fabricates a roughing electrode of electrical discharge machining (EDM) using a rapid prototyping (RP) system and investment casting technology, which reduces the overall time that is required for fabrication and the cost of the manufacturing process for a selected electrode. Pro/E (3D CAD) software is used to design the electrode prototype, which has a complex appearance, and to transform the CAD model into stereolithography (STL) format. An RP machine (Zcorp 402 3DP) is used to construct a gypsum-based powder model. After a sealing process using the permeation of resin, the water resistance and strength of the gypsum-based material are increased. The manufacturing process then involves creating a wax model with a gypsum electrode that is strengthened by resin permeation by casting a vulcanized silicone molding. The brass electrode is fabricated using investment casting technology. The results of an EDM test show that the brass electrodes with RP that are manufactured perform well and the total time that is required to machine the EDM electrode using RP is 15.8% less than the time that is required for a CNC machining process. [ABSTRACT FROM AUTHOR]
Carrillo, Gilberto, Nuila, Carolina, and Laínez, Jorge
Ingenius, Revista Ciencia y Tecnología; jul-dic2020, p28-35, 8p
Subjects
RAPID prototyping, REVERSE engineering, ENGINEERING laboratories, MANUFACTURING processes, PLASTIC bottles, and INTERNATIONAL markets
Abstract
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