Relevant bibliographies by topics / Technologie FFF

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

Academic literature on the topic 'Technologie FFF'

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

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Journal articles on the topic "Technologie FFF"

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Ferreira, Isaac, Margarida Machado, Fernando Alves, and António Torres Marques. "A review on fibre reinforced composite printing via FFF." Rapid Prototyping Journal 25, no. 6 (July 8, 2019): 972–88. http://dx.doi.org/10.1108/rpj-01-2019-0004.

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Purpose In industry, fused filament fabrication (FFF) offers flexibility and agility by promoting a reduction in costs and in the lead-time (i.e. time-to-market). Nevertheless, FFF parts exhibit some limitations such as lack of accuracy and/or lower mechanical performance. As a result, some alternatives have been developed to overcome some of these restrictions, namely, the formulation of high performance polymers, the creation of fibre-reinforced materials by FFF process and/or the design of new FFF-based technologies for printing composite materials. This work aims to analyze these technologies. Design/methodology/approach This work aims to study and understand the advances in the behaviour of 3D printed parts with enhanced performance by its reinforcement with several shapes and types of fibres from nanoparticles to continuous fibre roving. Thus, a comprehensive survey of significant research studies carried out regarding FFF of fibre-reinforced thermoplastics is provided, giving emphasis to the most relevant and innovative developments or adaptations undergone at hardware level and/or on the production process of the feedstock. Findings It is shown that the different types of reinforcement present different challenges for the printing process with different outcomes in the part performance. Originality/value This review is focused on joining the most important researches dedicated to the process of FFF-printed parts with different types reinforcing materials. By dividing the reinforcements in categories by shape/geometry and method of processing, it is possible to better quantify performance improvements.
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Li, Yongxiang, Wei Zhao, Qiushi Li, Tongcai Wang, and Gong Wang. "In-Situ Monitoring and Diagnosing for Fused Filament Fabrication Process Based on Vibration Sensors." Sensors 19, no. 11 (June 6, 2019): 2589. http://dx.doi.org/10.3390/s19112589.

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Fused filament fabrication (FFF) is one of the most widely used additive manufacturing (AM) technologies and it has great potential in fabricating prototypes with complex geometry. For high quality manufacturing, monitoring the products in real time is as important as maintaining the FFF machine in the normal state. This paper introduces an approach that is based on the vibration sensors and data-driven methods for in-situ monitoring and diagnosing the FFF process. The least squares support vector machine (LS-SVM) algorithm has been applied for identifying the normal and filament jam states of the FFF machine, besides fault diagnosis in real time. The identification accuracy for the case studies explored here using LS-SVM is greater than 90%. Furthermore, to ensure the product quality during the FFF process, the back-propagation neural network (BPNN) algorithm has been used to monitor and diagnose the quality defects, as well as the warpage and material stack caused by abnormal leakage for the products in-situ. The diagnosis accuracy for the case studies explored here using BPNN is greater than 95%. Results from the experiments show that the proposed approach can accurately recognize the machine failures and quality defects during the FFF process, thus effectively assuring the product quality.
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Mashayekhi, Fatemeh, Julien Bardon, Vincent Berthé, Henri Perrin, Stephan Westermann, and Frédéric Addiego. "Fused Filament Fabrication of Polymers and Continuous Fiber-Reinforced Polymer Composites: Advances in Structure Optimization and Health Monitoring." Polymers 13, no. 5 (March 4, 2021): 789. http://dx.doi.org/10.3390/polym13050789.

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3D printed neat thermoplastic polymers (TPs) and continuous fiber-reinforced thermoplastic composites (CFRTPCs) by fused filament fabrication (FFF) are becoming attractive materials for numerous applications. However, the structure of these materials exhibits interfaces at different scales, engendering non-optimal mechanical properties. The first part of the review presents a description of these interfaces and highlights the different strategies to improve interfacial bonding. The actual knowledge on the structural aspects of the thermoplastic matrix is also summarized in this contribution with a focus on crystallization and orientation. The research to be tackled to further improve the structural properties of the 3D printed materials is identified. The second part of the review provides an overview of structural health monitoring technologies relying on the use of fiber Bragg grating sensors, strain gauge sensors and self-sensing. After a brief discussion on these three technologies, the needed research to further stimulate the development of FFF is identified. Finally, in the third part of this contribution the technology landscape of FFF processes for CFRTPCs is provided, including the future trends.
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Dyachenko, E. A., M. Yu Kozenko, A. M. Makarov, and A. V. Vaganov. "ANALYSIS OF EXISTING KINEMATICS OF FFF / FDM 3D PRINTERS." IZVESTIA VOLGOGRAD STATE TECHNICAL UNIVERSITY, no. 1(248) (January 27, 2021): 57–60. http://dx.doi.org/10.35211/1990-5297-2021-1-248-57-60.

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A comparison of the kinematics used in additive technologies is carried out in order to determine their advantages and disadvantages. The most promising kinematics will be used to create a laboratory stand based on it.
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Honigmann, Philipp, Neha Sharma, Brando Okolo, Uwe Popp, Bilal Msallem, and Florian M. Thieringer. "Patient-Specific Surgical Implants Made of 3D Printed PEEK: Material, Technology, and Scope of Surgical Application." BioMed Research International 2018 (2018): 1–8. http://dx.doi.org/10.1155/2018/4520636.

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Additive manufacturing (AM) is rapidly gaining acceptance in the healthcare sector. Three-dimensional (3D) virtual surgical planning, fabrication of anatomical models, and patient-specific implants (PSI) are well-established processes in the surgical fields. Polyetheretherketone (PEEK) has been used, mainly in the reconstructive surgeries as a reliable alternative to other alloplastic materials for the fabrication of PSI. Recently, it has become possible to fabricate PEEK PSI with Fused Filament Fabrication (FFF) technology. 3D printing of PEEK using FFF allows construction of almost any complex design geometry, which cannot be manufactured using other technologies. In this study, we fabricated various PEEK PSI by FFF 3D printer in an effort to check the feasibility of manufacturing PEEK with 3D printing. Based on these preliminary results, PEEK can be successfully used as an appropriate biomaterial to reconstruct the surgical defects in a “biomimetic” design.
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Jiang, Yong, Michael E. Miller, Marcia E. Hansen, Marcus N. Myers, and P. Stephen Williams. "Fractionation and size analysis of magnetic particles using FFF and SPLITT technologies." Journal of Magnetism and Magnetic Materials 194, no. 1-3 (April 1999): 53–61. http://dx.doi.org/10.1016/s0304-8853(98)00577-0.

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Moretti, Michele, Federico Bianchi, and Nicola Senin. "Towards the development of a smart fused filament fabrication system using multi-sensor data fusion for in-process monitoring." Rapid Prototyping Journal 26, no. 7 (June 26, 2020): 1249–61. http://dx.doi.org/10.1108/rpj-06-2019-0167.

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Purpose This paper aims to illustrate the integration of multiple heterogeneous sensors into a fused filament fabrication (FFF) system and the implementation of multi-sensor data fusion technologies to support the development of a “smart” machine capable of monitoring the manufacturing process and part quality as it is being built. Design/methodology/approach Starting from off-the-shelf FFF components, the paper discusses the issues related to how the machine architecture and the FFF process itself must be redesigned to accommodate heterogeneous sensors and how data from such sensors can be integrated. The usefulness of the approach is discussed through illustration of detectable, example defects. Findings Through aggregation of heterogeneous in-process data, a smart FFF system developed upon the architectural choices discussed in this work has the potential to recognise a number of process-related issues leading to defective parts. Research limitations/implications Although the implementation is specific to a type of FFF hardware and type of processed material, the conclusions are of general validity for material extrusion processes of polymers. Practical implications Effective in-process sensing enables timely detection of process or part quality issues, thus allowing for early process termination or application of corrective actions, leading to significant savings for high value-added parts. Originality/value While most current literature on FFF process monitoring has focused on monitoring selected process variables, in this work a wider perspective is gained by aggregation of heterogeneous sensors, with particular focus on achieving co-localisation in space and time of the sensor data acquired within the same fabrication process. This allows for the detection of issues that no sensor alone could reliably detect.
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Dizon, John Ryan Cortez, Arnaldo D. Valino, Lucio R. Souza, Alejandro H. Espera, Qiyi Chen, and Rigoberto C. Advincula. "3D Printed Injection Molds Using Various 3D Printing Technologies." Materials Science Forum 1005 (August 2020): 150–56. http://dx.doi.org/10.4028/www.scientific.net/msf.1005.150.

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This paper explores the possibility of using different 3d printing methods and materials in the production of polymer molds for injection molding applications. A mold producing a cube was designed using a commercial software. Following the standard 3d printing process, injection molds which could produce a cube were printed using different 3d printing materials and 3d printing technologies. The 3d printing technologies used were Stereolithography (SLA), Polyjet and Fused Filament Fabrication (FFF). A bench-top injection molding machine was used to inject polylactic acid (PLA) in these molds. The quality of the injected parts in terms of dimensional accuracy has been investigated. In some cases, the damage mechanism of the polymer molds has also been observed.
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Gradwohl, Marion, Feng Chai, Julien Payen, Pierre Guerreschi, Philippe Marchetti, and Nicolas Blanchemain. "Effects of Two Melt Extrusion Based Additive Manufacturing Technologies and Common Sterilization Methods on the Properties of a Medical Grade PLGA Copolymer." Polymers 13, no. 4 (February 14, 2021): 572. http://dx.doi.org/10.3390/polym13040572.

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Although bioabsorbable polymers have garnered increasing attention because of their potential in tissue engineering applications, to our knowledge there are only a few bioabsorbable 3D printed medical devices on the market thus far. In this study, we assessed the processability of medical grade Poly(lactic-co-glycolic) Acid (PLGA)85:15 via two additive manufacturing technologies: Fused Filament Fabrication (FFF) and Direct Pellet Printing (DPP) to highlight the least destructive technology towards PLGA. To quantify PLGA degradation, its molecular weight (gel permeation chromatography (GPC)) as well as its thermal properties (differential scanning calorimetry (DSC)) were evaluated at each processing step, including sterilization with conventional methods (ethylene oxide, gamma, and beta irradiation). Results show that 3D printing of PLGA on a DPP printer significantly decreased the number-average molecular weight (Mn) to the greatest extent (26% Mn loss, p < 0.0001) as it applies a longer residence time and higher shear stress compared to classic FFF (19% Mn loss, p < 0.0001). Among all sterilization methods tested, ethylene oxide seems to be the most appropriate, as it leads to no significant changes in PLGA properties. After sterilization, all samples were considered to be non-toxic, as cell viability was above 70% compared to the control, indicating that this manufacturing route could be used for the development of bioabsorbable medical devices. Based on our observations, we recommend using FFF printing and ethylene oxide sterilization to produce PLGA medical devices.
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Ahroni, Y., N. Dresler, A. Ulanov, D. Ashkenazi, M. Aviv, M. Librus, and A. Stern. "Selected Applications of Stimuli-Responsive Polymers: 4D Printing by the Fused Filament Fabrication Technology." Annals of Dunarea de Jos University of Galati Fascicle XII Welding Equipment and Technology 31 (December 28, 2020): 13–22. http://dx.doi.org/10.35219/awet.2020.02.

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In the past few years four-dimensional (4D) printing technologies have attained worldwide interest and they are now considered the "next big thing". The aim of this research is to provide three selected examples of stimuli-responsive polymer (SRP) applications additively manufactured (AM) by the fused filament fabrication (FFF) technique. To that end, a CCT BLUE filament of thermo-responsive polymer was chosen to produce a water temperature indicator, which changes colour from blue to white when temperature increases; a CCU RED filament of photo-responsive polymer was used to produce a sunlight / UV indicator bracelet; a transparent PLA CLEAR polymer, a CCU RED photo-responsive polymer, and an electrical conductive PLA polymer were selected to produce a smart business card stand. The temperature indicator capability was analysed based on examining colour changes as a function of temperature changes. The sunlight/UV indicator capability was analysed based on the inspection of colour change as a function of absorbed sun/ultraviolet light. The electrical conductivity of the conductive PLA polymer was examined by performing resistance measurements. All three objects were successfully produced and their functionality was demonstrated. We hope that these examples will catalyse the expansion of FFF 4D printed SRP applications, as much work remains to be done in designing the parts and developing FFF printing parameters that take advantage of the stimuli-responsive materials currently being developed for FFF technology.
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Dissertations / Theses on the topic "Technologie FFF"

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Jiroušek, Jan. "Analýza mechanických vlastností plastových vzorků zhotovených technologií 3D tisku." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2021. http://www.nusl.cz/ntk/nusl-444289.

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The master's thesis deals with the determination of mechanical properties of materials used for 3D printing (PLA, PETG, ABS, ASA). The theoretical part contains characteristics of polymer materials and describes testing of mechanical properties and additive technologies. In the experimental part, the standardized samples produced by the technology Fused Filament Fabrication were analysed using mechanical tests (tensile test and hardness test). Some of the examples were exposed to the selected factors of degradation. Selected parameters from mechanical testing (tensile strength, modulus of elasticity in tension, elongation and Shore hardness) were statistically processed. The conclusion of the thesis evaluates the impact of the factors of degradation on particular materials and compares them subsequently.
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Håkansson, Joel, and Otto Gårdebäck. "Elastiskt Ekvivalenta Modeller av Aortaaneurysm : Via 3D-printing med FFF-teknik." Thesis, KTH, Skolan för teknikvetenskap (SCI), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-257782.

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En aortaaneurysm är en komplicerad sjukdom med väldigt begränsade behandlingsmetoder. En bättre förståelse kring sjukdomen är därmed väsentligt för utvecklingen av ny medicin. Den här rapporten behandlar möjligheten att skriva ut modeller av aortaaneurysmer med samma materiella beteede som en riktig. Sådana modeller skulle vara en stor fördel i utveckling av ny medicin, eftersom de skulle tillåta forskare och läkare att både billigt och enkelt skapa pålitliga modeller i forskningssyfte. Skrivaren som undersökts är en Fused Filament Fabrication 3D-skrivare med polymeren TPU 95A som val av material. Detta genomfördes via två olika processer. Den första var materialtester med dragprovkurvor för vald polymer, samt undersökning av begränsningar med FFF-skrivare. Den andra var en finit elementanalys av en aortaaneurysm, från en röntgen med CT-angiografi. Resultaten från de två tillvägagångssätten har sedan jämförts och analyserats. Dragproverna gav TPU 95A en töjning på 2-4 %. Detta bedömdes för styvt i jämförelse med FEM-analysen, som uppmätte en cirka fem gånger större töjning. Om ett elastiskt material som uppfyller nödvändig töjning skulle användas har FFF-metoden fortfarande problem. Dessa problem innefattar instabilitet under utskrift samt ett större behov av supportmaterial, vilket riskerar att blockera flödet genom modellen. 3D-utskrift med FFF-metoden ansågs därmed ej lämpad för elastiskt ekvivalenta aneurysmmodeller, om inte tester med små deformationer utförs.
An abdominal aorta aneurysm is a very complicated condition with limited medical treatments. A better understanding of the disease is therefore vital for development of new treatment methods. This report covers the ability to print models of an aortic aneurysm with the same material properties as the real ones. Such models would be of great benefit as it would allow scientists and doctors to both easily and cheaply produce viable models for their research. The printer tested was a Fused Filament Fabrication printer with TPU 95A polymer as choice of material. This was done with a two-step process. The first step being material testing, producing stress-strain curves of the polymer and evaluating the limitations of FFF printing. The second being a finite element analysis of an aortic aneurysm from a CT angiography scan. The results from the two approaches then were compared. The material testing gave TPU 95A an elongation of 2-4 % which was deemed to stiff when compared to the FEM-analysis, that had an elongation approximately five times larger. If an elastic material to satisfy the required elongation were used, the FFF printing method still would have to deal with print stability problems and an increased need of support structures that could block the polymer blood vessel. As such FFF printing was seemed inadequate for printing elastic equivalent aortic aneurysm models unless for specific tests with small deformations.
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Järleblad, Henrik. "Att lösapartiella differentialekvationermed FFT i fri rymd." Thesis, KTH, Skolan för teknikvetenskap (SCI), 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-210860.

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Detta kandidatexamensarbete har till syfte att belysa och utforska hur partiella differentialekvationer kan lösas på ett enkelt, effektivt och noggrant sätt i fri rymd, dvs då området är obegränsat (Rn). Lösningsmetoder som fungerar bra på begränsade domäner är generellt inte speciellt effektiva för dessa typer av problem, då artificiella randvillkor måste sättas, och beräkningsdomänen måste göras stor för att få en god noggrannhet i lösningen. Arbetet baseras på en artikel av Vico et al. som publicerades i juli 2016 och som introducerar en metod baserad på trunkerade Greens-funktioner och snabba Fouriertransformen (FFT). Den har spektral konvergens, och är relativt enkel att implementera. Jämfört med periodiska problem, för vilka FFT-baserade metoder är optimala, så måste man för samma spatiella upplösning öka gridstorleken för transformen med en översamplingsfaktor i varje rumsdimension. Metoden har komplexitet O(N log N) där N är antalet gridpunkter. För att påvisa denna metods användningspotential så visar detta projekt hur metoden kan användas för att lösa både Poissons och Helmholtz ekvationer i två respektive tre dimensioner, och demonstrerar också metodens spektrala noggrannhet och förväntade beräkningskomplexitet.
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Ansari, Mubashir Qamar. "Generation of Thermotropic Liquid Crystalline Polymer (TLCP)-Thermoplastic Composite Filaments and Their Processing in Fused Filament Fabrication (FFF)." Diss., Virginia Tech, 2019. http://hdl.handle.net/10919/99885.

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One of the major limitations in Fused Filament Fabrication (FFF), a form of additive manufacturing, is the lack of composites with superior mechanical properties. Traditionally, carbon and glass fibers are widely used to improve the physical properties of polymeric matrices. However, the blending methods lead to fiber breakage, preventing generation of long fiber reinforced filaments essential for printing load-bearing components. Our approach to improve tensile properties of the printed parts was to use in-situ composites to avoid fiber breakage during filament generation. In the filaments generated, we used thermotropic liquid crystalline polymers (TLCPs) to reinforce acrylonitrile butadiene styrene (ABS) and a high performance thermoplastic, polyphenylene sulfide (PPS). The TLCPs are composed of rod-like monomers which are highly aligned under extensional kinematics imparting excellent one-dimensional tensile properties. The tensile strength and modulus of the 40 wt.% TLCP/ABS filaments was improved by 7 and 20 times, respectively. On the other hand, the 67 wt.% TLCP/PPS filament tensile strength and modulus were improved by 2 and 12 times, respectively. The filaments were generated using dual extrusion technology to produce nearly continuously reinforced filaments and to avoid matrix degradation. Rheological tests were taken advantage of to determine the processing conditions. Dual extrusion technology allowed plasticating the matrix and the reinforcing polymer separately in different extruders. Then continuous streams of TLCP were injected below the TLCP melting temperature into the matrix polymer to avoid matrix degradation. The blend was then passed through a series of static mixers, subdividing the layers into finer streams, eventually leading to nearly continuous fibrils which were an order of magnitude lower in diameter than those of the carbon and glass fibers. The composite filaments were printed below the melting temperature of the TLCPs, and the conditions were determined to avoid the relaxation of the order in the TLCPs. On printing, a matrix-like printing performance was obtained, such that the printer was able to take sharp turns in comparison with the traditionally used fibers. Moreover, the filaments led to a significant improvement in the tensile properties on using in FFF and other conventional technologies such as injection and compression molding.
Doctor of Philosophy
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Ivebrink, Pontus, and Peter Ytterström. "Frekvensuppdelning med FPGA." Thesis, Linköping University, Department of Electrical Engineering, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-56238.

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Examensarbetets syfte var att skapa ett frekvensspektrum för ljud. För att representera detta frekvensspektrum används staplar av lysdioder. Systemet implementeras på ett Altera DE2 utvecklingskort. Olika sätt för att skapa dessa frekvensuppdelningar har testats och olika metoder för att lösa dessa har också testats.

Den slutliga implementeringen består av en filterbank som utnyttjar nersampling för att återanvända filter och sänka ordningen på dessa. Det största problemet var att få plats med allt på den FPGA som användes. Genom att byta till en lite mer komplicerad men effektivare filterstruktur så löstes detta problem och vi fick även gott om utrymme över.

Manualer och datablad har inte alltid varit lätta att tolka och ibland har andra metoder använts än de som beskrivs i dessa manualer med tips från support forum och handledare. Det finns vissa förbättringar att göra och vissa saker skulle kunnat göras annorlunda för att spara resurser med ett lite sämre resultat. När projektet var klart hade alla krav som ställts uppfyllts.

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Bien, Franklin Young-Jae. "Reconfigurable equalization for 10-Gb/sec serial data links in a 0.18-μm CMOS technology." Diss., Georgia Institute of Technology, 2006. http://hdl.handle.net/1853/14026.

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The objective of the proposed research is to realize a 10-Gb/sec serial data link over band-limited channels, such as backplanes, multi-mode fiber, and copper-based cables that were originally designed for data rates less than 1Gb/sec. This is achieved using electrical equalization implemented in an integrated circuit (IC). To successfully compensate for various band-limited channels at the targeted data rate with a single equalizer IC, a reconfigurable equalizer topology is proposed. In order to realize the proposed goal, various channels are characterized of their forward transmission frequency response. Based on the measured channel data, system simulations are performed to identify the required specifications for IC implementation. This provides information such as optimal number of taps, fractionally-spaced tap delay, and tap coefficients for the proposed IC. With the obtained system requirements, IC building blocks are designed and fabricated in a 0.18- and #956;m CMOS technology. The fully-integrated reconfigurable CMOS equalizer provides a single-chip solution for compensating various band-limited channels. This enables 10-Gb/sec serial data transmission achieving signal integrity beyond their designed specifications.
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Teixeira, Duarte Filipe Pereira. "Microsoft-Nokia : stategy and valuation." Master's thesis, Instituto Superior de Economia e Gestão, 2015. http://hdl.handle.net/10400.5/10888.

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Mestrado em Finanças
A constante necessidade de inovação no setor tecnológico é uma grande condicionante para o sucesso de uma empresa desse sector. A Microsoft, uma das maiores empresas do setor, tem ficado para trás dos seus principais concorrentes (Apple e Samsung), não beneficiando das novas tendências de mercado: móvel e cloud. Esta necessidade de inovar, aliada à turbulência financeira que estamos a viver, levaram a Microsoft a reagir e aproveitar a oportunidade de adquirir o segmento de telemóveis da Nokia. Para o fazer, a Microsoft predispôs-se a pagar $9,500 milhões pelo segmento de "Devices and Services". Fusões e aquisições são consideradas uma das melhores formas para as empresas aumentarem o valor para os seus acionistas, apesar das dificuldades inerentes ao processo. O objetivo deste projeto é compreender as motivações por trás do negócio, do ponto de vista da Microsoft, estimar as possíveis sinergias e avaliar a empresa que resultou desta aquisição.
The constant need for innovation in the technology sector is a major drive for a company?s success. Microsoft, one of the largest companies in the sector was lagging behind its competitors (such as Apple and Samsung), not being able to benefit from new market trends: mobile and cloud. The need to innovate, alongside the financial turmoil we are living in, led Microsoft to react and seize the opportunity to acquire Nokia?s phone segment. To do that, Microsoft paid Nokia $9,500 million for its "Devices and Services" segment. Mergers and Acquisitions are considered one of the best forms for companies to achieve value growth for their shareholders despite the inherent difficulties. The goal of this project is to understand the motivations behind the deal (from Microsoft's perspective), evaluate the possible synergies, and perform a valuation of the company that resulted from this acquisition.
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Dahlbäck, Niklas. "Implementation of a fast method for reconstruction of ISAR images." Thesis, Linköping University, Department of Electrical Engineering, 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-2073.

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By analyzing ISAR images, the characteristics of military platforms with respect to radar visibility can be evaluated. The method, which is based on the Discrete-Time Fourier Transform (DTFT), that is currently used to calculate the ISAR images requires large computations efforts. This thesis investigates the possibility to replace the DTFT with the Fast Fourier Transform (FFT). Such a replacement is not trivial since the DTFT is able to compute a contribution anywhere along the spatial axis while the FFT delivers output data at fixed sampling, which requires subsequent interpolation. The interpolation leads to a difference in the ISAR image compared to the ISAR image obtained by DTFT. On the other hand, the FFT is much faster. In this quality-and-time trade-off, the objective is to minimize the error while keeping high computational efficiency.

The FFT-approach is evaluated by studying execution time and image error when generating ISAR images for an aircraft model in a controlled environment. The FFT method shows good results. The execution speed is increased significantly without any visible differences in the ISAR images. The speed-up- factor depends on different parameters: image size, degree of zero-padding when calculating the FFT and the number of frequencies in the input data.

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Tompkins, Nicholas William. "Design of a Machine Condition Monitoring System with Bluetooth Low Energy." Thesis, University of North Texas, 2017. https://digital.library.unt.edu/ark:/67531/metadc984239/.

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Rigot, David. "Contribution à l'étude de l'érosion des électrodes de torches à plasma d'arc pour la projection par suivi en ligne des signaux de tension et de son." Limoges, 2003. http://aurore.unilim.fr/theses/nxfile/default/76eed5c7-37ed-4a93-a31a-2f2c4c44acdb/blobholder:0/2003LIMO0053.pdf.

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En projection thermique, les conséquences de l'érosion des électrodes d'une torche plasma peuvent être dommageables pour un dépôt en cours de réalisation (écaillage, mauvaise qualité, etc. ). Ce travail de thèse a consisté à suivre dans le temps de fonctionnement de la torche, depuis la mise en place d'électrodes neuves, jusqu'à leur remplacement, l'évolution de nombreux paramètres liés aux signaux émis par la torche (tension aux bornes des électrodes et signal acoustique) et à choisir ceux qui étaient les plus pertinents pour rendre compte de l'érosion. Les trois paramètres retenus sont la tension moyenne et l'écart quadratique moyen du signal de tension ainsi que la fréquence du pic principal du spectre du signal acoustique. Cette étude a été menée avec un logiciel d'acquisition et de traitement des données que nous avons développé sous Labview, dont l'algorithme est désormais intégré dans un module autonome construit autour d'un DSP (Digital Signal Processor) qui affiche suivant la comparaison avec deux seuils, l'état des trois paramètres. Un modèle thermique de l'érosion est également proposé
In plasma spraying, the consequences of the wear of the electrodes of d. C. Plasma torches may be catastrophic for a coating (bad quality, peeling, etc. ). This paper presents a new method that has consisted in monitoring along the working hours of the torch, starting with brand new electrodes ("initial time"), till they are replaced, the evolution of many parameters in relation with the signals emitted by the torch (voltage at the edges of the electrodes and sound). This study has allowed choosing those parameters that were the more relevant for giving an account of the erosion. They are the mean voltage, the root mean square value of the voltage, and the frequency of the main peak in the spectrum of the sound and especially the evolution of theirs ratio relatively to the values obtained at the initial time. This study was performed with a software, developed with Labview on a PC, now replaced by an electronic device. The latter, designed with the DSP (Digital Signal Processor) technology, displays, on light indicators, the state of the three parameters according to their comparison with two thresholds. A thermal simulation of the erosion is also proposed
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Books on the topic "Technologie FFF"

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Solomon Islands) Regional Information Technology Strategies Meeting (6th 1999 Honiara. ITPacNet99: Sixth Regional Information Technology Strategies Meeting : FFA Regional Conference Centre, Forum Fisheries Agency, Honiara, Solomon Islands, 2nd to 4th June 1999. Honiara, Solomon Islands: The Agency, 1999.

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F, Cátedra Manuel, ed. The CG-FFT method: Application of signal processing techniques to electromagnetics. Boston: Artech House, 1995.

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Catedra, Manuel F., Rafael F. Torres, Jose Basterrechea, and Emilio Gago. The CG-FFT Method: Application of Signal Processing Techniques to Electromagnetics. Artech House Publishers, 1995.

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Book chapters on the topic "Technologie FFF"

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Lee, Seung Hee, and Young Jin Lim. "FFS Technology." In Handbook of Visual Display Technology, 1–21. Berlin, Heidelberg: Springer Berlin Heidelberg, 2015. http://dx.doi.org/10.1007/978-3-642-35947-7_187-1.

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Lee, Seung Hee, and Young Jin Lim. "FFS Technology." In Handbook of Visual Display Technology, 2055–75. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-14346-0_187.

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Winter, C. J. "Entwicklungsstand und Aussichten der Solar-Wasserstoff-Technologie." In FfE Schriftenreihe der Forschungsstelle für Energiewirtschaft, 10–37. Berlin, Heidelberg: Springer Berlin Heidelberg, 1987. http://dx.doi.org/10.1007/978-3-642-52288-8_2.

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Rabie, Tamer. "Digital Image Steganography: An FFT Approach." In Networked Digital Technologies, 217–30. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-30567-2_18.

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Schultz, Christian, and Dana Mietzner. "The Technology Transfer Challenge." In FGF Studies in Small Business and Entrepreneurship, 1–8. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-61477-5_1.

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Piller, Frank, Dennis Hilgers, and Lisa Schmidthuber. "The Relevance of Technology Transfer." In FGF Studies in Small Business and Entrepreneurship, 149–63. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-61477-5_9.

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Berndt, Marko, and Dana Mietzner. "Facilitating Knowledge and Technology Transfer via a Technology Radar as an Open and Collaborative Tool." In FGF Studies in Small Business and Entrepreneurship, 207–30. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-61477-5_12.

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Landoni, Matteo, and dt ogilvie. "How Technology Travels from Old to New Firms: The Role of Employees’ Entrepreneurship in Technology Ventures." In FGF Studies in Small Business and Entrepreneurship, 263–82. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-73509-2_14.

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McConaghy, Trent. "FFX: Fast, Scalable, Deterministic Symbolic Regression Technology." In Genetic and Evolutionary Computation, 235–60. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4614-1770-5_13.

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Piller, Frank, Dennis Hilgers, Christoph Ihl, and Lisa Schmidthuber. "Using Open Innovation Platforms for Technology Transfer." In FGF Studies in Small Business and Entrepreneurship, 231–43. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-61477-5_13.

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Conference papers on the topic "Technologie FFF"

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Steuben, John, Douglas L. Van Bossuyt, and Cameron Turner. "Design for Fused Filament Fabrication Additive Manufacturing." In ASME 2015 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/detc2015-46355.

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In this paper, we explore the topic of Fused Filament Fabrication (FFF) 3D-printing. This is a low-cost additive manufacturing technology which is typically embodied in consumer-grade desktop 3D printers capable of producing useful parts, structures, and mechanical assemblies. The primary goal of our investigation is to produce an understanding of this process which can be employed to produce high-quality, functional engineered parts and prototypes. By developing this understanding, we create a resource which may be turned to by both researchers in the field of manufacturing science, and industrial professionals who are either considering the use of FFF-enabled technologies such as 3D printing, or those who have already entered production and are optimizing their fabrication process. In order to paint a cohesive picture for these readers, we examine several topic areas. We begin with an overview of the FFF process, its key hardware and software components, and the interrelationships between these components and the designer. With this basis, we then proceed to outline a set of design principles which facilitate the production of high quality printed parts, and discuss the selection of appropriate materials. Following naturally from this, we turn to the question of feedstock materials for FFF, and give advice for their selection and use. We then turn to the subject of the as-printed properties of FFF parts and the strong non-isotropic response that they exhibit. We discuss the root causes of this behavior and means by which its deleterious effects may be mitigated. We conclude by discussing a mixed numerical/experimental technique which we believe will enable the accurate characterization of FFF parts and structures, and greatly enhance the utility of this additive manufacturing technology. By formalizing and discussing these topics, we hope to motivate and enable the serious use of low-cost FFF 3D printing for both research and industrial applications.
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Ralchev, Martin, Valentin Mateev, and Iliana Marinova. "3D Printing of Magnetic Materials by FFF Technology." In 2020 12th Electrical Engineering Faculty Conference (BulEF). IEEE, 2020. http://dx.doi.org/10.1109/bulef51036.2020.9326060.

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Pereira, Lucas, Todd Letcher, and Gregory J. Michna. "The Effects of 3D Printing Parameters and Surface Roughness on Convective Heat Transfer Performance." In ASME 2019 Heat Transfer Summer Conference collocated with the ASME 2019 13th International Conference on Energy Sustainability. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/ht2019-3591.

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Abstract Additive manufacturing technology and applications have quickly expanded into many industries over the last several years. Improvements in resolution, strength, and material options have helped propel further growth of the industry. This study focuses on an additive manufacturing technology called fused filament fabrication (FFF). FFF involves the extrusion and layer-by-layer deposition of a molten thermoplastic material to create the desired part. One potential new application of FFF is the manufacture of heat exchangers and heat sinks. This study focuses on developing baseline experimental data related to convective heat transfer coefficients over surfaces of commonly used polymers in FFF 3d printing while varying printing parameters. Samples with layer heights (LH) of 0.1 mm, 0.2 mm and 0.3 mm were printed. As the layer height increases, the surface roughness also increased. Sample 1 of LH = 0.1 mm had a roughness of 9.72 μm and at a Reynolds number of 13,200 had a heat transfer coefficient of 72.2 W/m2-K and sample 1 of LH = 0.3 mm had a roughness of 28.83 μm and at a Reynolds number of 13,600 had a heat transfer coefficient of 84.6 W/m2-K.
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Tahara, Takayasu, Takuyo Kaida, Minoru Niimura, and Shinsuke Sakai. "Study on LTA Measurement for FFS Assessment." In ASME 2015 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/pvp2015-45658.

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FFS assessment technologies for pressure equipment have been studied and standardized in recent 15 years in Japan. FFS assessment of local thin area, LTA, is the most frequently used in process industries. However reliability of thickness measurement of LTA and influence to FFS assessment has not been studied much in the past. Uncertainty of thickness measurements and Remaining Strength Factor, RSF, were investigated on Round Robin Testing using manual UT and additional new technology such as flexi-alley UT and 3D LED system for LTA in pipes, It is recommended to use suitable combination of Manual or mechanized UT and 3D LTA measurement system in case of assessment of critical flaws and decision making for repair and replacement of pressure equipment.
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Katsura, Kohsuke. "Packaging technology for multigigabit optoelectronics." In Optical Fiber Communication Conference. Washington, D.C.: OSA, 1993. http://dx.doi.org/10.1364/ofc.1993.ff1.

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Wang, Gongshuo, Zhenyuan Jia, Fuji Wang, Chuanhe Dong, and Bo Wu. "Additive Manufacturing of Continuous Carbon Fiber Reinforced Thermoplastic Composites: An Investigation on Process-Impregnation-Property Relationship." In ASME 2020 15th International Manufacturing Science and Engineering Conference. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/msec2020-8404.

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Abstract Fused filament fabrication (FFF) is one of the most broadly used additive manufacturing technologies, which possesses the advantage of a reduction in fabrication time and cost for complex-structural parts. FFF-fabricated continuous carbon fiber reinforced thermoplastic (C-CFRTP) composites have seen their great potentials in the industry due to the extraordinary mechanical properties. However, the relationship among process parameters, impregnation percentage, and mechanical properties is still unknown, which has greatly hindered both the manufacturing and application of those advanced composite parts. For this reason, the influence of process parameters on the impregnation percentage and mechanical properties of C-CFRTP specimens has been investigated in this paper. The process-impregnation-properties relationship of FFF-fabricated C-CFRTP specimens has been revealed through theoretical analyses and experimental measurement. It could be concluded that the impregnation percentage served as the bridge connecting process parameters and mechanical properties, which would provide a great insight into the property improvement. The experimental results of microscopic measurement and mechanical tests indicated that the combination of low transverse movement speed, high nozzle temperature, and small layer thickness led to an improved impregnation percentage, which ultimately produced better mechanical properties. The findings in this work will guide the fabrication of C-CFRTP parts with excellent mechanical performance for practical engineering applications.
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Clark, R. K., Pantulu V. Avasarala, and Athamaram H. Soni. "Design and Evaluation of Flexible Gas Fired Forging System." In ASME 1994 Design Technical Conferences collocated with the ASME 1994 International Computers in Engineering Conference and Exhibition and the ASME 1994 8th Annual Database Symposium. American Society of Mechanical Engineers, 1994. http://dx.doi.org/10.1115/detc1994-0364.

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Abstract The advances in the furnace and high speed press technologies for forging applications necessitate the installation of automated material handling systems. In order to study the effect of integrating all these three new technologies, a simulation model of a flexible forging system (FFS) concept is developed. In this work a design procedure of the FFS is developed. A FFS is designed and evaluated. A simulation model of the FFS is developed on a computer using AutoMod simulation software. The developed model is simulated for various scenarios and the results are presented in this paper.
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Kim, Jaeyoon, and Bruce S. Kang. "Optimization of Design Process of Fused Filament Fabrication (FFF) 3D Printing." In ASME 2018 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/imece2018-87916.

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Fused Filament Fabrication (FFF) is one of the most common Additive Manufacturing (AM) technologies for thermoplastic materials. PLA, ABS, and nylon have generally been used for prototype development. With the development of carbon fiber reinforced polymer (CFRP) filament for FFF, AM parts with improved strength and functionality can be realized. While mechanical properties of various CFRP have been well studied, design methodology for structural optimization of CFRP parts remains an active research area. In this paper, a systematic optimization of design process of FFF 3D printing methodology is proposed for CFRP. Starting with standard coupon specimen tests including tensile, bending, and creep tests to obtain mechanical properties of CFRP. Finite element analyses (FEA) are conducted to find principal directions of the AM part and computed principal directions are utilized as fiber orientations. Then, the connecting lines of principal directions are used to develop a customized tool-path in FFF 3D printing to extrude fibers aligned with principal directions. Since currently available infill-patterns in 3D printing cannot precisely draw customized lines, a specific tool-path algorithm has been developed to distribute fibers with the desired orientations. To predict/assess mechanical behavior of the AM part, 3D printing process was simulated followed by FEA to obtain the anisotropic structural behavior induced by the customized tool-path. To demonstrate the design/manufacturing methodology, spur gears of a ball milling machine were selected as a case study and carbon fiber reinforced nylon filament was chosen as the AM materials. Relevant compression tests were conducted to assess their performance compared with those printed at regular tool-path patterns. Preliminary results show that CFRP gear printed by customized tool-path has about 8% higher stiffness than those printed by regular patterns. Also, flow distribution of printed fibers was verified using scanning electron microscope (SEM). SEM images showed that approximately 91% of fibers were oriented as intended. In summary, assisted by FEA, a customized 3D printing tool-path for CFRP has been developed with a case study to verify the proposed AM design methodology.
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Medelli´n-Castillo, Hugo I., and Joel Esau Pedraza Torres. "Rapid Prototyping and Manufacturing: A Review of Current Technologies." In ASME 2009 International Mechanical Engineering Congress and Exposition. ASMEDC, 2009. http://dx.doi.org/10.1115/imece2009-11750.

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The idea to develop processes capable to produce physical components quickly and without requiring tooling, led to the development of the “free form fabrication” (FFF) or “rapid prototyping” (RP) technologies in the early 1980s. RP systems generally build up a prototype directly from the computer-aided design (CAD) data by using an additive “layer by layer” method. The RP technologies have brought several advantages to the manufacturing industry in such a way that these technologies are evolving toward the production of end-use parts. This paper presents a review of rapid prototyping and manufacturing (RP&M) technologies from their origins. The review includes commercially available RP systems and RP technologies that are still at the development stage or that have been proposed. The operating principles and the features of these technologies are presented. Process parameters such as accuracy, layer thickness, operation speed are given. An extended classification of RP&M technologies is also included in this paper.
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Ilangovan, Karthik, Mazlan Dindi, Alexander Fuglesang, and Bastiaen Van Der Rest. "Qualification and Application of All Electric and Topside Less Subsea Multiphase Pump Technology in Subsea Factory Mission to Minimise the Life Cycle Cost." In International Petroleum Technology Conference. IPTC, 2021. http://dx.doi.org/10.2523/iptc-21803-ms.

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Abstract In recent years, various operating companies have been working on the processes of "Simplification, Standardization, Automation, Digitalization, and Optimization in several elements". To achieve this, there are tremendous subsea technology developments going on all over the world in many areas such as; design in terms of size and weight, improvement in reliability, advanced materials, flow assurance, digital tools, real time condition monitoring and control, installation and operation. The development of Subsea technology continues to be an important part of subsea field development projects to reduce the life cycle costs, increase recovery, provide solution to long tieback problems and challenges. PETRONAS ("the Company") is pursuing an Upstream Life Cycle Cost (CAPEX/OPEX) reduction approach under the Facilities of Future (FOF) program and mission called "Subsea Factory". The FOF target is to reduce Upstream life cycle cost by 40% starting from 2025 and Subsea Factory is one of the enablers to contribute to the reduction. There are four primary technologies focused on Subsea Factory: Subsea Separation, Subsea Multiphase Pump, Water Injection and Subsea Storage. The Subsea Multiphase Pump is one of the prioritized technologies for Subsea Factory to contribute to a 40% reduction. Subsea multiphase pump technology has great potential to reduce the CAPEX/OPEX and increase oil recovery, but due to the high equipment cost, huge topside space requirement, reliability and operating issues become very challenging and limit its application to operating companies. The Company collaborates with FASTsubsea AS on a Joint Industry Project to develop and qualify "the World first All Electric & Topside-less Subsea Multiphase Pump Technology". The uniqueness about this technology compared to commonly installed subsea pump is that it requires much less topside space as there is no need for variable speed drives or barrier fluid hydraulic power units. This paper describes the qualification and application of All-electric & Topside-less subsea multiphase pump technology in the Company - Subsea Factory mission, including: pain point with conventional subsea multiphase pumpthe Joint Industrial Project initiative with respect to technology development to pilot test to maturityimplementation of this technology and value creation in upcoming field development projectthe case study and potential of this technology for the Company future field development project
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Reports on the topic "Technologie FFF"

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Meot, Francois. RACCAM: An example of spiral sector scaling FFA technology. Office of Scientific and Technical Information (OSTI), April 2019. http://dx.doi.org/10.2172/1507116.

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Geyer, Anton. Assessment des FFG-Programms „F&E-Infrastrukturförderung“. Inspire research Beratungsgesellschaft m.b.H., March 2020. http://dx.doi.org/10.22163/fteval.2020.497.

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The FFG conducted two calls for the "R&D Infrastructure Funding" programme in 2016 and 2018. The programme was developed to take into account the central role of R&D infrastructure in generating new knowledge and technologies. The assessment of the FFG programme "R&D Infrastructure Funding" is intended to review the central points of the programme format and to support the FFG in making improvements and tightening up the programme design. The assessment focuses on the question of the extent to which the programme in its current form and implementation succeeds in achieving the intended goals. Both the tender modalities and the formal funding conditions and evaluation criteria for the applications will be reviewed.
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Geyer, Anton. Konzeptevaluierung der Initiative TECXPORT. FFG - Austrian Research Promotion Agency, July 2021. http://dx.doi.org/10.22163/fteval.2021.525.

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Das Bundesministerium für Klimaschutz, Umwelt, Energie, Mobilität, Innovation und Technologie (BMK) startete im Jahr 2017 die Initiative TECXPORT zur Unterstützung des Technologietransfers und des Technologieexports der österreichischen Wirtschaft. Mit der operativen Durchführung der Initiative hat das BMK die Österreichische Forschungsförderungsgesellschaft (FFG) beauftragt. In Vorbereitung und Begleitung der TECXPORT-Initiative hatte das BMK Studien in Auftrag gegeben, um die volkswirtschaftlichen Effekte des Technologie-Exports zu ermitteln. Diese Studien bestätigten den substanziellen Beitrag technologieexportierender österreichischer Unternehmen am Gesamtexportumsatz, wobei gleichzeitig nach wie vor Nachholbedarf im EU-Vergleich konstatiert wurde.
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Hepner, David J., Michael J. Hollis, and Charles E. Mitchell. Yawsonde Technology for the Jet Propulsion Laboratory (JPL) Free Flying Magnetometer (FFM) Program. Fort Belvoir, VA: Defense Technical Information Center, July 1998. http://dx.doi.org/10.21236/ada352980.

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Heckl, Eva, and Joachim Kaufmann. Evaluierung des Programms Forschungspartnerschaften – industrienahe Dissertationen. KMU Forschung Austria, December 2020. http://dx.doi.org/10.22163/fteval.2020.496.

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This evaluation was conducted on behalf of the Federal Ministry for Climate Action, Environment, Energy, Mobility, Innovation and Technology (BMK) and examines the programme Research Partnerships – Industrial PhD with regard to its concept, implementation, achievement of objectives and impacts. Based on the results of this analysis, the evaluators draw conclusions for the further development of the programme. The evaluation covers the period from 2014 to mid-2020. The methodological basis of the evaluation is a document analysis, a secondary data analysis of the FFG project monitoring data, expert interviews, an online survey of funding recipients and a workshop.
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Warta, Katharina, Tobias Dudenbostel, María del Carmen Calatrava Moreno, Francesca Guadagno, Simon Zingerle, Sandra Skok, and Harald Grill. Evaluierung des COMET-Programms. Technopolis Group - Austria, June 2021. http://dx.doi.org/10.22163/fteval.2022.524.

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Technopolis wurde im Mai 2020 vom Bundesministerium für Klimaschutz, Umwelt, Energie, Mobilität, Innovation und Technologie (BMK) und dem Bundesministerium für Digitalisierung und Wirtschaftsstandort (BMDW) mit der Evaluierung des COMET-Programms beauftragt. Die vorliegende Evaluierung bezieht sich auf die 25 aktuell existierenden Zentren. Der Fokus der Evaluierung liegt auf der Charakterisierung der COMET-Zentren und auf dem Monitoring- und Kennzahlensystem von COMET. Im Jahr der Corona-Pandemie wurden die Methoden angepasst, Interviews mit Stakeholdern und den Zentren wurden meist per Videocalls oder telefonisch geführt, geplante on-site Visits sowie internationale Workshops konnten nicht durchgeführt werden. Zentrale Quellen der Evaluierung sind eine Befragung der Zentren und der Unternehmens- und Wissenschaftspartner sowie die Datenbasis der FFG, die wir durch diverse Harmonisierungsschritte für neuwertige Auswertungen nutzbar machten. Dies umfasst insbesondere einen historischen Rückblick sowie eine Cluster- und Netzwerkanalyse. Die Auswartungen sind in zwei Dashboards angelegt, das Dashboard zur COMET-Befragung ist anonymisiert und daher öffentlich zugänglich.
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Nimmons, Michael J. Evaluation and Screening of Remedial Technologies for Uranium at the 300-FF-5 Operable Unit, Hanford Site, Washington. Office of Scientific and Technical Information (OSTI), August 2007. http://dx.doi.org/10.2172/912985.

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Tiefenthaler, Brigitte. Evaluierung des Netzwerks Altern. Endbericht. Technopolis Group - Austria, 2019. http://dx.doi.org/10.22163/fteval.2019.506.

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In 2015, the Federal Ministry of Education, Science and Research (BMBWF), together with the Federal Ministry of Transport, Innovation and Technology (BMVIT), the Austrian Research Promotion Agency (FFG) and other partners, founded the initiative "Strategic Networking Platforms in the Context of Major Societal Challenges", including such a platform on issues of demographic change. The BMBWF has commissioned the Austrian Platform for Interdisciplinary Ageing Issues(ÖPIA) with its implementation. The three-year BMBWF funding for the Ageing Network expired in mid-2019. Therefore, Department V/10 of the BMBWF commissioned Technopolis Group Austria to evaluate the Ageing Network. The aim of this evaluation was to form a basis for the decision on the further funding of the Network Ageing after the expiry of the current contract. To this end, we analysed and evaluated what has been achieved so far and developed recommendations for the future work of the Network Ageing. Translated with www.DeepL.com/Translator (free version)
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Pichler, Rupert. The Research Financing Act. A New Framework for Publicly Funded Research in Austria and its Impact on Evaluation. Fteval - Austrian Platform for Research and Technology Policy Evaluation, July 2021. http://dx.doi.org/10.22163/fteval.2021.514.

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On 7 July 2020, the National Council – the first chamber of the Austrian Parliament – passed a package of legislation introducing a new framework for the methods of allocating federal budgets to research, technology, and innovation (RTI). Its core is the Research Financing Act (RFA), complemented by several amendments to existing laws that are necessary for its implementation. Entry into force was on 25 July 2020, the amendments became effective as of 1 January 2021 (BGBl1. I No. 75/20202). The RFA is the biggest legislative project in the field of RTI policy since 2004 when the Research Funding Agency (FFG) was established (Pichler et al. 2007, pp. 329-336; Stampfer et al. 2010, pp. 775-776). For the first time, budget law regulations are now aligned with the needs of institutions performing or funding RTI (Pichler 2021). This article outlines the background and content of the RFA and concludes with a view on the significance of evaluation within the new system.
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Williams, Bruce A. Statement of Work for Direct Push Technology Characterization Borehole Installations During Fiscal Year 2006, 300-FF-5 Operable Unit. Office of Scientific and Technical Information (OSTI), November 2005. http://dx.doi.org/10.2172/889092.

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