Relevant bibliographies by topics / Metal flexibles

Academic literature on the topic 'Metal flexibles'

Author: Grafiati
Published: 14 March 2023

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Journal articles on the topic "Metal flexibles"

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Wang, T., H. Ye, and P. Groche. "Leichtbauprofile durch flexibles Rollsicken*/Lightweight profiles by flexible roller beading – A novel forming technology for the production of sheet metal profiles with variable cross-sections." wt Werkstattstechnik online 109, no. 10 (2019): 727–32. http://dx.doi.org/10.37544/1436-4980-2019-10-31.

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Im Sinne des Wandels der konventionellen Massenproduktion hin zur seriellen Maßanfertigung wurde das Verfahren „Flexibles Rollsicken“ entwickelt, welches die kontinuierliche Fertigung von Profilen mit veränderlicher Höhe erlaubt. Im Folgenden werden die Funktionsweise und Auslegungskriterien dieses neuartigen Umformverfahrens erläutert. Des Weiteren wird gezeigt, wie der Einsatz von durch flexibles Rollsicken hergestellten Halbzeugen die Umformgrenzen in nachgeschalteten Prozessen erweitern kann.   In the spirit of the change from conventional mass production to mass customization, the process “flexible roller beading” has been developed, which enables the continuous production of profiles with variable height. The following explains the operating principle and process design criteria. Furthermore, it is shown how the use of semi-finished products produced by flexible roller beading can expand the forming limits in downstream processes.
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Li Haoyu, 李昊昱, 张承君 Zhang Chengjun, 杨青 Yang Qing, 侯洵 Hou Xun, and 陈烽 Chen Feng. "激光制备液态金属基柔性电子及其应用." Chinese Journal of Lasers 49, no. 10 (2022): 1002505. http://dx.doi.org/10.3788/cjl202249.1002505.

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Liang, Suqing, Yaoyao Li, Yuzhen Chen, Jinbin Yang, Taipeng Zhu, Deyong Zhu, Chuanxin He, Yizhen Liu, Stephan Handschuh-Wang, and Xuechang Zhou. "Liquid metal sponges for mechanically durable, all-soft, electrical conductors." Journal of Materials Chemistry C 5, no. 7 (2017): 1586–90. http://dx.doi.org/10.1039/c6tc05358k.

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Foremny, Katharina, Steven Nagels, Michaela Kreienmeyer, Theodor Doll, and Wim Deferme. "Biocompatibility Testing of Liquid Metal as an Interconnection Material for Flexible Implant Technology." Nanomaterials 11, no. 12 (November 30, 2021): 3251. http://dx.doi.org/10.3390/nano11123251.

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Galinstan, a liquid metal at room temperature, is a promising material for use in flexible electronics. Since it has been successfully integrated in devices for external use, e.g., as stretchable electronic skin in tactile sensation, the possibility of using galinstan for flexible implant technology comes to mind. Usage of liquid metals in a flexible implant would reduce the risk of broken conductive pathways in the implants and therefore reduce the possibility of implant failure. However, the biocompatibility of the liquid metal under study, i.e., galinstan, has not been proven in state-of-the-art literature. Therefore, in this paper, a material combination of galinstan and silicone rubber is under investigation regarding the success of sterilization methods and to establish biocompatibility testing for an in vivo application. First cell biocompatibility tests (WST-1 assays) and cell toxicity tests (LDH assays) show promising results regarding biocompatibility. This work paves the way towards the successful integration of stretchable devices using liquid metals embedded in a silicone rubber encapsulant for flexible surface electro-cortical grid arrays and other flexible implants.
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Opel, Simon, Thomas Schneider, and Marion Merklein. "Manufacturing of Geared Sheet Metal Components Using Flexible Rolled Tailored Blanks." Key Engineering Materials 554-557 (June 2013): 1459–70. http://dx.doi.org/10.4028/www.scientific.net/kem.554-557.1459.

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Manufacturing of functional sheet metal products with integrated gear teeth by form-ing can be realised with the application of bulk forming operations on sheet metals. Due to the desired part geometry simultaneous 2D and 3D stress and strain states occur during the forming operations. The main challenges of sheet-bulk metal form-ing are high resulting forming forces and the demand on a specific control of the material flow. In addition, there is a distinctive interaction between blank thickness and resulting part quality. To meet these challenges at high material efficiency, the application of tailored blanks with a defined sheet thickness distribution is a promising way. The process adapted semi-finished used in the presented work are formed by a flexible rolling process. First of all, the forming concept for the realization of geared sheet metal components using flexible rolled tailored blanks is presented. Afterwards, the developed rolling machine to produce rotational symmetric tailored blanks is shown, as well as the fundamental process influences during rolling. Based on that, the development of suitable process strategies to produce tailored blanks with a thickened sheet edge is presented. The further processing of those tailored blanks for the realization of external geared sheet metal components will show the advantages compared to the application of conventional sheet metals of constant sheet thickness. Therefore the concept of a combined deep drawing and ironing process is presented. The results show, that on the one hand the material efficiency is increased in comparison to the usage of conventional sheets of the same maximum thickness. On the other hand, the application of flexible rolled tailored blanks improves the accuracy of shape of the gear teeth. Both approaches prove that the application of flexible rolled is an appropriate procedure to enhance the limits of using conventional sheet metals within sheet-bulk metal forming.
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Wang, Mao Lu, Li Jun Yang, and Yang Wang. "Investigation on the Mechanisms of Flexible Sheet Metal Forming Using Plasma Arc." Materials Science Forum 532-533 (December 2006): 93–96. http://dx.doi.org/10.4028/www.scientific.net/msf.532-533.93.

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An investigation on the mechanism of flexible sheet metal forming using plasma arc have been performed in this paper. The experimental results show that temperature gradient mechanism (TGM) is caused by a steep temperature gradient across the sheet metal thickness, which will generates bending towards the plasma arc, while buckling mechanism (BM) usually causes sheet metals to bend away from the plasma arc on the condition that the plasma arc diameter is large compared to the sheet metal thickness and the scanning speed is low. The strain-hardening effects and phase transformation effects were also conducted in the investigation, which can be of great significance for the micro hardness and deformation of sheet metal in the heated area. The investigation reveals the mechanisms of sheet metal forming using plasma arc, and provides theoretical foundation for its industry application.
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Cha, Wu-Shin, Junsik Lee, Malkeshkumar Patel, Kibum Lee, and Joondong Kim. "Flexible and Transparent Heater with Oxide/Metal/Oxide Structure." Transactions of The Korean Institute of Electrical Engineers 72, no. 1 (January 31, 2023): 87–92. http://dx.doi.org/10.5370/kiee.2023.72.1.87.

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Watson, Trystan, Gavin Reynolds, David Wragg, Geraint Williams, and David Worsley. "Corrosion Monitoring of Flexible Metallic Substrates for Dye-Sensitized Solar Cells." International Journal of Photoenergy 2013 (2013): 1–8. http://dx.doi.org/10.1155/2013/791438.

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Two techniques for monitoring corrosion within a dye-sensitized solar cell (DSC) system are presented, which enable continuous, high sensitivity, in situ measurement of electrolyte breakdown associated with DSCs fabricated on metals. The first method uses UV/Vis reflectance spectrophotometry in conjunction with encapsulation cells, which incorporate a 25 μm thick electrolyte layer, to provide highly resolved triiodide absorption data. The second method uses digital image capture to extract colour intensity data. Whilst the two methods provide very similar kinetic data on corrosion, the photographic method has the advantage that it can be used to image multiple samples in large arrays for rapid screening and is also relatively low cost. This work shows that the triiodide electrolyte attacks most metals that might be used for structural applications. Even a corrosion resistant metal, such as aluminium, can be induced to corrode through surface abrasion. This result should be set in the context with the finding reported here that certain nitrogen containing heterocyclics used in the electrolyte to enhance performance also act as corrosion inhibitors with significant stabilization for metals such as iron. These new techniques will be important tools to help develop corrosion resistant metal surfaces and corrosion inhibiting electrolytes for use in industrial scale devices.
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Ankin, A. V., and A. S. Adeev. "Experience and prospect of development and approbation of combined machining of non-rigid shafts." Izvestiya MGTU MAMI 3, no. 2 (January 20, 2009): 123–25. http://dx.doi.org/10.17816/2074-0530-69615.

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The paper examines the dimension making procedure for combined cutting-deforming part process of flexible shafts. The best way to remove the flexibly-restored metal is to use the tools with zero cutting rim. In terms of micro geometry of the part surface the cross-section of cutter plate influences the cross-section of the surface.
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Pfisterer, J., K. Steinmair, and G. Schmidberger. "FCF - Flexible production of profiles and sections without tool change." Revue de Métallurgie 99, no. 7-8 (July 2002): 671–77. http://dx.doi.org/10.1051/metal:2002195.

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Dissertations / Theses on the topic "Metal flexibles"

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Seehamart, Kompichit. "Investigation of the diffusion mechanisms of several hydrocarbons in the Metal-Organic-Framework Zn(tbip)." Doctoral thesis, Universitätsbibliothek Leipzig, 2011. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-68125.

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Most of the computer simulations of molecules in Metal-Organic Frameworks (MOFs) to be found in the literature are done with rigid framework. But, Molecular Dynamics (MD) simulations of the self-diffusivity, Ds, of ethane within the one-dimensional 4.5 Å channels of the MOF type Zn(tbip)(H2 tbip = 5-tert-butyl isophthalic acid) presented in this work have shown not only quantitative, but also qualitative, differences in the Ds values for fixed and flexible lattices. Particularly, the dependence of Ds upon the concentration of molecules, c, is strongly influenced by the lattice flexibility. The reasons for this influence are investigated with the aid of probability density plots, free energy landscapes and barriers, along with a determination of the structural changes accompanying increasing c. It is found that for flexible lattices, the tighter, more constrained parts of the channels become wider at higher c; this allows more molecules to diffuse in the central region of the channels. The investigations for Zn(tbip) have been extended to three equimolar mixtures of ethane/ethane, CO2/ethane and CO2/methanol. The simulations take into account the lattice flexibility. The diffusional characteristics are discussed in relation to molecule properties and lattice geometry. The results show that Zn(tbip) may be a useful material for separating methane/ethane and CO2/ethane mixtures at low concentrations, and CO2/methanol mixtures at high concentrations. The temperature and concentration dependence of the self-diffusivity of propane diffusion in Zn(tbip) have been investigated as well by performing normal MD and hyper-MD with bias potential simulations. The obtained temperature dependence of the self-diffusivities is analyzed using an Arrhenius relationship, yielding the activation energy to be 9.53 kJ/mol and the pre-exponential factor to be 4.48×10-9 m2s-1. Using this hyper-MD method, interesting mechanisms of the propane molecules able to pass each other and exchange their sites in the channels can be observed. Because of mutual hindrance of propane molecules, the propane self-diffusivities decrease with increasing concentration.
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Rial, Djihad. "Modélisation tridimensionnelle des flexibles hydroformés et tressés en statique et en fatigue." Electronic Thesis or Diss., Compiègne, 2015. http://www.theses.fr/2015COMP2184.

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Dans cette étude, le comportement mécanique des flexibles ondulés est étudié expérimentalement et numériquement. Afin de surmonter l’important coût de calcul, des solutions analytiques de la théorie des coques toriques ont été utilisées pour homogénéiser le comportement global en utilisant des poutres simples à propriétés équivalentes. Ensuite, le modèle analytique proposé a été vérifié en le comparant avec des modèles éléments finis en trois dimensions. Des essais expérimentaux ont été conçus pour étudier l’expansion sous pression et le comportement en flexion de ces structures. Il est démontré que lorsque le modèle est implémenté dans un code d’éléments finis, il donne des résultats acceptables avec une réduction considérable temps de calcul. D’autre part, l’importance de la prise en compte des contraintes résiduelles résultant de l’opération d’hydroformage a été montrée. Cette étude consiste aussi à simuler le comportement des tresses métalliques numériquement en utilisant différentes approches – une approche "micro-échelle" directe avec des éléments solides 3D ou des éléments de poutres pour chaque fil métallique, ainsi que des approches homogénéisées où des éléments finis continus sont utilisés pour représenter soit l’ensemble de la structure qui est le modèle "macro-échelle", soit chaque groupe de fils qui est le modèle "méso-échelle". Ces modèles sont comparés par la suite à des résultats expérimentaux, qui sont: un essai de traction simple et un essai d’expansion sous pression. Une investigation numérique et expérimentale de la tenue en fatigue des flexibles métalliques a été présenté. Des échantillons de flexibles ont été soumis à une série de tests de fatigue lors desquels l’amplitude de chargement mécanique était constante, avec une pression interne continuelle similaire aux conditions de travail. Sachant que ces configurations de chargements génèrent des contraintes (déformations) tridimensionnelles, la durée de vie de la structure a été extraite en termes de nombre de cycles à l’initiation de fissures (perte de pression interne). De plus, un modèle d’éléments finis a été créé en tenant en compte les contraintes résiduelles résultant du procédé d’hydroformage afin d’estimer et de comparer avec l’expérience la durée de vie en fatigue. Cette prédiction a été réalisée à l’aide de différentes approches : une approche contrainte-déformation qui est largement utilisée dans les codes commerciaux, une approche de plan critique, une approche énergétique et une approche basée sur le cumul d’endommagement
Hydroformed flexible tubes are essential structures used in several industrial sectors such as the automotive sector, the aviation industry or energy production, such as the production of renewable energy in solar thermal energy farms where the panels must both be supplying fluid along and follow the direction of the sun. These structures serve as connecting parts between the rigid parts different mechanisms, primarily used for damping vibrations and acoustic emissions, and, as their name suggests, they also allow flexibility and pressure expansion, which considerably improves the fatigue strength. The mastery and prediction of the mechanical behavior of these structures are very important from a safety point of view and an economic point of view. Indeed, their accidental breakage can cause very serious consequences due to their use in sensitive areas such as the nuclear industry. In this context, this thesis was launched between Compiegne University of Technology and industrial BOA-group to create digital approaches to behavioral predictions and estimating the life braided hoses that take into account extreme conditions (temperature and pressure) and the forming parameters and properties of the materials used. In terms of use, these products are subject to thermomechanical charge-discharge cycles and vibrations can induce complex deformed piping of wear due to friction and damage by fatigue, The purpose of the study is to develop a numerical approach validated by the experience to certify products and improve the design. This approach will allow to estimate the lifetime of braided wavy taking into account: - the initial state of the product after forming and assembly, - thermomechanical stresses, is defined by the specification, or encountered in specific use cases, - vibrations encountered during use in real cases. The expected results are the life of the products from a calculation model of their behavior using the characteristics of the materials and interaction braid / tube
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Cojocaru, Ludmila. "Films d’oxydes semi-conducteurs nanoporeux et nanocristallins pour dispositifs photovoltaïques hybrides." Thesis, Bordeaux 1, 2012. http://www.theses.fr/2012BOR14630/document.

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Dans le contexte de la mise au point de dispositifs photovoltaïques efficaces, bon marché et respectueux de l’environnement, la synthèse d’oxydes métalliques semi-conducteurs tels que SnO2, Zn2SnO4 et WO3 de morphologies et textures diverses a été développée afin d’élaborer des photoanodes poreuses pour cellules solaires à colorant. D’après les études réalisées par différentes méthodes (MEB, MET, DRX et BET), les matériaux obtenus présentent des caractéristiques texturales, morphologiques et structurales appropriées pour l’application visée. Des cellules solaires à colorant ont donc été réalisées à partir de ces oxydes, puis différents paramètres influençant leurs performances ont été optimisés afin d’améliorer l’efficacité de la conversion photovoltaïque. Notamment l’influence positive de différents traitements des photoanodes (i.e. solution aqueuse de TiCl4 ou traitement à l’eau) sur les rendements de conversion énergétique et la stabilité des dispositifs a été démontrée. Ainsi, des performances comparables ou supérieures à l’état de l’art ont été atteintes pour les systèmes à base de SnO2. Ces performances ont ensuite été interprétées en déterminant les processus électroniques et ioniques ayant lieu dans ces cellules par différentes méthodes physiques (mesures de tension de seuil et de décroissance de circuit-ouvert, spectroscopie d’impédance). Enfin, des électrodes réalisées à partir de WO3 déposé sur substrats flexibles ont démontré des propriétés électrochromes très prometteuses ce qui ouvre de nouvelles perspectives dans le domaine de l’affichage
In the context of the development of efficient, low-cost and environmentally friendly photovoltaic devices, the synthesis of metal-oxide semiconductors such as SnO2, Zn2SnO4 and WO3 with various textures and morphologies have been developed in order to achieve nanoporous photoanodes for dye-sensitized solar cells. According to studies carried out by different characterization methods (SEM, TEM, XRD and BET), the resulting materials show interesting features for the expected application. Dye solar cells were then fabricated from photoanodes processed with these oxides and several parameters influencing their performance were optimized to improve the overall conversion efficiency. In particular, the beneficial effect of different treatments of the photoanodes (ie aqueous TiCl4 or water treatment) on the power conversion efficiency and the stability of the devices has been evidenced. Thus, state-of-the art or, even, record efficiencies were reached in the case of SnO2-based systems. These performances were then rationalized by determining the electronic and ionic processes occurring in these devices by various physical methods (threshold voltage and open-circuit photovoltage decay measurements, electrochemical impedance spectroscopy). Finally, electrodes based on WO3 and deposited on flexible substrates have shown very promising electrochromic properties, which opens up new prospects in the field of smart displays
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Schneemann, Andreas, Volodymyr Bon, Inke Schwedler, Irena Senkovska, Stefan Kaskel, and Roland A. Fischer. "Flexible metal–organic frameworks." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2014. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-149990.

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Advances in flexible and functional metal–organic frameworks (MOFs), also called soft porous crystals, are reviewed by covering the literature of the five years period 2009–2013 with reference to the early pertinent work since the late 1990s. Flexible MOFs combine the crystalline order of the underlying coordination network with cooperative structural transformability. These materials can respond to physical and chemical stimuli of various kinds in a tunable fashion by molecular design, which does not exist for other known solid-state materials. Among the fascinating properties are so-called breathing and swelling phenomena as a function of host–guest interactions. Phase transitions are triggered by guest adsorption/desorption, photochemical, thermal, and mechanical stimuli. Other important flexible properties of MOFs, such as linker rotation and sub-net sliding, which are not necessarily accompanied by crystallographic phase transitions, are briefly mentioned as well. Emphasis is given on reviewing the recent progress in application of in situ characterization techniques and the results of theoretical approaches to characterize and understand the breathing mechanisms and phase transitions. The flexible MOF systems, which are discussed, are categorized by the type of metal-nodes involved and how their coordination chemistry with the linker molecules controls the framework dynamics. Aspects of tailoring the flexible and responsive properties by the mixed component solid-solution concept are included, and as well examples of possible applications of flexible metal–organic frameworks for separation, catalysis, sensing, and biomedicine.
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Music, Omer. "Flexible asymmetric spinning." Thesis, University of Cambridge, 2011. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.609554.

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Abrari, Farid. "Multi-axis milling of flexible parts /." *McMaster only, 1998.

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Farshbaf, Mohamad Reza. "Mixed metal forming/machining flexible manufacturing system." Thesis, Open University, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.277924.

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Elghawail, Ali Mohamed. "Flexible forming of 3-D metal panels." Thesis, University of Birmingham, 2018. http://etheses.bham.ac.uk//id/eprint/8252/.

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The process of sheet metal forming is commonly used to create 3-D surfaces in, e.g., aircrafts and automobiles. Stamping is one of most common sheet metal forming processes but traditional forming processes which have been developed for mass production are inflexible and expensive, and economically unsuitable for small-scale production. More appropriate for small-batch and prototype production are flexible forming methods such as multi-point forming (MPF) which have been developed in recent years. A pair of opposed reconfigurable tools containing pin matrices could replace traditional solid stamping tools. Based on this technique, the construction of sheet metal forming tools becomes flexible and fast. Springback, caused by elastic recovery and release of residual stress, is an unavoidable issue in all sheet metal forming and significantly affects the geometrical precision of the products. Springback is a defect, and if it is beyond permissible tolerance it will adversely affect the assembly process such as distortion of sub-assemblies and poor fit-up during welding. Estimation of springback remains an important and challenging issue for the sheet metal industry. Based on the ABAQUS software, 3-D finite element models were generated, with the required constraints and boundary conditions described and applied in the simulation. The process of multi-point forming and springback were simulated by combining explicit and implicit algorithms. The influence of some significant working parameters, such as radius of forming curvature, blank holder force and elastic cushion thickness on final product quality (springback, thickness variation and wrinkling) has been investigated.
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Mendes, Ricardo Faria. "Metal-organic frameworks based on flexible bridges." Doctoral thesis, Universidade de Aveiro, 2017. http://hdl.handle.net/10773/22468.

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Doutoramento em Química
Esta tese pretende apresentar o trabalho desenvolvido na preparação de novos Polímeros de Coordenação ou Redes Metalo-Orgânicas de baixa dimensão (1D e 2D) pela auto-montagem de lantanídeos e ligandos orgânicos altamente flexíveis. Numa primeira etapa as condições ideais foram optimizadas utilizando abordagens sintéticas distintas: condições hidrotérmicas e de one-pot, o que permitiu o isolamento de cristais grandes; e a síntese por microondas, que foi a abordagem ideal para reduzir significativamente o tempo de reacção. Todos os materiais foram caracterizados utilizando a combinação de várias técnicas, como FTIR, análise elementar, RMN de estado sólido, microscopia electrónica (SEM e EDS) e termogravimetria. As estruturas cristalinas foram resolvidas utilizando análise de difracção de raios X de cristal único. Num segundo passo, os materiais de baixa dimensão foram utilizados como precursores para obter MOFs de dimensão superiores por transformação Cristal- Cristal, que foram seguidos de perto por análise de raios-X de cristal único. No último passo, as propriedades de alguns materiais foram investigadas, como o uso como potencial catalisadores heterogéneos e como condutores protónicos. Alguns materiais mostraram actividade catalítica notável em várias reacções orgânicas, enquanto um mostrou a maior condução protónica registada até agora para qualquer tipo de material.
This thesis aims to present the work developed in the preparation of new Coordination Polymers or Metal-Organic Frameworks with low dimensions (1D and 2D) by the self-assembly of lanthanides and highly flexible organic linkers. In a first step the ideal conditions were screened using distinct synthetic approaches: hydrothermal and one-pot conditions, which allowed the isolation of large crystals; and microwaveassisted synthesis, which was the ideal approach to reduce significantly the time of reaction. All materials were characterized using the combination of several techniques, such as FTIR, elemental analysis, solid-state NMR, electron microscopy (SEM and EDS) and thermogravimetry. The crystal structures were unveiled using singlecrystal X-ray diffraction analysis. In a second step, the low dimensional materials were used as precursors to obtain higher dimensional MOFs by Single-Crystal to Single-Crystal transformation, which were followed closely by single-crystal X-ray analysis. In a final step, the properties of some materials were investigated, with potential use as heterogeneous catalysts and proton conductors. Some materials showed remarkable catalytic activity in several organic reactions, while one showed the highest proton conduction registered up to now for any kind of material
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Hong, Jinchul 1977. "Numerical models for scoring failures of flexible metal to metal face seals." Thesis, Massachusetts Institute of Technology, 2005. http://hdl.handle.net/1721.1/30339.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2005.
Includes bibliographical references (leaves 106-108).
The flexible metal to metal face seals (FMMFS) has unique features including much more flexibility in the circumferential direction than in the radial direction, identical rotating and stationary seals, and a loading mechanism using elastomeric rings. This thesis work is the first attempt to explain scoring failures of this unique type of mechanical face seal. Numerical models and new scoring failure criteria were developed to explain different scoring failures of the FMMFS. The numerical models consider interactions among seal surface deflections, lubrication in the sealing band and thermal effects simultaneously. The numerical models were validated from comparisons with experiments and applied to scoring failure tests. The new scoring failure criterion successfully predicted the likelihood of scoring failures for each seal pair at given loads and speeds. From in-depth analysis of the seal pairs with low and high scoring failure speeds, it has been shown that discontinuous contact patterns can increase scoring resistance of the seal pair. These discontinuous contact patterns are created by irregular surface profiles of the sealing band. Irregular surface profiles can decrease high temperature regions by reducing superposition of temperatures and thermal conduction resistance, and finally delay scoring failures.
by Jinchul Hong.
Ph.D.
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Books on the topic "Metal flexibles"

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Guo, Xunzhong, ed. Flexible Metal Forming Technologies. Singapore: Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-1348-8.

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Sheet Metal and Air Conditioning Contractors' National Association (U.S.). HVAC duct construction standards: Metal and flexible. Vienna, Va: The Association, 1985.

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Sibikin, Mihail, A. N. Chernenko, and Yuriya Voronkin. Technological equipment. Metal cutting machines. ru: INFRA-M Academic Publishing LLC., 2023. http://dx.doi.org/10.12737/1061257.

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The textbook discusses and describes the technological equipment of machine tool construction: metalworking machines; standard mechanisms and devices for machine tools; purpose, device, kinematics, adjustment of machines of various groups and types; multipurpose and aggregate machines; precision equipment; automatic lines; flexible production module; flexible production system; testing of machines; indicators of the technical level and reliability of technological equipment; diagnostics of machine systems. Meets the requirements of the federal state educational standards of secondary vocational education of the latest generation. For students of secondary vocational education institutions. It can be useful for professional training of technicians and craftsmen.
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Weber, Thomas. Ein Beitrag zur Planungssystematik für die automatisierte flexible Blechteilefertigung. Berlin: Springer, 1987.

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A, Askalonova T., and Altaĭskiĭ politekhnicheskiĭ institut im. I.I. Polzunova., eds. Otdelochno-chistovye metody obrabotki i instrumenty avtomatizirovannykh proizvodstv: Mezhvuzovskiĭ sbornik. Barnaul: Altaĭskiĭ politekhn. in-t im. I.I. Polzunova, 1991.

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1919-, Lange Kurt, Dohmen H. G. 1927-, Deutsche Forschungsgemeinschaft, and Arbeitsgemeinschaft Umformtechnik (Germany), eds. Präzisionsumformtechnik: Ergebnisse des Schwerpunktes "Präzisionsumformtechnik" der Deutschen Forschungsgemeinschaft, 1981 bis 1989. Berlin: Springer-Verlag, 1990.

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Hu, Yating. Carbon and Metal Oxides Based Nanomaterials for Flexible High Performance Asymmetric Supercapacitors. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-10-8342-6.

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Promberger, Markus. Was wird aus der Arbeitszeit?: Modernisierung der betrieblichen Arbeitszeiten in der Metallindustrie zwischen Verkürzung, Pluralisierung und Differenzierung. München: R. Hampp, 1993.

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Qian, Ying. Application of flexible functional forms to substitutability among metals in U.S. industries. Washington, DC: International Commodity Markets, International Economics Dept., World Bank, 1990.

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Hartmut, Hirsch-Kreinsen, and Schultz-Wild Rainer, eds. Rechnerintegrierte Produktion: Zur Entwicklung von Technik und Arbeit in der Metallindustrie. Frankfurt/Main: Campus, 1986.

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Book chapters on the topic "Metal flexibles"

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Hussain, Aftab M. "Metal Oxide Semiconductors." In Introduction to Flexible Electronics, 81–94. Boca Raton: CRC Press, 2021. http://dx.doi.org/10.1201/9781003010715-8.

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Peng, Huisheng, Yifan Xu, Jian Pan, Yang Zhao, Lie Wang, and Xiang Shi. "Flexible Metal-Air Batteries." In Metal-Air Batteries, 367–96. Weinheim, Germany: Wiley-VCH Verlag GmbH & Co. KGaA, 2018. http://dx.doi.org/10.1002/9783527807666.ch13.

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Mo, Runwei. "Flexible Metal-Air Batteries." In Metal-Air Batteries, 347–59. Boca Raton: CRC Press, 2023. http://dx.doi.org/10.1201/9781003295761-24.

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Jackson, Warren B. "Flexible Transition Metal Oxide Electronics and Imprint Lithography." In Flexible Electronics, 107–42. Boston, MA: Springer US, 2009. http://dx.doi.org/10.1007/978-0-387-74363-9_5.

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Huang, YongAn, YeWang Su, and Shan Jiang. "Liquid Metal-Based Structure Design for Stretchable Electronics." In Flexible Electronics, 351–80. Singapore: Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-6623-1_13.

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Grüber, Markus, Reiner Kopp, and Gerhard Hirt. "Flexible Rolling." In 60 Excellent Inventions in Metal Forming, 213–18. Berlin, Heidelberg: Springer Berlin Heidelberg, 2015. http://dx.doi.org/10.1007/978-3-662-46312-3_33.

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Music, Omer, and Julian M. Allwood. "Flexible Asymmetric Spinning." In 60 Excellent Inventions in Metal Forming, 173–78. Berlin, Heidelberg: Springer Berlin Heidelberg, 2015. http://dx.doi.org/10.1007/978-3-662-46312-3_27.

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Baptayev, Bakhytzhan, Yerbolat Tashenov, and Mannix P. Balanay. "Metal Oxide-Based Flexible and Wearable Sensors." In Flexible and Wearable Sensors, 135–48. Boca Raton: CRC Press, 2023. http://dx.doi.org/10.1201/9781003299455-9.

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Neugebauer, Reimund, Eberhard Kunke, Hans Bräunlich, and Angela Göschel. "Geometry-Flexible Production – a Production Engineering Challenge." In Sheet Metal 2007, 301–8. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-437-5.301.

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Hurst, Steve. "3. Flexible moulds for the mass-production of wax patterns." In Metal Casting, 25–37. Rugby, Warwickshire, United Kingdom: Practical Action Publishing, 1996. http://dx.doi.org/10.3362/9781780442792.003.

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Conference papers on the topic "Metal flexibles"

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Rytter, Jan. "Qualification Approach to Unbonded Flexible Pipes With Fibre Reinforced Armour Layer." In ASME 2004 23rd International Conference on Offshore Mechanics and Arctic Engineering. ASMEDC, 2004. http://dx.doi.org/10.1115/omae2004-51175.

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The future water depth capabilities for unbonded flexible pipes is being pushed by NKT Flexibles I/S through the development of an innovative flexible pipe structure, taking full advantage of the material characteristics of metallic, polymeric and fibre reinforced materials. The fluid tight liner and possible insulation of this pipe structure are supported by an inner armour, capable of carrying the external hydrostatic pressure, clamp and crushing loads, as well as axial compression load, and an outer armour, consisting of two cross wound layers of carbon/epoxy composites, carrying the internal pressure as well as end cap forces and applied tension. A permeable and radially flexible outer layer protects the composite armour. Combining known and well-proven flexible pipe technologies and new solutions for materials, structure and functionality of the flexible pipe, positions this future product outside the present industry standards for flexible pipes, e.g. API-17J. The analysis tools used for the conventional flexible pipes are validated by NKT according to the API-17J specification. The API-17J describes load cases and corresponding allowable utilization ratios, stated as design criteria. However, this approach is not directly applicable to the composite pipe, where the same analysis tools will be used, but the material in one of the two primary load bearing layers is made of fibre reinforced polymer, a material class not covered by the API allowable utilization factors. The DNV offshore standard DNV-OS-C501 considers any offshore structure in which the load bearing material is a composite. An accompanying Recommended Practice DNV-RP-F202 for composite risers has also been issued, but is not applicable to the composite flexible pipe. The design equations of the DNV standard are formulated in the so-called Load and Resistance Factor Design (LRFD) format, where partial safety factors are applied to the load effects and to the resistance variables that enter the design equations. The DNV standard DNV-OS-C501 covers composite materials and composite metal interfaces of a structure, metal parts should be designed according to other relevant standards. The API standard can therefore be used for the metal parts. One of the challenges in using this combined approach is the different ways loads are defined in the two standards. In short, this will result in a conventional API design check of the inner armour, the polymer layers, and the secondary layers, whereas the composite tensile armour, special intermediate layers and the interfaces will be analyzed with composite specific tools based on the criteria derived from the DNV standard. The qualification procedure is described and exemplified in the following.
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Rath, J. E. "Die-less forming of fiber-reinforced thermoplastic sheets and metal wire mesh." In Sheet Metal 2023. Materials Research Forum LLC, 2023. http://dx.doi.org/10.21741/9781644902417-5.

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Abstract. The growing market for fiber-reinforced thermoplastics (FRTP) requires new flexible production processes for prototype and small series production, as conventional forming techniques involving molds are not cost efficient in these cases. Inspired by incremental sheet metal forming (ISF), an alternative manufacturing processes for the forming of FRTP with just two robot guided standard tools is outlined. To maintain a locally formed shape in the heated, flexible fabric, auxiliary wire mesh metal is used as it has similar deformation mechanisms, especially shearability, while being sufficiently self-supporting. Feasibility of the approach is discussed and investigated in basic experiments.
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Kräusel, V. "Investigation of the suitability of a tool element manufactured by fused filament fabrication for incremental sheet metal forming." In Sheet Metal 2023. Materials Research Forum LLC, 2023. http://dx.doi.org/10.21741/9781644902417-10.

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Abstract. Incremental sheet forming (ISF) constitutes a flexible production process for sheet materials for small to medium batch sizes, in which the geometry of the part is created via the movement of a stylus. ISF can be carried out with or without support from the opposite side. With the use of dies, the geometry deviation can be reduced. In order to be able to guarantee an overall flexible process, the ability to produce dies quickly and individually from the lot size one is necessary. In addition to milling, which has been the primary method used up to date, additive manufacturing (AM) also meets the requirements for flexible die production. To investigate the suitability of additive manufacturing to produce dies for ISF, a pyramid-shaped die was fabricated from polylactic acid (PLA) using the fused filament fabrication (FFF) process. This die was used for three incremental sheet metal forming operations using pure aluminum sheets and was compared with an identical milled tool. Based on the measurement results, the suitability of 3D printed dies for ISF is examined, and opportunities as well as application limits for such dies are discussed.
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Krutz, P. "Development and testing of a flexible test bench for high-speed impact shear-cutting with linear motors." In Sheet Metal 2023. Materials Research Forum LLC, 2023. http://dx.doi.org/10.21741/9781644902417-3.

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Abstract. Due to the use of high-strength steels to achieve lightweight construction goals, conventional shear cutting processes are reaching their limits. Therefore, so-called high-speed impact cutting (HSIC) is used to achieve the required cut surface qualities. A new machine concept consisting of linear motors and an impact mass is presented to investigate HSIC. It allows all relevant parameters to be flexibly adjusted and measured. The design and construction of the test bench are described. The validation was performed with HSIC of a mild deep-drawing steel sheet. The velocities as well as the cut surface were analysed.
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Sammons, Patrick M., Douglas A. Bristow, and Robert G. Landers. "Height Dependent Laser Metal Deposition Process Modeling." In ASME/ISCIE 2012 International Symposium on Flexible Automation. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/isfa2012-7238.

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Laser Metal Deposition (LMD) is used to construct parts in a layer-by-layer fashion. The heat transfer from the melt region to the solid region plays a critical role in the resulting material properties and part geometry. The heat transfer dynamics can change significantly as the layers increase, depending on the geometry of the sub layers. However, this effect is unaccounted for in previous analytical models, which model only a single layer. This paper develops a layer dependent model of the LMD process for the purpose of designing advanced layer-to-layer controllers. A lumped-parameter model of the melt pool is introduced and then extended to include elements that capture height dependent effects on the melt pool shape. The model dynamically relates the process inputs (e.g., laser power, material mass flow rate, and scan speed) to the melt pool morphology and temperature. A finite element analysis is then conducted to determine the effect of scan speed and track height on the solid region temperature gradient at the melt pool solidification boundary. The results of a simulation study are compared to experimental results in the literature and demonstrate that the model is able to successfully predict changes in melt pool width as track height increases, which single layer models cannot.
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Schmid, D. "Definition and validation of a customized classification system for sheet metal bending parts." In Sheet Metal 2023. Materials Research Forum LLC, 2023. http://dx.doi.org/10.21741/9781644902417-40.

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Abstract. The industry demands an increasing individualization, which leads to a rising variety of sheet metal parts. The consequence for sheet metal manufacturers are larger amounts of product data, smaller batch sizes and a larger quantity of different parts per year. The challenge for an efficient company is the availability and use of the corporate product data. Classification is a suitable tool for organizing corporate product data sets. In order to better reflect the individualization of customer demands and the resulting flexible manufacturing processes in a classification system, a method is needed to adapt the classification system based on the frequently used feature list. In the context of this paper, features are defined and parts are classified that are manufactured with the technology of air bending. It is a contribution to the creation of more precise approaches to the sheet metal part classification with simultaneous validation by a measurable characteristic. Focus is placed on the validation of the system with empirical measurement data. This allows every company to optimize and validate their own classification system.
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Chen, Xueyong, Todd Sparks, Jianzhong Ruan, and Frank Liou. "Study of Ultrasonic Vibration Laser Metal Deposition Process." In ASME/ISCIE 2012 International Symposium on Flexible Automation. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/isfa2012-7124.

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This paper presents the usage of ultrasonic vibration in laser direct deposition of 316L (stainless steel) powder. Ultrasonic vibration is used to refine the crystalline structure of the deposition. The ultrasonic vibration device vibrates in the laser deposition system along the Z axis while the system is performing metal deposition. A design of experiments approach is applied in studying the effect of vibration on the deposited material. Vibration during deposition led to grain refinement and an increase in micro-hardness. Also, vibration frequency is a significant factor in determining microstructure.
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Holzmüller, M. "Proof of concept for incremental sheet metal forming by means of electromagnetic and electrohydraulic high-speed forming." In Sheet Metal 2023. Materials Research Forum LLC, 2023. http://dx.doi.org/10.21741/9781644902417-2.

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Abstract. The combination of incremental sheet metal forming and high-speed forming offers new possibilities for flexible forming processes in the production of large sheet metal components of increased complexity with relatively low forming energies. In this paper, the general feasibility and process differences between the pulse-driven high-speed forming technologies of electrohydraulic and electromagnetic forming were investigated. An example component made of EN AW 6016 aluminum sheet metal was thus formed incrementally by both processes and the forming result evaluated by an optical 3D measurement system. For this purpose, a forming strategy for electromagnetic incremental forming (EMIF) was developed, tested and adapted to the electrohydraulic incremental forming process (EHIF). The discharge energy, the tool displacement and the pressure field of the forming zone were determined as relevant parameters for the definition of an adequate tool path strategy. It was found that the EHIF process is less affected by larger distances between the tool and the blank, while this is a critical variable for force application to the component during EMIF. On the other hand, the more uniform pressure distribution of the EMIF process is advantageous for forming large steady component areas.
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Su, Ru, Qingsong Li, Qiong Tian, and Zhiyuan Liu. "Liquid Metal for Soft-Hard Interface in Stretchable Electronics." In 2022 IEEE International Flexible Electronics Technology Conference (IFETC). IEEE, 2022. http://dx.doi.org/10.1109/ifetc53656.2022.9948501.

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Wang, Cong, Ben Bin Xu, Jonathan G. Terry, Stewart Smith, Anthony J. Walton, and Yifan Li. "Metal-Elastomer Surface Deformation Control on Super-Compressible Strain Transducer Arrays." In 2018 International Flexible Electronics Technology Conference (IFETC). IEEE, 2018. http://dx.doi.org/10.1109/ifetc.2018.8583995.

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Reports on the topic "Metal flexibles"

1

Allendorf, Mark D., Peter J. Hesketh, Kenneth A. Gall, A. Choudhury, J. Pikarsky, Leanne Andruszkiewicz, Ronald J. T. Houk, and Albert Alec Talin. Stress-induced chemical detection using flexible metal-organic frameworks. Office of Scientific and Technical Information (OSTI), September 2009. http://dx.doi.org/10.2172/993628.

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Forrest, Stephen R. Inverted Organic Photovoltaic Cells on Lightweight, and Flexible Metal Foil Substrates. Fort Belvoir, VA: Defense Technical Information Center, March 2011. http://dx.doi.org/10.21236/ada546867.

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Fine, Charles H. Flexible Design and Manufacturing Systems for Automotive Components and Sheet Metal Parts. Fort Belvoir, VA: Defense Technical Information Center, October 1999. http://dx.doi.org/10.21236/ada375391.

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Larson, Steve L., W. A. Martin, Mark S. Dortch, Catherine C. Thomas, Chris S. Griggs, and Catherine C. Nestler. Flexible Reactive Berm (FRBerm) for Removal of Heavy Metals from Runoff Water: ESTCP ER 1213 Treatability Study. Fort Belvoir, VA: Defense Technical Information Center, June 2016. http://dx.doi.org/10.21236/ad1011601.

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Zidan, Ragaiy, and Scott McWhorter. Enabling a Flexible Grid with Increased Penetration of DER: Techno-economic Analysis of Metal Hydride Thermochemical Energy Storage Integrated with Stirling Engine for Grid Energy Storage Applications. Office of Scientific and Technical Information (OSTI), May 2020. http://dx.doi.org/10.2172/1632839.

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Lv, Guangda, Wenqiang Qi, Yongheng Zhou, Minglei Zhong, Kai wang, and Dongqing Zhang. Safety and efficacy of extracorporeal shock wave lithotripsy versus flexible ureteroscopy in the treatment of urinary calculi: a systematic review and meta-analysis. INPLASY - International Platform of Registered Systematic Review and Meta-analysis Protocols, April 2022. http://dx.doi.org/10.37766/inplasy2022.4.0120.

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Zhang, Chunxi, Fangfang Xie, Runchang Li, Ningxin Cui, and Jiayuan Sun. Robotic-assisted bronchoscopy for the diagnosis of peripheral pulmonary lesions: A systematic review and meta-analysis. INPLASY - International Platform of Registered Systematic Review and Meta-analysis Protocols, September 2022. http://dx.doi.org/10.37766/inplasy2022.9.0115.

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Review question / Objective: What is the overall diagnostic yield and complication rate of robotic-assisted bronchoscopy for peripheral pulmonary lesions? Condition being studied: Many of peripheral pulmonary lesions (PPLs) may represent early-stage lung cancer. Lung cancer is the leading cause of cancer mortality globally. Early diagnosis and treatment of lung cancer are crucial for a better prognosis. With the widespread use of low-dose computed tomography (LDCT), the detection rate of PPLs is increasing. As a result, the number of PPLs requiring biopsy is progressively increasing. Transbronchial lung biopsy (TBLB) and transthoracic needle aspiration (TTNA) are the main modalities of non-surgical biopsy for PPLs. TTNA has a diagnostic yield of 90%, however, it also has a pneumothorax rate of 25%. Since TBLB avoids destroying the structure of normal pleura and lung tissue, the incidence of complications is lower. Unfortunately, traditional flexible bronchoscopy has a modest sensitivity of 34% and 63% for lesions 2 cm, respectively. The advent of guided bronchoscopy has increased the diagnostic yield to 70%. However, there is still a gap in diagnostic yield compared with TTNA. The advent of robotic-assisted bronchoscopy (RAB) is expected to further improve the diagnostic yield of TBLB for PPLs. However, the diagnostic performance of RAB for PPLs has not reached a consensus.
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Backstrom, Robert, and David Dini. Firefighter Safety and Photovoltaic Systems Summary. UL Firefighter Safety Research Institute, November 2011. http://dx.doi.org/10.54206/102376/kylj9621.

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Under the United States Department of Homeland Security (DHS) Assistance to Firefighter Grant Fire Prevention and Safety Research Program, Underwriters Laboratories examined fire service concerns of photovoltaic (PV) systems. These concerns include firefighter vulnerability to electrical and casualty hazards when mitigating a fire involving photovoltaic (PV) modules systems. The need for this project is significant acknowledging the increasing use of photovoltaic systems, growing at a rate of 30% annually. As a result of greater utilization, traditional firefighter tactics for suppression, ventilation and overhaul have been complicated, leaving firefighters vulnerable to potentially unrecognized exposure. Though the electrical and fire hazards associated with electrical generation and distribution systems is well known, PV systems present unique safety considerations. A very limited body of knowledge and insufficient data exists to understand the risks to the extent that the fire service has been unable to develop safety solutions and respond in a safe manner. This fire research project developed the empirical data that is needed to quantify the hazards associated with PV installations. This data provides the foundation to modify current or develop new firefighting practices to reduce firefighter death and injury. A functioning PV array was constructed at Underwriters Laboratories in Northbrook, IL to serve as a test fixture. The main test array consisted of 26 PV framed modules rated 230 W each (5980 W total rated power). Multiple experiments were conducted to investigate the efficacy of power isolation techniques and the potential hazard from contact of typical firefighter tools with live electrical PV components. Existing fire test fixtures located at the Delaware County Emergency Services Training Center were modified to construct full scale representations of roof mounted PV systems. PV arrays were mounted above Class A roofs supported by wood trusses. Two series of experiments were conducted. The first series represented a room of content fire, extending into the attic space, breaching the roof and resulting in structural collapse. Three PV technologies were subjected to this fire condition – rack mounted metal framed, glass on polymer modules, building integrated PV shingles, and a flexible laminate attached to a standing metal seam roof. A second series of experiments was conducted on the metal frame technology. These experiments represented two fire scenarios, a room of content fire venting from a window and the ignition of debris accumulation under the array. The results of these experiments provide a technical basis for the fire service to examine their equipment, tactics, standard operating procedures and training content. Several tactical considerations were developed utilizing the data from the experiments to provide specific examples of potential electrical shock hazard from PV installations during and after a fire event.
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Backstrom, Robert, and David Backstrom. Firefighter Safety and Photovoltaic Installations Research Project. UL Firefighter Safety Research Institute, November 2011. http://dx.doi.org/10.54206/102376/viyv4379.

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Under the United States Department of Homeland Security (DHS) Assistance to Firefighter Grant Fire Prevention and Safety Research Program, Underwriters Laboratories examined fire service concerns of photovoltaic (PV) systems. These concerns include firefighter vulnerability to electrical and casualty hazards when mitigating a fire involving photovoltaic (PV) modules systems. The need for this project is significant acknowledging the increasing use of photovoltaic systems, growing at a rate of 30% annually. As a result of greater utilization, traditional firefighter tactics for suppression, ventilation and overhaul have been complicated, leaving firefighters vulnerable to potentially unrecognized exposure. Though the electrical and fire hazards associated with electrical generation and distribution systems is well known, PV systems present unique safety considerations. A very limited body of knowledge and insufficient data exists to understand the risks to the extent that the fire service has been unable to develop safety solutions and respond in a safe manner. This fire research project developed the empirical data that is needed to quantify the hazards associated with PV installations. This data provides the foundation to modify current or develop new firefighting practices to reduce firefighter death and injury. A functioning PV array was constructed at Underwriters Laboratories in Northbrook, IL to serve as a test fixture. The main test array consisted of 26 PV framed modules rated 230 W each (5980 W total rated power). Multiple experiments were conducted to investigate the efficacy of power isolation techniques and the potential hazard from contact of typical firefighter tools with live electrical PV components. Existing fire test fixtures located at the Delaware County Emergency Services Training Center were modified to construct full scale representations of roof mounted PV systems. PV arrays were mounted above Class A roofs supported by wood trusses. Two series of experiments were conducted. The first series represented a room of content fire, extending into the attic space, breaching the roof and resulting in structural collapse. Three PV technologies were subjected to this fire condition – rack mounted metal framed, glass on polymer modules, building integrated PV shingles, and a flexible laminate attached to a standing metal seam roof. A second series of experiments was conducted on the metal frame technology. These experiments represented two fire scenarios, a room of content fire venting from a window and the ignition of debris accumulation under the array. The results of these experiments provide a technical basis for the fire service to examine their equipment, tactics, standard operating procedures and training content. Several tactical considerations were developed utilizing the data from the experiments to provide specific examples of potential electrical shock hazard from PV installations during and after a fire event.
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Yuan, Yuecai, Rui Zhong, Liang Zhong, Haibiao Lai, Zhifeng Huang, Ye Zeng, and Song Wu. The effectiveness and safety of Sun’s tip-flexible ureterorenoscope for the management of kidney stones: A protocol for systematic review and meta-analysis of randomized controlled trials. INPLASY - International Platform of Registered Systematic Review and Meta-analysis Protocols, November 2020. http://dx.doi.org/10.37766/inplasy2020.11.0099.

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