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Articoli di riviste sul tema "Composite materials Al/D"

1

Harris, Bryan. "Fatigue of composite materials". Composites Science and Technology 49, n. 1 (gennaio 1993): 105. http://dx.doi.org/10.1016/0266-3538(93)90026-d.

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Suryawan, I. Gede Putu Agus, NPG Suardana, IN Suprapta Winaya e IWB Suyasa. "The Hardness Analysis of Epoxy Composite Reinforced with Glass Fiber Compared to Nettle Fibers". International Journal of Engineering and Emerging Technology 5, n. 1 (27 luglio 2020): 1. http://dx.doi.org/10.24843/ijeet.2020.v05.i01.p02.

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The purpose of this study is to compare the hardness of glass fiber reinforced composite materials with the hardness of netted fiber-reinforced composite materials. Glass fiber is a commercial fiber that has been used in various industries while nettle fiber is a natural fiber that is more environmentally friendly. Composite material has several advantages, namely the form that can be adjusted, high strength, lightweight and resistant to corrosion. Nettle plants are plants that have strong fibers in the bark. In this study, nettle composites were made with variations in the weight fractions of 10%, 15%, and 20%. Hardness testing used the Shore D Durometer. The results of the hardness value of glass fiber composites with weight fractions of 10%, 15%, and 20% are 82.4 Shore D, 84.5 Shore D, and 86.5 Shore D, show an increase in stable hardness because the glass fiber factor is already commercial, the fiber strength is evenly distributed. The hardness values of nettle fiber composites with fractions of 10%, 15%, and 20% are 81.6 Shore D, 85 Shore D, and 86.6 Shore D, the hardness value of each nettle composite increases with the addition of fiber weight fraction but is unstable due to the strength factor of each nettle single fiber uneven. Furthermore, with the right treatment, nettle fiber can replace glass fiber.
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Li, Ruizi, Yanping Zhou, Wenbin Li, Jixin Zhu e Wei Huang. "Structure Engineering in Biomass-Derived Carbon Materials for Electrochemical Energy Storage". Research 2020 (29 aprile 2020): 1–27. http://dx.doi.org/10.34133/2020/8685436.

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Biomass-derived carbon materials (B-d-CMs) are considered as a group of very promising electrode materials for electrochemical energy storage (EES) by virtue of their naturally diverse and intricate microarchitectures, extensive and low-cost source, environmental friendliness, and feasibility to be produced in a large scale. However, the practical application of raw B-d-CMs in EES is limited by their relatively rare storage sites and low diffusion kinetics. In recent years, various strategies from structural design to material composite manipulation have been explored to overcome these problems. In this review, a controllable design of B-d-CM structures boosting their storage sites and diffusion kinetics for EES devices including SIBs, Li-S batteries, and supercapacitors is systematically summarized from the aspects of effects of pseudographic structure, hierarchical pore structure, surface functional groups, and heteroatom doping of B-d-CMs, as well as the composite structure of B-d-CMs, aiming to provide guidance for further rational design of the B-d-CMs for high-performance EES devices. Besides, the contemporary challenges and perspectives on B-d-CMs and their composites are also proposed for further practical application of B-d-CMs for EES devices.
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Musanif, Imran, Jeditjah Papia, Adrian Maidangkay e Nelson Luppa. "Mechanical Properties of Coconut Fiber Hybrids and Non Hybrids Prepared Using Polyester Resin". International Research Journal of Innovations in Engineering and Technology 08, n. 06 (2024): 11–16. http://dx.doi.org/10.47001/irjiet/2024.806002.

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The use and exploitation of natural fibers as reinforcement in composite materials continues to be developed with the aim of reducing the use of synthetic fibers which have an impact on the environmental problems. This research aims to experimentally study the fiber potential and coconut sticks for the manufacture of hybrid composite materials as one of the natural fiberbased composite materials that have performance for certain applications. The method used is the manufacture of hybrid composites by varying the volume of fiber and sticking with polyester resin matrices. While testing mechanical properties in succession refers to ASTM D 638, ASTM D 790, ASTM D 785 and ASTM D 256 testing standards for tensile strength testing, bending strength, hardness testing, and impact testing. The results obtained show that the most optimal mechanical properties occur in the composition of the 50% reinforcement volume fraction. Overall, the head stick as a reinforcing material on hybrid composites has not provided significant reinforcement due to the presence of a hard layer around the surface of the stick even though alkaline treatment has been carried out.
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Mech, Rafał, e Jerzy Kaleta. "Influence of Terfenol-D Powder Volume Fraction in Epoxy Matirx Composites on their Magnetomechanical Properies". Acta Mechanica et Automatica 11, n. 3 (1 settembre 2017): 233–36. http://dx.doi.org/10.1515/ama-2017-0036.

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Abstract In this paper the investigations of magnetostriction as well as DC magnetic properties for composites doped with Terfenol-D particles are presented. All investigations were performed for the materials with 35%, 46% and 70% volume fraction of the Terfenol-D particles surrounded by epoxy matrix. Moreover, the bulk Terfenol-D alloy was tested. The obtained results show that the magnetization of the composite materials increases with increasing the volume fraction of Terfenol-D particles. Similar dependence as for magnetization was observed for the magnetostriction measurements. Although the magnetostriction of composite material is smaller than for solid Terfenol-D it is still tens of times bigger than in case of traditional magnetostrictive materials. Obtained results gives opportunity to use these materials for variety applications such as actuators and sensors.
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Newacheck, Scott, Anil Singh e George Youssef. "On the magnetoelectric performance of multiferroic particulate composite materials". Smart Materials and Structures 31, n. 1 (29 novembre 2021): 015022. http://dx.doi.org/10.1088/1361-665x/ac383b.

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Abstract In the current work, quantitative analysis of magnetoelectric particulate composite material system explicated the main mechanisms responsible for the below-optimal performance of this class of materials. We considered compliant particulate composite materials, with constituents relevant to technological and scientific interest, leading to 0–3 Terfenol-D/PVDF–TrFE composite samples. To this objective, thick Terfenol-D/PVDF–TrFE films (10–15 µm) were fabricated and analyzed for chemical, mechanical, and magnetic properties to demonstrate their suitability for energy applications in harsh environmental conditions. The vigorous experimental characterization of the composite exemplified the multifunctional properties, quantifying the interrelationship between the composition and performance. We observed that the addition of magnetic particles to the electroactive copolymer matrix resulted in improvement in the mechanical and electrical properties since the particles acted as pinning sites, hindering the deformation of the chains and enhancing polarization. The effective modulus model was amended to account for the crystallization-induced change in material stiffness. We also measured and computed the magnetic particles motion to explicate the detrimental effect of mobility and migration on the overall magnetoelectric coupling performance of the composite. Thereby, we derived an analytical model based on the magnetic force due to the co-presence of alternating and constant magnetic fields, and the viscous drag force due to the viscoelastic properties of the electroactive copolymer matrix. We demonstrated that the mobility of the particles plays a crucial role in the short and long term performance of magnetoelectric coupling in multiferroic particulate composites, uncovering the underpinnings of the dichotomy in performance between experimentally measured and analytically predicted coupling coefficients, thus allowing for the proposal of new approaches to realize the scientific potential of magnetoelectric particulate composites in energy applications.
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Kohyama, Akira. "Advanced SiC/SiC Composite Materials for Fourth Generation Gas Cooled Fast Reactors". Key Engineering Materials 287 (giugno 2005): 16–21. http://dx.doi.org/10.4028/www.scientific.net/kem.287.16.

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As one of the most important breakthrough in the field of SiC/SiC composite materials, the new process called Nano-powder Infiltration and Transient Eutectoid (NITE) Process has been developed. The outstanding total properties of the NITE SiC/SiC composites are presented. Then, the current efforts to make attractive GFR based on the NITE SiC/SiC composites and the technology R & D to make reactor components with the NITE SiC/SiC composites are provided together with our efforts on innovative reactor designs.
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Wan, Zhenkai, e Jialu Li. "ON-LINE TECHNIQUE FOR MEASURING THICKNESS FOR THREE-DIMENSIONAL BRAIDED COMPOSITE MATERIAL PREFORMS". AUTEX Research Journal 5, n. 4 (1 dicembre 2005): 235–45. http://dx.doi.org/10.1515/aut-2005-050407.

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Abstract This paper presents an automatic method that can measure the thickness of three-dimensional (3-D) braided composite preforms. The thickness of 3-D braided composite material preform is an important parameter of 3-D braided composites. With the development of 3-D braided composite technology, an automated measurement technology for thickness of braided composite preform has become an importantgoal. The objective of this paper is to present an automatic measuring system. The system we devised consisted of a computer, a proximity sensor, a pressure sensor, an analog-to-digital converter and pulse motor, etc. The measuring principle and results are discussed in the paper. The system was tested on both carbon and glass fibre preforms. We obtained very encouraging results. Experiments showed the pressure and eddy current resistance value are important parameters for measuring the thickness of 3-D braided composite material preforms. The measuring precision is higher when the pressure value ranges from 0.6kg/cm2 to 0.8kg/cm2 and the eddy current resistance is 2kΩ for preforms made of carbon-fibre than of other substances.
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Yang, Hong, Wei Chen, Yang Xia e Gao Lin Xiang. "Analysis on Magnetoelectric Effect of Terfenol-D/PMNT/Terfenol-D Laminate Magnetoelectric Composite Material". Advanced Materials Research 741 (agosto 2013): 18–23. http://dx.doi.org/10.4028/www.scientific.net/amr.741.18.

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In this paper, based on the constitutive equations of piezoelectric effect and piezomagnetic effect, a 1-3 model of laminate magnetoelectricity composite materials is established. By combining material mechanical kinematic equations and circuit state equations, magnetical-mechanical-electrical equivalent circuit of laminate magnetoelectric composite materials is raised and magneto-electricity switch effect is analyzed. Upon these, a new kind of laminate magnetoelectricity composite material, Terfenol-D/PMNT/Terfenol-D, is put forward. Taking 1-3 model as an example, with the help of MATLAB, we simulate and calculate the magnetoelectric response of this new material. Through calculation, a conclusion is drawn that this new materials magnetoelectricity switch coefficient is higher than that of Terfenol-D/PZT/Terfenol-D. This theoretical basis will put this new material in a good position in magnetoelectric materials preparation.
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Hu, Xiaomei, Lei Zhao e Wenlong Li. "Petri Net-Based R&D Process Modeling and Optimization for Composite Materials". Journal of Applied Mathematics 2013 (2013): 1–12. http://dx.doi.org/10.1155/2013/306704.

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Considering the current R&D process for new composite materials involves some complex details, such as formula design, specimen/sample production, materials/sample test, assessment, materials/sample feedback from customers, and mass production, the workflow model of Petri net-based R&D process for new composite materials’ is proposed. By analyzing the time property of the whole Petri net, the optimized model for new composite materials R&D workflow is further proposed. By analyzing the experiment data and application in some materials R&D enterprise, it is demonstrated that the workflow optimization model shortens the period of R&D on new materials for 15%, definitely improving the R&D efficiency. This indicates the feasibility and availability of the model.
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Tesi sul tema "Composite materials Al/D"

1

Wenger, Wolfgang. "Investigations into 3-D reinforcements for composite materials". Thesis, University of Ulster, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.358671.

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Morgan, Margaret. "Geometric modelling of 3-D woven reinforcements in composite materials". Thesis, University of Ulster, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.423442.

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Meier, Dominik [Verfasser], e Leonhard M. [Akademischer Betreuer] Reindl. "Millimeter-wave tomographic imaging of composite materials". Freiburg : Universität, 2021. http://d-nb.info/1233197053/34.

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4

Avery, William Byron. "A study of the mechanical behavior of a 2-D carbon-carbon composite". Diss., Virginia Polytechnic Institute and State University, 1987. http://hdl.handle.net/10919/76091.

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The objective of this study was to observe and characterize the out-of-plane fracture of a 2-D carbon-carbon composite and to gain an understanding of the factors influencing the stress distribution in such a laminate. The experimental portion of this study consisted of performing an out-of-plane tensile test in a scanning electron microscope and determining the modes of failure. Failure was found to be interlaminar, with cracks propagating along the fiber-matrix interface. Finite element analyses of a two-ply carbon-carbon composite under in-plane, out-of-plane, and thermal loading were performed. Stress distributions were studied as a function of stacking sequence, undulation aspect ratio, and undulation offset ratio. The results indicated that under out-of-plane loading σx and τxz were strongly dependent on the geometric parameters studied, but σz and σy were relatively independent of geometry. Under in-plane loading all components of stress were strong functions of the geometry, and large interlaminar stresses were predicted in regions of undulation. The thermal analysis predicted the presence of large in-plane normal stresses throughout the laminate and large interlaminar stresses in regions of undulation. An elasticity solution was utilized to analyze an orthotropic fiber in an isotropic matrix under uniform thermal load. The analysis reveals that the stress distributions in the fiber are singular when the radial stiffness Crr is greater than the hoop stiffness C₀₀. Conversely, if Crr < C₀₀ the maximum stress in the composite is finite and occurs at the fiber-matrix interface. In both cases the stress distributions are radically different than those predicted assuming the fiber to be transversely isotropic (Crr = C₀₀).
Ph. D.
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Kuttner, Christian [Verfasser]. "Macromolecular Interphases and Interfaces in Composite Materials / Christian Kuttner". München : Verlag Dr. Hut, 2014. http://d-nb.info/1063222036/34.

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Kraiem, Nada. "Impression 3D de matériaux composites à base de diamant pour des applications de gestion thermique". Electronic Thesis or Diss., Bordeaux, 2024. http://www.theses.fr/2024BORD0129.

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Avec la tendance à la miniaturisation croissante des équipements électriques et à l'augmentation constante de la densité de puissance dans les dispositifs à base de semiconducteurs, la gestion efficace de la chaleur est devenue un enjeu majeur pour les chercheurs. En effet, cette évolution technologique impose des contraintes de plus en plus strictes en termes de dissipation thermique, nécessitant des solutions innovantes pour garantir une meilleure durabilité et fiabilité des composants. Dans ce contexte, l'utilisation de matériaux composites offrant une conductivité thermique élevée et un coefficient de dilatation thermique faible par rapport aux métaux purs est devenue essentielle pour résoudre les problèmes de surchauffe des composants électroniques. L'intégration de matériaux avancés tels que le diamant (D), avec ses propriétés exceptionnelles de conductivité thermique et de dureté, constitue une option privilégiée pour renforcer les matrices métalliques. Toutefois, son incorporation dans les matériaux composites nécessite la création d'une interface D-métal bien définie, à la fois pour éviter la formation de porosité et assurer un transfert efficace des propriétés thermiques. La fabrication additive de matériaux 3D par fusion laser émerge comme une solution prometteuse, non seulement pour la facilité de mise en œuvre de ces composites, mais aussi pour la création de structures complexes dédiées à la dissipation de chaleur. Ces structures jouent un rôle crucial dans l'optimisation de la surface d'échange thermique par convection avec l'air environnant, permettant ainsi une dissipation efficace de la chaleur générée par les dispositifs électroniques modernes.Dans cette étude, l`impression 3D du cuivre (Cu) a été réalisée grâce à l`ajout d`une quantité optimale d’aluminium. Cette approche a permis d'améliorer considérablement la densification de matériaux à base de cuivre, malgré les défis posés par sa forte réflectivité. Par la suite, l'investigation approfondie et l'optimisation de l`impression 3D laser de l'alliage AlSi10Mg, avant et après l'incorporation de D, ont été réalisées. Enfin, une étape cruciale de post-traitement a été optimisée consistant à polir des matériaux composites Al/D par ablation laser.Ce travail a été réalisé dans le cadre d'une collaboration internationale entre l'Université du Nebraska, Lincoln aux États-Unis d'Amérique, et l'Université de Bordeaux en France
With the trend towards miniaturization of electrical equipment and the constant increase in power density in semiconductor devices, efficient heat management has become a major concern for researchers. Indeed, this technological evolution imposes increasingly strict constraints in terms of thermal dissipation, necessitating innovative solutions to ensure better durability and reliability of components. In this context, the use of composite materials offering high thermal conductivity and low coefficient of thermal expansion compared to pure metals has become essential to address overheating issues in electronic components. The utilization of advanced materials such as diamond (D), with exceptional thermal conductivity and hardness properties, stands out as a preferred choice for reinforcing metal matrices. However, its incorporation into composite materials requires the creation of a well-defined D-metal interface, both to avoid porosity formation and to ensure efficient transfer of thermal properties. Additive manufacturing of 3D materials by laser fusion is emerging as a promising solution, not only for the ease of implementation of these composites, but also for the creation of complex structures dedicated to heat dissipation. These structures play a crucial role in optimizing the heat exchange surface by convection with the surrounding air, thus allowing efficient dissipation of heat generated by modern electronic devices.In this study, 3D printing of copper (Cu) was achieved through the addition of an optimal amount of aluminum. This approach significantly improved the densification of copper-based materials, despite the challenges posed by its high reflectivity. Subsequently, in-depth investigation and optimization of laser 3D printing of the AlSi10Mg alloy, before and after the incorporation of D, were carried out. Finally, a crucial post-processing step was optimized, consisting of polishing Al/D composite materials using laser ablation.This work was carried out as part of an international collaboration between the University of Nebraska, Lincoln in the United States of America, and the University of Bordeaux in France
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Jordan, Thomas [Verfasser], e Markus [Akademischer Betreuer] Antonietti. "CxNy-materials from supramolecular precursors for “All-Carbon” composite materials / Thomas Jordan ; Betreuer: Markus Antonietti". Potsdam : Universität Potsdam, 2017. http://d-nb.info/1219077615/34.

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André, Rute da Conceição Tavares [Verfasser]. "Bioinspired composite materials and biomimetic catalysis / Rute da Conceição Tavares André". Mainz : Universitätsbibliothek Mainz, 2014. http://d-nb.info/1052002560/34.

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Tritschler, Ulrich [Verfasser]. "Hierarchically Structured Composite Materials by Gluing of Anisotropic Nanoparticles / Ulrich Tritschler". Konstanz : Bibliothek der Universität Konstanz, 2015. http://d-nb.info/1113109793/34.

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Ji, Yuanchun [Verfasser]. "Polyoxometalate-based nanocarbon composite materials as lithium ion battery electrodes / Yuanchun Ji". Ulm : Universität Ulm, 2019. http://d-nb.info/1178527913/34.

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Libri sul tema "Composite materials Al/D"

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Wenger, Wolfgang. Investigations into 3-D reinforcements for composite materials. [s.l: The Author], 1993.

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2

Center, Langley Research, a cura di. Fatigue resistance of unnotched and post-impact (+ ø30ʻ́/0ʻ́) 3-D braided composites. Hampton, Va: National Aeronautics and Space Administration, Langley Research Center, 1994.

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Center, Langley Research, a cura di. Fatigue resistance of unnotched and post-impact (+̲30/0) 3-D braided composites. Hampton, Va: National Aeronautics and Space Administration, Langley Research Center, 1994.

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4

Thomas, Hahn H., ASTM Committee D-30 on High Modulus Fibers and Their Composites., ASTM Committee E-24 on Fracture Testing. e Symposium on Composite Materials: Fatigue and Fracture., a cura di. Composite materials: Fatigue and fracture : a symposium sponsored by ASTM Committee D-30 on High Modulus Fibers and Their Composites, Dallas, TX, 24-25 Oct. 1984. Philadelphia, PA: ASTM, 1986.

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Poe, Clarence C. Mechanics of textile composites conference: Proceedings of a conference sponsored by the National Aeronautics and Space Administration, Washington, D. C., and held in Hampton, Virginia, December 6-8, 1994. Hampton, Va: Langley Research Center, 1995.

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International Meeting on Modern Ceramics Technologies (12th 2010 Montecatini Terme, Italy). Ceramics and composites in extreme environments & for chemical and electrochemical applications: 12th international ceramics congress, part D. Stafa-Zuerich: Trans Tech Pubs. ltd. on behalf of Techna Group, 2011.

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L, Kessler Sandra, e ASTM Committee D-20 on Plastics., a cura di. Instrumented impact testing of plastics and composite materials: A symposium sponsored by ASTM Committee D-20 on Plastics, Houston, TX, 11-12 March 1985. Philadelphia, PA: ASTM, 1987.

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Nielsen, Lauge Fuglsang. Composite Materials. Berlin, Heidelberg: Springer Berlin Heidelberg, 2005. http://dx.doi.org/10.1007/978-3-540-27680-7.

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Chawla, Krishan K. Composite Materials. New York, NY: Springer New York, 1998. http://dx.doi.org/10.1007/978-1-4757-2966-5.

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Berthelot, Jean-Marie. Composite Materials. New York, NY: Springer New York, 1999. http://dx.doi.org/10.1007/978-1-4612-0527-2.

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Capitoli di libri sul tema "Composite materials Al/D"

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Gay, Daniel. "Quasi-Orthotropic Homogenized Laminates or D-D Laminates". In Composite Materials, 309–54. 4a ed. Boca Raton: CRC Press, 2022. http://dx.doi.org/10.1201/9781003195788-18.

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Jain, Tanvi, Hridyesh Kumar e Pradip Kumar Dutta. "D-Glucosamine and N-Acetyl D-Glucosamine: Their Potential Use as Regenerative Medicine". In Springer Series on Polymer and Composite Materials, 279–95. New Delhi: Springer India, 2015. http://dx.doi.org/10.1007/978-81-322-2511-9_11.

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Rajanna, T. R., Amar Singh e K. Joseph Shibu. "Qualification of 3-D Printed AlSi10Mg Part for Military Airborne Applications". In Composite Materials for Extreme Loading, 171–86. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-16-4138-1_13.

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Kwon, Oh Yeoul, Kyung Hoon Kim, Min Kyu Yu e Soon Hyung Hong. "Fabrication Process and Magnetostriction of Infiltrated Terfenol-D/Epoxy Composite". In Advances in Composite Materials and Structures, 1121–24. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-427-8.1121.

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Xiao, Yu Mei, Hui Chuan Zhao, Hong Song Fan, Xin Lin Wang, L. K. Guo, Xu Dong Li e Xing Dong Zhang. "A Novel Way to Prepare Nano-Hydroxyapatite/Poly(D,L-Lactide) Composite". In Materials Science Forum, 2383–86. Stafa: Trans Tech Publications Ltd., 2005. http://dx.doi.org/10.4028/0-87849-960-1.2383.

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Liang, Zheng Zhao, Chun An Tang, De Shen Zhao, Yong Bin Zhang, Tao Xu e Hou Quan Zhang. "3-D Micromechanics Model for Progressive Failure Analysis of Laminated Cylindrical Composite Shell". In Key Engineering Materials, 1113–19. Stafa: Trans Tech Publications Ltd., 2005. http://dx.doi.org/10.4028/0-87849-978-4.1113.

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Lian, Jun, Bo Hong Gu e Wei Dong Gao. "Microstructure Model for Finite Element Analysis of 4-Step 3-D Rectangular Braided Composites under Ballistic Impact". In Advances in Composite Materials and Structures, 485–88. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-427-8.485.

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Böttger, W. "3-D Reinforcing Fabrics for Monolithie and Sandwich-Composites". In Developments in the Science and Technology of Composite Materials, 847–50. Dordrecht: Springer Netherlands, 1990. http://dx.doi.org/10.1007/978-94-009-0787-4_119.

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Moon, Chang Kwon, e Ki Woo Nam. "Study on 2-D Multi-Fiber Arrange Model Composites". In Key Engineering Materials, 219–24. Stafa: Trans Tech Publications Ltd., 2005. http://dx.doi.org/10.4028/0-87849-978-4.219.

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Dokládal, Petr, e Dominique Jeulin. "3-D Extraction of Fibres from Microtomographic Images of Fibre-Reinforced Composite Materials". In Lecture Notes in Computer Science, 126–36. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-642-03613-2_12.

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Atti di convegni sul tema "Composite materials Al/D"

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Goldie, James H., Michael J. Gerver, John Oleksy, Gregory P. Carman e Terrisa A. Duenas. "Composite Terfenol-D sonar transducers". In 1999 Symposium on Smart Structures and Materials, a cura di Manfred R. Wuttig. SPIE, 1999. http://dx.doi.org/10.1117/12.352797.

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Armstrong, William D. "A General Magneto-Elastic Model of Terfenol-D Particle Actuated Composite Materials". In ASME 2000 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2000. http://dx.doi.org/10.1115/imece2000-1698.

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Abstract A new theory is presented of the nonlinear multi-axial magneto-elastic behavior of magnetostrictive particle actuated composite materials. The analysis assumes a uniform external magnetic field is operating on a large number of well distributed, crystallographically and shape parallel ellipsoidal magnetostrictive particles encased in an elastic, nonmagnetic composite matrix. Comparisons between experimental and model magnetostriction results show that the model is able to provide a quantitatively correct dependence on particulate volume fraction and longitudinal stress and quantitatively accurate magnetostriction curves for both homogenous Terfenol-D rod and magnetically ordered Terfenol-D particulate actuated epoxy matrix composites over experimentally applied field ranges.
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3

Watanabe, Naoyuki, e Yasuyo Tanzawa. "Delamination analysis of 3-D orthogonal interlocked fabric composite". In 37th Structure, Structural Dynamics and Materials Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1996. http://dx.doi.org/10.2514/6.1996-1418.

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4

McKnight, Geoffrey P., e Gregory P. Carman. "Large Magnetostriction in Oriented Particle Terfenol-D Composites". In ASME 2001 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2001. http://dx.doi.org/10.1115/imece2001/ad-23737.

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Abstract Magnetostrictive composite materials have been extensively investigated to overcome limitations of the monolithic form such as frequency response and durability, but have previously shown decreased saturation strain as compared to the monolithic materials. This paper attempts to overcome this limitation by manufacturing composites with particle orientation along a specific crystal axis. Shape anisotropy was used during manufacture to orient needle shaped particles along their longest dimension, near the [112] direction. Measurements reveal that the saturation magnetostriction has been increased from ∼1200 ppm for a non-oriented composite (at 12 MPa compressive stress) to over 1550 ppm for a [112] oriented composite (under 12 MPa compressive stress). This is the largest magnetostriction reported as yet for a composite material. A key conclusion of this study is that the dominant influence on the orientation of Terfenol-D particles aligned during manufacture is the shape anisotropy and not the magnetocrystalline anisotropy. Furthermore, the necessary applied fields to reach similar magnetostriction have been reduced in the oriented particle composite as compared to the non-oriented particle composite. In addition, a rule of mixtures model has been used to determine that the composite exhibits nearly the maximum rule of mixtures prediction for magnetostriction.
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5

Zhu, Bin. "Advanced Ceramic Fuel Cell R&D". In ASME 2004 2nd International Conference on Fuel Cell Science, Engineering and Technology. ASMEDC, 2004. http://dx.doi.org/10.1115/fuelcell2004-2499.

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Since many years in Swedish national research project and Swedish-Chinese research framework we have carried out advanced ceramic fuel cell research and development, targeting for intermediate and low temperature ceramic or solid oxide fuel cells (ILTCFCs or ILTSOFCs, 300–700°C) based on ceramic-based composite materials. The ceramic composite material developments in Sweden have been experienced from the oxyacid-salts oxide proton-based conductors, non-oxide containment salts, the ceria-based composite electrolytes and nano-composites. Among them the ceria-based composites showed excellent ionic conductivity of 0.01 to 1 Scm−1 and ILTCFCs using these composites as electrolytes have achieved high performances of 200 to 1000 mWcm−2 at temperatures between 400 and 700°C. The excellent ion conduction was resulted from hybrid proton and oxygen ion conduction. The hybrid ion conduction and dual electrode reactions and processes create a new fuel cell system. Advanced ceramic fuel cell aims at developing a new generation to realize the challenges for fuel cell commercialization. This paper reviews our more than 14 years R&D on the field with emphasis on the recent progresses and achievements.
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Baucom, Jared N., e Mohammed A. Zikry. "Impact-Induced Damage Progression in 2-D and 3-D Woven Composite Systems". In ASME 2001 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2001. http://dx.doi.org/10.1115/imece2001/ad-25307.

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Abstract The role of fabric architecture on the impact-induced damage progression and perforation resistance of glass-fiber reinforced vinyl-ester resin panels under dynamic loading condition is investigated. Three fabric preforms are considered: a 2-dimensional, plain-woven laminate, a commercially available biaxially reinforced warp-knit, and a 3-dimensional, orthogonally woven preform. Composite samples are subjected to multiple impacts, until perforation, and the impactor position and acceleration are monitored throughout each event, resulting in a visualization of dynamic energy dissipation. Failure modes of the various material systems are characterized. The radial damage expansion was smallest for the 2-d laminate, larger for the biaxially-reinforced warp-knit, and largest for the 3-d orthogonal woven composite. The 3-d composite survived more hits and dissipated more total energy than the other systems. The difference may be due to the additional energy absorption mechanisms, which involve the crimped portion of z-tows in the 3-d composites. This implies that failure may be controlled by manipulation of the properties of the z-tows. It also indicates that the surface condition of 3-d orthogonally woven composites can strongly affect the progression of impact-induced damage.
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7

Mortensen, Anthony P., e Marcelo J. Dapino. "Hybrid polymer matrix Terfenol-D composite/PMN-PT transducer in mechanical series configuration". In Smart Structures and Materials, a cura di William D. Armstrong. SPIE, 2005. http://dx.doi.org/10.1117/12.600110.

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8

Cozart, Aaron, e Kunigal Shivakumar. "Stress analyses of a 3-D braided composite ablative nozzle". In 40th Structures, Structural Dynamics, and Materials Conference and Exhibit. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1999. http://dx.doi.org/10.2514/6.1999-1277.

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9

Or, Siu W., Nersesse Nersessian e Gregory P. Carman. "Dynamic magnetomechanical behavior of Terfenol-D/epoxy 1-3 composite". In SPIE's 9th Annual International Symposium on Smart Structures and Materials, a cura di Christopher S. Lynch. SPIE, 2002. http://dx.doi.org/10.1117/12.475001.

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10

Valdez, Alberto Hernandez, Isaias Ramirez Vazquez, Ramiro Hernandez Corona, Julio Vergara Vazquez, David Ponce Noyola, Alberto Brito Luisillo, Carlos Hurtado Hurtado e Antonio Paniagua Silva. "Connection method design for redundant elements of composite materials for transmission towers". In 2016 IEEE PES Transmission & Distribution Conference and Exposition-Latin America (PES T&D-LA). IEEE, 2016. http://dx.doi.org/10.1109/tdc-la.2016.7805627.

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Rapporti di organizzazioni sul tema "Composite materials Al/D"

1

Lee, Max. Composite Materials. Fort Belvoir, VA: Defense Technical Information Center, settembre 1996. http://dx.doi.org/10.21236/ada316048.

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Wadley, H. N. G., J. A. Simmons, R. B. Clough, F. Biancaniello, E. Drescher-Krasicka, M. Rosen, T. Hsieh e K. Hirschman. Composite materials interface characterization. Gaithersburg, MD: National Bureau of Standards, 1988. http://dx.doi.org/10.6028/nbs.ir.87-3630.

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3

Spangler, Lee. Composite Materials for Optical Limiting. Fort Belvoir, VA: Defense Technical Information Center, aprile 2001. http://dx.doi.org/10.21236/ada396124.

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4

Magness, F. H. Joining of polymer composite materials. Office of Scientific and Technical Information (OSTI), novembre 1990. http://dx.doi.org/10.2172/6334940.

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Anderson, D. P., e B. P. Rice. Intrinsically Survivable Structural Composite Materials. Fort Belvoir, VA: Defense Technical Information Center, aprile 2000. http://dx.doi.org/10.21236/ada387309.

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Anderson, David P., Chenggang Chen, Larry Cloos e Thao Gibson. Intrinsically Survivable Structural Composite Materials. Fort Belvoir, VA: Defense Technical Information Center, febbraio 2001. http://dx.doi.org/10.21236/ada388001.

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7

Papanicolaou, G. C. Effective Behavior of Composite Materials. Fort Belvoir, VA: Defense Technical Information Center, aprile 1985. http://dx.doi.org/10.21236/ada158941.

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8

Wang, S. S., S. S. Wang e Dale W. Fitting. Composite materials for offshore operations. Gaithersburg, MD: National Institute of Standards and Technology, 1995. http://dx.doi.org/10.6028/nist.sp.887.

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9

Unroe, Marilyn R. Adaptive, Active and Multifunctional Composite and Hybrid Materials Program: Composite and Hybrid Materials ERA. Fort Belvoir, VA: Defense Technical Information Center, aprile 2014. http://dx.doi.org/10.21236/ada600876.

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10

Lane, J. E., C. J. Painter e K. C. LeCostaouec, J. F. Radford. 3-D woven, mullite matrix, composite filter. Office of Scientific and Technical Information (OSTI), dicembre 1995. http://dx.doi.org/10.2172/149996.

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