Academic literature on the topic 'Multi-layered structures'

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Journal articles on the topic "Multi-layered structures"

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Dayan, I., J. F. Gouyet, and S. Havlin. "Percolation in multi-layered structures." Journal of Physics A: Mathematical and General 24, no. 6 (March 21, 1991): L287—L293. http://dx.doi.org/10.1088/0305-4470/24/6/007.

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Parteli, Eric J. R., Luciano R. da Silva, and José S. Andrade Jr. "Self-organized percolation in multi-layered structures." Journal of Statistical Mechanics: Theory and Experiment 2010, no. 03 (March 26, 2010): P03026. http://dx.doi.org/10.1088/1742-5468/2010/03/p03026.

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Saraswat, Harshvardhan, Amit Rawal, and Rajendra Singh. "Tensile behaviour of multi-layered braided structures." Journal of Materials Science 49, no. 18 (June 19, 2014): 6427–36. http://dx.doi.org/10.1007/s10853-014-8372-3.

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HSUEH, W. J. "FORCED RESPONSE ANALYSIS FOR MULTI-LAYERED STRUCTURES." Journal of Sound and Vibration 227, no. 1 (October 1999): 222–29. http://dx.doi.org/10.1006/jsvi.1999.2362.

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Cory, H., and C. Zach. "Wave propagation in metamaterial multi-layered structures." Microwave and Optical Technology Letters 40, no. 6 (2004): 460–65. http://dx.doi.org/10.1002/mop.20005.

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Zeipl, R., M. Jelínek, J. Walachová, T. Kocourek, and M. Vlček. "Thermoelectric Properties of Ce0.09Fe0.67Co3.33Sb12/FeSb2Te Multi-Layered Structures." Journal of Computer and Communications 01, no. 07 (2013): 1–4. http://dx.doi.org/10.4236/jcc.2013.17001.

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Pechprasarn, Suejit, and Naphat Albutt. "Multiple Reflections Modeling for Multi-Layered Optical Structures." Applied Mechanics and Materials 891 (May 2019): 299–303. http://dx.doi.org/10.4028/www.scientific.net/amm.891.299.

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Fresnel equations and transfer matrix approach are usually employed to solve for exact solution to Maxwell’s equations for multi-layered optical structures. In this paper, we demonstrate that the Fresnel equations and transfer matrix approach can be expanded using Geometric series. This geometric series give an insight to how the light is trapped and behaves in multi-layered optical structures. It also allows us to calculate multiple reflections and count the number of round-trip inside the structure. One main issue in optical calculation is that layers are usually treated as an infinitely large layer. This is, of course, not practical in term of device fabrication. We also demonstrate how this simple geometric calculation will enable us to calculate a smallest practical size that can accommodate a required optical resonant effect.
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Ruderman, M. S., B. Roberts, E. N. Pelinovsky, and N. S. Petrukhin. "Slow solitary waves in multi-layered magnetic structures." Physics of Plasmas 8, no. 6 (June 2001): 2682–90. http://dx.doi.org/10.1063/1.1371520.

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Khapaev, M. M., M. Yu Kupriyanov, E. Goldobin, and M. Siegel. "Current distribution simulation for superconducting multi-layered structures." Superconductor Science and Technology 16, no. 1 (November 25, 2002): 24–27. http://dx.doi.org/10.1088/0953-2048/16/1/305.

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Mahanthesh, K. M., and B. O. Naveen. "Dynamic Analysis of Multi-Layered Grid Space Structures." IOP Conference Series: Materials Science and Engineering 1006 (December 25, 2020): 012024. http://dx.doi.org/10.1088/1757-899x/1006/1/012024.

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Dissertations / Theses on the topic "Multi-layered structures"

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Ortigoza-Guerrero, Lauro. "Resource allocation strategies for multi-layered cellular structures." Thesis, King's College London (University of London), 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.324885.

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Yildirim, Egemen. "Development Of Multi-layered Circuit Analog Radar Absorbing Structures." Master's thesis, METU, 2012. http://etd.lib.metu.edu.tr/upload/12614314/index.pdf.

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A fast and efficient method for the design of multi-layered circuit analog absorbing structures is developed. The method is based on optimization of specular reflection coefficient of a multi-layered absorbing structure comprising of lossy FSS layers by using Genetic Algorithm and circuit equivalent models of FSS layers. With the introduced method, two illustrative absorbing structures are designed with -15 dB reflectivity for normal incidence case in the frequency bands of 10-31 GHz and 5-46 GHz, respectively. To the author&rsquo
s knowledge, designed absorbers are superior in terms of frequency bandwidth to similar studies conducted so far in the literature. For broadband scattering characterization of periodic structures, numerical codes are developed. The introduced method is improved with the employment of developed FDTD codes to the proposed method. By taking the limitations regarding production facilities into consideration, a five-layered circuit analog absorber is designed and manufactured. It is shown that the manufactured structure is capable of 15 dB reflectivity minimization in a frequency band of 3.2-12 GHz for normal incidence case with an overall thickness of 14.2 mm.
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LI, GUOHONG. "Variable Kinematic Finite Element Formulations Applied to Multi-layered Structures and Multi-field Problems." Doctoral thesis, Politecnico di Torino, 2019. http://hdl.handle.net/11583/2729361.

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Schneider, Tyler. "MULTI-LAYERED TUBING AND PIPING: TECHNOLOGY DEVELOPMENT AND TRANSFER LEADING TO NEW DIMENSIONS IN ANNULAR LAYERED STRUCTURES." Case Western Reserve University School of Graduate Studies / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=case1567782483369336.

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Koston, E. "Fatigue crack monitoring in multi-layered aircraft structures using guided ultrasonic waves." Thesis, University College London (University of London), 2010. http://discovery.ucl.ac.uk/516138/.

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The detection of fatigue cracks at fasteners in the sub layers of multi-layered aircraft structures can be problematic using conventional nondestructive testing methods. In this thesis the sensitivity of low frequency guided ultrasonic waves to detect these defects is studied. Guided ultrasonic waves typically have energy distributed through the thickness of such structures and allow for defect detection in all sub-layers, but have wavelengths larger than commonly used in bulk wave ultrasonic testing. The model aerospace multi-layered structure investigated consists of two aluminium plate strips adhesively bonded using a paste adhesive with a fastener hole. Guided waves were excited by placing piezoelectric (PZT) transducers on the surface of the structure. Experimentally the wave propagation and scattering was measured using a laser interferometer. The wave propagation was studied numerically using Semi-Analytical Finite-Element (SAFE) calculations and 3D Finite Element (FE) simulations. Thickness and width mode shapes of the guided waves were identified from the SAFE simulations. By placing PZT discs across the width of the structure the excited exural wave modes could be controlled to an extent. The thickness mode shapes of these waves are similar to those in a large multi-layered plate structure. 3D FE simulations predict a similar amplitude change due to a defect in these structures. Fatigue crack growth monitoring on tensile specimens was realized, measuring the amplitude at a single point. The measured changes in the amplitude of the ultrasonic signal due to a defect agree well with 3D FE simulations. These investigations found that using low frequency guided ultrasonic waves defects through the thickness of a hidden sub layer can be detected from measurements on the undamaged, accessible layer.
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Ahmad, Muhammad Saeed. "Study of dynamic behaviour of multi-layered structures subjected to blast loading." Doctoral thesis, University of Cape Town, 2012. http://hdl.handle.net/11427/10005.

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The objective of this research work is to assess the response of multi-layered plates in comparison to single plates to gain physical understanding of different phenomena taking place at micro level during localized blast loading. Since layered plates have been shown to give improved ballistic performance under certain circumstances, it is useful to ascertain and understand the influence of layering on blast performance. This investigation is carried out both experimentally and numerically. A finite element model was developed to design the blast experiments for two different steels of various thicknesses.
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Oun, Hatem Ahmed. "Pressure-drop studies in porous multi-layered inconel structures : potential for aero-engine sealing application." Thesis, University of Nottingham, 2016. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.716833.

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Open-cell porous metals and alloys, based on polymer foam replication techniques, have been performing significantly well and, in many cases, replacing traditional porous metals, including metal foams, in various applications because of their unique properties and structural features including high porosity, semi-uniform structure, light weight and high surface to volume ratio. In applications requiring flow of fluids (gas, liquid or both) through open-cell porous structures, for instance in multi-stage filters, heat exchangers, water purification and the storage and transfer of liquid, pressure-drop and flow characteristics of the fluid are essential parameters in application design and performance. Despite the fact that pressure-drop is often sought to be minimised, high pressure-drop is sometimes required such as when used as abradable seals in jet engines. In this work, the structure of Inconel 625, open-cell porous metals (with nominal cell sizes 450, 580, 800 and 1200 pm) were studied in detail using a series of imaging and morphological techniques. The effect of airflow velocity, in the range of 0-70 m s'1, on the pressure-drop characteristics for bulk and structurally tailored, diffusion bonded, multi­layered, open-cell porous structures, as a function of thickness (affected by sectioning), density (affected by compression) and structural alterations (affected by multi-pore sized insets, porous metal stacking and air gaps), were thoroughly investigated. As the air flow velocity increases, fluid properties tend to change and drag force increases in comparison with the viscous effect causing the pressure drop data to deviate from the non­linear, quadratic Forchheimer model into a cubic equation at a velocity value higher than 20 m s'1. The need for accurate pinpointing of the different regimes (Darcy, Forchheimer and Turbulent), which enables precise determination of the permeability (K) and form drag coefficient (C), was highlighted. Understanding the pressure-drop behaviour for multi­layered, open cell porous structures will offer the possibility for combining layers with different porosities and pore sizes giving the ability to tailor the structure to achieve bespoke flow conditions for demanding applications. For example, the use of a 9 mm thick porous structure in three different configurations (bulk, stacked and gapped) causes the pressure-drop to change drastically, while having the same weight (3.38g), thus, the potential for mass-efficient porous structures is readily achievable.
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Köberle, Patrick [Verfasser]. "Ground-state structures and dynamics of dipolar Bose-Einstein condensates in single and multi-layered traps / Patrick Köberle." München : Verlag Dr. Hut, 2011. http://d-nb.info/1016531664/34.

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Li, Tianyu. "On the Formulation of a Hybrid Discontinuous Galerkin Finite Element Method (DG-FEM) for Multi-layered Shell Structures." Thesis, Virginia Tech, 2016. http://hdl.handle.net/10919/82962.

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A high-order hybrid discontinuous Galerkin finite element method (DG-FEM) is developed for multi-layered curved panels having large deformation and finite strain. The kinematics of the multi-layered shells is presented at first. The Jacobian matrix and its determinant are also calculated. The weak form of the DG-FEM is next presented. In this case, the discontinuous basis functions can be employed for the displacement basis functions. The implementation details of the nonlinear FEM are next presented. Then, the Consistent Orthogonal Basis Function Space is developed. Given the boundary conditions and structure configurations, there will be a unique basis function space, such that the mass matrix is an accurate diagonal matrix. Moreover, the Consistent Orthogonal Basis Functions are very similar to mode shape functions. Based on the DG-FEM, three dedicated finite elements are developed for the multi-layered pipes, curved stiffeners and multi-layered stiffened hydrofoils. The kinematics of these three structures are presented. The smooth configuration is also obtained, which is very important for the buckling analysis with large deformation and finite strain. Finally, five problems are solved, including sandwich plates, 2-D multi-layered pipes, 3-D multi-layered pipes, stiffened plates and stiffened multi-layered hydrofoils. Material and geometric nonlinearities are both considered. The results are verified by other papers' results or ANSYS.
Master of Science
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Su, Rong. "Improved inspection and micrometrology of embedded structures in multi-layered ceramics : Development of optical coherence tomographic methods and tools." Doctoral thesis, KTH, Mätteknik och optik, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-144595.

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Roll-to-roll manufacturing of micro components based on advanced printing, structuring and lamination of ceramic tapes is rapidly progressing. This large-scale and cost-effective manufacturing process of ceramic micro devices is however prone to hide defects within the visually opaque tape stacks. To achieve a sustainable manufacturing with zero defects in the future, there is an urgent need for reliable inspection systems. The systems to be developed have to perform high-resolution in-process quality control at high speed. Optical coherence tomography (OCT) is a promising technology for detailed in-depth inspection and metrology. Combined with infrared screening of larger areas it can solve the inspection demands in the roll-to-roll ceramic tape processes. In this thesis state-of-art commercial and laboratory OCT systems, operating at the central wavelength of 1.3 µm and 1.7 µm respectively, are evaluated for detecting microchannels, metal prints, defects and delaminations embedded in alumina and zirconia ceramic layers at hundreds of micrometers beneath surfaces. The effect of surface roughness induced scattering and scattering by pores on the probing radiation, is analyzed by experimentally captured and theoretically simulated OCT images of the ceramic samples, while varying surface roughnesses and operating wavelengths. By extending the Monte Carlo simulations of the OCT response to the mid-infrared the optimal operating wavelength is found to be 4 µm for alumina and 2 µm for zirconia. At these wavelengths we predict a sufficient probing depth of about 1 mm and we demonstrate and discuss the effect of rough surfaces on the detectability of embedded boundaries. For high-precision measurement a new and automated 3D image processing algorithm for analysis of volumetric OCT data is developed. We show its capability by measuring the geometric dimensions of embedded structures in ceramic layers, extracting features with irregular shapes and detecting geometric deformations. The method demonstrates its suitability for industrial applications by rapid inspection of manufactured samples with high accuracy and robustness. The new inspection methods we demonstrate are finally analyzed in the context of measurement uncertainty, both in the axial and lateral cases, and reveal that scattering in the sample indeed affects the lateral measurement uncertainty. Two types of image artefacts are found to be present in OCT images due to multiple reflections between neighboring boundaries and inhomogeneity of refractive index. A wavefront aberration is found in the OCT system with a scanning scheme of two galvo mirrors, and it can be corrected using our image processing algorithm.

QC 20140428


Multilayer (FP7-NMP4-2007-214122)
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Books on the topic "Multi-layered structures"

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Tzanetakis, Meropi, and Heino Stöver, eds. Drogen, Darknet und Organisierte Kriminalität. Nomos Verlagsgesellschaft mbH & Co. KG, 2019. http://dx.doi.org/10.5771/9783845282831.

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The chapters in this edited volume include a vibrant mix of scholars from political science, sociology, criminology, law, and practical experiences. This volume is the first of its kind in German-speaking countries addressing the complex issue of ‘drugs, darknet and organized crime’. The multidisciplinary approaches to the new phenomenon demonstrate that cryptomarkets poses a multi-layered challenge. Classical concepts like ‘organized crime’ need to be expanded and call for new explanatory approaches. Organisational structures of anonymous online drug markets must be reassessed. Likewise, the development of cryptomarkets has implications for drug policy regarding drug prevention, drug counselling, criminal investigation and the judiciary. Finally, the question arises how to best regulate both offline and online drug markets. In view of those challenges, the various contributions in this reader deal with actors, underlying structures and economic transactions on drug markets in the Internet. With contributions by Meropi Tzanetakis | Heino Stöver | Klaus von Lampe | Frank Neubacher | Anja P. Jakobi | Jasmin Haunschild | Gergana Bulanova-Hristova | Karsten Kasper | Andreas Zaunseder | Angus Bancroft | Gerrit Kamphausen | Bernd Werse | James Martin | Benjamin Löhner | Sandro Rösler | Christian Mader | Stefan Mey
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Jakab, András, and Dimitry Kochenov, eds. The Enforcement of EU Law and Values. Oxford University Press, 2017. http://dx.doi.org/10.1093/acprof:oso/9780198746560.001.0001.

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It is clear that the current crisis of the EU is not confined to the Eurozone and the EMU, evidenced in its inability to ensure the compliance of Member States to follow the principles and values underlying the integration project in Europe (including the protection of democracy, the Rule of Law, and human rights). This defiance has affected the Union profoundly, and this book dissects the essence of this crisis, examining its history and offering coping methods for the years to come. Defiance is not a new concept and this volume explores the richness of EU-level and national-level examples of historical defiance—the French Empty Chair policy, the Luxembourg compromise, and the FPÖ crisis in Austria—and draws on the experience of the US legal system and that of the integration projects on other continents. Building on this legal-political context, the book focuses on the assessment of the adequacy of the enforcement mechanisms whilst learning from EU integration history. Structured in four parts, the volume studies theoretical issues on defiance in the context of multi-layered legal orders, EU mechanisms of acquis and values’ enforcement, comparative perspective on law-enforcement in multi-layered legal systems, and case-studies of defiance in the EU.
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Iliopoulos-Strangas, Julia, Egils Levits, Michael Potacs, and Jacques Ziller, eds. Die Herausforderungen der digitalen Kommunikation für den Staat und seine demokratische Staatsform | The Challenges of Digital Communication for the State and its Democratic State Form | Les défis de la communication numérique pour l’État et sa forme démocratique. Nomos Verlagsgesellschaft mbH & Co. KG, 2021. http://dx.doi.org/10.5771/9783748923787.

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Constitutional law must integrate the changes in the structure of social communication in the course of the digital revolution into the edifice of constitutional law and general constitutional doctrine, just as it must integrate the increasing dehumanisation of decisions by algorithms and artificial intelligence in both the public and private law spheres. The discussion on these multi-layered and complicated issues were lively debated by experts from theory and practice at the Societas Iuris Publici Europaei (SIPE) conference. Another topic of the conference was the acceptance of the primacy of Union law by the national supreme courts and the question of whether and how a convergence of the different points of view would be possible here.
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Augustine, Matthew C. Aesthetics of contingency. Manchester University Press, 2018. http://dx.doi.org/10.7228/manchester/9781526100764.001.0001.

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Aesthetics of contingency provides an important reconsideration of seventeenth-century literature in light of new understandings of the English past. Emphasising the contingency of the political in revolutionary England and its extended aftermath, Matthew Augustine challenges prevailing literary histories plotted according to structural conflicts and teleological narrative. In their place, he offers an innovative account of imaginative and polemical writing, in an effort to view later seventeenth-century literature on its own terms: without certainty about the future, or indeed the recent past. In hewing to this premise, the familiar outline of the period – with red lines drawn at 1642, 1660, or 1688 – becomes suggestively blurred. For all of Milton’s prophetic gestures, for all of Dryden’s presumption to speak for, to epitomise his Age, writing from the later decades of the seventeenth century remained supremely responsive to uncertainty, to the tremors of civil conflict and to the enduring crises and contradictions of Stuart governance. A study of major writings from the Personal Rule to the Glorious Revolution and beyond, this book also re-examines the material conditions of literature in this age. By carefully deciphering the multi-layered forces at work in acts of writing and reception, and with due consideration for the forms in which texts were cast, this book explores the complex nature of making meaning in and making meaning out of later Stuart England.
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Hardy, Duncan. Associative Political Culture in the Holy Roman Empire. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780198827252.001.0001.

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What was the Holy Roman Empire in the fourteenth to sixteenth centuries? At the turning point between the medieval and early modern periods, this vast central European polity was the continent’s most politically fragmented. The imperial monarchs were often weak and distant, while an array of regional actors played autonomous political roles. The Empire’s obvious differences from more centralized European kingdoms have stimulated negative judgements and fraught debates, expressed in the historiographical concepts of fractured ‘territorial states’ and a disjointed ‘imperial constitution’. This book challenges these interpretations through a wide-ranging case study of Upper Germany between 1346 and 1521. By examining the interactions of princes, prelates, nobles, and towns comparatively, it demonstrates that a range of actors and authorities shared the same toolkit of rituals, judicial systems, and configurations of government. Crucially, Upper German elites all participated in leagues, alliances, and other treaty-based associations. As frameworks for collective activity, associations were a vital means of enabling and regulating warfare, justice and arbitration, and even lordship and administration. The prevalence of associations encouraged a mentality of ‘horizontal’ membership of political communities, so that even the Empire itself came to be understood and articulated as an extensive and multi-layered association. On the basis of this evidence, the book offers a new and more coherent vision of the Holy Roman Empire as a sprawling community of interdependent elites who interacted within the framework of a shared ‘associative political culture’, which constituted an alternative structure and pathway of political development in pre-modern Europe.
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Book chapters on the topic "Multi-layered structures"

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Shih, C. F. "Some Mechanics Problems of Multi-Layered Materials." In Fracture of Engineering Materials and Structures, 3–12. Dordrecht: Springer Netherlands, 1991. http://dx.doi.org/10.1007/978-94-011-3650-1_1.

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Dwibedy, Kartikeswar, and Anup Ghosh. "Damage analysis of multi-layered composite structures." In Aerospace and Associated Technology, 202–5. London: Routledge, 2022. http://dx.doi.org/10.1201/9781003324539-36.

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Kaithoju, Srujan Varma, D. Vijay Venu Gopal, V. Aastritha Vatchala, and Uzair Ahmed. "Behaviour of Multi-layered Hybrid Fibrous Ferrocement Panels." In Advances in Lightweight Materials and Structures, 187–96. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-7827-4_18.

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Baratta, A., I. Corbi, and O. Corbi. "Analysis of stresses in curved multi-layered structures." In Insights and Innovations in Structural Engineering, Mechanics and Computation, 1697–700. Taylor & Francis Group, 6000 Broken Sound Parkway NW, Suite 300, Boca Raton, FL 33487-2742: CRC Press, 2016. http://dx.doi.org/10.1201/9781315641645-280.

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Aghalovyan, Lenser A., and Ruben Z. Hovhannisyan. "On Behavior of Multi-Layered Bases- Foundations and Seismoisolators." In Emboding Intelligence in Structures and Integrated Systems, 237–46. Stafa: Trans Tech Publications Ltd., 2008. http://dx.doi.org/10.4028/3-908158-13-3.237.

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Mottram, J. T. "High-Order Analysis of General Multi-layered Rectangular Plates Subjected to Transverse Loading." In Composite Structures 5, 503–19. Dordrecht: Springer Netherlands, 1989. http://dx.doi.org/10.1007/978-94-009-1125-3_28.

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Yu, Pei-Ling, Pan-Lung Tsai, and Chin-Laung Lei. "A Content-Protection Scheme for Multi-Layered Reselling Structures." In Security and Protection in Information Processing Systems, 339–49. Boston, MA: Springer US, 2004. http://dx.doi.org/10.1007/1-4020-8143-x_22.

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Park, Sung Woo, Jong Woo Rhee, Weon Keun Song, and Moon Kyum Kim. "Dynamic Behavior of Underground Structures in Multi-Layered Media." In Key Engineering Materials, 78–83. Stafa: Trans Tech Publications Ltd., 2005. http://dx.doi.org/10.4028/0-87849-978-4.78.

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Bîrsan, Mircea, and Holm Altenbach. "Analysis of the Deformation of Multi-layered Orthotropic Cylindrical Elastic Shells Using the Direct Approach." In Shell-like Structures, 29–52. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-21855-2_3.

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Achenbach, J. D., I. N. Komsky, and M. Zhang. "Oblique Pitch-Catch Imaging of Defects in Multi-Layered Structures." In Acoustical Imaging, 745–50. Boston, MA: Springer US, 1996. http://dx.doi.org/10.1007/978-1-4419-8772-3_121.

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Conference papers on the topic "Multi-layered structures"

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Gandhi, Farhan, Gabriel Murray, and Sang-Guk Kang. "Flexural Stiffness Control of Multi-Layered Beams." In 49th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference
16th AIAA/ASME/AHS Adaptive Structures Conference
10t
. Reston, Virigina: American Institute of Aeronautics and Astronautics, 2008. http://dx.doi.org/10.2514/6.2008-2205.

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Hur, Hae-Kyu, and Min-Sung Kim. "Ballistic Resistance of Multi-Layered Sandwich Composites." In 51st AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference
18th AIAA/ASME/AHS Adaptive Structures Conference
12th
. Reston, Virigina: American Institute of Aeronautics and Astronautics, 2010. http://dx.doi.org/10.2514/6.2010-2869.

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Quarry, M. J. "Guided Wave Inspection of Multi-Layered Structures." In QUANTITATIVE NONDESTRUCTIVE EVALUATION. AIP, 2004. http://dx.doi.org/10.1063/1.1711631.

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Morrison, Murray J., and Anne D. Cope. "Wind Performance and Evaluation Methods of Multi-Layered Wall Assemblies." In Structures Congress 2015. Reston, VA: American Society of Civil Engineers, 2015. http://dx.doi.org/10.1061/9780784479117.237.

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Autran, Pauline, David Materkowski, and George A. Lesieutre. "Multi-layered Radial Isolator for Helicopter Interior Noise Reduction." In 54th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference. Reston, Virginia: American Institute of Aeronautics and Astronautics, 2013. http://dx.doi.org/10.2514/6.2013-1831.

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Ma, Deyi, Danlu Song, and Hongyan Zhou. "Multi-layered precision metal structures by LCLD fabrication." In ICMIT 2005: Merchatronics, MEMS, and Smart Materials, edited by Yunlong Wei, Kil To Chong, Takayuki Takahashi, Shengping Liu, Zushu Li, Zhongwei Jiang, and Jin Young Choi. SPIE, 2005. http://dx.doi.org/10.1117/12.664264.

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Chady, T. "Eddy current tomography of multi-layered aluminum structures." In 26th Annual review of progress in quantitative nondestrictive evaluation. AIP, 2000. http://dx.doi.org/10.1063/1.1306080.

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Rizza, C., E. Palange, and A. Ciattoni. "Artificial electromagnetic chirality in multi-layered metamaterial structures." In 2014 Third Mediterranean Photonics Conference. IEEE, 2014. http://dx.doi.org/10.1109/mephoco.2014.6866476.

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Unal, Ahmet, and Gang Wang. "Wave Propagation in Multi-Layered Elastic Beam." In ASME 2012 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/smasis2012-7939.

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In this paper, a spectral finite element model (SFEM) is developed for an n-layered elastic beam and subsequently used to investigate its dynamic response and wave propagation characteristics. Each layer of the beam is idealized by a Timoshenko beam, in which shear deformation as well as rotational inertia are included. This higher order theory is critical to capture high frequency response of the multi-layered beam structures. Semi-analytical solutions were determined for the governing equations in order to construct the SFEM. Our frequency predictions were validated by the results of two and three-layer beams in the literature and good correlations were achieved. Fewer elements were used in our SFEM compared to conventional finite element based approaches, which substantially benefits the ultrasonic frequency simulations. Wave propagation responses were calculated for a two-layer beam, in which a notch in the top layer was assumed to represent the damage case. Wave reflection from the notch was observed to indicate the existence of damage. This newly developed SFEM can be served as a platform to conduct comprehensive simulations in order to capture wave propagation characteristics in multi-layered beam structures.
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Wang, Li, Guiqiang Du, Bingyuan Zhang, and Changzheng Wang. "Surface plasmon polaritons of multi-layered structures containing metamaterial." In Seventh International Conference on Thin Film Physics and Applications, edited by Junhao Chu and Zhanshan Wang. SPIE, 2010. http://dx.doi.org/10.1117/12.888180.

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Reports on the topic "Multi-layered structures"

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Fisher, K. Mointoring Thickness Deviations in Planar Multi-Layered Elastic Structures Using Impedance Signatures. Office of Scientific and Technical Information (OSTI), January 2007. http://dx.doi.org/10.2172/914620.

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Dauskardt, Reinhold H. Final Progress Report: FRACTURE AND SUBCRITICAL DEBONDING IN THIN LAYERED STRUCTURES: EXPERIMENTS AND MULTI-SCALE MODELING. Office of Scientific and Technical Information (OSTI), August 2005. http://dx.doi.org/10.2172/877945.

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Rose, Luo, and Minachi. ZZ44154 Circumferential Guided Waves for Defect Detection in Tar Coated Pipe. Chantilly, Virginia: Pipeline Research Council International, Inc. (PRCI), January 2008. http://dx.doi.org/10.55274/r0010958.

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The study reports on circumferential guided wave inspection potential and propagation in a tar coated pipe. A computer code based on a matrix technique was developed to calculate the circumferential guided wave dispersion curves and wave structures in a viscoelastic multi-layered pipe. Experiments utilizing the SwRI Magnetostrictive ILI inspection technique were conducted under different coating conditions. There was a favorable agreement with theory. This study provides an insight into attenuation effect, ways to improve propagation distance, and a baseline for further studies on wave scattering, defect classification and sizing.
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Tanny, Josef, Gabriel Katul, Shabtai Cohen, and Meir Teitel. Micrometeorological methods for inferring whole canopy evapotranspiration in large agricultural structures: measurements and modeling. United States Department of Agriculture, October 2015. http://dx.doi.org/10.32747/2015.7594402.bard.

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Original objectives and revisions The original objectives as stated in the approved proposal were: (1) To establish guidelines for the use of micrometeorological techniques as accurate, reliable and low-cost tools for continuous monitoring of whole canopy ET of common crops grown in large agricultural structures. (2) To adapt existing methods for protected cultivation environments. (3) To combine previously derived theoretical models of air flow and scalar fluxes in large agricultural structures (an outcome of our previous BARD project) with ET data derived from application of turbulent transport techniques for different crops and structure types. All the objectives have been successfully addressed. The study was focused on both screenhouses and naturally ventilated greenhouses, and all proposed methods were examined. Background to the topic Our previous BARD project established that the eddy covariance (EC) technique is suitable for whole canopy evapotranspiration measurements in large agricultural screenhouses. Nevertheless, the eddy covariance technique remains difficult to apply in the farm due to costs, operational complexity, and post-processing of data – thereby inviting alternative techniques to be developed. The subject of this project was: 1) the evaluation of four turbulent transport (TT) techniques, namely, Surface Renewal (SR), Flux-Variance (FV), Half-order Time Derivative (HTD) and Bowen Ratio (BR), whose instrumentation needs and operational demands are not as elaborate as the EC, to estimate evapotranspiration within large agricultural structures; and 2) the development of mathematical models able to predict water savings and account for the external environmental conditions, physiological properties of the plant, and structure properties as well as to evaluate the necessary micrometeorological conditions for utilizing the above turbulent transfer methods in such protected environments. Major conclusions and achievements The major conclusions are: (i) the SR and FV techniques were suitable for reliable estimates of ET in shading and insect-proof screenhouses; (ii) The BR technique was reliable in shading screenhouses; (iii) HTD provided reasonable results in the shading and insect proof screenhouses; (iv) Quality control analysis of the EC method showed that conditions in the shading and insect proof screenhouses were reasonable for flux measurements. However, in the plastic covered greenhouse energy balance closure was poor. Therefore, the alternative methods could not be analyzed in the greenhouse; (v) A multi-layered flux footprint model was developed for a ‘generic’ crop canopy situated within a protected environment such as a large screenhouse. The new model accounts for the vertically distributed sources and sinks within the canopy volume as well as for modifications introduced by the screen on the flow field and microenvironment. The effect of the screen on fetch as a function of its relative height above the canopy is then studied for the first time and compared to the case where the screen is absent. The model calculations agreed with field experiments based on EC measurements from two screenhouse experiments. Implications, both scientific and agricultural The study established for the first time, both experimentally and theoretically, the use of four simple TT techniques for ET estimates within large agricultural screenhouses. Such measurements, along with reliable theoretical models, will enable the future development of lowcost ET monitoring system which will be attainable for day-to-day use by growers in improving irrigation management.
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