Relevant bibliographies by topics / High Order Displacement Field

Contents

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

Academic literature on the topic 'High Order Displacement Field'

Author: Grafiati
Published: 4 June 2021
Last updated: 21 February 2023

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Journal articles on the topic "High Order Displacement Field"

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Machida, Kenji, and Yoshimasa Suzuki. "Examination of Accuracy of the Singular Stress Field Near a Crack-Tip by Digital Image Correlation." Key Engineering Materials 321-323 (October 2006): 32–37. http://dx.doi.org/10.4028/www.scientific.net/kem.321-323.32.

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Displacements obtained experimentally normally are including errors that make it impossible to extract stresses strains with high accuracy using the raw displacement data. In the infinitesimal deformation within the elastic region of a steel or an aluminum alloy, the quantity of displacement is less than 1 pixel, and analysis accuracy deteriorates. We have developed a system which employs the 2-D intelligent hybrid method and can analyze the displacement more exactly in the sub-pixel field. By using the Newton-Raphson method in conjunction with 2nd order deformation gradients, it is demonstrat
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Taoutioui, Abdelmalek, and Hicham Agueny. "Femtosecond Single Cycle Pulses Enhanced the Efficiency of High Order Harmonic Generation." Micromachines 12, no. 6 (2021): 610. http://dx.doi.org/10.3390/mi12060610.

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High-order harmonic generation is a nonlinear process that converts the gained energy during light-matter interaction into high-frequency radiation, thus resulting in the generation of coherent attosecond pulses in the XUV and soft x-ray regions. Here, we propose a control scheme for enhancing the efficiency of HHG process induced by an intense near-infrared (NIR) multi-cycle laser pulse. The scheme is based on introducing an infrared (IR) single-cycle pulse and exploiting its characteristic feature that manifests by a non-zero displacement effect to generate high-photon energy. The proposed s
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Wang, Ya-Qiong, Shao-Bing Zhang, Long-Long Chen, Yong-Li Xie, and Zhi-Feng Wang. "Field monitoring on deformation of high rock slope during highway construction: A case study in Wenzhou, China." International Journal of Distributed Sensor Networks 15, no. 12 (2019): 155014771989595. http://dx.doi.org/10.1177/1550147719895953.

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In order to study the deformation stability of rock slope during the excavation of cutting slope and ensure the safety of rock slope during construction and operation period, this article analyzed the deformation law of a typical slope excavation by monitoring the surface deformation and the internal displacement of the rock mass. The surface deformation of the slope is monitored by setting monitoring points, and the internal deformation of the slope is monitored by installing multipoint displacement meters and inclinometers. Therefore, the relationship between slope excavation and deformation
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Felippa, Carlos A. "The Extended Free Formulation of Finite Elements in Linear Elasticity." Journal of Applied Mechanics 56, no. 3 (1989): 609–16. http://dx.doi.org/10.1115/1.3176135.

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The free formulation of Bergan and Nyga˚rd (1984) has been successfully used in the construction of high-performance finite elements for linear and nonlinear structural analysis. In its original form the formulation combines nonconforming internal displacement assumptions with a specialized version of the patch test. The original formulation is limited, however, by strict invertibility conditions linking the assumed displacement field to the nodal displacements. The present paper lifts those restrictions by recasting the free formulation within the framework of a mixed-hybrid functional that a
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Okada, H., H. Rajiyah, and S. N. Atluri. "A Novel Displacement Gradient Boundary Element Method for Elastic Stress Analysis With High Accuracy." Journal of Applied Mechanics 55, no. 4 (1988): 786–94. http://dx.doi.org/10.1115/1.3173723.

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The boundary element method (BEM) in current usage, is based on the displacement boundary integral equation. The current practice of computing stresses in the BEM involves the use of a two-tier approach: (i) numerical differentiation of the displacement field at the boundary, and (ii) analytical differentiation of the displacement integral equation at the source point in the interior. A new direct integral equation for the displacement gradient is proposed here, to obviate this two-tier approach. The new direct boundary integral equation for displacement gradients has a lower order singularity
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Guan, Kai Sen, Yu He Li, Yan Xiang Chen, and Yong Rong Qiu. "A Novel Optical Fiber Displacement Measurement System." Applied Mechanics and Materials 599-601 (August 2014): 684–88. http://dx.doi.org/10.4028/www.scientific.net/amm.599-601.684.

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In order to meet the displacement measurement’s need for high precision and large measuring range, a novel design of optical fiber displacement system is proposed. Optical fiber is applied to the displacement measurement field with its simple structure, light weight, cheap cost and high precision. A displacement measurement model based on transmissive optical fiber is established, and theoretical calculation and simulation are conducted to verify the accuracy of the model. Displacement measuring experiments are completed and the results show that the transmissive optical fiber displacement mea
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Mikhaylenko, Andrey, Natalie Rauter, Nanda Kishore Bellam Bellam Muralidhar, Tilmann Barth, Dirk A. Lorenz, and Rolf Lammering. "Numerical Analysis of the Main Wave Propagation Characteristics in a Steel-CFRP Laminate Including Model Order Reduction." Acoustics 4, no. 3 (2022): 517–37. http://dx.doi.org/10.3390/acoustics4030032.

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Guided ultrasonic waves are suitable for use in the context of structural health monitoring of thin-walled, plate-like structures. Hence, observing the wave propagation in the plates can provide an indication of whether damage has occurred in the structure. In this work, the wave propagation in fiber metal laminate consisting of thin steel foils and layers of carbon fiber-reinforced polymer is studied, focusing on the main propagation characteristics like dispersion diagrams and displacement fields. For this purpose, the dispersion diagrams derived from the analytical framework and numerical s
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Guo, Qi Feng, Fen Hua Ren, and Zhao Cai Zhang. "Stabality Analysis of Deep Roadway Based on Coupled Thermo-Hydro-Mechanical Behaviors." Advanced Materials Research 594-597 (November 2012): 2564–68. http://dx.doi.org/10.4028/www.scientific.net/amr.594-597.2564.

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In order to research the stability of excavation in deep mines under high ground stress, high rock temperature and high karst hydraulic, the interaction of stress field, seepage field and temperature field are discussed through basic constitutive relation, seepage equation, thermometer equation and coupled thermo-hydro-mechanical equation. A numerical model was built to simulate the excavation of deep roadway. The result shows that the simulated ground stress based on three fields coupled is much closer to the field measured value and the change of stress and displacement caused by the excavat
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Wang, Changsheng, Xiaoxiao Sun, Xiangkui Zhang, and Ping Hu. "High-order quasi-conforming triangular Reissner-Mindlin plate element." Engineering Computations 35, no. 8 (2018): 2722–52. http://dx.doi.org/10.1108/ec-11-2017-0446.

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PurposeA higher-order Reissner-Mindlin plate element method is presented based on the framework of assumed stress quasi-conforming method and Hellinger-Reissner variational principle. A novel six-node triangular plate element is proposed by utilizing this method for the static and free vibration analysis of Reissner-Mindlin plates.Design/methodology/approachFirst, the initial assumed stress field is derived by using the fundamental analytical solutions which satisfy all governing equations. Then the stress matrix is treated as the weighted function to weaken the strain-displacement equations a
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Li, Peng Fei, Yuan Yuan, and Hong Zhao Liu. "Beam Element Considering the Warping Effect of Cross Section in Large Displacement Finite Element Analysis." Applied Mechanics and Materials 152-154 (January 2012): 958–63. http://dx.doi.org/10.4028/www.scientific.net/amm.152-154.958.

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A simple two-dimensional shear deformable finite beam element is developed in order to examine the effect of the high order interpolation on the modes of deformation of the beam cross section using the ANCF finite element. The new element allows for effect of warping that cannot be captured using previously introduced ANCF beam elements, and relaxes the assumption of planar cross section. The displacement field of the new element is assumed to be cubic in the axial direction and quadratic in the transverse direction. Using this displacement field, new shape functions are formulated and include
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Dissertations / Theses on the topic "High Order Displacement Field"

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Chee, Clinton Yat Kuan. "STATIC SHAPE CONTROL OF LAMINATED COMPOSITE PLATE SMART STRUCTURE USING PIEZOELECTRIC ACTUATORS ©." Thesis, The University of Sydney, 2000. http://hdl.handle.net/2123/709.

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The application of static shape control was investigated in this thesis particularly for a composite plate configuration using piezoelectric actuators. A new electro-mechanically coupled mathematical model was developed for the analysis and is based on a third order displacement field coupled with a layerwise electric potential concept. This formulation, TODL, is then implemented into a finite element program. The mathematical model represents an improvement over existing formulations used to model intelligent structures using piezoelectric materials as actuators and sensors. The reason is TOD
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Chee, Clinton Yat Kuan. "STATIC SHAPE CONTROL OF LAMINATED COMPOSITE PLATE SMART STRUCTURE USING PIEZOELECTRIC ACTUATORS �." University of Sydney. Aeronautical Engineering, 2000. http://hdl.handle.net/2123/709.

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The application of static shape control was investigated in this thesis particularly for a composite plate configuration using piezoelectric actuators. A new electro-mechanically coupled mathematical model was developed for the analysis and is based on a third order displacement field coupled with a layerwise electric potential concept. This formulation, TODL, is then implemented into a finite element program. The mathematical model represents an improvement over existing formulations used to model intelligent structures using piezoelectric materials as actuators and sensors. The reason is TOD
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JIMENEZ, HERNAN RENATO GAVILANES. "ANALYSIS OF THE DISPLACEMENT FIELD IN THE STABILITY OF HIGH-RISE MINING SLOPES." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 1999. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=1250@1.

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COORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOR<br>A avaliação da estabilidade do talude da Mina Robert (Canadá) é feita através do campo de deslocamentos de marcos superficiais e subsuperficiais e possíveis mecanismos de ruptura obtidos a partir da análise tensão- deformação usando-se o programa computacional FLAC (V. 3.30). Adotando-se o emprego dos modelos constitutivos elástico perfeitamente plástico e elasto-plástico com amolecimento, são calculados o fator de segurança e a porcentagem da região de plastificação, e são definidas as características de comportamento ci
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Kong, Fanqi. "High-Order Harmonic Generation with Structured Beams." Thesis, Université d'Ottawa / University of Ottawa, 2019. http://hdl.handle.net/10393/39609.

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The generation of high-order harmonics opened an era of attosecond science wherein coherent light bursts are used to probe dynamic processes in matter with a time resolution short enough to resolve the motions of electrons. It enabled the development of extreme ultraviolet (XUV) and X-ray table-top sources with both temporal and spatial coherence, which provides the ability to shape the temporal and spatial structure of the XUV pulses. Scientists developed techniques to control and measure the temporal structure high harmonic emissions. These techniques exploited control of the driving laser
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Alharbi, Abdullah F. "High-order Harmonic Spectroscopy of Cyclic Organic Molecules." Thesis, Université d'Ottawa / University of Ottawa, 2016. http://hdl.handle.net/10393/35179.

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Understanding the electronic structure and dynamics of cyclic organic molecules is becoming increasingly the subject of investigations from different perspectives due to their unique chemical and physical properties. Since they are largely involved in the biochemistry of living organisms, studies on this class of compounds are also valuable to understand biologically relevant complex systems. Compared to other techniques, high-order harmonic generation (HHG) has been increasingly considered as a powerful spectroscopic tool with Angstrom spatial and attosecond temporal resolutions. This thesis
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Zhao, Lishan. "Uniaxial strain and high magnetic field investigation on materials with novel order parameters." Thesis, University of St Andrews, 2016. http://hdl.handle.net/10023/9075.

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At low temperatures, strongly correlated materials, which typically contain partially filled d- or f-electron shells, often exhibit phases with interesting properties, which may be of both research value and technological significance. The mechanisms of phase formation in them if could be clarified, are believed to be able to provide important insights not only into physics but also into the design of new materials. In this thesis, the experimental study of two strongly correlated materials, Sr₂RuO₄ and CeAuSb₂ is presented. Sr₂RuO₄ is an unconventional superconductor, and a strong candidate f
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Kajberg, Jörgen. "Displacement field measurement using digital speckle photography for characterisation of materials subjected to large deformations and high strain rates /." Luleå, 2003. http://epubl.luth.se/1402-1544/2003/35.

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Pfeiffer, Robert. "HIGH-ORDER INTEGRAL EQUATION METHODS FOR QUASI-MAGNETOSTATIC AND CORROSION-RELATED FIELD ANALYSIS WITH MARITIME APPLICATIONS." UKnowledge, 2018. https://uknowledge.uky.edu/ece_etds/119.

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This dissertation presents techniques for high-order simulation of electromagnetic fields, particularly for problems involving ships with ferromagnetic hulls and active corrosion-protection systems. A set of numerically constrained hexahedral basis functions for volume integral equation discretization is presented in a method-of-moments context. Test simulations demonstrate the accuracy achievable with these functions as well as the improvement brought about in system conditioning when compared to other basis sets. A general method for converting between a locally-corrected Nyström discretizat
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Kern, Alexander Marco. "Quantification of the performance of 3D sound field reconstruction algorithms using high-density loudspeaker arrays and 3rd order sound field microphone measurements." Thesis, Virginia Tech, 2017. http://hdl.handle.net/10919/77516.

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The development and improvement of 3-D immersive audio is gaining momentum through the growing interest in virtual reality. Possible applications reach from recreating real world environments to immersive concerts and performances to exploiting big data acoustically. To improve the immersive experience several measures can be taken. The recording of the sound field, the spatialization and the development of the loudspeaker arrays are some of the greatest challenges. In this thesis, these challenges for improving immersive audio will be explored. First, there will be a short introduction about
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Petrova, Rumyana. "Quantitative High-Angle Annular Dark Field Scanning Transmission to Electron Microscopy for Materials Science." Doctoral diss., University of Central Florida, 2006. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/4304.

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Scanning transmission electron microscopy (STEM) has been widely used for characterization of materials; to identify micro- and nano-structures within a sample and to analyze crystal and defect structures. High-angle annular dark field (HAADF) STEM imaging using atomic number (Z) contrast has proven capable of resolving atomic structures with better than 2 A lateral resolution. In this work, the HAADF STEM imaging mode is used in combination with multislice simulations. This combination is applied to the investigation of the temperature dependence of the intensity collected by the HAADF detect
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Books on the topic "High Order Displacement Field"

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Daneykin, Yuriy, Yuriy Doroshenko, Bagrat Erznkyan, and Valeriy Tumin. Management of the development of a high-tech industrial complex. INFRA-M Academic Publishing LLC., 2023. http://dx.doi.org/10.12737/1911655.

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The monograph is devoted to topical issues of managing the development of high-tech industrial complexes in order to achieve technological sovereignty of the Russian Federation. The author's concept of managing the development of a high-tech industrial complex at the meso-level is presented, the issues of assessing the contribution of innovative ecosystems and high-tech industrial complexes to the development of the region are highlighted. Special attention is paid to innovative scientific and technological centers in achieving the goals of innovative and technological development of industry.
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Federighi, Paolo, and Francesca Torlone, eds. Low skilled take their qualifications "one step up". Firenze University Press, 2010. http://dx.doi.org/10.36253/978-88-6453-179-3.

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Adult learning is recognized as a key component of lifelong learning and Member States are required to remove barriers to participation, to increase overall quality and efficiency in adult learning, to speed up the process of validation and recognition and to ensure sufficient investment in and monitoring of the field (European Commission, 2006, 2007; European Parliament, 2008; European Council, 2008). It is unanimously recognized that adult learning can play a pivotal role in meeting the goals of the Lisbon Strategy, by fostering social cohesion, providing citizens with the skills required to
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Cevelev, Aleksandr. Strategic development of railway transport logistics. INFRA-M Academic Publishing LLC., 2021. http://dx.doi.org/10.12737/1194747.

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The monograph is devoted to the methodology of material and technical support of railway transport. According to the types of activities, the nature of the material and technical resources used, technologies, means and management systems, Russian railways belong to the category of high-tech industries that must have high quality and technical level, reliability and technological efficiency in operation. For this reason, the logistics system itself, both in structure and in the algorithm of the functions performed as a whole, needs a serious improvement in the quality of its work. The economic
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Bogumil, Veniamin, and Sarango Duke. Telematics on urban passenger transport. INFRA-M Academic Publishing LLC., 2022. http://dx.doi.org/10.12737/1819882.

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The monograph discusses the application of telematics in dispatch control systems in urban passenger transport. The role of telematics as a technological basis in automating the solution of control tasks, accounting and analysis of the volume and quality of transport work in modern dispatch control systems on urban passenger transport is shown. Analytical models have been developed to estimate the capacity of a high-speed bus transportation system on a dedicated line. Mathematical models and algorithms for predicting passenger vehicle interior filling at critical stages of urban passenger tran
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Lu, Zhong-Lin, and George Sperling. Second-Order Reversed Phi. Oxford University Press, 2017. http://dx.doi.org/10.1093/acprof:oso/9780199794607.003.0071.

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A second-order reversed-phi stimulus is composed of moving features (areas filled with texture) whose overall amount of texture-contrast is reversed between successive frames. In peripheral vision, the stimulus is perceived as moving in the reversed direction (opposite to the feature displacement). In central vision, it is perceived in the forward direction at low temporal frequencies but in the reversed direction at high temporal frequencies. Moving the observer away from the displays has the same effect as changing from central to periphery vision: reversed motion becomes more dominant. The
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Zinn-Justin, Jean. Quantum Field Theory and Critical Phenomena. 5th ed. Oxford University Press, 2021. http://dx.doi.org/10.1093/oso/9780198834625.001.0001.

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Introduced as a quantum extension of Maxwell's classical theory, quantum electrodynamic (QED) has been the first example of a quantum field theory (QFT). Eventually, QFT has become the framework for the discussion of all fundamental interactions at the microscopic scale except, possibly, gravity. More surprisingly, it has also provided a framework for the understanding of second order phase transitions in statistical mechanics. In fact, as hopefully this work illustrates, QFT is the natural framework for the discussion of most systems involving an infinite number of degrees of freedom with loc
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Massam, Diane. Niuean. Oxford University Press, 2020. http://dx.doi.org/10.1093/oso/9780198793557.001.0001.

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This book presents a detailed descriptive and theoretical examination of predicate-argument structure in Niuean, a Polynesian language within the Oceanic branch of the Austronesian family, spoken mainly on the Pacific island of Niue and in New Zealand. Niuean has VSO word order and an ergative case-marking system, both of which raise questions for a subject-predicate view of sentence structure. Working within a broadly Minimalist framework, this volume develops an analysis in which syntactic arguments are not merged locally to their thematic sources, but instead are merged high, above an inver
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Wright, A. G. Environmental considerations. Oxford University Press, 2017. http://dx.doi.org/10.1093/oso/9780199565092.003.0012.

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Magnetic fields, with a magnitude comparable with that of the earth (10−4 tesla), affect trajectories of electrons and hence gain and collection efficiency. The inclusion of a high-permeability shield usually offers sufficient protection. Photomultiplier (PMT) performance is affected by electric field gradients generated by the proximity of a metal housing. The design criteria of such housings are discussed. Strong magnetic fields of the order of a tesla require special devices. Operation in harsh environments such as those encountered in oil well logging requires performance at high temperatu
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Harrod, Molly, Sanjay Saint, and Robert W. Stock. Teaching Inpatient Medicine. Oxford University Press, 2017. http://dx.doi.org/10.1093/med/9780190671495.001.0001.

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Each year, roughly 18,000 medical students graduate from 170 plus medical schools in the United States. Nearly all of these graduates will continue their medical education at one of the more than 1,000 teaching hospitals across the country. Because of the reduction in the resident work week and the more recent intern shift cap, medical education on the wards must be high yield. This educational responsibility falls on the shoulders of attending physicians, few of whom have had formal education in teaching. This book utilized an in-depth exploratory, qualitative approach to uncover how a group
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Samuels, Richard, Eric Margolis, and Stephen P. Stich. Introduction: Philosophy and Cognitive Science. Edited by Eric Margolis, Richard Samuels, and Stephen P. Stich. Oxford University Press, 2012. http://dx.doi.org/10.1093/oxfordhb/9780195309799.013.0001.

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This chapter offers a high-level overview of the philosophy of cognitive science and an introduction toThe Oxford Handbook of Philosophy of Cognitive Science. The philosophy of cognitive science emerged out of a set of common and overlapping interests among philosophers and scientists who study the mind. We identify five categories of issues that illustrate the best work in this broad field: (1) traditional philosophical issues about the mind that have been invigorated by research in cognitive science, (2) issues regarding the practice of cognitive science and its foundational assumptions, (3)
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Book chapters on the topic "High Order Displacement Field"

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Tarasevitch, Alexander, Clemens Wünsche, and Dietrich von der Linde. "High-Order Harmonics from Plasma Surfaces." In Strong Field Laser Physics. Springer New York, 2008. http://dx.doi.org/10.1007/978-0-387-34755-4_14.

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Salières, Pascal, and Ivan Christov. "Macroscopic Effects in High-Order Harmonic Generation." In Strong Field Laser Physics. Springer New York, 2008. http://dx.doi.org/10.1007/978-0-387-34755-4_12.

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Schelten, Kevin, and Stefan Roth. "Mean Field for Continuous High-Order MRFs." In Lecture Notes in Computer Science. Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-32717-9_6.

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Serrat, Carles. "Strong-Field-Enhanced Forward Scattering of High-Order Harmonics." In Springer Proceedings in Physics. Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-13242-6_24.

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Van Woerkom, L. D., S. Evans, P. Hansch, and M. A. Walker. "Intense Laser Interactions: Higher Order Resonances and Hot Electrons." In Applications of High-Field and Short Wavelength Sources. Springer US, 1998. http://dx.doi.org/10.1007/978-1-4757-9241-6_37.

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Gaarde, M. B., C. Altucci, M. Bellini, et al. "Phase-Locking of High-Order Harmonics to the Fundamental Field." In Applications of High-Field and Short Wavelength Sources. Springer US, 1998. http://dx.doi.org/10.1007/978-1-4757-9241-6_6.

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Lewenstein, Maciej, and Anne L’Huillier. "Principles of Single Atom Physics: High-Order Harmonic Generation, Above-Threshold Ionization and Non-Sequential Ionization." In Strong Field Laser Physics. Springer New York, 2008. http://dx.doi.org/10.1007/978-0-387-34755-4_7.

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Lange, H. R., A. A. Chiron, A. Bouhal, et al. "Increased Coherence Length in High-Order Harmonic Generation by a Self-Guided Beam." In Applications of High-Field and Short Wavelength Sources. Springer US, 1998. http://dx.doi.org/10.1007/978-1-4757-9241-6_12.

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Xue, Peng, Enqing Dong, and Huizhong Ji. "High-Order Markov Random Field Based Image Registration for Pulmonary CT." In Communications in Computer and Information Science. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-39343-4_29.

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Enea, Marco, Alfonso Pagani, and Erasmo Carrera. "Damage Detection in Composites by AI and High-Order Modelling Surface-Strain-Displacement Analysis." In Lecture Notes in Civil Engineering. Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-07322-9_34.

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Conference papers on the topic "High Order Displacement Field"

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Balch, Chad D. "Structural Finite Elements With High-Order Basis Functions." In ASME 1991 International Computers in Engineering Conference and Exposition. American Society of Mechanical Engineers, 1991. http://dx.doi.org/10.1115/cie1991-0099.

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Abstract In the p-version of the finite element method, convergence is achieved by increasing the polynomial order of the elements. This paper discusses high-order three-dimensional carved beam and shell elements which have been implemented in a general purpose p-version linear finite element code. The displacement and rotation fields are represented by polynomials up to ninth order. Beam axes are three-dimensional space curves, and shell midsurfaces are general doubly-curved surfaces. Results for linear static and modal analyses are presented. In particular, it is demonstrated that a relative
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Iliopoulos, Athanasios, and John G. Michopoulos. "High Performance Parallelized Centroid Estimation of Image Components for Full Field Measurements." In ASME 2014 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/detc2014-34937.

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Full field measurement methods require digital image processing algorithms to accomplish centroid identification of components of the image of a deforming structure and track them through subsequent video frames in order to establish displacement and strain measurements. Unfortunately, these image processing algorithms are the most computationally expensive tasks performed in such methods. In this work we present a set of new algorithms that can be used to identify centroids of image features that are shown to be orders of magnitude faster than conventional algorithms. These algorithms are bas
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Chatelet, Eric, Thouraya Nouri Baranger, Georges Jacquet-Richardet, and Aurélien Saulot. "Identification of Contact Area From Full Field Displacement Surface Measurements." In ASME Turbo Expo 2014: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/gt2014-25504.

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One of the most common failure modes for turbomachinery wheels is associated to high-cycle fatigue of blades. A practical way to extend working life is obtained through the introduction of specific devices that allow a reduction in vibrational magnitudes during resonance. Different kinds of components are used such as shrouds and wires for power industries and under platform dampers for aeronautics. The dry friction phenomenon between those devices and the blades induces nonlinear behaviors and flatten associated frequency response functions. This phenomenon is now well known and different mod
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Li, Lin, and Peiyi Wang. "Evaluation of High-Order Resonance of Blade Under Wake Excitation." In ASME Turbo Expo 2010: Power for Land, Sea, and Air. ASMEDC, 2010. http://dx.doi.org/10.1115/gt2010-23148.

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Avoiding the low-order resonances of blades is one of the main design goals for a mechanical structure designer of turbo machinery. However, we have to accept that there are resonance frequencies in the operating speed range of the blade, for the following reasons: Firstly, the natural frequencies of the blade are closely spaced sometimes, it is impossible to avoid them all. Secondly, in general, the higher of the resonance frequency, the lower the energy of resonance will be. But in recent 10 years, the high-order blade resonances present more and more frequently in turbo machinery, which ind
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Nedyalkov, Ivaylo, and Martin Wosnik. "Adaptive-Time-Step High-Frame-Rate Particle Image Velocimetry." In ASME 2016 Fluids Engineering Division Summer Meeting collocated with the ASME 2016 Heat Transfer Summer Conference and the ASME 2016 14th International Conference on Nanochannels, Microchannels, and Minichannels. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/fedsm2016-7748.

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With the availability of high-frame-rate (HFR) PIV systems, it is possible to capture time series of particle images at rates which can exceed the necessary frequency to temporally resolve essential flow. In this case, some of the recorded frames can be skipped, in order to obtain an adequate time step between two images, leading to favorable values for pixel displacement. In this paper a technique for decreasing pixel locking in complex flows based on an adaptive time step processing procedure is proposed. If PIV data are taken at much higher frequency than needed, the processing can be repea
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Li, Chuanke, Paul Barrette, and Ian Jordaan. "High Pressure Zones at Different Scales During Ice-Structure Indentation." In ASME 2004 23rd International Conference on Offshore Mechanics and Arctic Engineering. ASMEDC, 2004. http://dx.doi.org/10.1115/omae2004-51057.

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In order to improve the estimation of the ice load during ice-structure interaction, this study aims to investigate the behaviour of high pressure zones at different scales. Small scale indentation tests of ice with four different sizes of indentors (10 mm, 20 mm, 40 mm and 100 mm in diameter) were conducted at Ocean Engineering Research Centre of Memorial University. The tests were conducted at −10 °C. The grain sizes were scaled up with the indentor sizes. The tests consist of three series with different orders of displacement rates. In this paper, Part of the field test data will be retriev
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Frostig, Y. "Bending of Curved Sandwich Panels With Transversely Flexible Cores: Closed-Form High-Order Theory." In ASME 1997 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 1997. http://dx.doi.org/10.1115/imece1997-0734.

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Abstract The bending behavior of a curved sandwich panel with a transversely flexible core, i.e. “soft” in the out of plane direction, is derived. It is formulated using a rigorous systematic closed-form approach based on variational principles. The effects of the transversely flexible core are incorporated resulting in non-linear patterns, denoted also as high-order effects, for the inplane and the transverse deformations through the height of the core. The governing equations along with the associated boundary and continuity conditions for a general type of sandwich panels, i.e. unidentical
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Okoye, Kenechukwu, Wing Lai, and Taiho Yeom. "Experimental Flow Visualization Study of Flow Separation Control With High-Frequency Translational Surface Actuation." In ASME 2020 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/imece2020-23892.

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Abstract Flow separation causes aircraft to experience an increase in drag degrading their aviation performance. The current study aims to delay flow separation on an airfoil by embedding a high-frequency translational piezoelectric actuator along the surface of the airfoil. The actuators with two actuation surfaces were embedded on the suction surface of an Eppler 862 airfoil model and placed in a low-speed wind tunnel. Consecutive pictures of the flow fields with dry ice fogs around the airfoil were taken using a high speed camera in order to observe the flow separation phenomenon before and
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Arena, Felice, and Francesco Fedele. "Non-Linear Space-Time Evolution of Wave Groups With a High Crest." In ASME 2003 22nd International Conference on Offshore Mechanics and Arctic Engineering. ASMEDC, 2003. http://dx.doi.org/10.1115/omae2003-37161.

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The theory of quasi-determinism, for the mechanics of linear three-dimensional waves, was obtained by Boccotti in the eighties. The first formulation of the theory deals with the largest crest amplitude; the second formulation deals with the largest wave height. The theory was verified in the nineties with some small-scale field experiments. In this paper the first formulation of Boccotti’s theory, valid for the space-time domain, is extended to the second order. The analytical expressions of the non-linear free surface displacement and velocity potential are obtained. Therefore the space-time
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Van Dorp, Johan J. "The Role of Dispersion in Enhanced Gas Recovery and Gas Field Pressure Maintenance." In SPE Conference at Oman Petroleum & Energy Show. SPE, 2022. http://dx.doi.org/10.2118/200261-ms.

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Abstract Objectives Enhanced Gas Recovery (EGR) is the process whereby an inert gas like nitrogen or flue gas is injected in a gas reservoir to improve hydrocarbon gas recovery. One of the objectives of EGR is recovery of remaining gas in place at the prevailing abandonment pressure by sweeping native hydrocarbon gas with an inert gas. This paper treats the reservoir engineering aspects of dispersion in gas displacement by nitrogen. Methods Relevant theory and knowledge from literature are applied to an example sandstone gas reservoir. Results The displacement is typically miscible, and the hi
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Reports on the topic "High Order Displacement Field"

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S.C. Jardin and J.A. Breslau. Implicit Solution of the Four-field Extended-magnetohydroynamic Equations using High-order High-continuity Finite Elements. Office of Scientific and Technical Information (OSTI), 2004. http://dx.doi.org/10.2172/836487.

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Yue, Dick K. Assimilation of Three-Dimensional Phase-Resolved Wave-Field Data Using an Efficient High-Order Spectral Method. Defense Technical Information Center, 2001. http://dx.doi.org/10.21236/ada626896.

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Collyer, Michael, Dolf te Lintelo, Thabani Mutambasere, and Tahir Zaman. Moving Targets: Social Protection as a Link Between Humanitarianism, Development and Displacement. Institute of Development Studies, 2022. http://dx.doi.org/10.19088/basic.2022.017.

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Despite the widespread concern with social protection in the field of development, it has had little impact on displacement until very recently. UNHCR has had a Social Protection Unit since 2009, but social protection is barely mentioned in either the Global Compact on Refugees or the Global Compact for Safe, Orderly and Regular Migration, both agreed in 2018. The period since 2018 has seen a growth of research interest and new policy development. This represents the latest appearance of the humanitarian-development nexus in the field of displacement. This nexus is a long-standing one and is i
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Clausen, Jay, Richard Hark, Russ Harmon, John Plumer, Samuel Beal, and Meghan Bishop. A comparison of handheld field chemical sensors for soil characterization with a focus on LIBS. Engineer Research and Development Center (U.S.), 2022. http://dx.doi.org/10.21079/11681/43282.

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Commercially available handheld chemical analyzers for forensic applications have been available for over a decade. Portable systems from multiple vendors can perform X-ray fluorescence (XRF) spectroscopy, Raman spectroscopy, Fourier transform infrared(FTIR) spectroscopy, and recently laser-induced breakdown spectroscopy (LIBS). Together, we have been exploring the development and potential applications of a multisensor system consisting of XRF, Raman, and LIBS for environmental characterization with a focus on soils from military ranges. Handheld sensors offer the potential to substantially i
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Huntley, D., D. Rotheram-Clarke, R. Cocking, J. Joseph, and P. Bobrowsky. Current research on slow-moving landslides in the Thompson River valley, British Columbia (IMOU 5170 annual report). Natural Resources Canada/CMSS/Information Management, 2022. http://dx.doi.org/10.4095/331175.

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Interdepartmental Memorandum of Understanding (IMOU) 5170 between Natural Resources Canada (NRCAN), the Geological Survey of Canada (GSC) and Transport Canada Innovation Centre (TC-IC) aims to gain new insight into slow-moving landslides, and the influence of climate change, through testing conventional and emerging monitoring technologies. IMOU 5107 focuses on strategically important sections of the national railway network in the Thompson River valley, British Columbia (BC), and the Assiniboine River valley along the borders of Manitoba (MN) and Saskatchewan (SK). Results of this research ar
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Hart, Carl R., and Gregory W. Lyons. A Measurement System for the Study of Nonlinear Propagation Through Arrays of Scatterers. Engineer Research and Development Center (U.S.), 2020. http://dx.doi.org/10.21079/11681/38621.

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Various experimental challenges exist in measuring the spatial and temporal field of a nonlinear acoustic pulse propagating through an array of scatterers. Probe interference and undesirable high-frequency response plague typical approaches with acoustic microphones, which are also limited to resolving the pressure field at a single position. Measurements made with optical methods do not have such drawbacks, and schlieren measurements are particularly well suited to measuring both the spatial and temporal evolution of nonlinear pulse propagation in an array of scatterers. Herein, a measurement
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Ahlgren, Per, Tobias Jeppsson, Esa Stenberg, and Erik Berg. A bibliometric analysis of battery research with the BATTERY 2030+ roadmap as point of departure. Uppsala universitet, 2022. http://dx.doi.org/10.33063/diva-473454.

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In this bibliometric study, we analyze the six battery research subfields identified in the BATTERY 2030+ roadmap: Battery Interface Genome, Materials Acceleration Platform, Recyclability, Smart functionalities: Self-healing, Smart functionalities: Sensing, and Manufacturability. In addition, we analyze the entire research field related to BATTERY 2030+ as a whole, using two operationalizations. We (a) evaluate the European standing in the subfields/the BATTERY 2030+ field in comparison to the rest of the world, and (b) identify strongholds of the subfields/the BATTERY 2030+ field across Europ
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Heitman, Joshua L., Alon Ben-Gal, Thomas J. Sauer, Nurit Agam, and John Havlin. Separating Components of Evapotranspiration to Improve Efficiency in Vineyard Water Management. United States Department of Agriculture, 2014. http://dx.doi.org/10.32747/2014.7594386.bard.

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Vineyards are found on six of seven continents, producing a crop of high economic value with much historic and cultural significance. Because of the wide range of conditions under which grapes are grown, management approaches are highly varied and must be adapted to local climatic constraints. Research has been conducted in the traditionally prominent grape growing regions of Europe, Australia, and the western USA, but far less information is available to guide production under more extreme growing conditions. The overarching goal of this project was to improve understanding of vineyard water
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Stavland, Arne, Siv Marie Åsen, Arild Lohne, Olav Aursjø, and Aksel Hiorth. Recommended polymer workflow: Lab (cm and m scale). University of Stavanger, 2021. http://dx.doi.org/10.31265/usps.201.

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Polymer flooding is one of the most promising EOR methods (Smalley et al. 2018). It is well known and has been used successfully (Pye 1964; Standnes &amp; Skjevrak 2014; Sheng et al. 2015). From a technical perspective we recommend that polymer flooding should be considered as a viable EOR method on the Norwegian Continental Shelf for the following reasons: 1. More oil can be produced with less water injected; this is particularly important for the NCS which are currently producing more water than oil 2. Polymers will increase the aerial sweep and improve the ultimate recovery, provided a prop
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Morkun, Volodymyr S., Сергій Олексійович Семеріков, Svitlana M. Hryshchenko, and Kateryna I. Slovak. System of competencies for mining engineers. Видавництво “CSITA”, 2016. http://dx.doi.org/10.31812/0564/719.

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Topicality of the material, highlighted in this article is stipulated by the need to ensure effectiveness of educational process while preparing mining engineers. System of competencies for future mining engineers, taken as basis for high school sectoral standard for Mining 6.050301 update is theoretically substantiated and developed. Sources of state-of-the-art foreign educational system and technologies as well as scientific research results of local teachers have been analyzed, enabling development of new sectoral standard. Switching to new high school competencies-based sectoral standards
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