Academic literature on the topic 'Magnetic loading'

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Journal articles on the topic "Magnetic loading"

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Kida, Katsuyuki, Megumi Uryu, Takashi Honda, Teruaki Shimoji, Edson Costa Santos, and Kenichi Saruwatari. "Changes in Magnetic Fields in Tool Steel (SKS93, JIS) under Single Tensile Load." Applied Mechanics and Materials 307 (February 2013): 144–48. http://dx.doi.org/10.4028/www.scientific.net/amm.307.144.

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Fatigue failure of machine components is caused by cyclic load. Non-destructive observation methods that can be related to stress are necessary to study the fatigue phenomena. In the present work, a three-dimensional scanning Hall probe microscope (SHPM) equipped with GaAs film sensors was used to observe the fundamental features of the magnetic fields in a tool steel specimen (SKS93, JIS B 4404: 2006, equivalent to AISI W4 tool steel) during tensile loading. The nature of the magnetic fields during tensile loadings of 430μstrain and 640μstrain was observed using the SHPM. It was found that the magnetic fields decrease due to the tensile loading.
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Zakaria, S., B. H. Ong, and T. G. M. van de Ven. "Lumen loading magnetic paper I: flocculation." Colloids and Surfaces A: Physicochemical and Engineering Aspects 251, no. 1-3 (December 2004): 1–4. http://dx.doi.org/10.1016/j.colsurfa.2004.06.020.

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Greiner, A., J. Sebastian, P. Rehme, A. Aghajani-Talesh, A. Griesmaier, and T. Pfau. "Loading chromium atoms in a magnetic guide." Journal of Physics B: Atomic, Molecular and Optical Physics 40, no. 5 (February 19, 2007): F77—F84. http://dx.doi.org/10.1088/0953-4075/40/5/f01.

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Woramongconchai, Somsak, Chatchawan Lohitvisat, and Aree Wichainchai. "Effects of Magnetic Powder Loading on Mechanical Properties and Magnetic Properties of Natural Rubber." Advances in Science and Technology 45 (October 2006): 1423–28. http://dx.doi.org/10.4028/www.scientific.net/ast.45.1423.

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The effect of magnetic powders and powders loading on magnetic properties and mechanical properties of magnetic rubbers were studied. The natural rubber with magnetic powders, Barium ferrite, Neodymium iron boron, were used as starting materials to prepare magnetic rubbers. Barium ferrite (BaO.6F2O3) powders had been sintered at 1285 oC for 30 hours to improve its crystal structure. The physical properties of magnetic rubbers, residual flux density (Br), coercive force (Hc), maximum energy product (BHmax), hardness and density, had a trend to increase as enhancing magnetic powders loading. However, some properties such as, intrinsic coercive force (Hci), tensile strength and elongation at break, had a trend to decrease when the magnetic powder loading was increased. Magnetic properties of the anisotropic type, sintered powders, were higher than isotropic type, non-sintered powders, except the Hci because anisotropic magnetic rubber indicated crystal orientation in the same direction.
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Mazlan, Saiful Amri, Ahmed Issa, and Abdul Ghani Olabi. "Magnetorheological Fluids Behaviour in Tension Loading Mode." Advanced Materials Research 47-50 (June 2008): 242–45. http://dx.doi.org/10.4028/www.scientific.net/amr.47-50.242.

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In this paper, the behaviours of three types of MR fluids under quasi-static loadings in tension mode were investigated. One type of water-based and two types of hydrocarbon-based MR fluids were activated by a magnetic field generated by a coil using a constant value of DC electrical current. Experimental results in terms of stress-strain relationships showed that the MR fluids had distinct unique behaviours during the tension process. A high ratio of solid particles to carrier liquid in the MR fluid is an indication of high magnetic properties. The water-based MR fluid had a relatively large solid-to-liquid ratio. At a given applied current, a significant increase in tensile stress was obtained in this fluid type. On the other hand, the hydrocarbon-based MR fluids had relatively lower solid to liquid ratios, whereby, less increases in tensile stress were obtained. The behaviours of MR fluids were dependent on the relative movement between the solid magnetic particles and the carrier fluid. A complication occurs because, in the presence of a magnetic field, there will be a tendency of the carrier fluid to stick with the magnetic particle
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Shen, Gongtian, Bin Hu, Guangxin Gao, and Yuntao Li. "Investigation on metal magnetic memory signal during loading." International Journal of Applied Electromagnetics and Mechanics 33, no. 3-4 (October 8, 2010): 1329–34. http://dx.doi.org/10.3233/jae-2010-1257.

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Svetlana, Atroshenko, Morozov Viktor, Gribanov Denis, Lukin Anton, and Petrov Yuriy. "Behavior of metals Induced by magnetic pulse loading." EPJ Web of Conferences 94 (2015): 02014. http://dx.doi.org/10.1051/epjconf/20159402014.

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Zakaria, S., B. H. Ong, and T. G. M. van de Ven. "Lumen loading magnetic paper II: mechanism and kinetics." Colloids and Surfaces A: Physicochemical and Engineering Aspects 251, no. 1-3 (December 2004): 31–36. http://dx.doi.org/10.1016/j.colsurfa.2004.06.029.

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Liu, Jing Liang, Shou Kun Wang, and Jun Zheng Wang. "The Experimental Research of Magnetic Powder Brake Loading Characteristic in Rotary System." Applied Mechanics and Materials 130-134 (October 2011): 3237–41. http://dx.doi.org/10.4028/www.scientific.net/amm.130-134.3237.

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In order to obtain the loading characteristics of magnetic particle brake (MPB) in rotary system, the servo-motor controlling and testing experimental platform is used to research MPB loading characteristics. The key step is designing different experiments that include static loading experiment, step loading experiment, and tracking loading experiment. Based on the static experiment data, the MPB static property presents hysteresis which is described appropriately in the way of piecewise fitting. The response time in step experiment is longer in upward section than in downward section and it has no relation with the speed of MPB by lucubrating step experiment data. Phase difference is relevant to input current excitation frequency after analyzing tracking experiment data. The loading characteristic of MPB is closely relation to the MPB velocity which is proposed in rotary loading system. When the input current doesn’t change, the output torque increases along with the rotary speed increasing. Also, this paper provides reference materials for improving the loading precision, mathematics modeling, and hysteresis compensation.
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Qiao, Ning, Mu Xiao Shan, and Ye Zheng Li. "Metal Magnetic Memory Testing of Welded Joints under Fatigue Load." Materials Science Forum 898 (June 2017): 1069–78. http://dx.doi.org/10.4028/www.scientific.net/msf.898.1069.

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To investigate the influence of stress concentration, crack propagation and types of fatigue loading on metal magnetic memory signals, two groups of fatigue experiments with different types of fatigue loading were carried out on Q235B steel welded joint. The normal components of magnetic flux leakage were measured by metal magnetic memory tester in the course of fatigue test, and the fracture surfaces of specimens were observed by scanning electron microscopy after fatigue tests. The experimental results showed that the normal components of magnetic flux leakage filed, as well as the metal magnetic memory signal, changed polarity and their gradients have peak values at stress concentration zones. The zero position of the normal component of magnetic flux leakage changed gradually with increasing cycle numbers. In addition, the metal magnetic memory signal feature of fatigue crack propagation was affected by the loading type clearly. Moreover, a combination of brittle rupture and ductile rupture was obtained in the fracture morphology figure.
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Dissertations / Theses on the topic "Magnetic loading"

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Lu, Hsin-I. "Magnetic trapping of molecules via optical loading and magnetic slowing." Thesis, Harvard University, 2013. http://dissertations.umi.com/gsas.harvard:11250.

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Pärnaste, Martin. "The Influence of Interlayer Exchange Coupling on Magnetic Ordering in Fe-based Heterostructures." Doctoral thesis, Uppsala universitet, Fysik III, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-7885.

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Temperature dependent magnetization measurements were conducted on Fe-based heterostructures. A linear increase of the magnetic critical temperature with increasing Fe thickness was found for Fe/V superlattices with strong interlayer exchange coupling. For weakly coupled Fe/V superlattices anomalous values of the critical exponent β were attributed to differences in the effective interlayer exchange coupling in the surface region and in the interior of the superlattice stack. Hydrogen loading of a sample containing a thin Fe film, up to a maximum pressure of 4 mbar gave an increase of the magnetic critical temperature of ≈21 K. A sample with a double layer of Fe, exchange coupled over V, showed oscillations in the critical temperature when loaded to increasing pressure of hydrogen. The oscillations in the critical temperature indicate the presence of quasi-2D phases. Superlattices of Fe and V were investigated by x-ray magnetic circular dichroism. It was found that the orbital magnetic moment shows the same trend as the magnetic anisotropy energy with thickness of the Fe layers. A model which takes into account a varying strain and interface density successfully described the changes in the orbital magnetic moment. The magnetization was measured as a function of temperature for a series of magnetically δ-doped Pd samples. A thin film of Fe induced a magnetic moment in surrounding Pd layers, leading to a magnetic thickness one order of magnitude larger than the thickness of the Fe film. A crossover in the magnetic spatial dimensionality was found as the thickness of the Fe film increased from ≈0.4 monolayers to ≈1 monolayer. First principle calculations of the magnetization profile together with a spin wave quantum well model were used to explain the dimensionality crossover by an increase in the available thermal energy for population of perpendicular spin wave modes.
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Braddish, Tess Aspen. "Reliability of Inter- and Intra-Examiner Loading of the Knee Joint During Simulated MRI." ScholarWorks @ UVM, 2019. https://scholarworks.uvm.edu/graddis/1050.

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It has been suggested that simulating physiological loading of the knee during magnetic resonance imaging (MRI) is a promising technique for assessing soft and hard tissues in the knee joint. We have developed a novel MRI-compatible lower limb loading and positioning device to assess knee biomechanics in a physiologically relevant environment using MRI. The objectives of this study were (1) to evaluate inter- and intra-examiner reliability for using our custom-built loading system to maintain a desired load magnitude and direction during each loading trial and over repeated subject visits and (2) to determine the effect of the applied load on motion of the subject's knee over the duration of a loading trial. The pneumatic-controlled loading system was tested on ten subjects at a compression load of 50% of the subject's bodyweight. Two examiners separately positioned and loaded each subject for three loading trials per visit, repeated for three visits. The primary outcome measure was the magnitude of the primary axial load (proximal/distal force) applied to the subject's foot over a loading trial. Secondary outcome measures included average magnitude of medial/lateral and anterior/posterior forces as well as valgus/varus, flexion/extension, and external/internal moments applied to the subject's foot during a loading trial. Location of center of loading at the foot was also recorded. Primary axial load was found to be maintained to within 44-47% of subject bodyweight. Following load-application, the subject's knee exhibited movement throughout the duration of each loading trial. We found that 61.0% of proximal/distal knee displacement occurred within the first 2 minutes following loading. Between minutes 4 and 12, knee positioning was maintained to within 0.92 mm in the medial/lateral direction and 1.24 mm in the proximal/distal direction. We conclude that our loading device can apply controllable and reproducible loading over repeated trials as well as limit subject motion throughout each trial.
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Wellen, Jeremy W. "Characterization of soft-tissue response to mechanical loading using nuclear magnetic resonance (NMR) and functional magnetic resonance imaging (fMRI) of neuronal activity during sustained cognitive-stimulus paradigms." Link to electronic thesis, 2003. http://www.wpi.edu/Pubs/ETD/Available/etd-0430103-140128.

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McKinnon, Douglas John Electrical Engineering &amp Telecommunications Faculty of Engineering UNSW. "Novel efficiency evaluation methods and analysis for three-phase induction machines." Awarded by:University of New South Wales. Electrical Engineering and Telecommunications, 2005. http://handle.unsw.edu.au/1959.4/21869.

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This thesis describes new methods of evaluating the efficiency of three-phase induction machines using synthetic loading. Synthetic loading causes the induction machine to draw full-load current without the need to connect a mechanical load to the machine's drive shaft. The synthetic loading methods cause the machine to periodically accelerate and decelerate, producing an alternating motor-generator action. This action causes the machine, on average over each synthetic loading cycle, to operate at rated rms current, rated rms voltage and full-load speed, thereby producing rated copper losses, iron loss and friction and windage loss. The excitation voltages are supplied from a PWM inverter with a large capacity DC bus capable of supplying rated rms voltage. The synthetic loading methods of efficiency evaluation are verified in terms of the individual losses in the machine by using a new dynamic model that accounts for iron loss and all parameter variations. The losses are compared with the steady-state loss distribution determined using very accurate induction machine parameters. The parameters were identified using a run-up-to-speed test at rated voltage and the locked rotor and synchronous speed tests conducted with a variable voltage supply. The latter tests were used to synthesise the variations in stator leakage reactance, magnetising reactance and the equivalent iron loss resistance over the induction machine's speed range. The run-up-to-speed test was used to determine the rotor resistance and leakage reactance variations over the same speed range. The test method results showed for the first time that the rotor leakage reactance varied in the same manner as the stator leakage and magnetising reactances with respect to current. When all parameter variations are taken into account there is good agreement between theoretical and measured results for the synthetic loading methods. The synthetic loading methods are applied to three-phase induction machines with both single- and double-cage rotors to assess the effect of rotor parameter variations in the method. Various excitation waveforms for each method were used and the measured and modelled efficiencies compared to conventional efficiency test results. The results verify that it is possible to accurately evaluate the efficiency of three-phase induction machines using synthetic loading.
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Majdič, Petr. "Napěťová, deformační a bezpečnostní analýza statoru generátoru zatíženého nehomogenní teplotou." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2015. http://www.nusl.cz/ntk/nusl-231962.

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This thesis deals with stress, strain and reliability analysis of synchronous generator stator including an inhomogeneous temperature field. Using the finite element method, stress and strain are calculated, and from these values safety against yield strength is determined, which is followed by the life calculation of the most stressed weld joint and the determination of its possible damage during the period required by the customer.
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Halfar, Tomáš. "Zlepšení energetických parametrů asynchronních strojů malého výkonu." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2013. http://www.nusl.cz/ntk/nusl-219929.

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The master’s thesis Improvement power parameter of small induction motors deals with issues of lowering the losses of small induction motors. The first part introduces with design and principles of operation of induction motors. Also introduces to theoretical problematic of losses, their lowering and measuring. In the practical part there are results of the measuring the losses in the induction motor ATAS Elektromotory Náchod a.s. T22VT512 (71-0512). There are proposed methods of increasing the efficiency of induction motor due to measuring and their verification in the Maxwell software. The last part is dedicated to measuring the losses of prototype motor from ATAS and comparison of results with previous motor.
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Hung, Chian-Huei, and 洪千惠. "Application of Loading Phantom for Magnetic ResonanceImaging in Polymer Gel Dosimetry." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/38802808668722513115.

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碩士
中臺科技大學
放射科學研究所
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The sensitivity of polymer gel dosimeter is high in radiation detection, which will be polymerized or cross-linked under the radiation exposure. Magnetic Resonance Imaging (MRI) was recognized as the most potential device in measuring the radiation dosage by gel dosimeters. However, the image quality of MRI is highly affected by the materials of the loading phantom, which can carry the test tubes in position during MRI testing. Therefore, in this study, the disc-shaped prosthesis, whole solid phantom and Gd jelly phantom were compared in the dose-response curve, image nonuniformity and SNR in the standard imaging quality. The results demonstrated that the Gd jelly phantom and the whole solid phantom display higher imaging quality nonuniformity (1.60%~1.84 %) and higher SNR (391~513), respectively. In addition, the dose scale method (scale=0.2, 0.5 and 1Gy) was utilized to study the dose discrimination of MRI. The discrimination in the dose range of 0~1.6 Gy and 12~16 Gy were 0.2 Gy and 0.5 Gy, respectively. The results showed that the loading phantom could easily promote the MRI imaging quality of the Polymer gel dosimeter.
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Zhu, Ruixian. "The Effect of Crystallographic Orientation and Thermo-mechanical Loading Conditions on the Phase Transformation Characteristics of Ferromagnetic Shape Memory Alloys." 2009. http://hdl.handle.net/1969.1/ETD-TAMU-2009-12-7505.

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The effects of crystallographic orientation, temperature and heat treatment on superelastic response of Ni45Mn36.5Co5In13.5 single crystals were investigated. Superelastic experiments with and without various magnetic field were conducted under compression on a custom built magneto-thermo-mechanical test setup. Magnetostress, which is the difference in critical stress levels for the martensitic transformation with and without magnetic field, was determined as a function of crystallographic orientation, heat treatment and temperature parameters. Magnetostress of [111] crystals was observed to be much higher than that of [001] crystals with same heat treatment. Water quenched samples have the highest magnetostress among other samples with the same orientation that were oil quenched and furnace cooled. Crystal structure and atomic ordering of the samples were examined using Synchrotron High-Energy X-Ray Diffraction to rationalize observed differences. Magnetostress levels were also traced at various temperatures. A Quantum Design superconducting quantum interference device (SQUID) was utilized to examine the magnetic properties of the material. The difference in saturation magnetization at various temperatures was analyzed to explain the temperature effect on magnetostress. Calculations based on the energy conversion from available magnetic energy to mechanical work output were used to predict the magnetic field dependence of magnetostress, which provides a guideline in material selection for the reversible magnetic field induced martensitic phase transformation. Isothermal superelastic response and load-biased shape memory response of Co48Ni33Al29 single crystals were determined as a function of temperature and stress, respectively. The aim of the work is to provide a new direction to understand the anomaly of transformation strain and hysteresis for ferromagnetic shape memory alloys. Thermo-mechanical behavior of Co48Ni33Al29 single crystal was determined by a custom built thermo-mechanical compression setup based on an electromechanical test frame made by MTS. Transformation strain was observed to decrease with increasing applied stress in isothermal tests or increasing temperature in superelastic experiments. The variation in the lattice constant in martensite and austenite was verified to account for such a trend. It was also discovered that both thermal and stress hysteresis decreased with increasing applied stress and temperature, respectively. Multiple factors may be responsible for the phenomenon, including the increase of dislocation, the compatibility between martensite and austenite phase.
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Hayes, Paul Michael. "Use of a Press-Fit Grip Sleeve for Cable-In-Conduit Superconductor Integration: Effects of Tensile and Fatigue Loading." 2010. http://trace.tennessee.edu/utk_gradthes/806.

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Presently, one of the most promising sources for a future of abundant, low-emission, and efficient energy comes in the form of nuclear fusion. However, in order for it to become a reality, fusion technology must overcome the obstacle of plasma confinement. Utilizing the tokomak based design for magnetic plasma confinement; ITER is currently developing a fusion reactor to prove its commercial viability. The purpose of this research was to determine the feasibility of pulling toroidal field cable with a press-fit grip sleeve that utilizes friction to generate a gripping force. Such a design is being considered by ITER to integrate (join) 800 m long sections of superconducting cable and conduit for use in toroidal field plasma confinement coil construction. In order to see if friction alone had the potential to withstand the required pulling load, eight grip sleeve samples were subjected to monotonic tensile loading until failure (sleeve slippage) occurred. It was also important that the grip could withstand the variable loading that will likely occur during the pulling process due to friction between the cable and conduit. Therefore, a period of cyclic loading, prior to tensile loading, was incorporated into the testing regimen. Based on the results of each experiment, additional modifications were made until the sleeve’s gripping strength exceeded that of the weld joint used in the design, meaning the physical limitations of the grip sleeve had been reached. Once the design was optimized, additional samples were tested under identical conditions to establish repeatability. In addition, Finite Element Analysis was used to obtain better insight into the deformation behavior of the cable. Based on the findings of this research, it was determined that a 300 mm long press-fit sleeve with a 25.4mm long reinforcement grip ring is capable of supporting a 116 kN (26,000 lbf) to 126.5 kN (28,500 lbf) tensile load, with little to no adverse effects from fatigue testing. Since this value exceeds the 8,000 lbf load used by a Japanese team to perform this same task, it can be concluded that the press-fit grip design is capable of performing the required cable pull with a generous safety factor.
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Books on the topic "Magnetic loading"

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Lombardi, Massimo, and Antonia Camporeale. Cardiovascular magnetic resonance in less common pathologies. Edited by Dudley Pennell. Oxford University Press, 2018. http://dx.doi.org/10.1093/med/9780198784906.003.0111.

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Contrast-enhanced cardiovascular magnetic resonance plays a pivotal role in diagnostic and prognostic definition of less common pathologies such as Anderson–Fabry disease, cardiac amyloidosis, left ventricular non-compaction, sarcoidosis, and cardiac iron loading.
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S, Steinolfson R., and United States. National Aeronautics and Space Administration., eds. Numerical simulations of mass loading in the solar wind interaction with Venus. [Washington, DC: National Aeronautics and Space Administration, 1996.

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Book chapters on the topic "Magnetic loading"

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Kondo, K. "Magnetic Response of Powders to Shock Loading and Fabrication of Nanocrystalline Magnets." In High-Pressure Shock Compression of Solids IV, 309–30. New York, NY: Springer New York, 1997. http://dx.doi.org/10.1007/978-1-4612-2292-7_12.

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Woramongconchai, Somsak, Chatchawan Lohitvisat, and Aree Wichainchai. "Effects of Magnetic Powder Loading on Mechanical Properties and Magnetic Properties of Natural Rubber." In Advances in Science and Technology, 1423–28. Stafa: Trans Tech Publications Ltd., 2006. http://dx.doi.org/10.4028/3-908158-01-x.1423.

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Gorkunov, E. S., R. A. Savrai, and A. V. Makarov. "Magnetic Techniques for Estimating Elastic and Plastic Strains in Steels Under Cyclic Loading." In Mechanics and Model-Based Control of Advanced Engineering Systems, 137–44. Vienna: Springer Vienna, 2013. http://dx.doi.org/10.1007/978-3-7091-1571-8_15.

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Kawamata, Shuichi, Kiichi Okuda, Masae Kikuchi, Hideaki Hikosaka, and Yasuhiko Syono. "Magnetic Torque of Oriented Bulk Bi-Sr-Ca-Cu-O by Shock-Loading Method." In Advances in Superconductivity VIII, 603–6. Tokyo: Springer Japan, 1996. http://dx.doi.org/10.1007/978-4-431-66871-8_133.

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Korznikova, G. F., A. V. Korneva, and A. V. Korznikov. "Formation of Submicrocrystalline Structure in the Hard Magnetic Alloy Fe-15wt.%Co-25%Cr during Straining by Complex Loading." In Nanomaterials by Severe Plastic Deformation, 177–82. Weinheim, FRG: Wiley-VCH Verlag GmbH & Co. KGaA, 2005. http://dx.doi.org/10.1002/3527602461.ch3k.

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Kohli, Saurabh, S. B. Mahajan, Padmanaban Sanjeevikumar, Viliam Fedák, and Valentin Oleschuk. "Impact of DC Bias on the Magnetic Loading of Three Phase Three Limb Transformer Based on Finite Element Method." In Advances in Power Systems and Energy Management, 97–106. Singapore: Springer Singapore, 2017. http://dx.doi.org/10.1007/978-981-10-4394-9_10.

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Kohli, Saurabh, S. B. Mahajan, S. M. Badave, Padmanaban Sanjeevikumar, and Atif Iqbal. "Finite Element Method Based Determination of Magnetic Loading of Three-Phase Five-Limb Transformer with Impact of DC Offset." In Advances in Power Systems and Energy Management, 241–49. Singapore: Springer Singapore, 2017. http://dx.doi.org/10.1007/978-981-10-4394-9_25.

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Qin, Qing-Hua. "Green’s Functions of Magneto-Electro-Elastic Plate Under Thermal Loading." In Encyclopedia of Thermal Stresses, 2096–103. Dordrecht: Springer Netherlands, 2014. http://dx.doi.org/10.1007/978-94-007-2739-7_96.

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Fathi Kazerooni, A., M. Rabbani, and M. R. Yazdchi. "Simulation of the Effects of Electric and Magnetic Loadings on Internal Bone Remodeling." In IFMBE Proceedings, 458–62. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-21729-6_116.

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Kttamura, M., L. Solomon, G. Decker, and J. Galayda. "Determination of Loading Order of Permanent Magnet Blocks in the Soft X-ray Undulator (SXU) at the NSLS." In 11th International Conference on Magnet Technology (MT-11), 343–47. Dordrecht: Springer Netherlands, 1990. http://dx.doi.org/10.1007/978-94-009-0769-0_59.

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Conference papers on the topic "Magnetic loading"

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Krevet, B., M. Kohl, and V. Pinneker. "FEM Simulation of a Magnetic Shape Memory Foil Actuator Under Different Loading Conditions." In ASME 2011 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. ASMEDC, 2011. http://dx.doi.org/10.1115/smasis2011-5052.

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This paper presents a finite element model and simulation results on the performance of a novel linear actuator using the magnetic shape memory (MSM) effect in a Ni-Mn-Ga foil loaded by a mechanical spring. We present finite element simulations with a material model based on the thermodynamic Gibbs free energy in a finite element program (FEM) using beam elements, which is combined with an integral magnetic solver. The simulations qualitatively describe the observed tensile stress-dependence of magneto strain of a first demonstrator of a MSM foil actuator. We demonstrate that complete reversible cycles of the magnetic field induced strain are possible if the spring is preloaded to induce a prestress in the foil. The effect of inhomogeneous material on variant reorientation and corresponding magneto strain are discussed.
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"Magnetic Pre-Loading for a Tonpilz-Type Acoustic Projector." In Structural Health Monitoring. Materials Research Forum LLC, 2021. http://dx.doi.org/10.21741/9781644901311-1.

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Abstract. This paper describes a new magnet-based method for applying a compressive pre-load to the piezoceramic elements of a Tonpilz-type acoustic projector, with the advantage of lower damping due to mechanical friction and a greater range of unhampered resonant motion since no plate spring is required. The Tonpilz-type acoustic projector can be applied to structural health monitoring studies involving air coupled ultrasound. Acoustic model predictions and the measured behaviour of a relaxor ferroelectric single crystal (RFSC) based prototype device, operating in air, are presented and show good correlation. With a 5 V drive, at 9420 Hz resonance, the prototype device generates a sound pressure level of 113 dB measured at an axial distance of 5 mm. The maximum peak tip displacement of the device’s head mass is predicted to be 0.7 µm at resonance. This is well within the 2 µm displacement produced by the 90 N magnetic pre-load, thus protecting the RFSC ceramic element from damaging tensile stress.
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Doyle, John M. "Buffer-gas Loading and Magnetic Trapping of Molecules." In Proceedings of the XVIII International Conference on Atomic Physics. WORLD SCIENTIFIC, 2003. http://dx.doi.org/10.1142/9789812705099_0020.

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Akbarzadeh, A. H., and Z. T. Chen. "Radially Polarized and Magnetized Rotating Cylinders Under Thermal Loading." In ASME 2012 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/pvp2012-78427.

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Analytical solutions are acquired for radially polarized and magnetized rotating magnetoelectroelastic hollow and solid cylinders. The cylinders are orthotropic and infinitely long and are subjected to a combination of thermal, magnetic, electric, and mechanical loadings. The symmetric and steady state heat conduction equation is solved based on a general form of thermal boundary conditions to give the temperature distribution along the radial direction of cylinders. The governing ordinary differential equations in terms of displacement, electric potential, and magnetic potential with considering the thermal and inertial effects are obtained and solved in an exact form using the straightforward successive decoupling method. Numerical results are illustrated to reveal influences of thermal boundary condition, angular velocity, aspect ratio, and magneto-electro-mechanical boundary condition on the multiphysical responses of the rotating hollow and solid cylinders. The results are validated with those available in the literature.
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Park, Kyoung-Su. "Analysis of loading process of the slider with accumulated lubricant in HDD." In 2016 Asia-Pacific Magnetic Recording Conference (APMRC). IEEE, 2016. http://dx.doi.org/10.1109/apmrc.2016.7524282.

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Sarkhel, Abhishek, and Sekhar Ranjan Bhadra Chaudhuri. "Design of miniaturized PIFA with magnetic resonator metamaterial loading." In 2015 IEEE Applied Electromagnetics Conference (AEMC). IEEE, 2015. http://dx.doi.org/10.1109/aemc.2015.7509156.

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Kern, D. J., D. H. Werner, and P. L. Werner. "Optimization of multi-band AMC surfaces with magnetic loading." In IEEE Antennas and Propagation Society Symposium, 2004. IEEE, 2004. http://dx.doi.org/10.1109/aps.2004.1329797.

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Yang, G. M., A. Daigle, M. Liu, O. Obi, S. Stout, K. Naishadham, and N. X. Sun. "Planar circular loop antennas with self-biased magnetic film loading." In 2008 IEEE Antennas and Propagation Society International Symposium and USNC/URSI National Radio Science Meeting. IEEE, 2008. http://dx.doi.org/10.1109/aps.2008.4619327.

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Li, Tong, Xiangyu Cao, Qi Li, Jun Gao, and Huanhuan Yang. "Frequency reconfigurable bow-tie antenna with artificial magnetic conductor loading." In 2017 Sixth Asia-Pacific Conference on Antennas and Propagation (APCAP). IEEE, 2017. http://dx.doi.org/10.1109/apcap.2017.8420346.

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Mitropolskaya, S. "Magnetic characterization techniques for monitoring gas pipelines under severe loading." In ENERGY AND SUSTAINABILITY 2014. Southampton, UK: WIT Press, 2014. http://dx.doi.org/10.2495/esus140581.

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Reports on the topic "Magnetic loading"

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Thornell, Travis, Charles Weiss, Sarah Williams, Jennifer Jefcoat, Zackery McClelland, Todd Rushing, and Robert Moser. Magnetorheological composite materials (MRCMs) for instant and adaptable structural control. Engineer Research and Development Center (U.S.), November 2020. http://dx.doi.org/10.21079/11681/38721.

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Magnetic responsive materials can be used in a variety of applications. For structural applications, the ability to create tunable moduli from relatively soft materials with applied electromagnetic stimuli can be advantageous for light-weight protection. This study investigated magnetorheological composite materials involving carbonyl iron particles (CIP) embedded into two different systems. The first material system was a model cementitious system of CIP and kaolinite clay dispersed in mineral oil. The magnetorheological behaviors were investigated by using parallel plates with an attached magnetic accessory to evaluate deformations up to 1 T. The yield stress of these slurries was measured by using rotational and oscillatory experiments and was found to be controllable based on CIP loading and magnetic field strength with yield stresses ranging from 10 to 104 Pa. The second material system utilized a polystyrene-butadiene rubber solvent-cast films with CIP embedded. The flexible matrix can stiffen and become rigid when an external field is applied. For CIP loadings of 8% and 17% vol %, the storage modulus response for each loading stiffened by 22% and 74%, respectively.
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