168 resources related to Structural shells
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ECTC is the premier international conference sponsored by the IEEE Components, Packaging and Manufacturing Society. ECTC paper comprise a wide spectrum of topics, including 3D packaging, electronic components, materials, assembly, interconnections, device and system packaging, optoelectronics, reliability, and simulation.
IEEE International Conference on Plasma Science (ICOPS) is an annual conference coordinated by the Plasma Science and Application Committee (PSAC) of the IEEE Nuclear & Plasma Sciences Society.
fusion engineering, physics and materials, plasma heating, vacuum technology, tritium processing, fueling, first walls, blankets and divertors
The conference covers all aspects of the technology associated with ultrasound generation and detection and their applications.
Covers all electronic materials and devices fields that involve nanotechnology
IEEE Antennas and Wireless Propagation Letters (AWP Letters) will be devoted to the rapid electronic publication of short manuscripts in the technical areas of Antennas and Wireless Propagation.
Contains articles on the applications and other relevant technology. Electronic applications include analog and digital circuits employing thin films and active devices such as Josephson junctions. Power applications include magnet design as well asmotors, generators, and power transmission
Broad coverage of concepts and methods of the physical and engineering sciences applied in biology and medicine, ranging from formalized mathematical theory through experimental science and technological development to practical clinical applications.
Specific topics of interest include, but are not limited to, sequence analysis, comparison and alignment methods; motif, gene and signal recognition; molecular evolution; phylogenetics and phylogenomics; determination or prediction of the structure of RNA and Protein in two and three dimensions; DNA twisting and folding; gene expression and gene regulatory networks; deduction of metabolic pathways; micro-array design and analysis; proteomics; ...
EMC standards; measurement technology; undesired sources; cable/grounding; filters/shielding; equipment EMC; systems EMC; antennas and propagation; spectrum utilization; electromagnetic pulses; lightning; radiation hazards; and Walsh functions
20th IEEE/NPSS Symposium onFusion Engineering, 2003., 2003
NCSX modular coil is a major parts of the NCSX coil systems that surround the highly shaped plasma and vacuum vessel. The flexible copper cable conductors are used to form modular coil on both sides of the 'tee' beam, which is cast inside the supporting shell structure. The engineering analyses comprise sequentially coupled-field analyses that include an electromagnetic analysis to ...
2009 International Conference on Mechatronics and Automation, 2009
The theoretical analysis of finite element method for buckling phenomenon to finite-sized shell structure is first introduced. Then, a real application using a probe for detecting the pressure inside turboprops is analyzed thoroughly with ANSYS10.0, including section profile, dimensions, and local characteristics. Based on the solved results, several rules between critical load and influence factors are obtained, which would be ...
1993 IEEE International Magnetics Conference (INTERMAG), 1993
2009 International Conference on Measuring Technology and Mechatronics Automation, 2009
Shear probe is a sensor which is used to measure ocean turbulence. Shell and inner structure of shear probe are critical. Shell structure affects liquid field, and inner structure affects sensitivity of shear probe. It is difficult to calculate the interaction between the shell and liquid field. Charge produced by piezoceramics of shear probe is complex to compute. In order ...
IEEE Transactions on Magnetics, 1986
A reusable plasma armature railgun barrel design is described. This barrel was designed and is being fabricated at the Los Alamos National Laboratory for use in a kinetic energy lethality test system. The performance goals for this barrel are (1) that it be able to withstand the loads generated when accelerating a 30-g projectile to a velocity of 15 km/s ...
Robotics History: Narratives and Networks Oral Histories:Hendrik Van Brussel
IEEE Magnetics Distinguished Lecture - Alison B. Flatau
Microfluidic devices for precision biological measurement: Stephen Quake
Microstructure-Property Correlations in Superconducting Wires - Applied Superconductivity Conference 2018
Planning in Robotics and Beyond - ICRA 2020
Constructing the Future of LA with Augmented Reality
EDOC 2010 - Dr. Benjamin Grosof Keynote
ISEC 2013 Special Gordon Donaldson Session: Remembering Gordon Donaldson - 3 of 7 - MEG and ULF-MRI
EMBC 2011 -Keynote (Women in Engineering Program) Re-engineering the War on Cancer: A Call to Action for Personalized Medicine -Mara G. Aspinall
NCSX modular coil is a major parts of the NCSX coil systems that surround the highly shaped plasma and vacuum vessel. The flexible copper cable conductors are used to form modular coil on both sides of the 'tee' beam, which is cast inside the supporting shell structure. The engineering analyses comprise sequentially coupled-field analyses that include an electromagnetic analysis to calculate the magnetic fields and EM forces, and a structural analysis to evaluate the structural responses. In the sequential EM-structural analysis, nodal forces obtained from the EM analysis were applied as "nodal force" loads in the subsequent stress analysis using the identical nodal points and elements. The shell model was imported directly from Pro/ENGINEER Tiles in order to obtain an accurate structural representation. The Boolean operations provided by the ANSYS preprocessor were then applied to subdivide the solid model for more desirable finite element meshing. Material properties of the modular coil were based on test results. Analyses using the ANSYS program to evaluate structural responses of the complicated modular coil systems provided a clear understanding of the structural behaviors and the directions for improving the structural design.
The theoretical analysis of finite element method for buckling phenomenon to finite-sized shell structure is first introduced. Then, a real application using a probe for detecting the pressure inside turboprops is analyzed thoroughly with ANSYS10.0, including section profile, dimensions, and local characteristics. Based on the solved results, several rules between critical load and influence factors are obtained, which would be helpful for similar structures design and application. Finally, several useful conclusions about the best profile and ratio between dimensions are obtained.
Shear probe is a sensor which is used to measure ocean turbulence. Shell and inner structure of shear probe are critical. Shell structure affects liquid field, and inner structure affects sensitivity of shear probe. It is difficult to calculate the interaction between the shell and liquid field. Charge produced by piezoceramics of shear probe is complex to compute. In order to resolve these problems, FLUENT is used to compute liquid field near the shear probe and optimize shell structure, and ANSYS is used to analyze the deformation and charge produced by inner structure. Experiment shows it is an effective way to optimize devise of shear probe.
A reusable plasma armature railgun barrel design is described. This barrel was designed and is being fabricated at the Los Alamos National Laboratory for use in a kinetic energy lethality test system. The performance goals for this barrel are (1) that it be able to withstand the loads generated when accelerating a 30-g projectile to a velocity of 15 km/s without sustaining permanent damage, (2) that it have multiple shot capability, and, (3) that it be capable of being repaired and/or modified. The barrel consists of a multipiece modular core contained in an outer structural shell. The core assembly, composed of rails and insulators, is accessible for repair or replacement. The outer structural shell is designed to allow access to the core and is used to preload the core compressively. The barrel design incorporates various features that will allow the use of stronger and stiffer materials such as structural ceramics and reinforced coppers as they become available.
The multistage and multi-shell median filters have been shown to be effective in preserving fine image structures as well as in the suppression of noise. It has been shown that the multi-shell median filter can be modified to describe a set of median based multi-shell order-statistics filters, each with a different noise removal characteristic. In the paper, an adaptive median based multi-shell order-statistics filter is presented. The adaptive algorithm varies the statistical properties of the filter by updating the rank of the complementary order-statistics operators of each shell according to the input noise density. Its performance is compared to the standard 2D median and multistage median filters with favourable results.<<ETX>>
In this study, we investigated the optical characteristics of single charge- tunable InAs QDs emitting at 1.2 μm, whose size is about twice those discussed in the previous reports. For probing electronic shell structures, large QDs are favorable in terms of deep confinement potentials and weak Coulomb interaction.
Nonlinear static FE analysis of bellows is carried with considering nonlinear of contact, geometry and material. These results show that the contact caused by high internal pressure can improve load bearing ability of structure, and this analysis method is useful to optimization design of bellows.
Vibrational deformations of cylindrical elastic shell structures are controlled by piezopolymer transducers; the sensors could act both as actuators and receptors. Theoretical models and experimental results are presented. The mechanical models show the control of modal structural deformations. The equilibrium equations are obtained from the Hamilton principle, using the Love Kirchhoff hypothesis. Cylindrical structures were studied in view of vibration induced protection of ship hulls against marine fouling.
This paper proposes control system for a new micro gravity experimental system called BOV (balloon-based operation vehicle). BOV uses a free-fall capsule with double- shell structure to prevent influence of aerodynamic disturbance. Additionally. BOV is raised to 40 km by a high altitude balloon to extend micro gravity duration to 30(or possibly 60) seconds. Thus we realize a medium duration micro gravity experimental system with good micro gravity environment. In this system, the most characteristic point is double-shell structure. The inner shell can fall freely since the outer shell is controlled not to collide with the inner shell. To realize this non-contact control, BOV's body is controlled by translationa] control and attitude control. For translational control, there are four laser displacement sensors in the middle of BOV to measure clearance between the inner shell and the outer shell. The center position of the inner shell is estimated by the Newton-Raphson method with four laser displacement sensors. Using this estimation, force commands are calculated with PD controller. Attitude control is also necessary to maintain stable micro gravity experiments. BOV has three fiber optical gyros to measure the body rates. Torque commands are also calculated with PD controller. The rolling angle is controlled by only D controller since the initial error angle is possible to exert a bad influence for that the balloon is rotated in the upper air. BOV is separated from the high altitude balloon after the balloon arrives at 40 km altitude. For 35 seconds the micro gravity experiment is carried out. After the experiment, the pilot-chute is opened for speed reduction. In addition, main- chute is opened at 7.5 km altitude for safety descent. In this paper, control system for the new micro gravity experimental system is proposed. This system has double shell structure and the inner shell can fall freely. In the experiment. we realize good-quality micro gravity and realize to continue moderate micro gravity duration. This system is now improving and near future we can utilize BOV's system for moderate micro gravity duration with low-cost easily.
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