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The ITherm Conference series is the leading international venue for scientific and engineering exploration ofthermal, thermomechanical, and emerging technology issues associated with electronic devices, packages, and systems.
variable structure control; vehicle systems control; sensor networks; big data analysis and compressed sampling; nonlinear systems control; nonlinear systems theory; complexity and complex system theory; industrial systems and manufacturing; transportation systems; robust control; fuzzy system and fuzzy control; neural networks; data driven modeling and control; stochastic systems; micro-nano and quantum systems; stability and stabilization; systems modeling and identification; motion control; signal processing and information fusion; intelligent robot; etc.
2016 Asia-Pacific Magnetic Recording Conference (APMRC)
The APMRC 2016 will be held at Seoul in Korea from 13 to 15 July, 2016. All members of the international scientific community interested in new developments in magnetic recording technologies are invited to attend. Among other things, the conference will address issues related to ultra-high density recording in multi-terabits per square inch (Tb/in^2) regime.
Bioinformatics, Computational Biology, Biomedical Engineering
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
Science and technology related to the basic physics and engineering of magnetism, magnetic materials, applied magnetics, magnetic devices, and magnetic data storage. The Transactions publishes scholarly articles of archival value as well as tutorial expositions and critical reviews of classical subjects and topics of current interest.
Devoted to the science and technology of neural networks, which disclose significant technical knowledge, exploratory developments, and applications of neural networks from biology to software to hardware. Emphasis is on artificial neural networks.
All aspects of the theory and applications of nuclear science and engineering, including instrumentation for the detection and measurement of ionizing radiation; particle accelerators and their controls; nuclear medicine and its application; effects of radiation on materials, components, and systems; reactor instrumentation and controls; and measurement of radiation in space.
IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control was the number-three journal in acoustics in 2002, according to the annual Journal Citation Report (2002 edition) published by the Institute for Scientific Information. This publication focuses on the theory, design, and application on generation, transmission, and detection of bulk and surface mechanical waves; fundamental studies in physical acoustics; design of sonic ...
IEEE Transactions on Magnetics, 1996
For a ball swaging process, an attempt has been made to get a closed-form solution for in-plane deformation. Inner and outer rings and arm have been approximated as thick cylinders subjected to uniform internal pressure. Based upon plastic deformations, residual stresses are calculated for perfect elasto-plastic materials and values of retention torques have been obtained. When treated as thin cylinders, ...
OCEANS 1984, 1984
An in-depth assessment was made of the potential microbial hazards to human health due to ocean disposal of sewage sludge in the New York Bight. Existing monitoring data, the occurrence of microbial pathogens and indicators in sewage sludges, and available literature suggest that microbial pathogens in sewage sludges present no human health threat when disposed at the 12-Mile Site in ...
IEEE Transactions on Applied Superconductivity, 2009
The effect of bending strain on the transport properties of Nb3Sn strands has been the object of several investigations in the last years. We report on the performances of internal tin Nb3Sn strands with different filament twist pitches, pre-compressed by swaging into thin stainless steel tubes before the reaction heat treatment and subject to pure bending strain. We have previously ...
IEEE Transactions on Magnetics, 1987
Powder metallurgy processed Nb3Al wires with low areal reduction ratios of R = 8×103to 1×104have been investigated on superconducting properties. We have done the optimization of high field Jcvalues for Nb-8 wt.%Al with different areal reduction ratios. Tcwas 17.1 K for the sample with a two stage heat treatment such as 1200 °C for 15 sec followed by 750 °C ...
Proceedings of the 17th Southern Biomedical Engineering Conference, 1998
For a ball swaging process, an attempt has been made to get a closed-form solution for in-plane deformation. Inner and outer rings and arm have been approximated as thick cylinders subjected to uniform internal pressure. Based upon plastic deformations, residual stresses are calculated for perfect elasto-plastic materials and values of retention torques have been obtained. When treated as thin cylinders, it is proved that for perfect elasto-plastic materials, the sufficient, but not necessary, simple inequality shown below, if satisfied, ensures that retention torque is positive: /spl sigma//sub y3//E/sub 3/>/spl sigma//sub y2//E/sub 2/>/spl sigma//sub y1//E/sub 1/ where /spl sigma//sub yi/ and E/sub i/ are yield stress and Young's Modulus of cylinder i. Cylinder 1 is the innermost cylinder. This has also been validated for thick cylinders, numerically; but not proven mathematically.
An in-depth assessment was made of the potential microbial hazards to human health due to ocean disposal of sewage sludge in the New York Bight. Existing monitoring data, the occurrence of microbial pathogens and indicators in sewage sludges, and available literature suggest that microbial pathogens in sewage sludges present no human health threat when disposed at the 12-Mile Site in the New York Bight. Recreational beaches are protected due to rapid initial and subsequent dilution of the sludges, sedimentation, and microbial die-off. Monitoring data show log decreases in microbial indicators from the 12-Mile Site to Long Island. After initial dilution of the discharged wastes, waters of the 12-Mile Site would meet New York and New Jersey standards for marine recreational waters. Shellfish contamination does not threaten human health due to the 6-nm-radius shellfish closure, the paucity of shellfish, and the expected processing of the only two shellfish species found in the vicinity of the site.
The effect of bending strain on the transport properties of Nb3Sn strands has been the object of several investigations in the last years. We report on the performances of internal tin Nb3Sn strands with different filament twist pitches, pre-compressed by swaging into thin stainless steel tubes before the reaction heat treatment and subject to pure bending strain. We have previously reported on the comparison between the performances of the technological OST- Dipole strand (TW-strand) with those of the same strand, but with untwisted superconducting filaments (UNTW-strand). The critical current, as well as the n-index of the samples with twisted filaments gradually degraded with the applied bending strain, while an enhancement of the performances has been observed on UNTW-strands. Here, results on further experimental measurements carried out on OKSC internal tin strands with different filament twist pitches are discussed, in order to clarify some aspects of the current transfer process within the strands. Finally, we carried out an analysis through the second derivative of the V-I curve, which evidenced a peaked critical current distribution for the UNTW-strands, while TW-strands under bending showed a higher degree of non-homogeneity, proven by broader distributions.
Powder metallurgy processed Nb3Al wires with low areal reduction ratios of R = 8×103to 1×104have been investigated on superconducting properties. We have done the optimization of high field Jcvalues for Nb-8 wt.%Al with different areal reduction ratios. Tcwas 17.1 K for the sample with a two stage heat treatment such as 1200 °C for 15 sec followed by 750 °C for 3 days in contrast to the low Tcvalues below 16 K for the samples with a single heat treatment at 800°C. Bc2for a two stage heat treated sample increased about 5 T at 4.2 K in comparison with a single heat treated sample. The measured Bc2values were well fitted to the theoretical curve of the upper critical field. The overall Jcvalues were measured up to 23 T at 4.2 K and Jc= 104A/cm2at 17.5 T was achieved.
The flow-induced vibration of a head gimbal assembly (HGA), known as windage, is an obstacle to achieving higher track densities in hard disk drives (HDDs). We examine the characteristics of windage in this paper with the goal of enabling the development of smaller-windage HGAs. We used a 14.5-mm-length (from swage hole center to dimple) HGA in our study. The windage was measured by a laser Doppler vibrometer in a spin stand under various conditions, such as different slider radius locations (inner diameter, medium diameter, and outer diameter), disk-rotational speeds, Z heights (distance from arm to disk), and temperatures. With respect to the slider radius location, windage was much greater when the slider was on the outer diameter rather than at other positions. When the slider was positioned at a fixed location, the windage was proportional to the square of the disk rotational speed. At high temperatures, the resonant frequencies decreased and their amplitudes increased. For some resonance modes, there was an optimal Z height. These findings will be useful for evaluating HGAs and optimizing HGAs through experimental design.
The characteristics of highway service district sewage were investigated. High oil and grease contents were detected. A novel high efficiency oil isolation/coalesce apparatus(NOICA) was used to treat this type of sewage. Different coalesec materials and operational conditions were examined. Quartz sand was preferred to cinder and coal dust. Hydraulic loading was found to be the variable that affected the oil removal efficiency significantly. The optimum hydraulic loading should not higher than 21m<sup>3</sup>/m<sup>2</sup>.h, depending on swage characteristics. The removal efficiency of oil and grease exceeded 70% for most sewage tested. The experimental results also show that the temperature and pH also can affect the oil removal efficiency, and the optimum temperature and pH were 30degC,and 5.00-7.00 respectively.
Within the framework of the European Fusion Programme a FSJS has been designed and manufactured by European Industry using PF coil NbTi superconductor manufactured and supplied by the Russian Federation as part of the R&D for the PF Conductor Insert (PFCI) coil. In addition to the superconductor, this sample contains a number of unique features. In contrast to other samples previously manufactured in Europe, the FSJS has used the Central Solenoid Model Coil (CSMC) joint design with NbTi conductor and a thick square jacket. One leg of the FSJS has had the conductor and sub-petal steel wraps removed before jacketing to assess the difference in the conductor performances between the two configurations. This paper will report on the development and manufacture of the FSJS, in particular the use of the Central Solenoid jacketing and swaging tools for compaction of the conductor and swaging of the joints, the preparation and qualification of the manufacturing route for the joint, the jacketing of a special length without conductor wraps and the high level of instrumentation required for the testing of the joint. The sample has been instrumented with more sensors than any other previous European sample, including temperature sensors, a large number of voltage taps for quench detection and Tcs measurements, quadrupoles to detect uneven voltage distribution, hall arrays for current distribution measurements and saddle coils.
High critical field and high critical current Nb3(Sn-In) multifilamentary wires were fabricated using an improved Sn base alloy. Nb rods with one or nineteen holes were impregnated with a ductile Sn-Cu-In alloy and reduced to final size wire by swaging and cold drawing without intermediate annealing. Addition of In and Cu to the Sn substantially improved the high field critical current and upper critical field. At 4.2 K, the nineteen core wire reacted at 900°C for 9 hours has an overall critical current density of 104A/cm2at 18 T and an extrapolated upper critical field of 25.5 T.
Superconducting Nb/sub 3/Sn wire was produced by a powder metallurgy method using Nb or Nb-2.9 at.% Ti powder in combination with Sn-x at.% Ga powders (x=3, 4.2, 6.2, and 9.0). Ga additions to the Sn caused considerable solid solution hardening, which improved its workability. It made the Nb-Sn(Ga) powder combination convenient for swaging and extensive wire drawing. Anneals at 950 degrees C produced wires with an overall J/sub c/ of 10/sup 4/ A/cm/sup 2/ at 21.9 T for wires with both Ti in the Nb and 6.2 at.% Ga in the Sn. Comparison of this wire with best Nb(Ti)-Cu-internal Sn(Ti) shows a higher J/sub c/ per A15 area, especially in fields of 22 T and above.
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