Lagrangian subbundles of symplectic bundles over a curve [PDF]
arXiv, 2010 A symplectic bundle over an algebraic curve has a natural invariant $\sLag$ determined by the maximal degree of its Lagrangian subbundles. This can be viewed as a generalization of the classical Segre invariants of a vector bundle. We give a sharp upper bound on $\sLag$ which is analogous to the Hirschowitz bound on the classical Segre invariants ...
arxiv
Thermodynamic Analysis for Tracking the Effect of the Egyptian Zirconium Silicate on the slag properties of low hydrogen Welding Electrodes [PDF]
, 2020 Ahmed H. Abdel-Karim +3 more
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Split Special Lagrangian Geometry [PDF]
Progress in Math. 297 (2012), 42-90, 2010 One purpose of this article is to draw attention to the seminal work of J. Mealy in 1989 on calibrations in semi-riemannian geometry where split SLAG geometry was first introduced. The natural setting is provided by doing geometry with the complex numbers C replaced by the double numbers D, where i with i^2 = -1 is replaced by tau with tau^2 = 1.
arxiv
Optimization of a Welding Procedure for Making Critical Aluminum Welds on the LBNF Absorber Core Block [PDF]
JACoW IPAC2024 (2024) TUPS43The LBNF Absorber consists of thirteen 6061-T6 aluminum core blocks. The core blocks are water cooled with de-ionized (DI) water which becomes radioactive during beam operations. The cooling water flows through gun-drilled channels in the core blocks.
arxiv +1 more source
Special Lagrangian submanifolds and Algebraic complexity one Torus Actions [PDF]
arXiv, 2000 In the first part of this paper we consider compact algebraic manifolds M^2n with an algebraic (n-1)-Torus action. We show that there is a T-invariant meromorphic section $\sigma$ of the canonical bundle of M. Any such $\sigma$ defines a divisor D. On the complement M'=M-D we have a trivialization of the canonical bundle and a T-action.
arxiv
DIDO Hammerstein Identification of Mild Steel Welding Pool in Pulsed GTAW Dynamic Process with Wire Filler [PDF]
arXiv, 2018 This paper analyzed the nonlinearity of welding dynamic process, and then adopted MIMO Hammerstein model to describe approximately the process. An identification algorithm was developed and pseudo random signals were adopted as model input. Through a welding experiment, input-output data were obtained and the Hammerstein model of welding pool was ...
arxiv
The use of submerged-arc welding flux slag as raw material for the fabrication of multiple-use mortars and bricks [PDF]
, 2009 Caroline Espinosa Viana +3 more
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Effect of Post Weld Heat Treatments on the Elevated Temperature Mechanical Properties of Ti6Al4V Friction Welds [PDF]
arXiv, 2018 The {\alpha}+\b{eta} titanium alloy (Ti6Al4V) has been successfully joined using rotary friction welding. To investigate the influence of post weld heat treatments on the microstructure and mechanical properties of the welds, the weld joints were heat treated in {\alpha}+\b{eta} and \b{eta} regions, followed by air cooling and furnace cooling ...
arxiv
On the use of slag from silicomanganese production for welding flux manufacturing
IOP Conference Series: Materials Science and Engineering, 2016 The technologies for manufacturing of welding fluxes with the use of slag from silicomanganese production and dust of gas purification from aluminum production are developed. The new compositions and production technology of welding fluxes are offered. The comparative evaluation of the new compositions and widely used AN-348 flux is provided.
N. A. Kozyrev +3 more
openaire +2 more sources
Solidification Kinetics of an Oxide Weld Slag Utilizing SEM and LSCM Imaging [PDF]
, 2013 Michael Kottman +4 more
openalex +1 more source