Bloomington, IN, United States

Victor Technologies, LLC

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Bloomington, IN, United States

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Henderson J.,Victor Technologies, LLC
Welding Journal | Year: 2014

Bel-Aire Mechanical is a full-service mechanical, HVAC, and plumbing contractor. The company fabricates duct work, plumbing systems, and piping for municipal work, power plants, semiconductor manufacturers, and just about anyone else who needs pipe. Due to the climate in Phoenix, the company has the luxury of locating the entrance conveyor outside the building, opening a door as necessary for the operator to roll the length of pipe onto the conveyor. The weight of the pipe secures it in the turning rolls. The two main shafts are interconnected by precision gearboxes, which are driven by a variable-speed DC motor. In addition to planning facility layout, Prevett notes that companies need to evaluate how moving from manual to mechanized cutting will change logistics.


Pekker L.,Victor Technologies, LLC | Hussary N.,Victor Technologies, LLC
Physics of Plasmas | Year: 2015

In this paper, we propose new boundary conditions for the electric potential, the electron energy equation, and the energy equation for heavy particles (ions and neutrals) at the hot walls with thermionic electron emission for two-temperature thermal arc models. The derived boundary conditions assume that the walls are made from refractory metals and, consequently, the erosion of the wall is small and can be neglected. In these boundary conditions, the plasma sheath formed at the electrode is viewed as the interface between the plasma and the wall. The derived boundary conditions allow the calculation of the heat flux to the walls from the plasma. This allows the calculation of the thermionic electron current that makes the model of electrode-plasma interaction self-consistent. © 2015 AIP Publishing LLC.


Henderson J.,Victor Technologies, LLC
Welding Journal | Year: 2012

Manufacturers design and build safe equipment to minimize the risks associated with oxyfuel processes such as heating, cutting, brazing, and welding. Good oxyfuel operators are aware that their own safety, along with the safety of those around them, depends on proper and responsible use of oxyfuel equipment. The basis of all oxyfuel processes is the triangle of combustion or fire triangle and combustion requires three elements, such as fuel, oxygen, and heat. Operators need to must control each of these elements, leading to safety starting with a clean work area free from oily rags, paper, volatile liquids, trash cans, and other combustibles. Eye protection options included a face shield, goggles, or safety glasses with appropriate shade lens to deal with flames, sparks, and a small amount of infrared rays produced from oxyfuel processes.


Grant
Agency: Department of Defense | Branch: Air Force | Program: SBIR | Phase: Phase II | Award Amount: 749.93K | Year: 2013

ABSTRACT: Computational electromagnetics and inverse methods are the foundations of modern methods of eddy-current nondestructive evaluation (NDE). In this project, we apply these methods to the problem of characterizing, in three dimensions, damage in complex aircraft structures. As the maintenance of the structural components of aircraft moves from time-based maintenance to condition-based maintenance, there is a need to completely characterize damage in structural components made from such disparate materials as aluminum, titanium and steel alloys, and carbon-fiber reinforced polymers (cfrp), such as graphite-epoxy composites. Further, the structural environments can be quite complex, including compound curvatures and/or multiple layers that are fastened together, with potential damage being located in each of the multiple layers. The methods developed in this project will address all of these issues, and will be applicable to the nuclear power industry, as well as civil infrastructures and materials characterization. BENEFIT: The technology that we develop in this proposal will be applicable to the aerospace, nuclear power, materials characterization, and many other areas, so our research will have commercial benefits that extend far beyond military applications.


Grant
Agency: Department of Defense | Branch: Air Force | Program: SBIR | Phase: Phase II | Award Amount: 749.76K | Year: 2013

ABSTRACT: To achieve the objectives of condition-based maintenance plus prognosis (CBM+), and realize its potential, the location and size of damage at any length scale, e.g., either a crack or a microstructural perturbation, needs to be determined with statistical metrics to feed prognostic reasoners and risk assessments. Previous work by Victor Technologies has focused on developing estimation-theoretic metrics for model-based inversion algorithms in eddy-current NDE. During Phase II, we will build on the Phase I feasibility study to demonstrate and validate a general statistical theory of uncertainty propagation with appropriate metrics, and apply the results to more challenging three-dimensional problems, including those in which sizing and location of flaws are required, as well as materials characterization. Further, we will continue the development of high-dimensional model representation (HDMR) algorithms for application to statistical problems in NDE, which we first studied during Phase I. BENEFIT: The technology that we develop in this proposal will be applicable to the aerospace, nuclear power, materials characterization, civil infrastructure, and many other industries, so our research will have commercial benefits that extend far beyond military applications.


Grant
Agency: Department of Defense | Branch: Air Force | Program: SBIR | Phase: Phase I | Award Amount: 149.99K | Year: 2011

ABSTRACT: To achieve the objectives of condition-based maintenance plus prognosis (CBM+), and realize its potential, the location and size of damage at any length scale, e.g., either a crack or a microstructural perturbation, needs to be determined with statistical metrics to feed prognostic reasoners and risk assessments. Previous work by Victor Technologies has focused on developing estimation-theoretic metrics for model-based inversion algorithms in eddy-current NDE. In this research effort, we will develop and demonstrate a general statistical theory of uncertainty propagation with appropriate metrics, and apply the results to more challenging three-dimensional problems, including those in which sizing and location of flaws are required, as well as materials characterization. This will pave the way for a validation study using benchmark data during Phase II. BENEFIT: The technology that we develop in this proposal will be applicable to the aerospace, nuclear power, materials characterization and many other industries, so our research will have commercial benefits that extend far beyond military applications.


Trademark
Victor Technologies, LLC | Date: 2013-01-15

Computer software for modeling forward and inverse problems in eddy-current nondestructive evaluation (NDE) of materials and structures.


Grant
Agency: National Aeronautics and Space Administration | Branch: | Program: SBIR | Phase: Phase I | Award Amount: 124.89K | Year: 2016

The use of eddy-current methods to detect damage in aerospace structures,and to characterize materials is well established, and is a key item to ensure that the risk of structural failures meets the strict damage tolerance requirements established by NASA. This is especially challenging when one considers that common aerospace structures are made from such disparage materials as aluminum, titanium and steel alloys, as well as carbon-fiber reinforced polymers (cfrp) and carbon-nanotube reinforced polymers (cnrp) that are seeing increased applications at NASA. Further the structural environments can be quite complex, including compound curvatures and/or multiple layers that are fastened together, with potential damage being located in each of the multiple layers. To address this need, Victor Technologies has developed VIC-3D(R), a comprehensive eddy-current modeling code for solving forward and inverse problems in nondestructive evaluation (NDE). Certain problems in modeling forward and inverse problems produce huge data sets, often requiring days of computation. In this proposal, we will enhance VIC-3D(R) for near real-time large-scale nondestructive simulations and automated data reduction/analysis of large data sets. Furthermore, we will add models to VIC-3D(R) that will allow the characterization of cnrp composites by electromagnetic means nondestructively. The result will be the first such commercial code for characterizing advanced composites by electromagnetic means nondestructively.


Grant
Agency: Department of Defense | Branch: Air Force | Program: SBIR | Phase: Phase I | Award Amount: 149.93K | Year: 2012

ABSTRACT: Computational electromagnetics and inverse methods are the foundations of modern methods of eddy-current nondestructive evaluation (NDE). In this project we apply these methods to the problem of characterizing, in three dimensions, damage in complex aircraft structures. As the maintenance of the structural components of aircraft moves from time-based maintenance to condition-based maintenance, there is a need to completely characterize damage in structural components made from such disparate materials as aluminum, titanium and steel alloys, and carbon-fiber reinforced polymers (cfrp), such as graphite-epoxy composites. Further, the structural environments can be quite complex, including compound curvatures and/or multiple layers that are fastened together, with potential damage being located in each of the layers. The methods developed in this project will address all of these issues, and will be applicable to the nuclear power industry, as well as civil infrastructures and materials characterization. BENEFIT: The technology that we will develop in this project will be applicable to the aerospace, nuclear power, materials characterization and many other industries, so our research will have commercial benefits that extend far beyond military applications.


Pekker L.,Victor Technologies, LLC | Hussary N.,Victor Technologies, LLC
Journal of Physics D: Applied Physics | Year: 2014

In this paper we propose new boundary conditions at floating and biased walls for two-temperature thermal arc models. In the derived boundary conditions the walls are assumed to be cold and therefore there is no thermionic electron emission and erosion of the wall. The boundary conditions previously used in modeling high-pressure thermal arcs ignore the formation of a plasma sheath at floating walls. As shown in the paper, using the sheath boundary conditions lead to a drastic increase in the heat flux to the wall that has to be taken into account in modeling thermal arcs and heat transfer. © 2014 IOP Publishing Ltd.

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