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R. Ofner - One of the best experts on this subject based on the ideXlab platform.

  • Geometric Surface Inspection for Stainless Steel Cathode Plates and Copper Cathodes
    BHM Berg- und Hüttenmännische Monatshefte, 2010
    Co-Authors: I. Filzwieser, A. Filzwieser, R. Ofner
    Abstract:

    The targets for copper producers during the electrolytic refining step are reaching high current efficiency, low specific energy consumption, and a good copper cathode quality. With the new CQS (Copper Quality System) measurement system these values can be influenced positively. Two different applications of this system are presented. One application of the CQS is online copper cathode quality evaluation. By installing this system nearby the stripping machine, an online measurement of the copper cathode quality is provided. The copper cathode quality can be judged and marked according to the customer's quality criterions. Another application of the CQS is the measurement of stainless steel cathode plates. Reaching high current efficiency is always a target in electrorefining. Many different parameters are influencing this process value: besides chemical and physical anode quality, electrolyte conditions, and inhibitors, also the shape of the stainless steel plate has a decisive influence. With the CQS measurement system the geometry and shape of the stainless steel plates are measured continuously. The measurements include the extent of bending of the plates, possible damages and canting. If a defined value is reached it is possible to reject the stainless steel plate, so that it can be repaired or replaced. Das Ziel des elektrolytischen Raffinationsschrittes einer Kupferraffinationselektroyse ist das Erreichen hoher Stromausbeuten bei niedrigem spezifischem Energieverbrauch und guter Kupferkathodenqualität. Mit dem neuen CQS-Messsytem können durch Messung und Korrektur der Edelstahlkathoden alle erwähnten Parameter positiv beeinflusst werden. Es werden zwei Anwendungen des Messsytems vorgestellt. Eine der Anwendungen des CQS-Systems ist die kontinuierliche Messung und Evaluierung der Kupferkathodenqualität. Die Installation erfolgt im Bereich der Strippingmaschine, um alle durchlaufenden Kathoden zu vermessen, zu berechnen und die dazugehörige Qualität zu kennzeichnen. Eine weitere Anwendung ist das Vermessen der Edelstahlkathoden. Das Erreichen einer hohen Stromausbeute stellt immer ein entscheidendes Ziel in der Kupferraffinationselektrolyse dar. Diese wird neben der chemischen und physikalischen Anodenqualität, den Elektrolytgehalten, den Inhibitoren und der geometrisch korrekten Form des Stahlbleches beeinflusst. Mit dem QSC-Messsytem können die Geometrie und die Oberflächenform der Edelstahlkathoden kontinuierlich vermessen werden. Damit können verbogene, beschädigte und schiefhängende Edelstahl kathoden erkannt und bei Notwendigkeit entfernt werden. Danach werden die Edelstahlbleche repariert und dem Prozess wieder zugeführt.

  • Geometric Surface Inspection for Stainless Steel Cathode Plates and Copper Cathodes
    BHM Berg- und Hüttenmännische Monatshefte, 2010
    Co-Authors: I. Filzwieser, A. Filzwieser, R. Ofner
    Abstract:

    The targets for copper producers during the electrolytic refining step are reaching high current efficiency, low specific energy consumption, and a good copper cathode quality. With the new CQS (Copper Quality System) measurement system these values can be influenced positively. Two different applications of this system are presented. One application of the CQS is online copper cathode quality evaluation. By installing this system nearby the stripping machine, an online measurement of the copper cathode quality is provided. The copper cathode quality can be judged and marked according to the customer's quality criterions. Another application of the CQS is the measurement of stainless steel cathode plates. Reaching high current efficiency is always a target in electrorefining. Many different parameters are influencing this process value: besides chemical and physical anode quality, electrolyte conditions, and inhibitors, also the shape of the stainless steel plate has a decisive influence. With the CQS measurement system the geometry and shape of the stainless steel plates are measured continuously. The measurements include the extent of bending of the plates, possible damages and canting. If a defined value is reached it is possible to reject the stainless steel plate, so that it can be repaired or replaced.

I. Filzwieser - One of the best experts on this subject based on the ideXlab platform.

  • Geometric Surface Inspection for Stainless Steel Cathode Plates and Copper Cathodes
    BHM Berg- und Hüttenmännische Monatshefte, 2010
    Co-Authors: I. Filzwieser, A. Filzwieser, R. Ofner
    Abstract:

    The targets for copper producers during the electrolytic refining step are reaching high current efficiency, low specific energy consumption, and a good copper cathode quality. With the new CQS (Copper Quality System) measurement system these values can be influenced positively. Two different applications of this system are presented. One application of the CQS is online copper cathode quality evaluation. By installing this system nearby the stripping machine, an online measurement of the copper cathode quality is provided. The copper cathode quality can be judged and marked according to the customer's quality criterions. Another application of the CQS is the measurement of stainless steel cathode plates. Reaching high current efficiency is always a target in electrorefining. Many different parameters are influencing this process value: besides chemical and physical anode quality, electrolyte conditions, and inhibitors, also the shape of the stainless steel plate has a decisive influence. With the CQS measurement system the geometry and shape of the stainless steel plates are measured continuously. The measurements include the extent of bending of the plates, possible damages and canting. If a defined value is reached it is possible to reject the stainless steel plate, so that it can be repaired or replaced. Das Ziel des elektrolytischen Raffinationsschrittes einer Kupferraffinationselektroyse ist das Erreichen hoher Stromausbeuten bei niedrigem spezifischem Energieverbrauch und guter Kupferkathodenqualität. Mit dem neuen CQS-Messsytem können durch Messung und Korrektur der Edelstahlkathoden alle erwähnten Parameter positiv beeinflusst werden. Es werden zwei Anwendungen des Messsytems vorgestellt. Eine der Anwendungen des CQS-Systems ist die kontinuierliche Messung und Evaluierung der Kupferkathodenqualität. Die Installation erfolgt im Bereich der Strippingmaschine, um alle durchlaufenden Kathoden zu vermessen, zu berechnen und die dazugehörige Qualität zu kennzeichnen. Eine weitere Anwendung ist das Vermessen der Edelstahlkathoden. Das Erreichen einer hohen Stromausbeute stellt immer ein entscheidendes Ziel in der Kupferraffinationselektrolyse dar. Diese wird neben der chemischen und physikalischen Anodenqualität, den Elektrolytgehalten, den Inhibitoren und der geometrisch korrekten Form des Stahlbleches beeinflusst. Mit dem QSC-Messsytem können die Geometrie und die Oberflächenform der Edelstahlkathoden kontinuierlich vermessen werden. Damit können verbogene, beschädigte und schiefhängende Edelstahl kathoden erkannt und bei Notwendigkeit entfernt werden. Danach werden die Edelstahlbleche repariert und dem Prozess wieder zugeführt.

  • Geometric Surface Inspection for Stainless Steel Cathode Plates and Copper Cathodes
    BHM Berg- und Hüttenmännische Monatshefte, 2010
    Co-Authors: I. Filzwieser, A. Filzwieser, R. Ofner
    Abstract:

    The targets for copper producers during the electrolytic refining step are reaching high current efficiency, low specific energy consumption, and a good copper cathode quality. With the new CQS (Copper Quality System) measurement system these values can be influenced positively. Two different applications of this system are presented. One application of the CQS is online copper cathode quality evaluation. By installing this system nearby the stripping machine, an online measurement of the copper cathode quality is provided. The copper cathode quality can be judged and marked according to the customer's quality criterions. Another application of the CQS is the measurement of stainless steel cathode plates. Reaching high current efficiency is always a target in electrorefining. Many different parameters are influencing this process value: besides chemical and physical anode quality, electrolyte conditions, and inhibitors, also the shape of the stainless steel plate has a decisive influence. With the CQS measurement system the geometry and shape of the stainless steel plates are measured continuously. The measurements include the extent of bending of the plates, possible damages and canting. If a defined value is reached it is possible to reject the stainless steel plate, so that it can be repaired or replaced.

Wing Kin Chan - One of the best experts on this subject based on the ideXlab platform.

  • size dependent Surface stress Surface stiffness and young s modulus of hexagonal prism 111 β sic nanowires
    Journal of Applied Physics, 2008
    Co-Authors: Tongyi Zhang, Wing Kin Chan
    Abstract:

    The present work studies the size-dependent Surface stress, Surface stiffness, and Young’s modulus of a prism crystalline nanowire, which is theoretically treated to be composed of a hypothetical nanowire phase, a true two-dimensional Geometric Surface phase, and a true one-dimensional Geometric edge phase. The hypothetical nanowire phase could be elastically deformed due to relaxation of a free-standing nanowire, without any applied load, with respect to its bulk counterpart. The initially deformed nanowire phase is taken as reference in the present work in the determination of excess Surface and edge energies. The theoretical results indicate that the edge phase causes the nominal specific Surface energy, Surface stress, and Surface stiffness to be size dependent, and the Surface phase and the edge phase make the nominal Young’s modulus size dependent. The edge and Surface effects are more significant as the cross-sectional area of a nanowire becomes smaller. Molecular dynamics simulations on hexagonal ...

Stanley Osher - One of the best experts on this subject based on the ideXlab platform.

  • Geometric Surface processing via normal maps
    ACM Transactions on Graphics, 2003
    Co-Authors: Tolga Tasdizen, Ross T. Whitaker, Paul Burchard, Stanley Osher
    Abstract:

    We propose that the generalization of signal and image processing to Surfaces entails filtering the normals of the Surface, rather than filtering the positions of points on a mesh. Using a variational strategy, penalty functions on the Surface geometry can be formulated as penalty functions on the Surface normals, which are computed using geometry-based shape metrics and minimized using fourth-order gradient descent partial differential equations (PDEs). In this paper, we introduce a two-step approach to implementing Geometric processing tools for Surfaces: (i) operating on the normal map of a Surface, and (ii) manipulating the Surface to fit the processed normals. Iterating this two-step process, we efficiently can implement Geometric fourth-order flows by solving a set of coupled second-order PDEs. The computational approach uses level set Surface models; therefore, the processing does not depend on any underlying parameterization. This paper will demonstrate that the proposed strategy provides for a wide range of Surface processing operations, including edge-preserving smoothing and high-boost filtering. Furthermore, the generality of the implementation makes it appropriate for very complex Surface models, for example, those constructed directly from measured data.

  • Geometric Surface smoothing via anisotropic diffusion of normals
    IEEE Visualization, 2002
    Co-Authors: Tolga Tasdizen, Ross T. Whitaker, Paul Burchard, Stanley Osher
    Abstract:

    This paper introduces a method for smoothing complex, noisy Surfaces, while preserving (and enhancing) sharp, Geometric features. It has two main advantages over previous approaches to feature preserving Surface smoothing. First is the use of level set Surface models, which allows us to process very complex shapes of arbitrary and changing topology. This generality makes it well suited for processing Surfaces that are derived directly from measured data. The second advantage is that the proposed method derives from a well-founded formulation, which is a natural generalization of anisotropic diffusion, as used in image processing. This formulation is based on the proposition that the generalization of image filtering entails filtering the normals of the Surface, rather than processing the positions of points on a mesh.

  • IEEE Visualization - Geometric Surface smoothing via anisotropic diffusion of normals
    IEEE Visualization 2002. VIS 2002., 2002
    Co-Authors: Tolga Tasdizen, Ross T. Whitaker, Paul Burchard, Stanley Osher
    Abstract:

    This paper introduces a method for smoothing complex, noisy Surfaces, while preserving (and enhancing) sharp, Geometric features. It has two main advantages over previous approaches to feature preserving Surface smoothing. First is the use of level set Surface models, which allows us to process very complex shapes of arbitrary and changing topology. This generality makes it well suited for processing Surfaces that are derived directly from measured data. The second advantage is that the proposed method derives from a well-founded formulation, which is a natural generalization of anisotropic diffusion, as used in image processing. This formulation is based on the proposition that the generalization of image filtering entails filtering the normals of the Surface, rather than processing the positions of points on a mesh.

A. Filzwieser - One of the best experts on this subject based on the ideXlab platform.

  • Geometric Surface Inspection for Stainless Steel Cathode Plates and Copper Cathodes
    BHM Berg- und Hüttenmännische Monatshefte, 2010
    Co-Authors: I. Filzwieser, A. Filzwieser, R. Ofner
    Abstract:

    The targets for copper producers during the electrolytic refining step are reaching high current efficiency, low specific energy consumption, and a good copper cathode quality. With the new CQS (Copper Quality System) measurement system these values can be influenced positively. Two different applications of this system are presented. One application of the CQS is online copper cathode quality evaluation. By installing this system nearby the stripping machine, an online measurement of the copper cathode quality is provided. The copper cathode quality can be judged and marked according to the customer's quality criterions. Another application of the CQS is the measurement of stainless steel cathode plates. Reaching high current efficiency is always a target in electrorefining. Many different parameters are influencing this process value: besides chemical and physical anode quality, electrolyte conditions, and inhibitors, also the shape of the stainless steel plate has a decisive influence. With the CQS measurement system the geometry and shape of the stainless steel plates are measured continuously. The measurements include the extent of bending of the plates, possible damages and canting. If a defined value is reached it is possible to reject the stainless steel plate, so that it can be repaired or replaced. Das Ziel des elektrolytischen Raffinationsschrittes einer Kupferraffinationselektroyse ist das Erreichen hoher Stromausbeuten bei niedrigem spezifischem Energieverbrauch und guter Kupferkathodenqualität. Mit dem neuen CQS-Messsytem können durch Messung und Korrektur der Edelstahlkathoden alle erwähnten Parameter positiv beeinflusst werden. Es werden zwei Anwendungen des Messsytems vorgestellt. Eine der Anwendungen des CQS-Systems ist die kontinuierliche Messung und Evaluierung der Kupferkathodenqualität. Die Installation erfolgt im Bereich der Strippingmaschine, um alle durchlaufenden Kathoden zu vermessen, zu berechnen und die dazugehörige Qualität zu kennzeichnen. Eine weitere Anwendung ist das Vermessen der Edelstahlkathoden. Das Erreichen einer hohen Stromausbeute stellt immer ein entscheidendes Ziel in der Kupferraffinationselektrolyse dar. Diese wird neben der chemischen und physikalischen Anodenqualität, den Elektrolytgehalten, den Inhibitoren und der geometrisch korrekten Form des Stahlbleches beeinflusst. Mit dem QSC-Messsytem können die Geometrie und die Oberflächenform der Edelstahlkathoden kontinuierlich vermessen werden. Damit können verbogene, beschädigte und schiefhängende Edelstahl kathoden erkannt und bei Notwendigkeit entfernt werden. Danach werden die Edelstahlbleche repariert und dem Prozess wieder zugeführt.

  • Geometric Surface Inspection for Stainless Steel Cathode Plates and Copper Cathodes
    BHM Berg- und Hüttenmännische Monatshefte, 2010
    Co-Authors: I. Filzwieser, A. Filzwieser, R. Ofner
    Abstract:

    The targets for copper producers during the electrolytic refining step are reaching high current efficiency, low specific energy consumption, and a good copper cathode quality. With the new CQS (Copper Quality System) measurement system these values can be influenced positively. Two different applications of this system are presented. One application of the CQS is online copper cathode quality evaluation. By installing this system nearby the stripping machine, an online measurement of the copper cathode quality is provided. The copper cathode quality can be judged and marked according to the customer's quality criterions. Another application of the CQS is the measurement of stainless steel cathode plates. Reaching high current efficiency is always a target in electrorefining. Many different parameters are influencing this process value: besides chemical and physical anode quality, electrolyte conditions, and inhibitors, also the shape of the stainless steel plate has a decisive influence. With the CQS measurement system the geometry and shape of the stainless steel plates are measured continuously. The measurements include the extent of bending of the plates, possible damages and canting. If a defined value is reached it is possible to reject the stainless steel plate, so that it can be repaired or replaced.