The Experts below are selected from a list of 9 Experts worldwide ranked by ideXlab platform

Beena Sukumaran - One of the best experts on this subject based on the ideXlab platform.

  • imaging systems and algorithms for the numerical characterization of 3d Shapes of Particle aggregates
    Proceedings of the 2006 IEEE International Workshop on Imagining Systems and Techniques (IST 2006), 2006
    Co-Authors: Patrick Giordano, Daniel Barrot, J Corriveau, Shreekanth Mandayam, Beena Sukumaran
    Abstract:

    The properties of geomaterial aggregates, mainly flow and shear characteristics, are significantly dependent on the Shapes of the Particles in the mixture. 3D Particle models that have been previously developed to quantify this dependence have proved complex and expensive. This paper describes an optical tomography technique for the acquisition of real Particle data that can be characterized using 3D shape descriptors. The algebraic reconstruction technique (ART) is used to synthesize 3D Particle Shapes from 2D tomography projections. Results demonstrating the efficacy of the method on a set of sand mixtures are presented.

Made Yulistya I Negara - One of the best experts on this subject based on the ideXlab platform.

  • effect of static floating Particle Shapes on partial discharge characteristics in mineral oil
    IEEE International Conference on Properties and Applications of Dielectric Materials, 2021
    Co-Authors: Daniar Fahmi, Hazlee Azil Illias, Hazlie Mokhlis, Made Yulistya I Negara
    Abstract:

    The existence of metal contaminants can reduce the performance of transformer oil by leading to partial discharge or even complete breakdown. Applied electric field will make Particles move or even may float in the insulation. Many studies have been made to observe free moving Particles effect on electrical performance of transformer oil. In this work, investigation on floating metal Particle effect on partial discharge characteristics of mineral oil was conducted. The metal Particle was artificially floated between 10 mm gap of plane-plane electrodes using a plastic stick. Two different Shapes of Particle but having similar volume, which were 2 mm diameter of ball and 2.8 mm length of cylinder with 1.5 mm diameter, were fabricated from copper material. In addition, the Particle was positioned into three different points, which were having contact with electrode, floating in the vicinity of electrode, and floating near the gap center. Then, both electrodes system and floating Particles were put in new mineral oil. Partial discharge measurements and observations were carried out under AC voltage. The results showed that both Particles generated slightly different partial discharge pattern and more intense when placed near the electrode. It is expected that local field enhancement around the Particle and the distance between the electrode and the Particle play key role on the phenomena. It can be concluded that partial discharge characteristic of the Particle was quite different with the floating Particle position.

Patrick Giordano - One of the best experts on this subject based on the ideXlab platform.

  • imaging systems and algorithms for the numerical characterization of 3d Shapes of Particle aggregates
    Proceedings of the 2006 IEEE International Workshop on Imagining Systems and Techniques (IST 2006), 2006
    Co-Authors: Patrick Giordano, Daniel Barrot, J Corriveau, Shreekanth Mandayam, Beena Sukumaran
    Abstract:

    The properties of geomaterial aggregates, mainly flow and shear characteristics, are significantly dependent on the Shapes of the Particles in the mixture. 3D Particle models that have been previously developed to quantify this dependence have proved complex and expensive. This paper describes an optical tomography technique for the acquisition of real Particle data that can be characterized using 3D shape descriptors. The algebraic reconstruction technique (ART) is used to synthesize 3D Particle Shapes from 2D tomography projections. Results demonstrating the efficacy of the method on a set of sand mixtures are presented.

Daniar Fahmi - One of the best experts on this subject based on the ideXlab platform.

  • effect of static floating Particle Shapes on partial discharge characteristics in mineral oil
    IEEE International Conference on Properties and Applications of Dielectric Materials, 2021
    Co-Authors: Daniar Fahmi, Hazlee Azil Illias, Hazlie Mokhlis, Made Yulistya I Negara
    Abstract:

    The existence of metal contaminants can reduce the performance of transformer oil by leading to partial discharge or even complete breakdown. Applied electric field will make Particles move or even may float in the insulation. Many studies have been made to observe free moving Particles effect on electrical performance of transformer oil. In this work, investigation on floating metal Particle effect on partial discharge characteristics of mineral oil was conducted. The metal Particle was artificially floated between 10 mm gap of plane-plane electrodes using a plastic stick. Two different Shapes of Particle but having similar volume, which were 2 mm diameter of ball and 2.8 mm length of cylinder with 1.5 mm diameter, were fabricated from copper material. In addition, the Particle was positioned into three different points, which were having contact with electrode, floating in the vicinity of electrode, and floating near the gap center. Then, both electrodes system and floating Particles were put in new mineral oil. Partial discharge measurements and observations were carried out under AC voltage. The results showed that both Particles generated slightly different partial discharge pattern and more intense when placed near the electrode. It is expected that local field enhancement around the Particle and the distance between the electrode and the Particle play key role on the phenomena. It can be concluded that partial discharge characteristic of the Particle was quite different with the floating Particle position.

Daniel Barrot - One of the best experts on this subject based on the ideXlab platform.

  • imaging systems and algorithms for the numerical characterization of 3d Shapes of Particle aggregates
    Proceedings of the 2006 IEEE International Workshop on Imagining Systems and Techniques (IST 2006), 2006
    Co-Authors: Patrick Giordano, Daniel Barrot, J Corriveau, Shreekanth Mandayam, Beena Sukumaran
    Abstract:

    The properties of geomaterial aggregates, mainly flow and shear characteristics, are significantly dependent on the Shapes of the Particles in the mixture. 3D Particle models that have been previously developed to quantify this dependence have proved complex and expensive. This paper describes an optical tomography technique for the acquisition of real Particle data that can be characterized using 3D shape descriptors. The algebraic reconstruction technique (ART) is used to synthesize 3D Particle Shapes from 2D tomography projections. Results demonstrating the efficacy of the method on a set of sand mixtures are presented.