The Experts below are selected from a list of 48 Experts worldwide ranked by ideXlab platform

Marco De Lucas, M.c. - One of the best experts on this subject based on the ideXlab platform.

  • High Temperature oxidation resistance and microstructure of laser-shock peened Ti-Beta-21S
    'Elsevier BV', 2020
    Co-Authors: Lavisse L., Kanjer A., Berger P., Gorny C., Peyre P., Montesin T., Marco De Lucas, M.c.
    Abstract:

    International audienceImproving the high Temperature (HT) resistance of titanium alloys is currently a technological challenge for extending their use in aerospace engines. Ti-Beta-21S is a metastable $\beta$ titanium alloy specifically designed for high Temperature applications up to 593 °C. We report the effect of a surface treatment by laser-shock peening (LSP) on the high Temperature behavior of Ti-Beta-21S in order to increase further its Maximum Service Temperature. The oxidation kinetics at 700 °C for duration up to 3000 h showed that the LSP treatment increases the oxidation resistance of Ti-Beta-21S. The effects of the LSP treatment on the alloy microstructure, its evolution at high Temperature and the diffusion of light atmospheric elements (oxygen and nitrogen) are also reported

  • High Temperature oxidation resistance and microstructure of laser-shock peened Ti-Beta-21S
    'Elsevier BV', 2020
    Co-Authors: Lavisse Luc, Berger P., Peyre P., Montesin T., Kanjer Armand, Gorny Cyril, Marco De Lucas, M.c.
    Abstract:

    Improving the high Temperature (HT) resistance of titanium alloys is currently a technological challenge for extending their use in aerospace engines. Ti-Beta-21S is a metastable β titanium alloy specifically designed for high Temperature applications up to 593 °C. We report the effect of a surface treatment by laser-shock peening (LSP) on the high Temperature behavior of Ti-Beta-21S in order to increase further its Maximum Service Temperature. The oxidation kinetics at 700 °C for duration up to 3000 h showed that the LSP treatment increases the oxidation resistance of Ti-Beta-21S. The effects of the LSP treatment on the alloy microstructure, its evolution at high Temperature and the diffusion of light atmospheric elements (oxygen and nitrogen) are also reported

Susan C. Mantell - One of the best experts on this subject based on the ideXlab platform.

  • The Effect of a Thermotropic Material on the Optical Efficiency and Stagnation Temperature of a Polymer Flat Plate Solar Collector
    Journal of Solar Energy Engineering, 2014
    Co-Authors: Adam C. Gladen, Jane H. Davidson, Susan C. Mantell
    Abstract:

    Solar hot water and space heating systems constructed of commodity polymers have the potential to reduce the initial cost of solar thermal systems. However, a polymer absorber must be prevented from exceeding its Maximum Service Temperature during stagnation. Here, the addition of a thermotropic material to the surface of the absorber is considered. The thermotropic layer provides passive overheat protection by switching from high transmittance during normal operation to high reflectance if the Temperature of the absorber becomes too high. A one dimensional model of a glazed, flat-plate collector with a polymer absorber and thermotropic material is used to determine the effects of the optical properties of the thermotropic material on the optical efficiency and the stagnation Temperature of a collector. A key result is identification of the reflectance in the translucent state required to provide overheat protection for potential polymer absorber materials. For example, a thermotropic material in its translucent state should have a solar-weighted reflectance greater than or equal to 52% to protect a polypropylene absorber which has a Maximum Service Temperature of 115 °C.

  • The effect of a thermotropic material on the optical efficiency and stagnation Temperature of a polymer flat plate solar collector
    Volume 2: Economic Environmental and Policy Aspects of Alternate Energy; Fuels and Infrastructure Biofuels and Energy Storage; High Performance Buildi, 2014
    Co-Authors: Adam C. Gladen, Jane H. Davidson, Susan C. Mantell
    Abstract:

    Solar hot water and space heating systems constructed of commodity polymers have the potential to significantly reduce the initial cost of solar thermal systems. However, a polymer absorber must be prevented from exceeding its Maximum Service Temperature during stagnation. Here we consider the addition of a thermotropic material to the surface of the absorber. The thermotropic layer provides passive overheat protection by switching from high transmittance during normal operation to high reflectance if the Temperature of the absorber becomes too high. In this paper, a one dimensional model of a glazed, flat-plate collector with a polymer absorber and thermotropic material is used to determine the effects of the optical properties of a thermotropic material on optical efficiency and stagnation Temperature of the collector. A key result is identification of the reflectance in the translucent state required to provide overheat protection for potential polymer absorber materials. For example, the reflectance of a thermotropic material in the translucent state should be greater than or equal to 51% for a polypropylene absorber which has a Maximum Service Temperature of 115 °C.Copyright © 2014 by ASME

Adam C. Gladen - One of the best experts on this subject based on the ideXlab platform.

  • The Effect of a Thermotropic Material on the Optical Efficiency and Stagnation Temperature of a Polymer Flat Plate Solar Collector
    Journal of Solar Energy Engineering, 2014
    Co-Authors: Adam C. Gladen, Jane H. Davidson, Susan C. Mantell
    Abstract:

    Solar hot water and space heating systems constructed of commodity polymers have the potential to reduce the initial cost of solar thermal systems. However, a polymer absorber must be prevented from exceeding its Maximum Service Temperature during stagnation. Here, the addition of a thermotropic material to the surface of the absorber is considered. The thermotropic layer provides passive overheat protection by switching from high transmittance during normal operation to high reflectance if the Temperature of the absorber becomes too high. A one dimensional model of a glazed, flat-plate collector with a polymer absorber and thermotropic material is used to determine the effects of the optical properties of the thermotropic material on the optical efficiency and the stagnation Temperature of a collector. A key result is identification of the reflectance in the translucent state required to provide overheat protection for potential polymer absorber materials. For example, a thermotropic material in its translucent state should have a solar-weighted reflectance greater than or equal to 52% to protect a polypropylene absorber which has a Maximum Service Temperature of 115 °C.

  • The effect of a thermotropic material on the optical efficiency and stagnation Temperature of a polymer flat plate solar collector
    Volume 2: Economic Environmental and Policy Aspects of Alternate Energy; Fuels and Infrastructure Biofuels and Energy Storage; High Performance Buildi, 2014
    Co-Authors: Adam C. Gladen, Jane H. Davidson, Susan C. Mantell
    Abstract:

    Solar hot water and space heating systems constructed of commodity polymers have the potential to significantly reduce the initial cost of solar thermal systems. However, a polymer absorber must be prevented from exceeding its Maximum Service Temperature during stagnation. Here we consider the addition of a thermotropic material to the surface of the absorber. The thermotropic layer provides passive overheat protection by switching from high transmittance during normal operation to high reflectance if the Temperature of the absorber becomes too high. In this paper, a one dimensional model of a glazed, flat-plate collector with a polymer absorber and thermotropic material is used to determine the effects of the optical properties of a thermotropic material on optical efficiency and stagnation Temperature of the collector. A key result is identification of the reflectance in the translucent state required to provide overheat protection for potential polymer absorber materials. For example, the reflectance of a thermotropic material in the translucent state should be greater than or equal to 51% for a polypropylene absorber which has a Maximum Service Temperature of 115 °C.Copyright © 2014 by ASME

Peyre P. - One of the best experts on this subject based on the ideXlab platform.

  • High Temperature oxidation resistance and microstructure of laser-shock peened Ti-Beta-21S
    'Elsevier BV', 2020
    Co-Authors: Lavisse L., Kanjer A., Berger P., Gorny C., Peyre P., Montesin T., Marco De Lucas, M.c.
    Abstract:

    International audienceImproving the high Temperature (HT) resistance of titanium alloys is currently a technological challenge for extending their use in aerospace engines. Ti-Beta-21S is a metastable $\beta$ titanium alloy specifically designed for high Temperature applications up to 593 °C. We report the effect of a surface treatment by laser-shock peening (LSP) on the high Temperature behavior of Ti-Beta-21S in order to increase further its Maximum Service Temperature. The oxidation kinetics at 700 °C for duration up to 3000 h showed that the LSP treatment increases the oxidation resistance of Ti-Beta-21S. The effects of the LSP treatment on the alloy microstructure, its evolution at high Temperature and the diffusion of light atmospheric elements (oxygen and nitrogen) are also reported

  • High Temperature oxidation resistance and microstructure of laser-shock peened Ti-Beta-21S
    'Elsevier BV', 2020
    Co-Authors: Lavisse Luc, Berger P., Peyre P., Montesin T., Kanjer Armand, Gorny Cyril, Marco De Lucas, M.c.
    Abstract:

    Improving the high Temperature (HT) resistance of titanium alloys is currently a technological challenge for extending their use in aerospace engines. Ti-Beta-21S is a metastable β titanium alloy specifically designed for high Temperature applications up to 593 °C. We report the effect of a surface treatment by laser-shock peening (LSP) on the high Temperature behavior of Ti-Beta-21S in order to increase further its Maximum Service Temperature. The oxidation kinetics at 700 °C for duration up to 3000 h showed that the LSP treatment increases the oxidation resistance of Ti-Beta-21S. The effects of the LSP treatment on the alloy microstructure, its evolution at high Temperature and the diffusion of light atmospheric elements (oxygen and nitrogen) are also reported

Berger P. - One of the best experts on this subject based on the ideXlab platform.

  • High Temperature oxidation resistance and microstructure of laser-shock peened Ti-Beta-21S
    'Elsevier BV', 2020
    Co-Authors: Lavisse L., Kanjer A., Berger P., Gorny C., Peyre P., Montesin T., Marco De Lucas, M.c.
    Abstract:

    International audienceImproving the high Temperature (HT) resistance of titanium alloys is currently a technological challenge for extending their use in aerospace engines. Ti-Beta-21S is a metastable $\beta$ titanium alloy specifically designed for high Temperature applications up to 593 °C. We report the effect of a surface treatment by laser-shock peening (LSP) on the high Temperature behavior of Ti-Beta-21S in order to increase further its Maximum Service Temperature. The oxidation kinetics at 700 °C for duration up to 3000 h showed that the LSP treatment increases the oxidation resistance of Ti-Beta-21S. The effects of the LSP treatment on the alloy microstructure, its evolution at high Temperature and the diffusion of light atmospheric elements (oxygen and nitrogen) are also reported

  • High Temperature oxidation resistance and microstructure of laser-shock peened Ti-Beta-21S
    'Elsevier BV', 2020
    Co-Authors: Lavisse Luc, Berger P., Peyre P., Montesin T., Kanjer Armand, Gorny Cyril, Marco De Lucas, M.c.
    Abstract:

    Improving the high Temperature (HT) resistance of titanium alloys is currently a technological challenge for extending their use in aerospace engines. Ti-Beta-21S is a metastable β titanium alloy specifically designed for high Temperature applications up to 593 °C. We report the effect of a surface treatment by laser-shock peening (LSP) on the high Temperature behavior of Ti-Beta-21S in order to increase further its Maximum Service Temperature. The oxidation kinetics at 700 °C for duration up to 3000 h showed that the LSP treatment increases the oxidation resistance of Ti-Beta-21S. The effects of the LSP treatment on the alloy microstructure, its evolution at high Temperature and the diffusion of light atmospheric elements (oxygen and nitrogen) are also reported