Patents by Inventor Mo-How Herman Shen

Mo-How Herman Shen has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 10208374
    Abstract: A method to increase the damping of a substrate using a face-centered cubic damping material foil containing voids.
    Type: Grant
    Filed: April 4, 2018
    Date of Patent: February 19, 2019
    Inventor: Mo-How Herman Shen
  • Publication number: 20180230588
    Abstract: A method to increase the damping of a substrate using a face-centered cubic damping material foil containing voids.
    Type: Application
    Filed: April 4, 2018
    Publication date: August 16, 2018
    Inventor: Mo-How Herman Shen
  • Patent number: 10023951
    Abstract: A method to increase the damping of a substrate using a face-centered cubic ferromagnetic damping material.
    Type: Grant
    Filed: June 19, 2017
    Date of Patent: July 17, 2018
    Inventor: Mo-How Herman Shen
  • Publication number: 20170314118
    Abstract: A method to increase the damping of a substrate using a face-centered cubic ferromagnetic damping material.
    Type: Application
    Filed: June 19, 2017
    Publication date: November 2, 2017
    Inventor: Mo-How Herman Shen
  • Patent number: 9683283
    Abstract: A method to increase the damping of a substrate using a face-centered cubic ferromagnetic damping coating.
    Type: Grant
    Filed: September 19, 2016
    Date of Patent: June 20, 2017
    Inventor: Mo-How Herman Shen
  • Publication number: 20170138205
    Abstract: A turbine component having a face-centered cubic ferromagnetic damping coating with high damping loss attributes applied in a non-molten solid state.
    Type: Application
    Filed: September 20, 2016
    Publication date: May 18, 2017
    Inventor: Mo-How Herman Shen
  • Publication number: 20170114443
    Abstract: A method to increase the damping of a substrate using a face-centered cubic ferromagnetic damping coating.
    Type: Application
    Filed: September 19, 2016
    Publication date: April 27, 2017
    Inventor: Mo-How Herman Shen
  • Publication number: 20170002668
    Abstract: A turbine component having a low residual stress ferromagnetic damping coating. The ferromagnetic damping coating may include a ferromagnetic damping material applied in powder form, which may be directed at a surface of the substrate at an application velocity so that it causes partial plastic deformation of the surface while adhering to the surface of the substrate to create a ferromagnetic damping coating. The ferromagnetic damping coating has a balanced coating residual stress, including a tensile quenching stress component and a compressive peening stress component. The resulting coated substrate exhibits a high damping capacity.
    Type: Application
    Filed: September 8, 2016
    Publication date: January 5, 2017
    Inventor: Mo-How Herman Shen
  • Patent number: 9458727
    Abstract: A turbine component having a low residual stress ferromagnetic damping coating. The ferromagnetic damping coating may include a ferromagnetic damping material applied in at least partially molten powder form, which may be directed at a surface of the substrate at an application velocity so that it causes partial plastic deformation of the surface while adhering to the surface of the substrate and solidifying in less than 3 seconds to create a ferromagnetic damping coating, resulting in a coated substrate. The ferromagnetic damping coating has a balanced coating residual stress, including a tensile quenching stress component and a compressive peening stress component. The balanced coating residual stress is within a range of ±50 MPa without having to subject the coated substrate to a high temperature annealing process. The resulting coated substrate exhibits a high damping capacity.
    Type: Grant
    Filed: March 10, 2014
    Date of Patent: October 4, 2016
    Inventor: Mo-How Herman Shen
  • Patent number: 9458534
    Abstract: A method to increase the damping of a substrate using a face-centered cubic ferromagnetic damping coating having high damping loss attributes when a strain amplitude is 500-2000 micro-strain, and/or maximum damping loss attributes that occurs when the strain amplitude is greater than 250 micro-strain, and a turbine component having a face-centered cubic ferromagnetic damping coating.
    Type: Grant
    Filed: October 22, 2013
    Date of Patent: October 4, 2016
    Inventor: Mo-How Herman Shen
  • Publication number: 20150111061
    Abstract: A method to increase the damping of a substrate using a face-centered cubic ferromagnetic damping coating having high damping loss attributes when a strain amplitude is 500-2000 micro-strain, and/or maximum damping loss attributes that occurs when the strain amplitude is greater than 250 micro-strain, and a turbine component having a face-centered cubic ferromagnetic damping coating.
    Type: Application
    Filed: October 22, 2013
    Publication date: April 23, 2015
    Inventor: Mo-How Herman Shen
  • Publication number: 20150111062
    Abstract: A method to increase the damping of a substrate using a face-centered cubic ferromagnetic damping coating having high damping loss attributes when a strain amplitude is 500-2000 micro-strain, and/or maximum damping loss attributes that occurs when the strain amplitude is greater than 250 micro-strain, and a turbine component having a face-centered cubic ferromagnetic damping coating.
    Type: Application
    Filed: October 22, 2013
    Publication date: April 23, 2015
    Inventor: Mo-How Herman Shen
  • Publication number: 20140186653
    Abstract: A turbine component having a low residual stress ferromagnetic damping coating. The ferromagnetic damping coating may include a ferromagnetic damping material applied in at least partially molten powder form, which may be directed at a surface of the substrate at an application velocity so that it causes partial plastic deformation of the surface while adhering to the surface of the substrate and solidifying in less than 3 seconds to create a ferromagnetic damping coating, resulting in a coated substrate. The ferromagnetic damping coating has a balanced coating residual stress, including a tensile quenching stress component and a compressive peening stress component. The balanced coating residual stress is within a range of ±50 MPa without having to subject the coated substrate to a high temperature annealing process. The resulting coated substrate exhibits a high damping capacity.
    Type: Application
    Filed: March 10, 2014
    Publication date: July 3, 2014
    Inventor: Mo-How Herman Shen
  • Publication number: 20120135272
    Abstract: A method for applying a low residual stress damping coating to a surface of a substrate is provided. The method includes heating a ferromagnetic damping material in powder form such that the ferromagnetic damping material is at least partially molten. Next, the at least partially molten ferromagnetic damping material is directed at a surface of the substrate at an application velocity so that it adheres to the surface of the substrate to create a ferromagnetic damping coating on the surface of the substrate, resulting in a coated substrate. The ferromagnetic damping coating has a balanced coating residual stress, including a tensile quenching stress component and a compressive peening stress component. The balanced coating residual stress is within a range of ±50 MPa without having to subject the coated substrate to a high temperature annealing process. The resulting coated substrate exhibits a high damping capacity.
    Type: Application
    Filed: June 27, 2011
    Publication date: May 31, 2012
    Inventor: Mo-How Herman SHEN
  • Publication number: 20080124480
    Abstract: A coating for an article is provided to enhance vibration damping and fatigue strength, without diluting resistance to erosion, wear, and corrosion for metallic components such as blades, blisks, shafts and bearings of a gas turbine engine operating in a hostile environment. The invention includes a metallic substrate and a thin layer of magneto-mechanical material bonded to the surface of the substrate by a coating process. The coating material is made of the Fe—Cr—Al or Fe—Cr—Mo based magneto-mechanical materials and deposited to the surface of the substrate via a thermal spraying process in vacuum or in air. In order to achieve maximum damping capability and resistance to erosion, wear, and corrosion, several optimal compositions of the coating material in conjunction with new application methods have been developed. The coating is often very thin and smooth in order not to dilute aerodynamic efficiency and fatigue strength.
    Type: Application
    Filed: April 17, 2007
    Publication date: May 29, 2008
    Inventor: Mo-How Herman Shen