Patents by Inventor Chi Ho Eric Cheung

Chi Ho Eric Cheung 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).

  • Method for measuring residual strain for cured composite part
    Patent number: 10066929
    Abstract: Method for measuring residual strain in a cured composite part includes taking a first image of at least two spaced apart particles positioned on a side of the cured composite part with the side positioned transverse to a first face side. The cure composite part includes a first ply has fibers and a second ply has fibers wherein the first ply and the second ply are positioned in overlying relationship to one another. At least a portion of the fibers of the first ply are positioned in angular relationship with at least a portion of the fibers of the second ply. The at least two spaced apart particles are associated with the second ply. Further included is a step of removing at least a portion of the first ply and taking a second image of the at least two spaced apart particles.
    Type: Grant
    Filed: April 25, 2017
    Date of Patent: September 4, 2018
    Assignee: THE BOEING COMPANY
    Inventors: Haozhong Gu, Ying Shan, Chi Ho Eric Cheung, Aaron N. Rinn, Jeffrey Olberg, Kevin E. McCrary