Patents by Inventor Paul Filewich

Paul Filewich 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).

  • Sequencing of multi-pass laser shock peening applications
    Patent number: 9764422
    Abstract: A method for laser shock peening (LSP) a workpiece is disclosed. The method may include identifying a geometry of the workpiece, determining a number of applications of LSP upon a first side and a second side of the workpiece, and sequencing the applications among the first side and the second side to minimize distortion.
    Type: Grant
    Filed: December 18, 2013
    Date of Patent: September 19, 2017
    Assignee: UNITED TECHNOLOGIES CORPORATION
    Inventor: Paul Filewich
  • DMZ fracture boundary limit
    Patent number: 9638038
    Abstract: A method of establishing a boundary for a material improvement process on a workpiece is disclosed. The method may include identifying a maximum allowable damage depth on the workpiece; identifying a maximum constant thickness line on the workpiece at an extent of the maximum allowable damage depth; identifying a peak vibratory stress gradient on the workpiece; identifying a peak combined engine stress on the workpiece; and specifying the boundary for the material improvement process on the workpiece relative to the maximum constant thickness line, peak vibratory stress gradient, and peak combined engine stress.
    Type: Grant
    Filed: January 10, 2013
    Date of Patent: May 2, 2017
    Assignee: UNITED TECHNOLOGIES CORPORATION
    Inventors: Paul D. Duesler, Paul Filewich
  • Methods for testing laser shock peening
    Patent number: 9632004
    Abstract: A method for testing an edge of a rotor blade that has been hardened is disclosed. A shallow notch is created in the edge of the blade using a laser and the blade is then tested using an HCF process. If the blade passes the test, a deeper notch is imparted into the edge of the blade and the blade is retested. If the blade passes the second test, a third notch may be imparted into the edge of the blade and the blade is tested again. Any test failure may provide assistance in modifying the parameters used to harden the blade. The blade may be initially hardened using an LSP process.
    Type: Grant
    Filed: October 1, 2013
    Date of Patent: April 25, 2017
    Assignee: UNITED TECHNOLOGIES CORPORATION
    Inventors: Paul W. Duesler, Paul Filewich
  • DMZ fracture boundary limit
    Patent number: 9416663
    Abstract: A method of establishing a boundary for a material improvement process on a workpiece is disclosed. The method may include identifying a maximum allowable damage depth on the workpiece; identifying a maximum constant thickness line on the workpiece at an extent of the maximum allowable damage depth; identifying a peak vibratory stress gradient on the workpiece; identifying a peak combined engine stress on the workpiece; and specifying the boundary for the material improvement process on the workpiece relative to the maximum constant thickness line, peak vibratory stress gradient, and peak combined engine stress.
    Type: Grant
    Filed: January 10, 2013
    Date of Patent: August 16, 2016
    Assignee: UNITED TECHNOLOGIES CORPORATION
    Inventors: Paul D. Duesler, Paul Filewich
  • Sequencing of Multi-Pass Laser Shock Peening Applications
    Publication number: 20160001395
    Abstract: A method for laser shock peening (LSP) a workpiece is disclosed. The method may include identifying a geometry of the workpiece, determining a number of applications of LSP upon a first side and a second side of the workpiece, and sequencing the applications among the first side and the second side to minimize distortion.
    Type: Application
    Filed: December 18, 2013
    Publication date: January 7, 2016
    Inventor: Paul FILEWICH
  • Methods for Testing Laser Shock Peening
    Publication number: 20150185109
    Abstract: A method for testing an edge of a rotor blade that has been hardened is disclosed. A shallow notch is created in the edge of the blade using a laser and the blade is then tested using an HCF process. If the blade passes the test, a deeper notch is imparted into the edge of the blade and the blade is retested. If the blade passes the second test, a third notch may be imparted into the edge of the blade and the blade is tested again. Any test failure may provide assistance in modifying the parameters used to harden the blade. The blade may be initially hardened using an LSP process.
    Type: Application
    Filed: October 1, 2013
    Publication date: July 2, 2015
    Inventors: Paul W. Duesler, Paul Filewich
  • DMZ Fracture Boundary Limit
    Publication number: 20140193267
    Abstract: A method of establishing a boundary for a material improvement process on a workpiece is disclosed. The method may include identifying a maximum allowable damage depth on the workpiece; identifying a maximum constant thickness line on the workpiece at an extent of the maximum allowable damage depth; identifying a peak vibratory stress gradient on the workpiece; identifying a peak combined engine stress on the workpiece; and specifying the boundary for the material improvement process on the workpiece relative to the maximum constant thickness line, peak vibratory stress gradient, and peak combined engine stress.
    Type: Application
    Filed: January 10, 2013
    Publication date: July 10, 2014
    Applicant: UNITED TECHNOLOGIES CORPORATION
    Inventors: Paul D. Duesler, Paul Filewich