Patents by Inventor Salah Ramadan Agha

Salah Ramadan Agha 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).

  • Determining expected fatigue life of hard machined components
    Patent number: 7117574
    Abstract: A method of determining expected fatigue life of machined bearing races or other components wherein a hardened surface of each bearing race is machined to provide a machined surface including the steps of determining hardness distribution and residual stress distribution along a depth into the machined surface as a function of cutting parameters, determining a relationship of expected fatigue life of the machined bearing races as a function of the hardness distribution and the residual stress distribution using a fracture mechanics model, and determining expected fatigue life from the relationship using actual cutting parameters employed in machining the hardened surface of the bearing races. Cutting conditions to optimize fatigue life can be selected based on the expected fatigue life.
    Type: Grant
    Filed: March 14, 2003
    Date of Patent: October 10, 2006
    Assignee: Purdue Research Foundation
    Inventors: Chunghorng R. Liu, Salah Ramadan Agha
  • Determining expected fatigue life of hard machined components
    Publication number: 20040016326
    Abstract: A method of determining expected fatigue life of machined bearing races or other components wherein a hardened surface of each bearing race is machined to provide a machined surface including the steps of determining hardness distribution and residual stress distribution along a depth into the machined surface as a function of cutting parameters, determining a relationship of expected fatigue life of the machined bearing races as a function of the hardness distribution and the residual stress distribution using a fracture mechanics model, and determining expected fatigue life from the relationship using actual cutting parameters employed in machining the hardened surface of the bearing races. Cutting conditions to optimize fatigue life can be selected based on the expected fatigue life.
    Type: Application
    Filed: March 14, 2003
    Publication date: January 29, 2004
    Inventors: Chunghorng R. Liu, Salah Ramadan Agha