Patents by Inventor Clement C. Hiel

Clement C. Hiel 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 and apparatus for measuring the strain developed in a coated surface
    Patent number: 5199305
    Abstract: A method and apparatus are provided for determining the strain developed in a coated surface. A beam with a coating on a surface thereof is mounted as a cantilever and a force is applied to the free end of the beam to cause deflection of the beam until the coating on the beam fails. The strain in the beam, and hence in the coating at the point of failure, is determined based on the dimensions of the beam, the point along the beam where failure of the coating occurs and the amount of deflection of the beam, and this determination is made independently of the temperature of the beam and the material from which the beam is made. The determination is made based on the equation E=1.5.sub.x /1.sup.3, where E is strain, h is the beam thickness, d is the beam deflection, x is the distance from the free end of the beam to the point where failure of the coating occurred, and l is the length of the beam.
    Type: Grant
    Filed: October 21, 1991
    Date of Patent: April 6, 1993
    Assignee: The United States of America as represented by the Administrator of National Aeronautics and Space Administration
    Inventors: Sheldon M. Smith, Clement C. Hiel