Patents by Inventor Darryl L. Wagar

Darryl L. Wagar 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).

  • Flexible magnetostrictive probe having sensor elements without permanent magnets
    Patent number: 9465011
    Abstract: A sensor for use in magnetostrictive testing of a structure. An array of sensor elements is attached to a flexible backing. Each sensor element has a thin strip made from magnetostrictive material, a first coil wrapped around the width of the strip and operable to provide a DC bias magnetic field, and a second coil wrapped around the width of the strip and operable for MsS generation and detection. Typically, the first coils of all strips are electrically connected to each other and the second coils of all strips are electrically connected to each other, to form two separate coil circuits. The probe may be wrapped around the circumference of a cylindrical structure, and used for magnetostrictive testing.
    Type: Grant
    Filed: April 17, 2013
    Date of Patent: October 11, 2016
    Assignee: SOUTHWEST RESEARCH INSTITUTE
    Inventors: Sergey A. Vinogradov, Hegeon Kwun, Darryl L. Wagar
  • Flexible Magnetostrictive Probe Having Sensor Elements Without Permanent Magnets
    Publication number: 20140312888
    Abstract: A sensor for use in magnetostrictive testing of a structure. An array of sensor elements is attached to a flexible backing. Each sensor element has a thin strip made from magnetostrictive material, a first coil wrapped around the width of the strip and operable to provide a DC bias magnetic field, and a second coil wrapped around the width of the strip and operable for MsS generation and detection. Typically, the first coils of all strips are electrically connected to each other and the second coils of all strips are electrically connected to each other, to form two separate coil circuits. The probe may be wrapped around the circumference of a cylindrical structure, and used for magnetostrictive testing.
    Type: Application
    Filed: April 17, 2013
    Publication date: October 23, 2014
    Applicant: Southwest Research Institute
    Inventors: Sergey A. Vinogradov, Hegeon Kwun, Darryl L. Wagar