The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 05, 2014
Filed:
Oct. 05, 2011
Bruce I. Girrell, Traverse City, MI (US);
Thomas A. Johnson, Interlochen, MI (US);
Ameet V. Joshi, Playa Vista, CA (US);
Douglas W. Spencer, Williamsburg, MI (US);
Gaurav D. Kulkarni, Williamsburg, MI (US);
David J. Henderson, Traverse City, MI (US);
Bruce I. Girrell, Traverse City, MI (US);
Thomas A. Johnson, Interlochen, MI (US);
Ameet V. Joshi, Playa Vista, CA (US);
Douglas W. Spencer, Williamsburg, MI (US);
Gaurav D. Kulkarni, Williamsburg, MI (US);
David J. Henderson, Traverse City, MI (US);
Microline Technology Corporation, Traverse City, MI (US);
Abstract
A stress detecting system and method operable to detect stresses in a conduit or pipe includes a tool movable along a conduit or pipe and operable to generate a magnetic field. The tool is operable to sense magnetic Barkhausen noise within the conduit, such as within a wall of the conduit, in response to the tool generating the magnetic field. The stress detecting system is operable to detect a change in stress along the conduit responsive to an output of the tool. The system may detect changes in stress that are caused by geological changes or shifting or thermal changes at or near the conduit to determine changes in stress along the conduit and changes in stress along the conduit over time and during use of the conduit.