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:
Oct. 12, 2010
Filed:
Jun. 15, 2009
Neil J. Goldfine, Newton, MA (US);
Andrew P. Washabaugh, Chula Vista, CA (US);
Yanko K. Sheiretov, Waltham, MA (US);
Darrell E. Schlicker, Watertown, MA (US);
Robert J. Lyons, Boston, MA (US);
Mark D. Windoloski, Chelmsford, MA (US);
Christopher A. Craven, Bedford, MA (US);
Vladimir B. Tsukernik, West Roxbury, MA (US);
David C. Grundy, Reading, MA (US);
Neil J. Goldfine, Newton, MA (US);
Andrew P. Washabaugh, Chula Vista, CA (US);
Yanko K. Sheiretov, Waltham, MA (US);
Darrell E. Schlicker, Watertown, MA (US);
Robert J. Lyons, Boston, MA (US);
Mark D. Windoloski, Chelmsford, MA (US);
Christopher A. Craven, Bedford, MA (US);
Vladimir B. Tsukernik, West Roxbury, MA (US);
David C. Grundy, Reading, MA (US);
JENTEK Sensors, Inc., Waltham, MA (US);
Abstract
Eddy current sensors and sensor arrays are used for process quality and material condition assessment of conducting materials. In an embodiment, changes in spatially registered high resolution images taken before and after cold work processing reflect the quality of the process, such as intensity and coverage. These images also permit the suppression or removal of local outlier variations. Anisotropy in a material property, such as magnetic permeability or electrical conductivity, can be intentionally introduced and used to assess material condition resulting from an operation, such as a cold work or heat treatment. The anisotropy is determined by sensors that provide directional property measurements. The sensor directionality arises from constructs that use a linear conducting drive segment to impose the magnetic field in a test material. Maintaining the orientation of this drive segment, and associated sense elements, relative to a material edge provides enhanced sensitivity for crack detection at edges.