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:
May. 05, 2009
Filed:
Jan. 24, 2003
Neil J. Goldfine, Newton, MA (US);
Vladimir A. Zilberstein, Chestnut Hill, MA (US);
James M. Fisher, Centerville, GA (US);
David C. Grundy, Reading, MA (US);
Darrell E. Schlicker, Watertown, MA (US);
Vladimir Tsukernik, West Roxbury, MA (US);
Robert J. Lyons, Boston, MA (US);
Ian C. Shay, Cambridge, MA (US);
Andrew P. Washabaugh, Chula Vista, CA (US);
Neil J. Goldfine, Newton, MA (US);
Vladimir A. Zilberstein, Chestnut Hill, MA (US);
James M. Fisher, Centerville, GA (US);
David C. Grundy, Reading, MA (US);
Darrell E. Schlicker, Watertown, MA (US);
Vladimir Tsukernik, West Roxbury, MA (US);
Robert J. Lyons, Boston, MA (US);
Ian C. Shay, Cambridge, MA (US);
Andrew P. Washabaugh, Chula Vista, CA (US);
JENTEK Sensors, Inc., Waltham, MA (US);
Abstract
Methods are described for the use of conformable eddy-current sensors and sensor arrays for characterizing residual stresses and applied loads in materials. In addition, for magnetizable materials such as steels, these methods can be used to determine carbide content and to inspect for grinding burn damage. The sensor arrays can be mounted inside or scanned across the inner surface of test articles and hollow fasteners to monitor stress distributions. A technique for placing eddy-current coils around magnetizable fasteners for load distribution monitoring is also disclosed.