Data processing: measuring – calibrating – or testing – Measurement system in a specific environment – Mechanical measurement system
Reexamination Certificate
2011-03-15
2011-03-15
Lau, Tung S (Department: 2857)
Data processing: measuring, calibrating, or testing
Measurement system in a specific environment
Mechanical measurement system
Reexamination Certificate
active
07908095
ABSTRACT:
A method useful in structural health monitoring (SHM) systems for detecting damages in metal structures includes extracting the zero-order symmetric and anti-symmetric mode signal components from each of a plurality of current sensor signals of an array of transducers mounted on the structure, matching the extracted signal components with corresponding signal components of a plurality of baseline sensor signals previously detected in the structure, computing respective indices IS0and IA0for each of the matched extracted current and baseline signal components based on respective signal energies thereof, and determining the presence of a damage in the structure if either of the indices IS0and IA0of a plurality of neighboring sensor paths of the structure is greater than a selected threshold value.
REFERENCES:
H. Liu, Effect of a biasing electric field on the propagation of antisymmetric Lamb waves in piezoelectric plates, International Journal of Solids and Structures 39 (2002) 1777-1790, 2002 Elsevier Science Ltd.
Beard Shawn J.
Chang Fu-Kuo
Li Irene
Liu Paul B.
Acellent Technologies, Inc.
Innovation Counsel LLP
Lau Tung S
LandOfFree
Detecting damage in metal structures with structural health... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Detecting damage in metal structures with structural health..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Detecting damage in metal structures with structural health... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2681732