Data processing: measuring – calibrating – or testing – Measurement system – Performance or efficiency evaluation
Reexamination Certificate
2007-10-23
2007-10-23
Wachsman, Hal (Department: 2857)
Data processing: measuring, calibrating, or testing
Measurement system
Performance or efficiency evaluation
C340S870150
Reexamination Certificate
active
10942714
ABSTRACT:
Methods and recordable media for monitoring structural health conditions. The present invention provides a method for interrogating a damage of a host structure using a diagnostic network patch (DNP) system having patches. An interrogation module partitions the plurality of patched in subgroups and measures the sensor signals generated and received by actuator and sensor patches, respectively. Then, a process module loads sensor signal data to identify Lamb wave modes, determine the time of arrival of the modes and generate a tomographic image. It also determines distribution of other structural condition indices to generate tomographic images of the host structure. A set of tomographic images can be stacked to generate a hyperspectral tomography cube. A classification module generates codebook based on K-mean/Learning Vector Quantization algorithm and uses a neural-fuzzy-inference system to determine the type of damages of the host structure.
REFERENCES:
patent: 2177629 (1939-10-01), Foster
patent: 3427481 (1969-02-01), Lenahan et al.
patent: 3593048 (1971-07-01), Dunegan et al.
patent: 4011472 (1977-03-01), Feng
patent: 4012952 (1977-03-01), Dory
patent: 4297887 (1981-11-01), Bucaro et al.
patent: 4480480 (1984-11-01), Scott et al.
patent: 4534222 (1985-08-01), Finch et al.
patent: 4665750 (1987-05-01), Rogers
patent: 4773758 (1988-09-01), Shaw
patent: 4961176 (1990-10-01), Tanaka et al.
patent: 5184516 (1993-02-01), Blazic et al.
patent: 5195046 (1993-03-01), Gerardi et al.
patent: 5440300 (1995-08-01), Spillman, Jr.
patent: 5452264 (1995-09-01), Holroyd
patent: 5524491 (1996-06-01), Cavalloni
patent: 5524625 (1996-06-01), Okazaki et al.
patent: 5625150 (1997-04-01), Greene et al.
patent: 5663504 (1997-09-01), Kluft
patent: 5677488 (1997-10-01), Monahan et al.
patent: 5710723 (1998-01-01), Hoth et al.
patent: 5814729 (1998-09-01), Wu et al.
patent: 5838439 (1998-11-01), Zang et al.
patent: 5854994 (1998-12-01), Canada et al.
patent: 6115653 (2000-09-01), Bergstrom et al.
patent: 6137621 (2000-10-01), Wu
patent: 6144790 (2000-11-01), Bledin
patent: 6161434 (2000-12-01), Fink et al.
patent: 6170334 (2001-01-01), Paulson
patent: 6182512 (2001-02-01), Lorraine
patent: 6204920 (2001-03-01), Ellerbrock et al.
patent: 6305227 (2001-10-01), Wu et al.
patent: 6346985 (2002-02-01), Hall
patent: 6370964 (2002-04-01), Chang et al.
patent: 6396262 (2002-05-01), Light et al.
patent: 6399939 (2002-06-01), Sundaresan et al.
patent: 7117742 (2006-10-01), Kim
patent: 7197931 (2007-04-01), Kim
patent: 2002/0012478 (2002-01-01), Thirion et al.
patent: 2004/0206187 (2004-10-01), Williams
patent: 2005/0002276 (2005-01-01), Yogeswaren
patent: 2006/0152735 (2006-07-01), Kageyama et al.
Kim, H. Y. nd Hwang, W. “Estimation of normal mode and other system farameters of composite laminate plates,” Composite Structures, 2001.
Kim, H.y., “Structural dynamic system reconstruction method for vibrating structures,” transaction of DSMC, ASME, 2003.
Kim H. Y., “Damage identidication using reconstructed residual frequency response functions,” Journal of Sound and Vibration, 2003.
Kim, H. Y, and Hwang, W., “Bending regidity and natural frequency of debonded honeycomb sandwich beams,” Composite Structures, 2002.
Moon, T.C., Kim, H,Y, and Hwang, W., “Natural frequency reduction model for matrix-dominated fatigue damage in composite laminates,” Composite Structures, 2003.
Advanced Structure Monitoring, Inc.
Baran Mary Catherine
Buchanan Ingersoll & Rooney LLP
Wachsman Hal
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