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| Number | Title | Issue Date |
| 8069011 | Generating damage probability-of-detection curves in structural health monitoring transducer networks A method for automatically creating a probability of detection (POD) curve of an entire network of transducers monitoring and detecting damage in a structure is based on the POD of each of the individual actuator-sensor paths. These individual path PODs may be gener... | 11/29/2011 |
| 8046177 | Method and apparatus for detecting damage in armor structures Detection of damage in armor structures, using networks of piezoelectric transducers. In particular, piezoelectric transducers can be placed at various points on the armor structure, effectively creating a number of paths between pairs of transducers. Each of these ... | 10/25/2011 |
| 8036836 | Dynamic environmental change compensation of sensor data in structural health monitoring systems A method for adjusting signal data detected in a structural health monitoring (SHM) system to compensate for the effects of environmental variables acting thereon includes constructing a baseline data space comprised of sets of signal data. Current signal data sets ... | 10/11/2011 |
| 8020444 | Functional actuator-sensor path optimization in structural health monitoring system A method for optimizing transducer performance in an array of transducers in a structural health monitoring system includes specifying a plurality of paths between pairs of the transducers on a monitored structure and evaluating the quality of signal transmissions a... | 09/20/2011 |
| 7946176 | Methods and apparatus for extracting first arrival wave packets in a structural health monitoring system Methods and apparatus for extracting the first arrival wave packet of an acoustic signal in a structural health monitoring (SHM) system include receiving an acoustic signal transmitted between two transducers thereof. Electromagnetic cross-talk is removed from the s... | 05/24/2011 |
| 7930128 | Robust damage detection A method of improving damage detection in a structural health monitoring system includes obtaining a baseline set of signals corresponding to a range of values of an environmental effect variable for a plurality of first selected paths between pairs of a plurality o... | 04/19/2011 |
| 7908095 | Detecting damage in metal structures with structural health monitoring systems 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 transduce... | 03/15/2011 |
| 7809513 | Environmental change compensation in a structural health monitoring system A method and system of compensating for environmental effect when detecting signals using a structural health monitoring system includes collecting baseline data signals for one or more values of the environmental effect variable from signals transmitted along selec... | 10/05/2010 |
| 7672793 | Method for calculating probabilistic damage sizes in structural health monitoring systems A method for calculating the probable damage size in a structure includes defining a configuration of an array of transducers mounted on the structure. Any pair of the transducers includes an actuator and a sensor, and each pair defines a propagation path in the str... | 03/02/2010 |
| 7596078 | Method and apparatus for reducing crosstalk in a structural health monitoring system Methods and apparatus for reducing crosstalk in a structural health monitoring system. A pair of actuator input signals are sent to an actuator, each resulting in the transmission of stress waves to a corresponding sensor. The sensor then converts these stress waves... | 09/29/2009 |
| 7430911 | Method of detecting and analyzing changes in the external loading conditions of a structure A method for both detecting and analyzing a change in the loading condition of a structure. A flexible substrate is employed, in which a distributed network of sensors is built. This substrate is either affixed to the surface of the structure, or built within it, so... | 10/07/2008 |
| 7413919 | Method of manufacturing a structural health monitoring layer Methods of manufacturing a diagnostic layer containing an array of sensing elements. The sensing elements, associated wires, and any accompanying circuit elements, are incorporated various layers of a thin, flexible substrate. This substrate can then be affixed to a... | 08/19/2008 |
| 7395189 | Method and apparatus for switching among elements of a structural health monitoring system Use of a single line for switching multiple monitoring elements on/off, and a single line for sending signals to, or receiving signals from, those elements that are switched on. Monitoring elements each have an associated switching element, and each switching elemen... | 07/01/2008 |
| 7387033 | Single-wire sensor/actuator network for structure health monitoring A sensor/actuator network configured with a number of electrically-interconnected elements. More specifically, the sensors/actuators are each placed in electrical communication with the same transmission line. Various embodiments of such networks employ sensors/actu... | 06/17/2008 |
