This study develops an optimization method specifically for embedded sensors for structural health monitoring of a composite laminated aircraft structure. The chosen cost function is the component lifetime, balancing both the positive benefits of the condition-based monitoring enabled by the sensor information with the negative costs of the structural-performance degradation. The optical-fiber spacing is optimized, rather than the placement of individual sensors. Sensor interaction with damage and sensor-feature extraction are included into the optimization problem through experimentally derived probabilistic models. The resulting sensor-placement optimization has regions of decreasing laminate lifetime and regions of increasing laminate lifetime as a function of sensor spacing. A critical sensor spacing is also calculated, below which sensors are not recommended to be embedded.
Optimization of embedded sensor placement for structural health monitoring of composite airframes
Optimierung der Platzierung eingebetteter Sensorelemente für die Strukturüberwachung von Flugzeugbauteilen aus Verbundwerkstoff
AIAA Journal ; 50 , 11 ; 2536-2545
2012
10 Seiten, 15 Bilder, 26 Quellen
Article (Journal)
English
Optimization of Embedded Sensor Placement for Structural Health Monotoring of Composite Airframes
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