Manufacturing and testing of active composite panels with embedded piezoelectric sensors and actuators: wires out by molded-in holes

2003 ◽  
Author(s):  
Mehrdad N. Ghasemi-Nejhad ◽  
Saeid Pourjalali
Keyword(s):  
Piezoelectric Sensors ◽  
Composite Panels ◽  
Sensors And Actuators ◽  
Piezoelectric Sensors And Actuators ◽  
Active Composite

Manufacturing and Active Control Testing of Active Composite Panels With Embedded Piezoelectric Sensors and Actuators: Wires Out by Cut-Holes and Embedding

Aerospace ◽  
2003 ◽  
Author(s):  
Mehrdad N. Ghasemi Nejhad ◽  
Richard Russ
Keyword(s):  
Composite Material ◽  
High Temperature ◽  
Vibration Suppression ◽  
Curing Temperature ◽  
Piezoelectric Sensors ◽  
Composite Panels ◽  
Sensors And Actuators ◽  
Advantages And Disadvantages ◽  
Piezoelectric Sensors And Actuators ◽  
Active Composite

This work presents manufacturing and testing of active composite panels (ACPs) with embedded piezoelectric sensors and actuators. The composite material employed here is a plain weave carbon/epoxy prepreg fabric with about 0.3 mm ply thickness. A cross-ply type stacking sequence is employed for the ACPs. The piezoelectric flexible patches employed here are Active Fiber Composites with 0.33 mm thickness. Composite cut-out layers are used to fill the space around the embedded piezo patches to minimize the problems associated with ply drops in composites. The piezoelectric patches were embedded inside the composite laminate. High-temperature wires were soldered to the piezo leads, insulated from the carbon substructure by high-temperature materials, and were taken out of the composite laminates employing both cut-hole and embedding techniques. The laminated ACPs were co-cured inside an autoclave employing the cure cycle recommended by the composite material supplier. The Curie temperature of the embedded piezo patches should be well above the curing temperature of the composite materials as was the case here. The manufactured ACPs were trimmed and then tested for their functionality. Vibration suppression as well as simultaneous vibration suppression and precision positioning tests, using Hybrid Adaptive Control techniques were successfully conducted on the manufactured ACP beams and plates and their functionality were demonstrated. The advantages and disadvantages of ACPs manufactured by taking the wires out employing cut-holes and embedding techniques, in terms of manufacturing and performance, are presented.

Finite Element Modelling of Piezoelectric Sensors for Damage Identification in Composite Panels

2008 ◽  
Vol 385-387 ◽  
pp. 885-888
Author(s):  
M.H. Aliabadi ◽  
A. Apicella ◽  
Albert Sanqirgo-Rodriguez
Keyword(s):  
Finite Element ◽  
Health Monitoring ◽  
Finite Element Modelling ◽  
Damage Identification ◽  
Piezoelectric Sensors ◽  
Composite Panels ◽  
The Finite Element Method ◽  
Detection Capability ◽  
Sensors And Actuators ◽  
Piezoelectric Sensors And Actuators

In this paper the application of the finite element method is presented to modeling piezoelectric sensors and actuators for use in structural health monitoring of composite panels. It this demonstrated that FEM can be used to simulate sensorised composite panels and investigate the damage detection capability of sensors.

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