Paper number 199


Gerhard Mook , Juergen Pohl, Fritz Michel, Thomas Benziger

Institute of Materials Engineering and Materials Testing
The Otto-von-Guericke-University
GPO Box 4120, D-39016 Magdeburg

Summary Manufacturing and exploitation of adaptive material systems consisting of carbon fibre reinforced plastics (CFRP) with embedded piezoceramic sensors and actuators require sophisticated production techniques. Non-destructive methods are needed to detect manufacturing defects and to monitor the damage evaluation in a self-diagnostic manner. First, the paper presents in-situ bending tests accompanied by microscopic and acoustic observations showing damage mechanisms. Second, eddy current, ultrasonic and radiographic imaging techniques are presented as a powerful tool to characterize structural imperfections. Results are given for typical manufacturing and load induced damages. Third, first steps to a health monitoring system are discussed using ultrasonic and thermographic techniques.
Keywords carbon fiber reinforced plastics, piezoceramic actuators, failure mechanisms, non-destructive characterization, eddy current imaging, ultrasonic imaging, thermography, health monitoring.

Theme : Smart Materials and Smart Manufacturing

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