Multi-mode Damage Detection Methods with Piezoelectric Wafer Active Sensors
Copyright policy )Multi-mode Damage Detection Methods with Piezoelectric Wafer Active Sensors
PWAS are small and non-invasive transducers that can be easily affixed to a structure to interrogate it at will. Their wideband non-resonant properties make them advantageous candidates for multiple modes structural health monitoring (SHM) and nondestructive evaluation (NDE) simply by changing the driving frequencies. This paper presents research results obtained by using PWAS transducer for SHM/NDE. The results are given in the following directions: (1) PWAS operation principles; (2) PWAS electromechanical impedance measurements; (3) PWAS ultrasonic SHM/NDE; and (4) PWAS multi-mode corrosion detection. The analytical methods and experimental results can be successfully used in the design of active SHM systems to be embedded on operational structures, such as aircraft panels.
- University of South Carolina United States
- University of South Carolina System United States
- University of South Carolina System United States
multiple modes, Lamb waves, NDE, Mechanical Engineering, 600, SHM, damage detection, Engineering, PWAS, impedance, phased array, piezoelectric
multiple modes, Lamb waves, NDE, Mechanical Engineering, 600, SHM, damage detection, Engineering, PWAS, impedance, phased array, piezoelectric
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