Multi-Mode Damage Detection Methods with Piezoelectric Wafer Active Sensors
Engineering, Mechanical Engineering
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.
Postprint version. Published in Journal of Intelligent Material Systems and Structures, Volume 20, Issue 11, 2009, pages 1329-1341.
© Journal of Intelligent Material Systems and Structures, 2009, SAGE Publications
Yu, L., Giurgiutiu, V. (2009). Multi-Mode Damage Detection Methods with Piezoelectric Wafer Active Sensors. Journal of Intelligent Material Systems and Structures, 20(11), 1329-1341.