سال انتشار: ۱۳۸۶
محل انتشار: پانزدهمین کنفرانس سالانه مهندسی مکانیک
تعداد صفحات: ۶
Soorgee – Graduate Student, Advanced Dynamic and Control Systems Lab, School of Mechanical Engineering, University of Tehran, Tehran, Iran
Yousefi-Koma – Assistant Professor Advanced Dynamic and Control Systems Lab School of Mechanical Engineering, University of Tehran,Tehran,Iran
curve of an aluminum plate. The commercial finite element code (ABAQUS) has been employed to model a plate with an actuator-sensor pair and a tiny groove representing the crack. After a transient dynamic analysis, the sensor voltage has been acquired. Using Hilbert Huang Transform (HHT) method, from the time-energy spectrum of sensor response, location of the crack has been detected using propagating wave
time-of-flight. A wavelet analysis has also been employed to validate HHT results.