TY - GEN
T1 - A new ultrasonic guided wave signal processing method for unde of laminated composite material
AU - Xu, Hanhui
AU - Xu, Chunguang
AU - Zhou, Shiyuan
PY - 2010
Y1 - 2010
N2 - A new ultrasonic guided wave signal processing method for ultrasonic nondestructive evaluation (UNDE) of laminated composite material has been developed in this paper. The key part of the method is the empirical mode decomposition (EMD) method and short-time Fourier transform (STFT) with which the characteristic parameter can be introduced to represent the size of flaw in laminated composite plate. EMD method is widely recognized to be efficient to nonlinear and non-stationary signals. STFT provides more accurate energy-frequency-time distribution for intrinsic mode functions of ultrasonic guided wave signal compared with Hilbert transform and instantaneous frequency algorithm of Hilbert-Huang Transform (HHT). The dispersive and anisotropic nature of laminated composite will be studied theoretically. In the experimental study, ten plates with different size of disbonded defect. In comparison with the results from the theory and experiment, it is confirmed that the new method is efficient for signal processing propagation of for UNDE of laminated composite plate.
AB - A new ultrasonic guided wave signal processing method for ultrasonic nondestructive evaluation (UNDE) of laminated composite material has been developed in this paper. The key part of the method is the empirical mode decomposition (EMD) method and short-time Fourier transform (STFT) with which the characteristic parameter can be introduced to represent the size of flaw in laminated composite plate. EMD method is widely recognized to be efficient to nonlinear and non-stationary signals. STFT provides more accurate energy-frequency-time distribution for intrinsic mode functions of ultrasonic guided wave signal compared with Hilbert transform and instantaneous frequency algorithm of Hilbert-Huang Transform (HHT). The dispersive and anisotropic nature of laminated composite will be studied theoretically. In the experimental study, ten plates with different size of disbonded defect. In comparison with the results from the theory and experiment, it is confirmed that the new method is efficient for signal processing propagation of for UNDE of laminated composite plate.
KW - Empirical mode decomposition
KW - Laminated composite plate
KW - Ultrasonic nondestructive evaluation
UR - http://www.scopus.com/inward/record.url?scp=77956066032&partnerID=8YFLogxK
U2 - 10.1109/MACE.2010.5536254
DO - 10.1109/MACE.2010.5536254
M3 - Conference contribution
AN - SCOPUS:77956066032
SN - 9781424477388
T3 - 2010 International Conference on Mechanic Automation and Control Engineering, MACE2010
SP - 2542
EP - 2545
BT - 2010 International Conference on Mechanic Automation and Control Engineering, MACE2010
T2 - 2010 International Conference on Mechanic Automation and Control Engineering, MACE2010
Y2 - 26 June 2010 through 28 June 2010
ER -