%0 Journal Article
	%A Haode Huo and  Jingjing He and  Rui Kang and  Xuefei Guan
	%D 2018
	%J International Journal of Structural and Construction Engineering
	%B World Academy of Science, Engineering and Technology
	%I Open Science Index 141, 2018
	%T A Numerical Investigation of Lamb Wave Damage Diagnosis for Composite Delamination Using Instantaneous Phase
	%U https://publications.waset.org/pdf/10009486
	%V 141
	%X This paper presents a study of Lamb wave damage
diagnosis of composite delamination using instantaneous phase
data. Numerical experiments are performed using the finite element
method. Different sizes of delamination damages are modeled
using finite element package ABAQUS. Lamb wave excitation
and responses data are obtained using a pitch-catch configuration.
Empirical mode decomposition is employed to extract the intrinsic
mode functions (IMF). Hilbert–Huang Transform is applied to each
of the resulting IMFs to obtain the instantaneous phase information.
The baseline data for healthy plates are also generated using the
same procedure. The size of delamination is correlated with the
instantaneous phase change for damage diagnosis. It is observed that
the unwrapped instantaneous phase of shows a consistent behavior
with the increasing delamination size.
	%P 833 - 836