Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/8636
Title: Quantitative identification of multiple damage in laminated composite beams using A0 Lamb mode
Authors: Wang, D
Ye, L
Su, Z 
Lu, Y
Keywords: composite beam
Lamb waves
low frequency
multiple damage
reflection coefficient
time-of-flight
Issue Date: 2011
Publisher: Sage Publications Ltd
Source: Journal of composite materials, 2011, v. 45, no. 20, p. 2061-2069 How to cite?
Journal: Journal of Composite Materials 
Abstract: A Time-of-Flight (ToF)-based interrogation with a single PZT actuator-sensor pair in the pulse-echo configuration for locating and quantifying dual damage in woven laminated beams was investigated through experiments. By applying the Hilbert transform, the ToF and the reflection coefficient are extracted from each damage-induced energy component as damage-sensitive features for identifying the location and severity of damage. The resolution and limitation of this ToF-based interrogation with a single PZT actuator-sensor pair in the pulse-echo configuration for identification of multiple damage are discussed. The results demonstrated that the damage identification algorithm based on the comparison of energy spectra of Lamb wave signals captured in different states has the capability of identifying dual damage in beam-like composite structures.
URI: http://hdl.handle.net/10397/8636
DOI: 10.1177/0021998311401057
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