Start Date

2016 12:00 AM

Description

This paper addresses a gap in the literature on the 3-dimensional scattering of the fundamental symmetric Lamb mode 𝑆𝑆0 from delimitations in composite plates. We study the scattering of low-frequency 𝑆𝑆0 mode by delamination in a stiffened 4-ply CFRP composite plate with 0/0/0/0 ply orientation. The work is carried out using three dimensional finite element simulation validated by experiments. Far field scattering coefficients for the 𝑆𝑆0 mode are plotted as a function of circumferential position around the delamination. Results show that the delamination size and through thickness location have less influence on 𝑆𝑆0 Lamb wave scattering in the low-frequency regime where the 𝑆𝑆0 mode is non-dispersive. This work will be useful for practical Lamb wave based inspection of composite plate structures.

Language

en

File Format

application/pdf

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Jan 1st, 12:00 AM

Interaction of Guided Waves with Delaminations in Composite Plate Structures

This paper addresses a gap in the literature on the 3-dimensional scattering of the fundamental symmetric Lamb mode 𝑆𝑆0 from delimitations in composite plates. We study the scattering of low-frequency 𝑆𝑆0 mode by delamination in a stiffened 4-ply CFRP composite plate with 0/0/0/0 ply orientation. The work is carried out using three dimensional finite element simulation validated by experiments. Far field scattering coefficients for the 𝑆𝑆0 mode are plotted as a function of circumferential position around the delamination. Results show that the delamination size and through thickness location have less influence on 𝑆𝑆0 Lamb wave scattering in the low-frequency regime where the 𝑆𝑆0 mode is non-dispersive. This work will be useful for practical Lamb wave based inspection of composite plate structures.