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Guided waves in anisotropic and quasi-isotropic aerospace composites: three-dimensional simulation and experiment.

Abstract：

:Three-dimensional (3D) elastic wave simulations can be used to investigate and optimize nondestructive evaluation (NDE) and structural health monitoring (SHM) ultrasonic damage detection techniques for aerospace materials. 3D anisotropic elastodynamic finite integration technique (EFIT) has been implemented for ultrasonic waves in carbon fiber reinforced polymer (CFRP) composite laminates. This paper describes 3D EFIT simulations of guided wave propagation in undamaged and damaged anisotropic and quasi-isotropic composite plates. Comparisons are made between simulations of guided waves in undamaged anisotropic composite plates and both experimental laser Doppler vibrometer (LDV) wavefield data and dispersion curves. Time domain and wavenumber domain comparisons are described. Wave interaction with complex geometry delamination damage is then simulated to investigate how simulation tools incorporating realistic damage geometries can aid in the understanding of wave interaction with CFRP damage. In order to move beyond simplistic assumptions of damage geometry, volumetric delamination data acquired via X-ray microfocus computed tomography is directly incorporated into the simulation. Simulated guided wave interaction with the complex geometry delamination is compared to experimental LDV time domain data and 3D wave interaction with the volumetric damage is discussed.

journal_name

Ultrasonics

journal_title

Ultrasonics

authors

Leckey CA,Rogge MD,Raymond Parker F

doi

10.1016/j.ultras.2013.05.007

subject

Has Abstract

pub_date

2014-01-01 00:00:00

pages

385-94

issue

1

eissn

0041-624X

issn

1874-9968

pii

S0041-624X(13)00165-0

journal_volume

54

pub_type

杂志文章

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