Characterization of the orthotropic viscoelastic tensor of composites using the Ultrasonic Polar Scan

An enhanced two-stage inversion scheme for the determination of the viscoelastic properties of orthotropic plates (e.g. fiber reinforced polymers) based on the pulsed ultrasonic polar scan (P-UPS) is presented. A forward numerical model for the P-UPS is combined with an efficient optimizer routine (...

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Bibliographic Details
Published in:Composite structures 2019-12, Vol.230, p.111499, Article 111499
Main Authors: Martens, A., Kersemans, M., Daemen, J., Verboven, E., Van Paepegem, W., Delrue, S., Van Den Abeele, K.
Format: Article
Language:English
Subjects:
Composites
Material characterization
Non-destructive testing
Orthotropy
Particle swarm optimization
Ultrasonic Polar Scan
Viscoelasticity
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Summary:An enhanced two-stage inversion scheme for the determination of the viscoelastic properties of orthotropic plates (e.g. fiber reinforced polymers) based on the pulsed ultrasonic polar scan (P-UPS) is presented. A forward numerical model for the P-UPS is combined with an efficient optimizer routine (particle swarm optimizer, PSO) to inversely extract the complex orthotropic stiffness tensor, as well as the orientation of the main axes of orthotropy. The developed inversion technique is validated on synthetic data, yielding accurate results with small deviations: elasticity tensor
ISSN:0263-8223
1879-1085
DOI:10.1016/j.compstruct.2019.111499