Characterization of the orthotropic viscoelastic tensor of composites using the Ultrasonic Polar Scan
| Autor: | W. Van Paepegem, Mathias Kersemans, Jannes Daemen, K. Van Den Abeele, Steven Delrue, Erik Verboven, Arvid Martens |
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| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Technology
REFLECTION Materials science Yield (engineering) TRANSMISSION Materials Science WAVES Non-destructive testing 02 engineering and technology Orthotropic material Mechanics Viscoelasticity 0203 mechanical engineering ELASTIC-CONSTANTS Nondestructive testing medicine CFRP COMPOSITES Orthotropy Composite material Civil and Structural Engineering Stiffness matrix Composites Science & Technology business.industry Particle swarm optimization Stiffness 021001 nanoscience & nanotechnology 020303 mechanical engineering & transports Materials Science Composites TESTS Ceramics and Composites Ultrasonic sensor medicine.symptom 0210 nano-technology business Material properties Material characterization Ultrasonic Polar Scan |
| Popis: | 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 [ 0 ] 8 carbon/epoxy laminate. The obtained inversion results yield complex stiffness parameters which are in close agreement to reported values in literature, and confirms the potential of the UPS technique and its inversion optimization routine as an enhanced NDT technique to quickly and accurately obtain characteristic material properties of composites. |
| Databáze: | OpenAIRE |
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