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Hybrid inversion of elastic moduli of composite plates from ultrasonic transmission spectra using PVDF plane wave sensor
Published in
2010
Volume: 41
   
Issue: 1
Pages: 8 - 16
Abstract
Determination of the elastic moduli of polymer matrix based structural composite materials is necessary to characterize their strength after fabrication and while in service. This paper reports a modification to goniometry based ultrasonic through transmission data collection by using wide aperture low cost polyvinylidene fluoride (PVDF) based receiver. The use of PVDF based receiver more than satisfies the plane-wave conditions required from measurement. The use of a hybrid inversion technique which combines genetic algorithm based evolutionary approach, critical angle information and the use of stiffness invariants is implemented for determination of stiffness values from experimental transmission spectra measurements. Results for unidirectional and a multi-layered composite laminate are presented. © 2009 Elsevier Ltd. All rights reserved.
About the journal
JournalComposites Part B: Engineering
ISSN13598368
Open AccessNo
Concepts (24)
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    A. POLYMER MATRIX COMPOSITES (PMC)
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    B. mechanical properties
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    Composite plates
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    CRITICAL ANGLES
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    Evolutionary approach
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    HYBRID INVERSION TECHNIQUE
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    Layered structures
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    Low costs
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    Multi-layered
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    PLANE WAVE
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    Polyvinylidene fluorides
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    STIFFNESS VALUES
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    STRUCTURAL COMPOSITE MATERIALS
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    THROUGH TRANSMISSION
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    Transmission spectrums
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    Composite micromechanics
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    Elastic moduli
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    Genetic algorithms
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    Mechanical properties
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    Sandwich structures
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    Stiffness
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    Ultrasonic applications
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    Ultrasonics
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    Polymer matrix composites