Title: Identification of material properties of sandwich structure with piezoelectric patches
Authors: Zemčík, Robert
Sadílek, Petr
Citation: Applied and Computational Mechanics. 2008, vol. 2, no. 1, p. 199-206.
Issue Date: 2008
Publisher: University of West Bohemia
Document type: článek
URI: http://www.kme.zcu.cz/acm/old_acm/full_papers/acm_vol2no1_p020.pdf
ISSN: 1802-680X (Print)
2336-1182 (Online)
Keywords: kompozitní materiály;vlastnosti;materiálové inženýrství;metoda konečných prvků;piezoelektrické materiály;výpočetní metody ve fyzice
Keywords in different language: composition materials;properties;material engineering;finite element method;piezoelectric materials;computational methods in physics
Abstract: The work focuses on light-weight sandwich structures made of carbon-epoxy skins and foam core which have unique bending stiffness compared to conventional materials. The skins are manufactured by vacuum autoclave technology from unidirectional prepregs and the sandwich is then glued together. The resulting material properties of the structure usually differ from those provided by manufacturer or even those obtained from experimental tests on separatematerials, which makes computationalmodels unreliable. Therefore, the properties are identified using the combination of experimental analysis of the sandwich with attached piezoelectric transducer and corresponding static and modal finite element analyses. Simple mathematical optimization with repetitive finite element solution is used. The model is then verified by transient analysis when the piezoelectric patch is excited by harmonic signals covering the first two eigen-frequencies and the induced oscillations are measured by laser sensor.
Rights: © 2008 University of West Bohemia. All rights reserved.
Appears in Collections:Volume 2, number 1 (2008)
Články / Articles (KME)
Volume 2, number 1 (2008)

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