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Nondestructive method to determine material properties in orthotropic plates
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Fluid and Experimental Mechanics.
1987 (English)In: Polymer Composites, ISSN 0272-8397, E-ISSN 1548-0569, Vol. 8, no 2, p. 103-108Article in journal (Refereed) Published
Abstract [en]

An electronic speckle pattern interferometer (ESPI) is used to determine modes of vibration in rectangular, orthotropic, free-free-plates; that is using a noncontact, nondestructive, optical method. It is shown, using the finite element method (FEM), that each of the first three modes of vibration in rectangular orthotropic plates has a strong dependence upon only one of the main material parameters, namely the in-plane shear modulus and the two Young's moduli, respectively. With this one-variable dependence it is a simple task to determine the effective material parameters. This method has several obvious advantages compared to the use of test bars and it can be extended to give a measure of the damping parameters and probably also be used for production control. Preliminary results are presented and discussed

Place, publisher, year, edition, pages
1987. Vol. 8, no 2, p. 103-108
National Category
Applied Mechanics
Research subject
Experimental Mechanics
Identifiers
URN: urn:nbn:se:ltu:diva-12133Local ID: b35d0140-bb56-11db-b560-000ea68e967bOAI: oai:DiVA.org:ltu-12133DiVA, id: diva2:985083
Note
Godkänd; 1987; 20061026 (cira)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2017-11-24Bibliographically approved

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Fällström, Karl-EvertMolin, Nils-Erik

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