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Article

Prediction and Measurement of the Damping Ratios of Laminated Polymer Composite Plates

by 1,2,*, 2 and 2,3
1
Department Mechanics of Materials and Structures, Vrije Universiteit Brussel, 1050 Brussels, Belgium
2
Sim vzw, Technologiepark 48, 9052 Zwijnaarde, Belgium
3
Physical Chemistry and Polymer Science, Department MACH, Vrije Universiteit Brussel, 1050 Brussels, Belgium
*
Author to whom correspondence should be addressed.
Materials 2020, 13(15), 3370; https://doi.org/10.3390/ma13153370
Received: 4 June 2020 / Revised: 23 July 2020 / Accepted: 27 July 2020 / Published: 29 July 2020
(This article belongs to the Special Issue Advances in Fiber-Reinforced Polymer Composites)
Laminated composites materials are mostly used in dynamically loaded structures. The design of these structures with finite element packages is focused on vibrations, elastic deformations and failure control. Damping is often neglected because of its assumed secondary importance and also because of dearth of information on relevant material properties. This trend is prone to change as it is now realised that damping plays an increasingly important role in vibration comfort, noise radiation and crash simulations. This paper shows in a first step how to identify the orthotropic elastic and damping properties of single layer fibre-reinforced composite material sheets using a new extended version of the Resonalyser procedure. The procedure is based on the elastic-viscoelastic correspondence principle and uses a mixed numerical experimental method. In a subsequent step, the complex laminate stiffness values are computed using the identified single layer material properties. To validate this approach, the modal damping ratios of arbitrary laminated plates of different materials at several resonance frequencies are predicted and experimentally verified. View Full-Text
Keywords: composite materials; laminated plates; Resonalyser procedure; elastic-viscoelastic correspondence principle; complex stiffness composite materials; laminated plates; Resonalyser procedure; elastic-viscoelastic correspondence principle; complex stiffness
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MDPI and ACS Style

Sol, H.; Rahier, H.; Gu, J. Prediction and Measurement of the Damping Ratios of Laminated Polymer Composite Plates. Materials 2020, 13, 3370. https://doi.org/10.3390/ma13153370

AMA Style

Sol H, Rahier H, Gu J. Prediction and Measurement of the Damping Ratios of Laminated Polymer Composite Plates. Materials. 2020; 13(15):3370. https://doi.org/10.3390/ma13153370

Chicago/Turabian Style

Sol, Hugo, Hubert Rahier, and Jun Gu. 2020. "Prediction and Measurement of the Damping Ratios of Laminated Polymer Composite Plates" Materials 13, no. 15: 3370. https://doi.org/10.3390/ma13153370

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