Experimental Determinations of the Damping Factor for Composite Sandwich Bars Reinforced with Two Carbon Fiber Layers

Abstract:

In this paper we will build some new and original composite sandwich bars reinforced with two layers of carbon fiber, with the core made of polypropylene honeycomb. Starting from the dynamic response of these bars that are in free vibration, we will establish a procedure to determine their damping factor per unit mass and per unit length. We will also determine the bars eigenfrequencies (for the first eigenmode). The bars will have the core with 10, 15 and 20 mm and the free lengths of: 200, 230, 260, 290, 320 and 350 mm. The eigenfrequencies can be used in a future research to determine the bars stiffness. The stiffness values are important if these type of composite bars are used as frames for concrete forming, because the displacements when the concrete is molded are smaller if the stiffness has high values.

• Periodical: Applied Mechanics and Materials (Volume 801)
• Pages: 182-187
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.801.182
• Online since: October 2015
• Authors: Cosmin Mihai Miriţoiu*, Dumitru Bolcu, Cristian Oliviu Burada, Marius Marinel Stănescu
• Keywords: Carbon-Fiber, Damping Factor, Sandwich Bar, Vibration

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