Investigation of Modal parameters of Carbon & Kevlar Fiber composite Laminates using FFT Analyzer
K Mahesh Dutt1, H.K.Shivanand2
1K Mahesh Dutt, Department of Mechanical Engineering, U.V.C.E, Bangalore University, Bangalore, India.
2Dr. H. K. Shivanand, Department of Mechanical Engineering, U. V. C. E, Bangalore University, Bangalore, India.
Manuscript received on may 12, 2012. | Revised Manuscript received on June 07, 2012. | Manuscript published on June 30, 2012. | PP: 132-134 | Volume-1 Issue-5, June 2012 | Retrieval Number: E0452061512/2012©BEIESP

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Abstract: Composite Materials are known for their excellent combinations of High Structural Stiffness & Low Weight. They allow the Design Engineer to tailor the material in order to achieve the desired performance requirements because of their anisotropic properties. Therefore, it has become very necessary for Engineers to develop tools which allow the Design Engineer to obtain Optimized designs considering the structural requirements. Based on these requirements, this work considers the Dynamic behavior of Components manufactured from Fiber-reinforced Composite Materials. Towards this, Specimens of Carbon & Kevlar fibers were manufactured using the Hand Lay-up process followed by cutting to the required dimension. Experimental Dynamic Tests were carried out using specimens of different thickness. From the results obtained, the influence of the fiber orientations as well as the stacking sequences on the modal parameters like Natural frequency, Damping etc., were investigated. Also, Validation of the results of Theoretical and from the FEA was done. Good Agreement was obtained between the finite – element predictions and experimentalresults.
Keywords: Composite Materials, FEA, Modal Analysis, Fibers.