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Journal of Polymer & Composites Review Article Special issue Open Access

Experimental and Numerical Studies on Radial Tensile Strength of Composite Rotor

  1. Gopi Erulan Department of Mechanical Engineering, Indian Institute of Information Technology Design and Manufacturing Kancheepuram, Chennai
  2. Gowthaman Swaminathan Department of Mechanical Engineering, Indian Institute of Information Technology Design and Manufacturing Kancheepuram, Chennai

Abstract

This paper describes the experimental and numerical studies on the radial tensile strength (RTS) of composite rotor. Carbon/epoxy composite rotors were fabricated using a filament winding process and their radial tensile strength was determined by diametric tensile testing of composite C-rings. The radial tensile strength of the composite rotor was measured as ~ 22 MPa and the failure was found to occur circumferentially symmetric about the horizontal plane of the C-ring. It also occurred at the same radial positions on both the front and back axial faces of the sample. Unidirectional carbon/epoxy composite panels were also fabricated using a flat mandrel in the filament winding process and their tensile properties were determined. Based on the experimental results and by applying the Rule of Mixtures, the inherent moduli of the composite rotor were determined. Then, numerical analysis was performed to evaluate and verify the RTS of the composite rotor. The studies showed that the RTS from both the experiments and numerical analysis matched well. Also, in numerical analysis, the interlaminar shear stress was negligible and this implied that the C-ring failed purely by radial stress. It was also observed that the maximum radial tensile stress occurred at the mid-region of the radial thickness, and this also matched well with the experiments.

Keywords

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