Comparative Study of Damping in Pristine, Steel, and Shape Memory Alloy Hybrid Glass Fiber Reinforced Plastic Composite Beams of Equivalent Stiffness

  • Amit Kumar Gupta Composite Research Centre, DRDO-Research & Development Establishment (Engineers), Pune - 411 015, India
  • R. Velmurugan Department of Aerospace Engineering, Indian Institute of Technology, Madras, Chennai - 600 036, India
  • Makarand Joshi Composite Research Centre, DRDO-Research & Development Establishment (Engineers), Pune - 411 015, India
Keywords: Shape memory alloy, Damping ratio, Glass fiber reinforced plastic, Vibration, Flexural stiffness

Abstract

Several efforts were made over the years to control vibration of structural components made of composite materials. This paper consists of study on effect of using shape memory alloy (SMA) to increase the damping of glass fiber reinforced plastic (GFRP) composites. A comparative study between SMA and steel was made as reinforcement material in GFRP composites to enhance damping. Dimensions of each beam were calculated such that all the beams i.e. pristine GFRP beam, GFRP beam embedded with steel wires and GFRP beam embedded with SMA wires have same flexural stiffness and first mode of frequency of vibration. Damping ratio was measured experimentally through logarithmic decay method. Through experiments damping ratio obtained for SMA hybrid composite beam was found to be higher as compared to the pristine and steel hybrid GFRP composite beams.

 

Author Biographies

Amit Kumar Gupta, Composite Research Centre, DRDO-Research & Development Establishment (Engineers), Pune - 411 015, India

Mr Amit Kumar Gupta, is currently pursuing his PhD from Indian Institute of Technology, Madras, Chennai. Presently working as a Scientist in Research & Development Establishment (Engineers), Pune. His research interest includes composite structures, adaptive structures, smart materials, FEanalysis.

In the present study, his contributions are in the design of the experiments, implementation of experiments and he wrote the manuscript.

R. Velmurugan, Department of Aerospace Engineering, Indian Institute of Technology, Madras, Chennai - 600 036, India

Dr R. Velmurugan, presently working as a professor in Department of Aerospace Engineering at Indian Institute of Technology, Madras, Chennai. His research interest includes impact mechanics, composite materials, FEanalysis, nanomaterials.

In the current study, he has guided at various design and experimental stage and provided his inputs for improvement and reviewed the manuscript.

Makarand Joshi, Composite Research Centre, DRDO-Research & Development Establishment (Engineers), Pune - 411 015, India

Dr Makarand Joshi, presently working as a Scientist in Research & Development Establishment (Engineers), Pune. His research interest includes composite structures, FEanalysis, structural health monitoring, MEMS.

In the current study, he has guided in the GFRP material characterisation and fabrication of hybrid beams and reviewed the manuscript.

Published
2017-12-18
How to Cite
Gupta, A., Velmurugan, R., & Joshi, M. (2017). Comparative Study of Damping in Pristine, Steel, and Shape Memory Alloy Hybrid Glass Fiber Reinforced Plastic Composite Beams of Equivalent Stiffness. Defence Science Journal, 68(1), 91-97. https://doi.org/10.14429/dsj.68.11793
Section
Commemorative Issue - DRDO