@article{(Open Science Index):https://publications.waset.org/pdf/9997590,
	  title     = {Longitudinal Shear Modulus of Single Aramid, Carbon and Glass Fibres by Torsion Pendulum Tests},
	  author    = {I Prasanna Kumar and  Satya Prakash Kushwaha and  Preetamkumar Mohite and  Sudhir Kamle},
	  country	= {},
	  institution	= {},
	  abstract     = {The longitudinal shear moduli of a single aramid, carbon and glass fibres are measured in the present study. A popularly known concept of freely oscillating torsion pendulum has been used to characterize the torsional modulus. A simple freely oscillating
torsional pendulum setup is designed with two different types of plastic discs: horizontal and vertical, as the known mass of the
pendulum. The time period of the torsional oscillation is measured to determine the torsional rigidity of the fibre. Then the shear
modulus of the fibre is calculated from its torsional rigidity. The mean shear modulus of aramid, carbon and glass fibres  measured are 6.22±0.09, 18.5±0.91, 38.1±3.55 GPa by horizontal disc pendulum and 6.19±0.13, 18.1±1.34 and 39.5±1.83 GPa by vertical disc pendulum, respectively. The results obtained by both pendulums differed by less than 5% and agreed well with the results reported in literature for these three types of fibres. A detailed uncertainty calculations are carried out for the measurements. It is seen that scatter as well as uncertainty (or error) in the measured shear modulus of these fibres is less than 10%. For aramid fibres the effect of gauge length on the shear modulus value is also studied. It is verified that the scatter in measured shear modulus value increases with gauge length and scatter in fibre diameter.
},
	    journal   = {International Journal of Mechanical and Mechatronics Engineering},
	  volume    = {8},
	  number    = {2},
	  year      = {2014},
	  pages     = {423 - 428},
	  ee        = {https://publications.waset.org/pdf/9997590},
	  url   	= {https://publications.waset.org/vol/86},
	  bibsource = {https://publications.waset.org/},
	  issn  	= {eISSN: 1307-6892},
	  publisher = {World Academy of Science, Engineering and Technology},
	  index 	= {Open Science Index 86, 2014},
	}