A Simple Method of Measuring Flexural Rigidity of Jute Fibre

摘要

Flexural rigidity of jute fibre bundle have been measured by designing a simple method following the principle of bending of a beam as a cantilever method with the help of a suitably developed apparatus. In the apparatus developed for the purpose, a fibre bundle was mounted on a horizontal platform in such a way that it overhangs, like a cantilever. A vertical load was put at the extreme of the free-end of the fibre bundle. The fibre bundle bends downwards both for its own weight and for the additional load applied at the free-end. The bending rigidity in terms of flexural rigidity was evaluated from the angular deflection of the fibre bundle using an appropriate mathematical expression for mulated for this purpose from standard engineering formulae considering necessary assumptions and conditions applicable for jute fibre bundle. Testing parameters have also been standardized. The efficacy of this method of measuring flexural rigidity of jute fibre was examined from correlation coefficient between flexural rigidity of (raw and differently treated) jute fibres and different structural and property parameters including packing fraction of the yarn samples spun from corresponding raw and differently treated jute fibres.