ANALYSIS OF POLYPROPYLENE FIBRE UNDER TENSILE TEST CONDITION

The emergence of cracks over the course of the material lifetime can be blamed for the premature failure of
polymers and its composites. When a material develops cracks, the material may ultimately fail catastrophically.
Cracks must be located and repaired. The performance, dependability, cost-effectiveness, and safety of polymer
constructions are to be ensured. The most recent technique for finding cracks in polypropylene structures, with an
emphasis on where it is spread. The failure mechanism is still a topic of ongoing debate in the scientific community.
The three-point bending test method is used to look into the polypropylene fracture mechanism. Three-point bending
test results show that there is a significant damage zone in front of the notch. An extensional flow mixture (EFM)
system was researched in order to achieve better distributive and dispersive mixing. The EFM compounding process
demonstrated lower melt viscosities at high shear rates when compared to the other composites. The elastoplastic
fracture mechanics technique will be applied because the region near the fracture tip has a sizable plastic zone.