Study Torsion Capacity of Epoxy -Glass Fiber Composites

Abstract

In this study, torsion test was performed in order to examine the mechanical behaviors of epoxy and an epoxy reinforced by two types of glass fibers (chopped and yarn) composite rod. The stressstrain curves were constituted and examined in order to show the elastic and plastic regions, the yield point was 23.226 o and 34.837 o angle of twist for epoxy and epoxy /fibers respectively which is the same for both chopped and yarn glass fibers epoxy, from this test it was found that the epoxy rod initially yielded first, the cracks propagation in composite rod along the fibers direction, which caused eventually the delimitation of composite chopped and yarn glass fibers from the epoxy matrix. Then the white regions appear in composite rod and finally the fiber breakage and the catastrophic failure took place.Keyword : Angle of torsion, static torque ,chopped and yarn glass fibers.

An Experimental Analysis on the Impact of the Epoxy on the Torsional Behavior of Composite Fiber-Glass

“…Although the presence of AN in FRP demonstrates significant improvement in mechanical properties compared to polypropylene/fiber glass, fiber glass, and carbon/fiber glass reinforced composite, the toughness and strength of the composite decreased as the number of AN layers grew. This hybrid composite class has the potential to be exploited in the industry, notably for the components of automobiles like the vehicle bumpers [9] Although the low elongation fiber of Woven Kenaf improves the composite modulus more in the laminate direction, the high elongation fiber of (PET) polyethylene tereph thalate plays a more significant role in increasing the strength of hybrid composites [10]. Additionally, hybrid composite laminates consisting of six different layers have been investigated.…”