Effect of Weaving Pattern on the Mechanical Properties of 2D Interwoven Kevlar-Jute Hybrid Laminates

Abstract

Hybrid laminates were produced using epoxy resin and interwoven fibers of kevlar and jute. In this study, different weaving patterns, i.e.,, plain weave, basket weave, twill weave, and satin weave were considered. Mechanical properties like hardness, tensile strength, flexural strength, compressive strength, and impact strength were experimentally measured. The hybrid laminate having the plain weave and basket weave patterns were observed to have equally spaced pockets of matrix element, which facilitated the isotropic distribution of applied load during the testing of the mechanical properties. The twill weave pattern in the reinforcement exhibited augmented mechanical properties as well as superior elasticity. Its elongation percentage was 32%, while the satin weave pattern exhibited only 21.5%. The satin weave pattern revealed microcracks within the matrix, whereas the twill weave pattern exhibited superior bonding between the matrix and the reinforcement fibers. The twill weave pattern showed anisotropic load transfer during the mechanical test. Thus, the applied load was distributed along the warp direction that contained kevlar fibers. Hence, it exhibited the tensile strength of 6.77 GPa, the flexural strength of 3.4 GPa, the compressive strength of 105.6 MPa, an absorbed maximum impact load of 89 J, and shore-D hardness of 72.2, respectively.

Keywords

• hybrid laminate
• plain weave
• basket weave
• twill weave
• satin weave
• mechanical properties