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.

抽象的

混杂层压板是用环氧树脂和芳纶和黄麻交织纤维制成的. 本研究考虑了不同的织造模式, 即平纹、篮纹、斜纹和缎纹. 实验测量了硬度、拉伸强度、弯曲强度、抗压强度和冲击强度等力学性能. 观察到具有平纹和篮纹图案的混合层压板具有等间距的矩阵单元袋, 这有助于在力学性能测试期间实现施加载荷的各向同性分布. 增强体中的斜纹组织表现出增强的力学性能和优异的弹性. 其延伸率为32%, 而缎纹织物仅为21.5%. 缎纹组织显示出基体内的微裂纹, 而斜纹组织显示出基体与增强纤维之间的良好结合. 斜纹组织在力学试验中表现出各向异性的载荷传递. 因此, 施加的载荷沿包含kevlar纤维的经纱方向分布. 因此, 其拉伸强度为6.77 GPa, 弯曲强度为3.4 GPa, 抗压强度为105.6 MPa, 吸收的最大冲击载荷为89 J, 肖氏硬度为72.2.

KEYWORDS:

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

关键词:

• 混合层压板
• 平纹组织
• 篮子编织
• 斜纹组织
• 缎纹组织
• 机械性能

Acknowledgments

The authors wish to acknowledge Vel Tech Rangarajan Dr. Sagunthala R&D Institute of Science and Technology, Avadi, Chennai-600062, Tamil Nadu, India for providing the facilities to carry out the research leading to the submission of the work.

Disclosure statement

No potential conflict of interest was reported by the author(s).