Effect of flax fiber orientation in carbon-flax fiber composite on tensile and visco elastic behavior

This paper deals with the effect of Flax fiber orientations on the tensile and viscoelastic response of Carbon/Flax hybrid composite. The composite laminates were prepared by varying flax fiber orientations of [0 & DEG;(4F)/0 & DEG;(1C)](1), [+30 & DEG;(2F)/0 & DEG;(1C)/-30 & DEG;(2F)](1,) [+45 & DEG;(2F)/0 & DEG;(1C)/-45 & DEG;(2F)](1,) [+60 & DEG;(2F)/0 & DEG;(1C)/-60 & DEG;(2F)](1,) and [+75 & DEG;(2F)/0 & DEG;(1C)/-75 & DEG;(2F)](1) using the Hot press compression molding technique. The tensile and DMA (Dynamic Mechanical Analyzer) tests have been done for evaluating strength, strain to failure, toughness and storage and loss modulus, and also the damping factor of the laminates. The maximum tensile strength of 262 MPa was observed for 0-Degree oriented Flax fiber Carbon epoxy laminates. However, a decrease in tensile strength was noticed as the Flax fiber orientation increased from 0-Degree to 75-Degree. The maximum strain of 7.5% was induced in the 30-Degree Flax fiber carbon composite. Additionally, it was noticed that the rotation of fibers during load applied is the main cause for inducing additional strain to failure of Flax fibers. Changes in the storage modulus, loss modulus, and, damping factor were also observed for different flax fiber orientations.

Automated summary

This paper investigates the influence of Flax fiber orientations on the tensile and viscoelastic response of Carbon/Flax hybrid composite. The composite laminates with different fiber orientations were prepared and tested for strength, strain, toughness, storage modulus, loss modulus, and damping factor. The results show that the maximum tensile strength is observed in the 0-Degree oriented Flax fiber carbon epoxy laminates, while the strain increases with 30-Degree orientation. Additionally, changes in storage modulus, loss modulus, and damping factor are observed for different flax fiber orientations.