Strength characterization of caryota urens fibre and aluminium 2024-T3 foil multi-stacking sequenced SiC-toughened epoxy structural composite

This research focused on investigating the mechanical, wear, and fatigue behavior of an epoxy composite toughened with corncob biosilica (CCB) and prickly pear fiber (PPF). The primary aim of this research was to improve the load bearing effect of high‐brittle matrix by adding eco‐friendly fiber and particle. The surface treatment on the fiber and particle was done using an amino silane, 3‐Aminopropyltrimethoxysilane (APTMS). The natural fiber composites are prepared by hand layup process and characterized in accordance with ASTM standards. The experimental results indicated that the addition of fiber and particles increased the tensile and flexural strength up to 61% and 50%, respectively. Similarly, it is noted that the biosilica particles improved the bonding and reduced the rate of wear of composites, as well as lowered the stress intensity factor. A lowest wear rate of 0.037 and COF of 0.38 were noted for EFC2 composite designation. The morphological study of the fractured composites revealed improved fiber adhesion to the matrix. This reduced intensity of stress, increased wear resistance and higher fatigue life ensures the composite's application in structural and industrial applications.

“…The lowered stress intensity factor further reduces the plastic deformation rates of the composite under load. [ 24 ]…”

Section: Resultsmentioning

confidence: 99%

Section: Mechanical Propertiesmentioning

confidence: 96%

Mechanical, wear and fatigue behavior of silane‐treated corncob biosilica toughened epoxy resin composite reinforced with prickly pear short fibers

Kumar¹,

Manimaran

Anbukarasi

2022

“…This reduction is attributed to the agglomeration of chitosan particles in high denser epoxy matrix medium. [ 20 ] But the surface‐treated chitosan dispersed EMC 1 , EMC 2 and EMC 3 composite designation gives improved tensile, flexural and impact values. The improved values of 133, 141, 148 MPa and 148, 155, 163 MPa and 6.2, 6.5, 6.9 J was observed for composites EMC 1 , EMC 2 and EMC 3 in tensile, flexural and impact strength.…”

Section: Resultsmentioning

confidence: 99%

Mechanical and delamination studies on siliconized chitosan and morinda‐citrifolia natural fiber‐reinforced epoxy composite in drilling

Manikandan¹,

Jaiganesh²,

Ravi

et al. 2020

In this research, the effect of siliconized chitosan biopolymeric particles and morinda fiber in epoxy composite and their mechanical and machining behavior were studied. The primary aim of this research was to investigate how the silane‐treatment influences the surfaces of natural biopolymeric particle and fiber in epoxy composite and to study the mechanical and machining behavior. The chitosan and morinda fibers were surface‐treated using an amino silane 3‐Aminopropyltrimethoxylane (APTMS) via aqueous solution method. The composites were prepared using the hand lay‐up method followed by post‐curing at 120οC. The mechanical results showed that the silane surface‐treated chitosan and morinda natural fiber‐reinforced epoxy composite gives improved tensile, flexural and impact results of 148 MPa, 163Mpa and 6.9 J respectively. The inter‐laminar shear strength of silane‐treated morinda fiber gave the highest value of 28 MPa. Similarly, in the drilling process, the surface‐treated reinforcements showed the highest adhesion with matrix without any delamination. The drilled hole dimension stability at the top and the bottom surface was significantly high for silane‐treated epoxy composites. The scanning electron microscope images revealed high adhesion of fiber and uniform dispersion of chitosan particle in the epoxy matrix. Hence, this study confirms that silane surface‐treatment is an essential process while making high‐performance natural composites for various engineering applications.

“…The presence of a hard hemi-cellulosic component in the novel C. urens fiber is credited with this enhancement. Antony et al [8] explored the effect of multi-stacking sequenced form of C. urens fiber with silane surface modification and aluminium 2024-T3 foil. The author came to the conclusion that combining C. urens fiber with aluminium 2024-T3 improved the durability of the composite through effective load sharing.…”

Section: Introductionmentioning

confidence: 99%

Mechanical, dielectric, and hydrophobicity behavior of coconut shell biochar toughened Caryota urens natural fiber reinforced epoxy composite

Jayabalakrishnan¹,

Prabhu²,

Iqbal

et al. 2021

High toughness epoxy bio-composites were prepared using Caryota urens fiber and biochar particle for light weight and low cost engineering applications.The main aim of this research was to study the effect of adding biochar along with C. urens fiber in epoxy resin composite and its properties. The biochar used in this present study was prepared from coconut shell using pyrolysis process. The composites prepared with 5 vol% of biochar gives highest tensile strength and modulus of 172 MPa and 6.7 GPa. Similarly, the biochar of 7 vol% in epoxy resin reduced the wear volume to the greater extend. Moreover, a highest dielectric constant and loss factor of 6.2, 1.6, and a thermal conductivity of 0.33 W/mK with high hydrophobic contact angle of 70 was observed for composite made using 7 vol% of biochar. These improved dielectric, mechanical, barrier and tribological properties composite could be used as microwave shielding material in electronic gadgets, signal processing units and other telecommunication devices as shielding material with good mechanical properties required.