Mechanical properties, surface treatments, and applications of jute fiber reinforced composites—A review

Delamination due to interfacial debonding between metal/composite is identified as a potential failure mechanism of fiber metal laminates (FML). In the present study, titanium based fiber metal laminate (Ti‐FML) were fabricated using different wt% of nanoclay modified epoxy as adhesive. Kevlar/jute fibers bidirectionally woven mat was used to prepare the composite layer in the laminate. The laminates produced using compression molding techniques were studied for tensile, flexural, impact load bearing capacity and adhesive strength based on lap shear and peel test following ASTM standards. Lap shear adhesive strength of nanoclay modified epoxy was enhanced to 27 MPa and interlaminar peel strength was increased to 16.8 N/mm in the laminates, when the amount of nanoclay was increased to 8 wt%. Matrix crack deflection and crack bridging due to the presence of nanoclay was identified as potential mechanism for increasing the adhesive strength of epoxy. Enhanced adhesive strength resulted in improved mechanical characteristics of Ti‐FML, exhibiting notable increases in tensile load bearing capacity at 15.5 kN, flexural peak load at 0.36 kN, and bending strength at 890 MPa, achieved with a 7 wt% increase in nanoclay content. Fiber breakage and plastic deformation of metal combinedly developed the failure deformation, load bearing and energy absorption capacity of the laminate. Hybridization of fibers kevlar/jute played a significant role in enhancing the energy absorption capacity of laminates. The developed material can find applications in aerospace structures, automotive components, and marine environments where superior mechanical performance and durability are essential.Highlights Nanoclay‐modified titanium‐based FMLs with kevlar/jute hybrid fiber mats prepared. The adhesive strength of nanoclay‐modified epoxy increased due to crack deflection and bridging, enhancing the load‐bearing capacity of the titanium FML. Improved adhesive strength controlled delamination failure in tensile and flexural tests. The laminate's impact energy absorption capacity was enhanced by nanoclay, hybrid kevlar/jute fiber composite, and titanium ductility.

Adhesion strength and mechanical properties of nanoclay modified hybrid kevlar/jute‐epoxy fiber metal laminate

Naveen,

Kamaraj,

Ponnarengan

2024

Mechanical properties of basalt/jute fiber composites to improve the phenomenon of drawing delamination

Cao,

He,

Zhang

et al. 2024

In recent years, natural fibers have been commonly used to reinforce various polymers, resulting in composites with excellent mechanical properties. To address the challenge of delamination and significant fiber pull‐out in inter‐laminar hybrid composites during stretching, this study focused on preparing intra‐laminar hybrid textile composites using basalt fibers (BFs) and jute fibers (JFs) as raw materials. Moreover, the mechanical properties of BF/JF intra‐layer blended fabric composites were investigated. The prepared composites underwent tensile, flexural, impact, and dynamic mechanical analysis (DMA). The results indicated that intra‐laminar blended composites demonstrated superior mechanical properties compared to inter‐laminar blended fabric composites. The DMA results revealed that the intra‐laminar blended composites featured a high peak loss factor. Morphological analysis indicated enhanced stress transfer from fiber‐to‐fiber and fiber‐to‐matrix in the intra‐laminar blended composites.Highlights Fiber blending can expand the application areas of natural fibers. Fiber blending can reduce interlayer damage. Intra‐layer blending differs from interlayer hybrid composites. Strong bonding between fibers facilitates effective stress transfer. “Green” composites exhibit exceptional mechanical properties.

Ramie fiber and its composites: A review

Shakir,

Singh

2024

Nowadays, natural fibers are in greater demand as compared to synthetic fibers because of their various benefits, such as affordability, lightweight, biodegradability, and environmental friendliness. Ramie is one such natural fiber that is gaining importance owing to its outstanding mechanical properties. This article examines the literature on ramie fibers as a reinforcing material, with the main emphasis on the recent decade (2013–2023). Various studies on surface treatments to improve the bonding and properties of ramie fiber‐reinforced composites (RFRCs) are discussed. The tribological and mechanical properties of several RFRCs are explored. The applications of ramie‐based composites in several industrial areas are also highlighted. The findings of this review indicate that a combination of alkali and silane surface treatment greatly improves the mechanical and thermal behavior of RFRCs, whereas treating ramie fibers with ammonium polyphosphate enhances their flame retardant properties. Furthermore, the lack of literature on the characterization of RFRCs with different filler materials, such as rice husk, eggshell powder, waste tire particles, and fishbone powder needs to be studied. The insufficient studies on the tribological behavior of RFRCs, particularly in thermoplastic polymers, highlight research gaps that demand attention from researchers to understand their potential for wear‐resistant applications.Highlights Surface treatments enhance ramie fiber‐polymer bonding. Alkali + silane treatment boosts composite rigidity. Ammonium polyphosphate improves flame retardancy. Hybrid ramie/epoxy with synthetic fibers shows strong mechanical properties. Research needed on RFRCs with LDPE, PC, and various filler materials.