Investigation of mechanical properties and free vibration behavior of graphene/basalt nano filler banana/sisal hybrid composite

Abstract

This research work addresses the influence of graphene and basalt filler on mechanical properties and free vibration behavior of banana/sisal hybrid composite. Banana/sisal hybrid composites were prepared with three weight percentage (wt.%), 6 wt.% of graphene, and basalt filler by a compression molding process. The improvement in tensile strength of 24.8% and 30% was noticed for the basalt (6 wt.%) and graphene (6 wt.%) filler addition, respectively. Comparing with basalt addition, graphene addition provides an 1.5 times improvement in flexural strength. The tensile fractography was also carried out and studied the interfacial bonding of the composite. From the morphology, it was observed that there was a good interfacial adhesion between the fiber and the matrix which enhance the mechanical property of the hybrid composite. The free vibrational behavior of the hybrid composite has also been analyzed. The modal analysis shows the enhanced natural frequencies and modal damping for the addition of 6 wt.% of graphene filler in the hybrid composite.

Effect of fibre treatment and moisture content on the vibration and acoustic properties of the basalt/hemp hybrid composites

“…This demonstrates unequivocally how weight gain and stiffness loss lead to an overall improvement in damping ratio for all the specimens exposed to a moist environment. Similar kind of observations reported in [18,[22][23][24] 3.4. Acoustic characterisation Sound absorption tests were executed using an Impedance tube, encompassing frequencies from 63 Hz to 6300 Hz.…”

Effect of rice husk on the mechanical characteristics of abaca/jute hybrid composites

“…Fourier transform‐infrared spectroscopy spectra of rice pure husk shows the peaks at 3343 cm −1 and 3098 cm −1 (−O−H groups), 2920 cm −1 and 2743 cm −1 (C−H groups), 1641 cm −1 (C=O groups of aldehyde and ketone groups), 1531 (C=C aromatic stretching, 1291 cm −1 (aromatic C−H stretching) and 798 cm −1 Si symmetrical stretching, Figure 8 [28]. Fourier transform‐infrared spectroscopy spectra of S1 , S2 , and S3 show the peak sat 3733 cm −1 and 2978 cm −1 (−O−H groups), 2978 cm −1 (C−H groups), 1590 cm −1 (C=O groups of aldehyde and ketone groups) [32], 1531 (C=C aromatic stretching, 1289 cm −1 (aromatic C−H stretching) and 881 cm −1 Si symmetrical stretching, Figure 9 [28].…”

Investigating the Mechanical and Physical Enhancements of Silk-sisal Hybrid Composites Through Granite-nano-filler Integration: Synergizing Strength, Damping, and Form

“…Highlighted in Fig. 5(b) was the selected peak with a constant time bound for all the samples based on the above-said equation (Kuppuraj and Angamuthu, 2022). The damping ratio was calculated from the selected two successive peaks and also to reduce the uncertainty, the average value was obtained from the three trails, details are tabulated in Table 2.…”

“…7 and 8. Most of the researchers studied interfacial and the compatibility behavior between sisal/ banana and epoxy resin (Sanjeevi et al, 2021) and (Kuppuraj and Angamuthu, 2022). They reported better interfacial bonding in silk-epoxy/silk-epoxy composites than in banana-epoxy composites (Akash, Avinash and Ramachandra, 2018).…”

“…Graphene-basalt nano-filler on the banana-sisal composite structure was studied to address the mechanical and vibration behavior for various engineering applications (Kuppuraj and Angamuthu, 2022). The research outcome was graphene addition gives 1.5 times higher flexural strength than basalt.…”