Viscoelastic behavior of aloevera/hemp/flax sandwich laminate composite reinforced with BaSO₄: Dynamic mechanical analysis

Abstract

In the structural applications, the composite material employs a significant contribution in various industrial applications. In this paper, the experimental nonlinear viscoelastic behavior, tensile and flexural strength properties are analyzed in aloevera /hemp/flax natural fiber sandwich laminate composites (NSLC) with the addition of barium sulfate filler. The dynamic mechanical properties such as storage modulus (E′), loss modulus (E″) and damping factor (Tan δ) are analyzed using dynamic mechanical analyzer as a function of temperature and frequency. The homogeneity, crosslink between the fiber and the matrix of the natural fiber sandwich laminate composite samples are analyzed by a cole-cole plot and complex modulus models. The improvement in flexural strength is observed in the NSLC4 sample (138.34 N/mm2), but the addition of barium sulfate affects the tensile strength (28.8 N/mm2). From the dynamic mechanical analyzer, it is observed that the storage modulus (E′) at the glassy region in the NSLC2 sample is 19.9% whereas in the NSLC4 sample it is 15.57%. Further, the addition of barium sulfate filler enhances the loss modulus (E″) by 28% in NSLC4 sample. The NSLC4 sample shows the better homogeneity in the cole-cole plot and high crosslink between the fiber and the matrix is observed from the complex modulus.

Investigation of the Acoustic and Mechanical Properties of Homogenous and Hybrid Jute and Luffa Bio Composites

“…As mentioned before, there are various methods for mechanical characterization of materials including biomaterials (Arulmurugan et al 2019a(Arulmurugan et al , 2019b(Arulmurugan et al , 2020Koruk, Dreyer, and Singh 2014;Prabu, Rajamurugan, and Thirumurugan 2019). In this study, the mechanical properties of the composite plates are determined via modal tests.…”

“…Various methods have been used for mechanical characterization of biomaterials in the literature (Arulmurugan et al 2019a(Arulmurugan et al , 2019b(Arulmurugan et al , 2020Koruk and Genc 2019;Prabu, Rajamurugan, and Thirumurugan 2019). In addition to classical characterization methods such as tensile testing, experimental modal analysis can also be used for the identification of damping and elastic properties of materials (Koruk and Genc 2019).…”

Dynamic mechanical characteristics of jute fiber and 304 wire mesh reinforced epoxy composite

“…The 45° oriented WMC has a wide curve in the transition and rubber region due to the reinforcement between the fiber, matrix, and wire mesh (Figures 10 to 12). The 45° oriented WMC shows higher loss modulus values in rubber region [38].…”

“…The fiber matrix epoxy composites are having elastic property and the rise in temperature affects the viscoelastic behavior. The energy dissipation is maximum in the transition region and it is represented by loss modulus (E″) [38].…”

Drilling and mechanical performance analysis on flax-sisal hybrid composite embedded with perforated aluminum foil

“…The flexural strength of the composite is measured following ASTM D790. 20 The mechanical property of flax is good as glass fiber. In the hybrid composite, the mechanical strength of composites increased when the flax adds as the reinforcement in the composite.…”