Adding different reinforcements to the polymer composite is gaining more importance in the manufacturing industries because of their variation in mechanical properties. To satisfy modern industrial requirements, the mono-fiber polymer composites are substituted by hybrid composites in civil and automotive applications. The present work is to develop and investigate the hybrid composite behavior reinforced with AISI 304 (500 µm) wire mesh and jute fiber with epoxy LY556 resin. To analyze the mechanical properties of hybrid composites, two different orientations (45° and 90°) of wire mesh are selected and stacked with jute fiber by hand lay-up method. The wire mesh composite or hybrid composite is subjected to mechanical characterization like tensile, flexural, impact, and interlaminar. Subsequently, the viscoelastic behavior of the wire mesh composite is observed in terms of storage modulus (E′), loss modulus (E″), and damping factor (tan δ) by the dynamic mechanical analyzer (DMS 6100). The fractured surface microstructure of the wire mesh composite is analyzed by scanning electron microscope. The 45° oriented wire mesh composite sample shows better mechanical properties in ultimate tensile strength (20.55 MPa), flexural strength (0.145 kN), percentage of elongation (2.83%), and interlaminar strength (0.120 kN). At the transition region, the peak energy absorption of 0.622 is observed in the 90° oriented wire mesh composite sample at 0.5 Hz frequency.

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This work was investigated that the effect of aluminium (Al) and copper (Cu) wire mesh embedded as a structural reinforcement on jute epoxy hybrid composite. The hybrid composites were prepared by epoxy LY556 with HY951 hardener as a matrix; jute and wire mesh as reinforcements using the compression molding technique. In hybrid composites, the aluminium wire mesh (AWM) and copper wire mesh (CWM) were embedded as 45° & 90° orientation to the jute fiber (AWM45/90 and CWM45/90). The performance of the fabricated hybrid composites was studied by conducting various mechanical, thermal, and dynamic characterizations. The test results were shown that the tensile strength of the fabricated composite was improved by 14.12% in AWM45 and 9.28% in CWM45 compared to AWM90 and CWM90 composites respectively. The TGA result expressed that the thermal stability of the CWM45 composite was enhanced with the residue of 18.33% at 800 °C due to the influence of Cu-wire mesh. In the transition region, the 45° oriented wire mesh improved the loss modulus (E″) peaks about 31.74% in CWM and 11.49% in AWM composite to 90° oriented mesh.

This paper presents an investigation report for an electronically controlled pneumatic suspension system. The performance improvement in the passenger's comfort and attitude behaviour are evaluated for a proportional integral derivative (PID) controlled pneumatic suspension design. An appropriate mathematical model is developed for a single wheel suspension with the passenger seat system. The simulation is accomplished through LABVIEW and lab-based experimental analysis is conducted. Based on simulation and experimental values, the enhanced performance is shown through comparative results. The proposed system with the PID control improves the ride comfort and provides better road-holding characteristics, as compared to the passive suspension system.

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Composite materials are revolutionizing to realize the demanding needs of aeronautical, automobile, construction, chemical, and biomedical applications. The natural fiber composite is chosen as one of the best choices among composites due to its sustainable goods like eco-friendly nature, better properties and Greenhouse gas (GHG) balance. Furthermore, the bast fiber composites are identified as promising industrial composites based on the availability, strength-to-weight ratio, manufacturing ease, and economics for commercialization. However, product quality and production volume significantly influence commercial adoption of the bast fiber composites. Especially the product quality primarily suffer due to climatic conditions, damage while harvesting, extraction method, retting issues, and extraction location. Consequently, this review aims to provide an overview of the bast fibers & their composites, properties enhancement techniques, overall mechanical behaviours and thermal stability with suitable applications.

Recently, fiber-based polymer composites have been subjected to direct and indirect dynamic loads in various applications. However, the dynamic behavior of the fiber composites is crucially influenced due to excitation frequency, temperature, fiber length, fiber loading, and other geometrical constraints. The effectiveness of viscoelastic property on fiber composite ensures reliability and minimizes the effects of dynamic loading in structural applications. Limited reviews have reported the viscoelastic performance of natural fiber composite through DMA. Notably, the previous review articles lagged in addressing the performance affecting parameters such as frequency, temperature, fiber type, fiber loading, filler type, etc.,. This review has two parts: the viscoelastic performance of mono and synthetic natural fiber composites. The present review aims to express a broad understanding of natural fiber polymer composites, DMA analysis, and viscoelastic performance. Also, this study detailed DMA performance affecting factors. Comprehensively, the reviewed works revealed that Visco elastic performance of mono (Matrix-natural) /synthetic-natural fiber composites is extensively influenced by excitation frequency, temperature, length of the fiber, fiber loading, and type/size of filler particles. Further, a boundless opportunity is available to enhance the DMA performance fiber reinforced composites.

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