Effect of Sal Wood and Babool Sawdust Fillers on the Mechanical Properties of Snake Grass Fiber-Reinforced Polyester Composites Giridharan Ravichandran, Karuppasamy Ramasamy, K. Manickaraj, Sathish Kalidas, M. JAYAMANI, et al. Bioresources, 2025 The mechanical, moisture absorption, and chemical bonding properties were studied for hybrid polyester composites reinforced with snake grass (SG) fiber and Sal wood (S) and Babool (B) sawdust fillers. Composites were fabricated via compression molding with 60% polyester resin and varying filler-fiber ratios. Mechanical tests showed tensile strength increasing from 38 MPa (S1) to 56 MPa (S4), flexural strength peaking at 85 MPa (S4), and maximum hardness of 84 Shore D (S4). Impact strength reached 6.98 J (S4). Water absorption decreased with higher filler content, with S4 absorbing only 21%. Scanning Electron Microscopy (SEM) revealed improved interfacial bonding in S3 and S4, while S1 showed voids and fiber pull-out. Fourier-transform infrared spectroscopy (FTIR) analysis confirmed enhanced chemical interactions in samples with optimized filler-fiber ratios, particularly in S4, contributing to its superior performance. The filler-fiber composition was optimized to maximize mechanical strength, moisture resistance, and chemical bonding, demonstrating the potential of these sustainable composites for durable, eco-friendly applications.
Vibration Analysis of Graphene Reinforced Hybrid Jute/Basalt Natural Nanocomposite Beam Amrita M, Naga Charan D, Sathish K., Vimal M, Venkatesh B. Journal of Vibration Engineering and Technologies, 2025 Systematic experimental assessment of graphene—enhanced natural fiber hybrid composites for vibration performance is a relatively unexplored domain. The aim is to experimentally investigate the influence of graphene nanoplatelet inclusion, boundary condition and impact position on vibrational behavior of hybrid jute basalt natural fiber reinforced composite beam. Natural frequency, damping factor and mode shapes are evaluated. Seven samples of composite beams were prepared- pure basalt, pure jute, hybrid jute/ basalt and hybrid jute /basalt with graphene nanoplatelets of varying composition 0.2wt. %, 0.4wt.%, 0.6wt.% and 1wt.%. Natural frequency test was performed on all beams experimentally using fast fourier transform (FFT) analyzer at two boundary conditions: clamped- clamped and clamped free condition using moving rover method. Basalt fibre composite showed highest natural frequency and least damping factor and jute fibre composite showed least natural frequency and highest damping factor. Concentration of graphene significantly influenced natural frequency and damping factor. Hybrid jute/basalt composite beam with 0.6wt% graphene showed highest natural frequency and composite with 0.4wt% graphene showed highest damping factor. The hybrid jute-basalt fiber composite exhibited a balanced performance, demonstrating intermediate values of both natural frequency and damping factor—positioning it effectively between its individual constituents in terms of dynamic behavior. The incorporation of graphene significantly influenced the natural frequency and damping properties of hybrid natural composites.
Real-Time Monitoring in Polymer Composites: Internet of Things Integration for Enhanced Performance and Sustainability — A Review Manickaraj Karuppusamy, Sathish Kalidas, Sivasubramanian Palanisamy, K. Nataraj, Rajiv Kumar Nandagopal, et al. Bioresources, 2025 This review article critically examines the integration of Internet of Things (IoT) sensors and wireless technology into polymer composites, highlighting its transformative potential in materials science. The focus is on real-time monitoring of key parameters such as temperature, stress, strain, humidity, and environmental exposure, which are essential for predictive maintenance and performance optimization. This review covers existing research and technological developments in IoT-enabled polymer composites, including sensor technologies, data transmission, cloud-based analysis, and digital twin creation for rapid design optimization and troubleshooting. The scope of this review does not extend to experimental procedures for sensor integration, detailed material property enhancements unrelated to IoT technologies, or the development of new composite materials without IoT integration. Key challenges such as standardization, data security, and system interoperability are discussed, and future research directions are proposed. By defining the scope and boundaries of the discussion, this review provides a comprehensive overview of how IoT integration is advancing the performance, reliability, and sustainability of polymer composites across industries such as aerospace, automotive, and infrastructure.
Advancement in biomechanics for prosthetic design - Review K. Sathish, R S Gokulan, M R Jameel Ahmed, P Goforth Walker, G Vignesvaran Journal of Physics Conference Series, 2025 Prosthetic technology has come a long way over the years, having progressed from rudimentary, mechanical-structure-based models to high-tech biomechanical systems built for high functionality and user comfort. Finite Element Modelling (FEM) is one of the fundamental innovations making this transformation happen; it has improved socket design dramatically by allowing accurate analysis of stress distribution, pressure bearing points, and load bearing efficiency. The use of FEM has enabled improved long-term use of prosthetic devices by reducing discomfort and preventing soft tissue injuries through optimization of socket geometry. The Additional detail concerns the energy efficient foot-ankle systems that utilize energy storage and return to do less work, comfort the user, and enable mobility over varying terrains. FEM, and 3D scanning-based technologies have transformed the socket-design process, allowing for more customization that supports socket efficacy through decreased levels of pain, and improved alignment. Principles such as rehabilitation and training, along with supplying user feedback systems, are important components to help users become independent and confident in their usage of the device and can make a profound difference in the effectiveness of assistive technology. Advances in material science, like lighter alloys or biocompatible polymers, are also perceived to increase prosthetic durability and acceptance. As great as these technological advances are, research is still needed to reduce the cost of these products and the complexity of their use. The review ends with avenues for future work to meet these challenges and provide high-quality, biomechanically compelling prosthetics to wider segments of the population.
