ORIGINAL RESEARCH ARTICLE | May 29, 2024
Coupling Strength and Synergy: Exploring the Mechanical Properties of Epoxy Hybrid Composites with S-Glass and Basalt Fibers
Sandeep. B, Dr. H.N Divakar, Dr. Keerthiprasad K S
Page no 45-59 |
DOI: 10.36348/sijcms.2024.v07i05.001
This research investigation centers on assessing the mechanical properties of hybrid composites formed by integrating composite fibers in woven mat form into a matrix element, employing diverse stacking sequences of symmetrical laminates. Specifically, the objective of this research is to experimentally evaluate the mechanical characteristics, including density, hardness, impact resistance, flexural strength, tensile strength, and interlaminar shear strength (ILSS) of S-glass and Basalt fiber epoxy hybrid composites, followed the procedures outlined as per ASTM standards. The laminates were manufactured using a combination of hand lay-up and compression molding techniques, employing four distinct stacking sequences. The mechanical characteristics of these hybrid composites were subsequently compared to those of pure composite counterparts. The mechanical robustness of the resultant composites was systematically evaluated. Experimental findings revealed that the hybrid composite with a stacking sequence of 2/2 B-S-E-C exhibited the highest tensile strength and flexural strength, measuring 330.5 MPa and 367.53 MPa, respectively. Furthermore, this composite demonstrated elevated density and Shore hardness, registering a value of 90. However, it is noteworthy that the impact properties and ILSS of the pure B-E-C composite were superior, boasting a Charpy impact strength of 98.85 KJ/m2, Izod impact strength of 1225.80 J/m, and ILSS of 38.10 MPa. To gain insights into the fracture morphology of the hybrid composites during testing, Scanning Electron Microscope (SEM) analysis was conducted. SEM images revealed that the hybrid composite with a 2/2 B-S-E-C stacking sequence exhibited fiber/matrix and its interfacial interactions upon their failure, mainly focusing its fractured surface in comparison to other hybrid composite configurations. Overall, the results underscore a significant enhancement in mechanical properties when hybrid composites are configured optimally.