Abstract
The present study focuses on the mechanical and erosive wear properties of functionally-graded polymer materials (FGPMs) and functionally-graded hybrid composites. Polyester resin is used as a polymeric matrix, while titanium dioxide (TiO2) and aluminum (Al) as particles and glass fiber (GG) as fiber reinforcements are used in the composites. The samples are fabricated through the lay-up lamination technique. Initially, four-layered FGPMs were fabricated using TiO2 and Al particles individually in weight percentages varying from 2 to 8% (by wt). Then, four-layered hybrid functionally-graded composites were prepared using 2–4% (by wt) Al and TiO2 along with two layers of glass fibers. A comparison among functionally-graded materials and functionally-graded hybrid materials in terms of mechanical strength (tensile, flexural and interlaminar) and erosion behavior is evaluated on a universal testing machine and air jet erosion testing apparatus, respectively. The improved tensile strength is shown by aluminum-based functionally-graded and hybrid functionally-graded composites owing to their greater ductility. Nevertheless, titanium dioxide-based functional- graded and hybrid functional-graded composites exhibited greater flexural strength due to their high hardness. From the erosion results, Al and TiO2 functional-graded composites revealed semi-ductile and semi-brittle behavior, respectively. Moreover, hybrid functional composites display altered material behavior at their extreme layers. Two layers of glass fiber (GG) with Al (2.4% by wt) filler functional composite achieved 1.91% maximum tensile strength compared to Al (2, 4, 6, 8% by wt) filler composite.
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The authors would like to thank the chairperson and Principal of KITS and Director of NIT-Warangal, faculty members and laboratory staff of Mechanical Engineering Departments for their support in the completion of this work.
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Ojha, S., Raghavendra, G., Prudhvidhar, K. et al. A study on the mechanical and erosion wear of functionally-layered polymer composites and hybrid functionally-layered polymer composites. Iran Polym J 33, 647–657 (2024). https://doi.org/10.1007/s13726-024-01282-0
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DOI: https://doi.org/10.1007/s13726-024-01282-0