Rahmat Doni Widodo, Muhammad Irfan Nuryanta, Muhammad Hilman Gumelar Syafei, Shohihatur Rohman, Ahmad Mujaki, Febri Budi Darsono, Muhammad Akhsin Muflikhun
The study assesses the mechanical performance of composites that contain a mixture of glass fiber (G) and waste flex banners (F) at different proportions and orientations relative to the polyester matrix testing. The mechanical properties of the composite were investigated through impact strength, flexural strength and elastic modulus testing of the samples, while researchers studied fiber composition and orientation effects. Sample C7 (0⁰/flex/0⁰/0⁰/flex/0⁰) represented the optimum impact strength outcome, where it achieved 19.2 J energy absorption and 0.406 J/mm² impact strength range because appropriate fiber alignment enhances material impact performance. C7 also produced the strong flexural strength of 431.199 MPa and elastic modulus of 21.638 GPa, establishing it as the premier composite for bending capacity. C10 (Polyester) sample demonstrates inferior flexural strength (81.99 MPa) together with the lowest elastic modulus (4.382 GPa) because using plain matrix material does not supply adequate structural integrity. Fiber type and its arrangement pattern control how well a composite material performs as a result of this research. The research enables quantitative assessments for optimal composite material designs that exhibit exceptional bending strength, stiffness, and impact tolerance. This significant increase confirms the potential of using flex banner waste as a reinforcement in environmentally friendly composite materials. © 2025 Jordan Journal of Mechanical and Industrial Engineering. All rights reserved
Department of Mechanical Engineering, Universitas Negeri Semarang, Semarang, Indonesia; Department of Mechanical and Industrial Engineering, Faculty of Engineering, Universitas Gadjah Mada, Jl. Grafika No. 2, Yogyakarta, 55281, Indonesia
