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<p>The rising demand for sustainable Engineering materials and environmental impact of industrial waste management need the creation of eco-friendly composite systems with optimal mechanical performance. This work created hybrid epoxy composites utilizing Moringa oleifera natural fiber as reinforcement and waste fly ash (FA) as a particulate filler to tackle material sustainability and waste valorization issues. Four composite laminates, each with a consistent fiber loading of 30 wt% were produced with different fly ash levels of 0, 5, 10, and 15 wt% utilizing a straightforward hand lay-up technique followed by curing at ambient temperature. The composites were analyzed by density, water absorption, microstructural examination, X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), and mechanical testing including tensile, flexural, inter-laminar shear, impact, and micro-hardness assessments. The findings indicated that augmenting fly ash content resulted in a density increase from 1142.8 to 1381&#xa0;kg/m³ and a void fraction rise from 1.65% to 4.02%, whereas tensile and flexural strengths diminished by around 23% (from 58.2 to 44.78&#xa0;MPa) and 8% (to 81.01&#xa0;MPa), respectively. In contrast, notable enhancements were noted in inter-laminar shear strength (about 30%, attaining 4.876&#xa0;MPa), impact strength (from 6.12 to 22.45&#xa0;J/cm²), and micro-hardness (up to a 62% increase), validating efficient stress transmission and filler reinforcement. The findings indicate that fly ash-filled Moringa oleifera–epoxy composites provide an advantageous equilibrium between sustainability and functional performance, rendering them appropriate for lightweight, impact-resistant, and wear-sensitive applications, including automotive interiors, domestic components, and semi-structural panels.</p>

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Development and characterization of fly ash-modified Moringa oleifera fiber epoxy composites for sustainable engineering applications

  • 期刊论文

  • 发表日期：

    2026年4月18日

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  • Nischal P. Mungle,
  • Venkat Namdev Ghodke,
  • D. Selvapandian,
  • Rajasekaran Saminathan,
  • P. Satishkumar,
  • G. Rakesh,
  • Yuvashiga K

摘要

The rising demand for sustainable Engineering materials and environmental impact of industrial waste management need the creation of eco-friendly composite systems with optimal mechanical performance. This work created hybrid epoxy composites utilizing Moringa oleifera natural fiber as reinforcement and waste fly ash (FA) as a particulate filler to tackle material sustainability and waste valorization issues. Four composite laminates, each with a consistent fiber loading of 30 wt% were produced with different fly ash levels of 0, 5, 10, and 15 wt% utilizing a straightforward hand lay-up technique followed by curing at ambient temperature. The composites were analyzed by density, water absorption, microstructural examination, X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), and mechanical testing including tensile, flexural, inter-laminar shear, impact, and micro-hardness assessments. The findings indicated that augmenting fly ash content resulted in a density increase from 1142.8 to 1381 kg/m³ and a void fraction rise from 1.65% to 4.02%, whereas tensile and flexural strengths diminished by around 23% (from 58.2 to 44.78 MPa) and 8% (to 81.01 MPa), respectively. In contrast, notable enhancements were noted in inter-laminar shear strength (about 30%, attaining 4.876 MPa), impact strength (from 6.12 to 22.45 J/cm²), and micro-hardness (up to a 62% increase), validating efficient stress transmission and filler reinforcement. The findings indicate that fly ash-filled Moringa oleifera–epoxy composites provide an advantageous equilibrium between sustainability and functional performance, rendering them appropriate for lightweight, impact-resistant, and wear-sensitive applications, including automotive interiors, domestic components, and semi-structural panels.