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<p>This work examined the effects of accelerated hydrothermal aging and different SiC filler concentrations on jute–epoxy composites structural, mechanical, and physical properties. Maintaining jute fiber at 10 wt% while altering the SiC filler percentage, four jute–SiC (JS) hybrid composites (JS-0%, JS-5%, JS-10%, and JS-15%) were fabricated using the hand-lay-up technique. The void fraction ranged from 1 to 4%, with the highest void content observed in the JS-15% composite. Water absorption followed Fick’s two-stage model, increasing with higher SiC filler content, though early moisture absorption showed some deviations. The tensile strength increased linearly with filler addition, with JS-15% achieving a maximum of 43 ± 5&#xa0;MPa, a 54% improvement over the neat epoxy. Hydrothermal aging led to a 5% reduction in the neat epoxy’s tensile strength, while the jute–SiC hybrid composites exhibited a 10–15% reduction due to interfacial de-bonding. The flexural strength increased with SiC filler, peaking at 36&#xa0;MPa for JS-15%. Aged specimens showed a 10–12.5% reduction in flexural strength, with the JS-10% composite exhibiting the highest loss of 12.5%. Thermogravimetric analysis (TGA) indicated that filler volume and aging had a minimal impact on the composite’s thermal stability. Scanning electron microscopy (SEM) of failed specimens revealed predominant delamination and fiber failure under tensile loading, whereas inter-laminar shear failure dominated under flexural loading. ANOVA results highlighted significant differences in mechanical properties among the composites, with Tukey’s HSD analysis providing detailed insights into variations in water absorption, swelling, and tensile and flexural strengths. These findings contribute to developing lightweight, environmentally friendly composites with enhanced mechanical performance for various structural applications.</p> Graphical abstract <p></p>

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Mechanical, structural, and statistical analysis of SiC-reinforced short jute fiber/epoxy composites under hydrothermal aging

  • 期刊论文

  • 发表日期：

    2025年5月14日

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  • Alok Behera,
  • Janaki Dehury,
  • Ramani Ranjan Dilla,
  • Sourav Kumar Mahapatra

摘要

This work examined the effects of accelerated hydrothermal aging and different SiC filler concentrations on jute–epoxy composites structural, mechanical, and physical properties. Maintaining jute fiber at 10 wt% while altering the SiC filler percentage, four jute–SiC (JS) hybrid composites (JS-0%, JS-5%, JS-10%, and JS-15%) were fabricated using the hand-lay-up technique. The void fraction ranged from 1 to 4%, with the highest void content observed in the JS-15% composite. Water absorption followed Fick’s two-stage model, increasing with higher SiC filler content, though early moisture absorption showed some deviations. The tensile strength increased linearly with filler addition, with JS-15% achieving a maximum of 43 ± 5 MPa, a 54% improvement over the neat epoxy. Hydrothermal aging led to a 5% reduction in the neat epoxy’s tensile strength, while the jute–SiC hybrid composites exhibited a 10–15% reduction due to interfacial de-bonding. The flexural strength increased with SiC filler, peaking at 36 MPa for JS-15%. Aged specimens showed a 10–12.5% reduction in flexural strength, with the JS-10% composite exhibiting the highest loss of 12.5%. Thermogravimetric analysis (TGA) indicated that filler volume and aging had a minimal impact on the composite’s thermal stability. Scanning electron microscopy (SEM) of failed specimens revealed predominant delamination and fiber failure under tensile loading, whereas inter-laminar shear failure dominated under flexural loading. ANOVA results highlighted significant differences in mechanical properties among the composites, with Tukey’s HSD analysis providing detailed insights into variations in water absorption, swelling, and tensile and flexural strengths. These findings contribute to developing lightweight, environmentally friendly composites with enhanced mechanical performance for various structural applications.

Graphical abstract