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<p>In this article, drop weight impact at energy levels of 20&#xa0;J and 40&#xa0;J as well as compression after impact (CAI) response of the composite laminates made from the basalt fabric (B), glass fabric (G) and their hybrid combinations with various stacking sequences was studied. BGB represents the hybrid composite with basalt fabric as the top and bottom layers with the glass fabric sandwiched between them forming the core and vice-versa for the GBG. The main inference from the drop weight impact was that the load bearing ability and damage area was more dependent on the stacking sequence while a marginal variation in the absorbed energy was observed for the hybrid composites. Among the hybrid composites, the residual compressive strength for the intercalated arrangement and BGB with basalt fabric in the exterior had better retention in the compression strength. CAI results also revealed that the intercalated arrangement (alternating layers of glass fabric and basalt fabric) and GBG configuration with glass fabric in the outermost layer had higher residual strength than the BGB. Increasing the impact energy affected the damage tolerance which was marked by lower value of normalized compression strength for the composites at 40&#xa0;J over 20&#xa0;J. The experimental results show that the GBG hybrid laminate achieved a higher energy absorption (32.15&#xa0;J at 40&#xa0;J impact) and lower damage area (491.77&#xa0;mm²) compared to pure glass/epoxy (23.00&#xa0;J, 738.55&#xa0;mm²), while also exhibiting a 15.7% drop in residual strength, indicating a favorable balance between energy dissipation and post-impact structural integrity through hybridization of high-ductility and high-stiffness fibers.</p>

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Influence of ply stacking sequence and impact energy on the compression after impact strength of the hybrid composites with fiberglass and basalt fibers

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年7月13日

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  • Priyadharshini Gopi,
  • Chandrasekar Muthukumar,
  • T. Sivagangai,
  • Dinesh Babu Venkatesan,
  • Senthilkumar Krishnasamy,
  • T. Senthil Muthu Kumar

摘要

In this article, drop weight impact at energy levels of 20 J and 40 J as well as compression after impact (CAI) response of the composite laminates made from the basalt fabric (B), glass fabric (G) and their hybrid combinations with various stacking sequences was studied. BGB represents the hybrid composite with basalt fabric as the top and bottom layers with the glass fabric sandwiched between them forming the core and vice-versa for the GBG. The main inference from the drop weight impact was that the load bearing ability and damage area was more dependent on the stacking sequence while a marginal variation in the absorbed energy was observed for the hybrid composites. Among the hybrid composites, the residual compressive strength for the intercalated arrangement and BGB with basalt fabric in the exterior had better retention in the compression strength. CAI results also revealed that the intercalated arrangement (alternating layers of glass fabric and basalt fabric) and GBG configuration with glass fabric in the outermost layer had higher residual strength than the BGB. Increasing the impact energy affected the damage tolerance which was marked by lower value of normalized compression strength for the composites at 40 J over 20 J. The experimental results show that the GBG hybrid laminate achieved a higher energy absorption (32.15 J at 40 J impact) and lower damage area (491.77 mm²) compared to pure glass/epoxy (23.00 J, 738.55 mm²), while also exhibiting a 15.7% drop in residual strength, indicating a favorable balance between energy dissipation and post-impact structural integrity through hybridization of high-ductility and high-stiffness fibers.