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<p>The reinforcement composition optimization is a key factor that is instrumental in improving the mechanical performance of the polymer matrix composites. In the current research, hybrid composites based have been developed using epoxy material reinforced with kevlar fibre, hemp fibre, and carbon nanotubes (CNTs) enroute the hand lay-up process and optimized through response surface methodology (RSM). The kevlar and hemp fibre ranged between 0 and 20 wt.% and the CNT content varied between 0.5 wt.% and 1.5 wt.%. The tensile strength of CNT-only composites (K0H0C0.5) was found to be 195.64&#xa0;MPa while the tensile strength of hybrid composites based on 20 wt.% kevlar, 10 wt.% hemp, and 1 wt.% CNTs was 221.78&#xa0;MPa. The elongation reduced to 0.67%, for the hybrid composites afore mentioned in comparison with the K0H0C0.5 which was found to be 0.86%. There was also significant improvement in impact performance when CNT was added and fibre combinations were optimized. RSM was successfully used to determine the best reinforcement content and ANOVA was used to ascertain that the difference in CNT content was statistically significant to tensile and impact strengths. The findings show that the synergistic association of natural and synthetic fibres, CNT fillers could be optimally combined to bring about improved mechanical performance that could be used in lightweight structural applications.</p>

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Response surface modelling of tensile and impact characteristics of Kevlar/Hemp/CNT reinforced polymer matrix composites

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年4月6日

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  • H. K. Shivanand,
  • Ali B. M. Ali,
  • Madhusudhana Reddy H,
  • ShivaPrakash S,
  • Santhosh Nagaraja,
  • Rahul Biradar,
  • Ahmed Shakir Al-Hiti,
  • Abdul Amir H. Kadhum,
  • Aseel Smerat,
  • Amare Merfo Amsal

摘要

The reinforcement composition optimization is a key factor that is instrumental in improving the mechanical performance of the polymer matrix composites. In the current research, hybrid composites based have been developed using epoxy material reinforced with kevlar fibre, hemp fibre, and carbon nanotubes (CNTs) enroute the hand lay-up process and optimized through response surface methodology (RSM). The kevlar and hemp fibre ranged between 0 and 20 wt.% and the CNT content varied between 0.5 wt.% and 1.5 wt.%. The tensile strength of CNT-only composites (K0H0C0.5) was found to be 195.64 MPa while the tensile strength of hybrid composites based on 20 wt.% kevlar, 10 wt.% hemp, and 1 wt.% CNTs was 221.78 MPa. The elongation reduced to 0.67%, for the hybrid composites afore mentioned in comparison with the K0H0C0.5 which was found to be 0.86%. There was also significant improvement in impact performance when CNT was added and fibre combinations were optimized. RSM was successfully used to determine the best reinforcement content and ANOVA was used to ascertain that the difference in CNT content was statistically significant to tensile and impact strengths. The findings show that the synergistic association of natural and synthetic fibres, CNT fillers could be optimally combined to bring about improved mechanical performance that could be used in lightweight structural applications.