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Unidirectional Glass Fiber-Reinforced Plastic (UGFRP) composites are lightweight and widely utilized in automotive, aerospace, and marine industries, often exposed to varying thermal conditions. This study examines the tensile behavior of UGFRP within a temperature range of room temperature to 200 °C through experimental and theoretical approaches. Tensile tests conducted in a high-temperature furnace showed significant mechanical degradation with increasing temperature. At room temperature, UGFRP demonstrated superior properties, including a tensile strength of 378.8 MPa, elastic modulus of 3.7 GPa, and maximum strain of 0.104 mm/mm. By 200 °C, these values sharply declined to 43.3 MPa, 0.71 GPa, and 0.0415 mm/mm, respectively, due to resin softening and reduced fiber-matrix interaction. A temperature-dependent constitutive model was calibrated across the glass transition region, while SEM analysis identified voids and delamination as primary failure mechanisms. These results provide crucial insights for optimizing GFRP in thermally demanding applications.

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Investigation of Temperature Dependent Tensile Properties of Unidirectional Glass Fibre Reinforced Epoxy Composite Laminate

  • 会议论文

  • 发表日期：

    2025年

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  • Ali Farokhi Nejad,
  • Mohd Fairuz Shamsudin,
  • Haris Ahmad Israr,
  • Amir Abbas Rezvanfar,
  • Mohd Yazid Yahya,
  • Mohd Nasir Tamin

摘要

Unidirectional Glass Fiber-Reinforced Plastic (UGFRP) composites are lightweight and widely utilized in automotive, aerospace, and marine industries, often exposed to varying thermal conditions. This study examines the tensile behavior of UGFRP within a temperature range of room temperature to 200 °C through experimental and theoretical approaches. Tensile tests conducted in a high-temperature furnace showed significant mechanical degradation with increasing temperature. At room temperature, UGFRP demonstrated superior properties, including a tensile strength of 378.8 MPa, elastic modulus of 3.7 GPa, and maximum strain of 0.104 mm/mm. By 200 °C, these values sharply declined to 43.3 MPa, 0.71 GPa, and 0.0415 mm/mm, respectively, due to resin softening and reduced fiber-matrix interaction. A temperature-dependent constitutive model was calibrated across the glass transition region, while SEM analysis identified voids and delamination as primary failure mechanisms. These results provide crucial insights for optimizing GFRP in thermally demanding applications.