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This study investigates the effect of atmospheric pressure air plasma (APA) treatment on the mechanical performance, damage mechanisms and damage propagation of carbon fiber (CF)/Epoxy composites by utilizing Acoustic emissionAcoustic Emission (AE) method. CF fabrics are treated with APA prior to manufacturing of composites through vacuum-assisted resin infusion (VARI) process. Manufactured composites are tested for mode-I and mode-II fracture toughness tests in accordance with EN 6033, and EN 6034 standards, respectively. APA treatment resulted in improvements of GIC and GIIC values up to 32% and 40% over non-treated specimen. AE analysis revealed four discrete clusters representing different damage modes such as matrix cracking, interlaminar damages, fiber pull-out, and fiber breakage. The findings of the study indicate that APA treatment enhances the mechanical performance and alters the damage mechanism and propagation.

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Development of Damage Mechanisms of Carbon Fibre-Reinforced Polymer Using Acoustic Emission: Effect of Plasma Surface Treatment

  • 会议论文

  • 发表日期：

    2025年

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  • Halil Şenol,
  • Serra Topal,
  • Hasan Ulus,
  • Mehmet Yildiz

摘要

This study investigates the effect of atmospheric pressure air plasma (APA) treatment on the mechanical performance, damage mechanisms and damage propagation of carbon fiber (CF)/Epoxy composites by utilizing Acoustic emissionAcoustic Emission (AE) method. CF fabrics are treated with APA prior to manufacturing of composites through vacuum-assisted resin infusion (VARI) process. Manufactured composites are tested for mode-I and mode-II fracture toughness tests in accordance with EN 6033, and EN 6034 standards, respectively. APA treatment resulted in improvements of GIC and GIIC values up to 32% and 40% over non-treated specimen. AE analysis revealed four discrete clusters representing different damage modes such as matrix cracking, interlaminar damages, fiber pull-out, and fiber breakage. The findings of the study indicate that APA treatment enhances the mechanical performance and alters the damage mechanism and propagation.