articleComposites Part A Applied Science and ManufacturingApr 13, 2025HYBRID OA

Ameliorating tensile and fracture performance of carbon fiber-epoxy composites via atmospheric plasma activation: Insights into damage modes through in-situ acoustic emission inspection

HŞHalil ŞenolHUHasan UlusAAAbdulrahman Al‐NadhariSTSerra TopalMYMehmet Yıldız

Sabancı Üniversitesi · Selçuk University

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Abstract

Carbon fiber-reinforced epoxy composites may suffer from poor interfacial bonding , which negatively affects their mechanical performance and reliability in demanding applications. This study investigates the effect of atmospheric plasma activation (APA) on enhancing fiber–matrix adhesion, focusing on the systematic influence of APA exposure duration. The results show that APA-treated composites exhibit a significant increase in tensile strength (up to 13.5%) and mode-I and mode-II fracture toughness (up to 53% and 44%, respectively) compared to untreated (NT) specimens. Additionally, in-situ Acoustic Emission (AE) monitoring during mechanical tests enables real-time insights into damage initiation and…

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66
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5

Topics & keywords

Topics
Keywords
  • Materials science
  • Acoustic emission
  • Composite material
  • Epoxy
  • Ultimate tensile strength
  • Fracture (geology)
  • In situ
  • Fiber
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