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Steel and Composite Structures Volume 54, Number 6, March 25 2025 , pages 535-545 DOI: https://doi.org/10.12989/scs.2025.54.6.535 |
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Out-of-plane tensile strength of CFRP laminates reinforced by thin-ply under different loading rates |
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Farin Ramezani, Ricardo J.C. Carbas, Eduardo A.S. Marques and Lucas F.M. da Silva
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| Abstract | ||
| Delamination in composite laminates is primarily caused by transverse tensile stress. However, experimental and numerical studies have consistently shown that hybrid composite laminates, reinforced with thin-plies, exhibit greater strength under static transverse tensile loads in comparison to reference conventional composite laminates. This study focuses on analyzing the behavior of composite laminates reinforced by thin-ply, subjected to high-rate and impact transverse tensile loading. A conventional composite, Texipreg HS 160 T700, and a thin-ply, NTPT-TP415, were selected for this investigation. Hybrid laminates were created by integrating 25% thin-plies throughout the laminate's thickness. Subsequently, unidirectionally stacked laminates were subjected to high-rate and impact transverse tensile loading. The experimental results showed a slight increase in the transverse tensile strength of the hybrid laminate compared to the reference conventional composite under both high-rate and impact-loading conditions. To delve into the microscale behavior of these configurations, a representative volume element was analyzed using numerical methods, providing valuable insights into the studied setups. | ||
| Key Words | ||
| composite laminate; high-rate loading; impact loading; thin-ply | ||
| Address | ||
| Farin Ramezani:Instituto de Ciencia e Inovacao Em Engenharia Mecanica e Engenharia Industrial (INEGI, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal) Ricardo J.C. Carbas:Departamento de Engenharia Mecanica, Faculdade de Engenharia (FEUP, Universidade Do Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal) Eduardo A.S. Marques:Departamento de Engenharia Mecanica, Faculdade de Engenharia (FEUP, Universidade Do Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal) Lucas F.M. da Silva:Departamento de Engenharia Mecanica, Faculdade de Engenharia (FEUP, Universidade Do Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal) | ||