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<p>The impact resistance of a composite material intended for orthopedic applications was studied. The experimental work was carried out on the composites of three architectures (<i>G</i> - 4<i>P</i> - <i>G</i> , <i>P</i> - <i>G</i> - 2<i>P</i> - <i>G</i> - <i>P</i> , 2<i>P</i> - 2<i>G</i> - 2<i>P</i>) made by vacuum molding technique. Standard Charpy specimens were cut along and perpendicular to the molding direction. The composite of 2<i>P</i> - 2<i>G</i> - 2<i>P</i> architecture demonstrating the best fracture toughness (<i>G</i><sub><i>IC</i></sub>) was subjected to the impact tests using the specimens with <i>U</i>- and <i>I</i>-notch shapes. To estimate the rupture surfaces after impact test, microscopic and SEM observations were carried out. Additionally, according on the failure mechanism, the notch acuity has a significant effect on the stress concentration.</p>

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Study of the Toughness of a Composite Material as a Function of Variation in Notch Geometry, Architecture, and Molding Flow

  • 期刊论文

  • 发表日期：

    2025年1月16日

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  • S. Achouri,
  • M. Bourebia,
  • S. Meddah,
  • A. Oulabbas,
  • B. Redjel

摘要

The impact resistance of a composite material intended for orthopedic applications was studied. The experimental work was carried out on the composites of three architectures (G - 4P - G , P - G - 2P - G - P , 2P - 2G - 2P) made by vacuum molding technique. Standard Charpy specimens were cut along and perpendicular to the molding direction. The composite of 2P - 2G - 2P architecture demonstrating the best fracture toughness (GIC) was subjected to the impact tests using the specimens with U- and I-notch shapes. To estimate the rupture surfaces after impact test, microscopic and SEM observations were carried out. Additionally, according on the failure mechanism, the notch acuity has a significant effect on the stress concentration.