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• Intralaminar fracture characterization tests at high strain rates

  A. Cimadevilla, A. Vaz-Romero, J. Pernas-Sánchez, J. Artero-Guerrero, P. Maimi, E. González, E. Blanpre, V. Jacques, A. Cimadevilla Diez

  Materiales Compuestos (2025). Vol. 01 - Comunicaciones Matcomp17 (2017), (Núm. 1 - Comportamiento en Servicio de los Materiales Compuestos), 31

  
  

  Abstract

  The behaviour of composite materials under dynamic loading conditions has been a subject of research for the last two decades. When subjected to dynamic conditions, composite materials show a significant sensitivity to strain rate. This is critical for a correct simulation of the behaviour of composite structures under impact. Currently, a few studies have been carried out on the analysis of strain rate sensitivity of the fracture toughness. These studies have reported different conclusions for the same material (IM7/8552), indicating that the optimal technique for characterising this property under high strain rate loading remains unresolved. In this work, it has been carried out dynamic characterization test on the fracture toughness using the Split Hopkinson Pressure Bar. It has been developed a new methodology for obtaining an accurate synchronization between Hopkinson bar data and high speed camera. Using the proposed methodology a good repeatability has been obtained for dynamic tests.

  Abstract
  The behaviour of composite materials under dynamic loading conditions has been a subject of research for the last two decades. When subjected to dynamic conditions, composite [...]

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