Abstract
Nowadays composite materials have been extensively utilized in many military and industrial applications. For example, the newest Boeing 787 uses 50% composite (mostly carbon fiber reinforced plastic) in production. However, the weak delamination strength of fiber reinforced composites, when subjected to external impact such as ballistic impact, has been always potential serious threats to the safety of passengers. Dynamic fracture toughness is a critical indicator of the performance from delamination in such impact events. Quasi-static experimental techniques for fracture toughness have been well developed. For example, end notched flexure (ENF) technique, which is illustrated in Fig. 1, has become a typical method to determined mode-II fracture toughness for composites under quasi-static loading conditions. However, dynamic fracture characterization of composites has been challenging. This has resulted in conflictive and confusing conclusions in regard to strain rate effects on fracture toughness of composites [1].
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Keywords
- Fracture Toughness
- Digital Image Correlation
- Dynamic Fracture Toughness
- Stress Wave Propagation
- Fiber Reinforce Epoxy Composite
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ReferenceS
Jacob, G. C., Starbuck, J. M., Fellers, J. F., Simunovic, S., Boeman, R. G., 2005, “The effect of loading rate on the fracture toughness of fiber reinforced polymer composites,” Journal of Applied Polymer Science, 96:899-904.
Yang, Z., and Sun, C. T., 2000, “Interlaminar fracture toughness of a graphite/epoxy multidirectional composite,” Transactions of the ASME, Journal of Engineering Materials and Technology, 22:428-433.
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© 2011 Springer Science+Business Media, LLC
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Lu, WY., Song, B., Jin, H. (2011). A Revisit to High-rate Mode-II Fracture Characterization of Composites with Kolsky Bar Techniques. In: Proulx, T. (eds) Dynamic Behavior of Materials, Volume 1. Conference Proceedings of the Society for Experimental Mechanics Series. Springer, New York, NY. https://doi.org/10.1007/978-1-4419-8228-5_39
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DOI: https://doi.org/10.1007/978-1-4419-8228-5_39
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