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Energy Absorption of Pultruded Hybrid GlassGraphite Epoxy Composites under High Strain-Rate SHPB Compression Loading
Composite Structures and Nano-Engineering Research, Department of Mechanical Engineering, University of Mississippi, Oxford, USA
Composite Structures and Nano-Engineering Research, Department of Mechanical Engineering, University of Mississippi, Oxford, USA
Composite Structures and Nano-Engineering Research, Department of Mechanical Engineering, University of Mississippi, Oxford, USA
Composite Structures and Nano-Engineering Research, Department of Mechanical Engineering, University of Mississippi, Oxford, USA
- 1 Composite Structures and Nano-Engineering Research, Department of Mechanical Engineering, University of Mississippi, Oxford, USA
- 2 Composite Structures and Nano-Engineering Research, Department of Mechanical Engineering, University of Mississippi, Oxford, USA
- 3 Composite Structures and Nano-Engineering Research, Department of Mechanical Engineering, University of Mississippi, Oxford, USA
- 4 Composite Structures and Nano-Engineering Research, Department of Mechanical Engineering, University of Mississippi, Oxford, USA
Materials Sciences and Applications·Volume 06 (2015)·Pages 511–518·Published 29 May 2015·DOI10.4236/msa.2015.66054
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Abstract
In this study, the dynamic response and energy absorption characteristics of different combinations of fiber-reinforced pultruded hybrid composites made of unidirectional glass and graphite fiber/epoxy, have been investigated. High strain-rate compression experiments were conducted on cylindrical specimens at an average strain rate of 700 /s using a modified Split Hopkinson Pressure Bar (SHPB). Failure was monitored with a high-speed video camera, and effects of hybridization on the dynamic behavior of pultruded composites were evaluated. It was found that for a given fiber volume fraction, placing glass fibers in the inner core results in a higher ultimate compressive strength, specific energy absorption, and in general a better dynamic performance with lower density.
KeywordsPultruded CompositesHybridsDynamic Compressive ResponseSHPB
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