Three dimensional fiber reinforced foam cores (3DFRFC) can have improved mechanical properties under specific strain rates and fiber volumes. This study explored different manufacturing techniques for the 3DFRFC and tested the specimens at dynamic loading rates of 69–103 s –1. Flexural bend test showed that glass fibers made the samples stronger yet more brittle while quasi-static compression tests showed a decrease in performance with 3DFRFC. High strain impact tests validated previously published studies by showing an 18–20% reduction in the maximum force experienced by the fiber reinforced core and its ability to dissipate the impact force in the foam core sandwich panel. The results show potential for the cost-effective manufacturing method used in this study to produce an improved composite foam core sandwich panel for armored applications where high strain rates are present and reduce the overall weight of vehicles while maintaining the desired strength performance.
|Commitee:||Chae, Eun Jung, Minaie, Bob|
|School:||California State University, Long Beach|
|Department:||Mechanical and Aerospace Engineering|
|School Location:||United States -- California|
|Source:||MAI 58/05M(E), Masters Abstracts International|
|Subjects:||Mechanical engineering, Materials science|
|Keywords:||Composites, Foam core, Impact response, Polyurethane, Sandwich, Sanwich panel|
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