TITLE:
Energy Absorption of Pultruded Hybrid GlassGraphite Epoxy Composites under High Strain-Rate SHPB Compression Loading
AUTHORS:
Seyed Soheil Daryadel, Cameron Ray, Tejas Pandya, P. Raju Mantena
KEYWORDS:
Pultruded Composites, Hybrids, Dynamic Compressive Response, SHPB
JOURNAL NAME:
Materials Sciences and Applications,
Vol.6 No.6,
June
5,
2015
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.