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High Strain-Rate Through-Thickness Compression Testing of Symmetrical Inter-ply Hybrid Polymer Composites Reinforced with Carbon/Glass and Carbon/Kevlar Fibers
A compressive split Hopkinson pressure bar (SHPB) apparatus is utilised for the high strain-rate investigation of symmetrical epoxy-based carbon/glass (CGE) and carbon/Kevlar (CKE) hybrid composite samples along the through-thickness direction. The stacking sequence used for the hybrid composites wa...
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Published in: | Transactions of the Indian Institute of Metals 2022-10, Vol.75 (10), p.2507-2516 |
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Main Authors: | , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | A compressive split Hopkinson pressure bar (SHPB) apparatus is utilised for the high strain-rate investigation of symmetrical epoxy-based carbon/glass (CGE) and carbon/Kevlar (CKE) hybrid composite samples along the through-thickness direction. The stacking sequence used for the hybrid composites was [C
5
/G
5
]
S
and [C
5
/K
5
]
S
. Compared to the density of neat epoxy-based carbon (CE) composite, the density of CGE composite was about 14% higher, whereas the density of CKE composite was about 8% lower. An initial striker velocity of about 25 m/s was used for all experiments. The mean reference strain rate observed for CGE and CKE hybrid composites was 2293 and 2333 s
−1
, respectively, with a negligible difference in mean compressive strength. The mean strain to failure of [C
5
/K
5
]
S
was almost 17% higher than [C
5
/G
5
]
S,
and proper stress equilibrium was observed. This article presents the significant outcomes of SHPB testing, including mechanical response and failure analysis of the hybrid composite samples. |
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ISSN: | 0972-2815 0975-1645 |
DOI: | 10.1007/s12666-022-02619-0 |