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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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Bibliographic Details
Published in:Transactions of the Indian Institute of Metals 2022-10, Vol.75 (10), p.2507-2516
Main Authors: Shubham, Prusty, Rajesh Kumar, Ray, Bankim Chandra
Format: Article
Language:English
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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.
ISSN:0972-2815
0975-1645
DOI:10.1007/s12666-022-02619-0