Version 1
: Received: 2 November 2023 / Approved: 2 November 2023 / Online: 2 November 2023 (09:10:47 CET)
How to cite:
Fernandes, O.; Dutta, J.; Pai, Y.; G T, M.; Baliga, R. Effect of Hole Size on Open Hole Tensile (OHT) and Flexural Strength (OHF) of Aramid-Basalt Fibre Reinforced Polymer Composites. Preprints2023, 2023110136. https://doi.org/10.20944/preprints202311.0136.v1
Fernandes, O.; Dutta, J.; Pai, Y.; G T, M.; Baliga, R. Effect of Hole Size on Open Hole Tensile (OHT) and Flexural Strength (OHF) of Aramid-Basalt Fibre Reinforced Polymer Composites. Preprints 2023, 2023110136. https://doi.org/10.20944/preprints202311.0136.v1
Fernandes, O.; Dutta, J.; Pai, Y.; G T, M.; Baliga, R. Effect of Hole Size on Open Hole Tensile (OHT) and Flexural Strength (OHF) of Aramid-Basalt Fibre Reinforced Polymer Composites. Preprints2023, 2023110136. https://doi.org/10.20944/preprints202311.0136.v1
APA Style
Fernandes, O., Dutta, J., Pai, Y., G T, M., & Baliga, R. (2023). Effect of Hole Size on Open Hole Tensile (OHT) and Flexural Strength (OHF) of Aramid-Basalt Fibre Reinforced Polymer Composites. Preprints. https://doi.org/10.20944/preprints202311.0136.v1
Chicago/Turabian Style
Fernandes, O., Mahesha G T and Ravishanker Baliga. 2023 "Effect of Hole Size on Open Hole Tensile (OHT) and Flexural Strength (OHF) of Aramid-Basalt Fibre Reinforced Polymer Composites" Preprints. https://doi.org/10.20944/preprints202311.0136.v1
Abstract
The open hole tensile and flexural test of composites holds immense importance in aerospace and structural engineering. These tests provide critical insights into how composites perform under real-world conditions, allowing for the development of materials that meet rigorous standards, thereby ensuring the safety and durability of aircraft and other applications. This study investigates the influence of hole size on the open hole tensile (OHT) and flexural properties (OHF) of plane woven aramid/epoxy (AFRP), basalt/epoxy (BFRP), and aramid-basalt/epoxy (ABFRP) sandwiched laminates. Specimens with three different hole sizes viz., 4 mm, 6 mm, 8 mm were prepared and tested according to ASTM D5766 and ASTM D7264 for OHT and OHF performance respectively. Results indicated that the hybridization of aramid-basalt layers in a sandwich lay up significantly improved the mechanical performance when compared to only aramid laminate. However, with the increase in hole size the mechanical properties declined irrespective of the material. Basalt fibres showed higher hole sensitivity under tensile loading due to its brittle fracture mechanism while aramid fibres exhibited higher hole sensitivity under flexural loading which can be attributed to its the poor compressive strength. The effect of hole size on the damage mechanism has also been highlighted through scanning electron microscope (SEM). Major failure modes observed are delamination around the hole edges, ductile and brittle fibre fractures, and delamination.
Keywords
Open hole tensile test; Hybrid composite; Damage mechanism; Hole diameter; SEM
Subject
Engineering, Aerospace Engineering
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
